Relevant bibliographies by topics / Parasitic in plants Nematoda

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Academic literature on the topic 'Parasitic in plants Nematoda'

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Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Parasitic in plants Nematoda"

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Zheng, Jinshui, Donghai Peng, Ling Chen, Hualin Liu, Feng Chen, Mengci Xu, Shouyong Ju, Lifang Ruan, and Ming Sun. "The Ditylenchus destructor genome provides new insights into the evolution of plant parasitic nematodes." Proceedings of the Royal Society B: Biological Sciences 283, no. 1835 (July 27, 2016): 20160942. http://dx.doi.org/10.1098/rspb.2016.0942.

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Plant-parasitic nematodes were found in 4 of the 12 clades of phylum Nematoda. These nematodes in different clades may have originated independently from their free-living fungivorous ancestors. However, the exact evolutionary process of these parasites is unclear. Here, we sequenced the genome sequence of a migratory plant nematode, Ditylenchus destructor . We performed comparative genomics among the free-living nematode, Caenorhabditis elegans and all the plant nematodes with genome sequences available. We found that, compared with C. elegans , the core developmental control processes underwent heavy reduction, though most signal transduction pathways were conserved. We also found D. destructor contained more homologies of the key genes in the above processes than the other plant nematodes. We suggest that Ditylenchus spp. may be an intermediate evolutionary history stage from free-living nematodes that feed on fungi to obligate plant-parasitic nematodes. Based on the facts that D. destructor can feed on fungi and has a relatively short life cycle, and that it has similar features to both C. elegans and sedentary plant-parasitic nematodes from clade 12, we propose it as a new model to study the biology, biocontrol of plant nematodes and the interaction between nematodes and plants.
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BLAXTER, MARK, and GEORGIOS KOUTSOVOULOS. "The evolution of parasitism in Nematoda." Parasitology 142, S1 (June 25, 2014): S26—S39. http://dx.doi.org/10.1017/s0031182014000791.

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SUMMARYNematodes are abundant and diverse, and include many parasitic species. Molecular phylogenetic analyses have shown that parasitism of plants and animals has arisen at least 15 times independently. Extant nematode species also display lifestyles that are proposed to be on the evolutionary trajectory to parasitism. Recent advances have permitted the determination of the genomes and transcriptomes of many nematode species. These new data can be used to further resolve the phylogeny of Nematoda, and identify possible genetic patterns associated with parasitism. Plant-parasitic nematode genomes show evidence of horizontal gene transfer from other members of the rhizosphere, and these genes play important roles in the parasite-host interface. Similar horizontal transfer is not evident in animal parasitic groups. Many nematodes have bacterial symbionts that can be essential for survival. Horizontal transfer from symbionts to the nematode is also common, but its biological importance is unclear. Over 100 nematode species are currently targeted for sequencing, and these data will yield important insights into the biology and evolutionary history of parasitism. It is important that these new technologies are also applied to free-living taxa, so that the pre-parasitic ground state can be inferred, and the novelties associated with parasitism isolated.
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Akopian, Mkrtchian, Galstian, and Khurshudyan. "ON THE FAUNA OF PHYTONEMATODES OF ANTHROPOGENICALLY TRANSFORMED BIOCOENOSES IN ARMENIA." THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL, no. 22 (May 19, 2021): 38–43. http://dx.doi.org/10.31016/978-5-6046256-1-3.2021.22.38-43.

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We have examined the fauna and structure of soil nematode communities in anthropogenically transformed biocoenoses of Armenia by example of two biotopes in Yerevan city – fruit and berry gardens, and woodland park area. Ecotrophic characteristics of the identified nematode groups was given, and population density for the most pathogenic groups was determined. Research was conducted in 2019 in the Dalma fruit and berry gardens, and woodland park area of the Hrazdan gorge of Yerevan. 167 soil samples were collected during the research in rhizosphere of 35 plant species. Soil samples were collected by standard methods for nematology. During the research, we identified 22 genera of Nematoda including 8 parasitic ones, belonging to 16 families and 6 orders. Ecotrophic structure of nematode communities in the mentioned biotopes was represented by 5 ecotrophic groups: bacteriotrophs – Rhabditis, Plectus, Cephalobus, Eucephalobus, Panagrolaimus, mycotrophs – Aphelenchoides, Aphelenchus, predators – Discolaimus,Mononchus, Mylonchulus, Clarcus, polytrophs – Dorylaimus, Eudorylaimus, Mesodorylaimus, phytotrophs: obligate and facultative parasites of plants – Helicotylenchus, Rotylenchus, Criconema, Macroposthonia, Xiphinema, Paratylenchus, Pratylenchus, Tylenchus. Plant parasitic nematodes (8 genera) were represented by the most diverse generic structure. Among them Xiphinema, Helicotylenchus, and Macroposthonia were found everywhere. However, high density of these Nematoda population was found in rhizosphere of fruit and berry crops in the Dalma gardens. The highest number of Xiphinemahas was detected in rhizosphere of grape (Vitis vinifera) – (147 specimens per 100 cm3 of soil), Macroposthonia in rhizosphere of fig (Ficus carica) – (178 specimens per 100 cm3 of soil) and grape (Vitis vinifera) – (185 specimens per 100 cm3 of soil), and Helicotylenchus in rhizosphere of apricot (Prunus armeniaca) – (250 specimens per 100 cm3 of soil). Bacteriotrophs and polytrophs were the next prevalent trophic groups of nematodes. The highest density of their population was detected in rhizosphere of ornamental plants in the Hrazdan gorge.
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Malyutina. "NEUROPEPTIDES OF PLANT-PARASITIC GALL-FORMING NEMATODES." THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL, no. 22 (May 19, 2021): 311–16. http://dx.doi.org/10.31016/978-5-6046256-1-3.2021.22.311-316.

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This short review of foreign literature is dedicated to studies of physiological role and functional significance of FMRF-like neuropeptides, their potential targets – Gprotein-coupled receptors (GPCR) and genes (flp family) coding these neuropeptides in nervous system of plant root knot nematodes. It has been shown that FMRFamide-like neuropeptides are able to modulate locomotion reactions of the cyst nematodes causing stimulatory on inhibitory effects on the worms' movement activity. So a possibility to cause disorders in plant nematodes' locomotion can be a way to contain the nematode infection of the agricultural plant hosts. The materials of the study were 2nd stage larvae of root knot nematodes Meloidogyne incognita, M. minor and M. graminicola from the genus Meloidogyne Goldi, 1982. Methods of the study were immunological, immunocytochemical, as well as the modern molecular methods including genes knockout by RNA interference. The fact that expression of flp genes coding FMRF-like neuropeptides had been found in various structures of nervous systems of a range of root knot nematodes' species together with the presence of these genes' homologues in other plant nematodes species, as well as in parasitizing nematodes of vertebrates and free-living ones, shows a conservatism of peptidergic nervous system in the whole of type Nematoda. The data in the review can be used for development of new anthelmintic drugs to decrease of nematode infection of the host plants. Currently studies on this thematic are not conducted in Russia.
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Haegeman, Annelies, John T. Jones, and Etienne G. J. Danchin. "Horizontal Gene Transfer in Nematodes: A Catalyst for Plant Parasitism?" Molecular Plant-Microbe Interactions® 24, no. 8 (August 2011): 879–87. http://dx.doi.org/10.1094/mpmi-03-11-0055.

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The origin of plant parasitism within the phylum Nematoda is intriguing. The ability to parasitize plants has originated independently at least three times during nematode evolution and, as more molecular data has emerged, it has become clear that multiple instances of horizontal gene transfer (HGT) from bacteria and fungi have played a crucial role in the nematode's adaptation to this new lifestyle. The first reported HGT cases in plant-parasitic nematodes were genes encoding plant cell wall–degrading enzymes. Other putative examples of HGT were subsequently described, including genes that may be involved in the modulation of the plant's defense system, the establishment of a nematode feeding site, and the synthesis or processing of nutrients. Although, in many cases, it is difficult to pinpoint the donor organism, candidate donors are usually soil dwelling and are either plant-pathogenic or plant-associated microorganisms, hence occupying the same ecological niche as the nematodes. The exact mechanisms of transfer are unknown, although close contacts with donor microorganisms, such as symbiotic or trophic interactions, are a possibility. The widespread occurrence of horizontally transferred genes in evolutionarily independent plant-parasitic nematode lineages suggests that HGT may be a prerequisite for successful plant parasitism in nematodes.
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BIRD, DAVID McK, JOHN T. JONES, CHARLES H. OPPERMAN, TAISEI KIKUCHI, and ETIENNE G. J. DANCHIN. "Signatures of adaptation to plant parasitism in nematode genomes." Parasitology 142, S1 (January 30, 2014): S71—S84. http://dx.doi.org/10.1017/s0031182013002163.

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SUMMARYPlant-parasitic nematodes cause considerable damage to global agriculture. The ability to parasitize plants is a derived character that appears to have independently emerged several times in the phylum Nematoda. Morphological convergence to feeding style has been observed, but whether this is emergent from molecular convergence is less obvious. To address this, we assess whether genomic signatures can be associated with plant parasitism by nematodes. In this review, we report genomic features and characteristics that appear to be common in plant-parasitic nematodes while absent or rare in animal parasites, predators or free-living species. Candidate horizontal acquisitions of parasitism genes have systematically been found in all plant-parasitic species investigated at the sequence level. Presence of peptides that mimic plant hormones also appears to be a trait of plant-parasitic species. Annotations of the few genomes of plant-parasitic nematodes available to date have revealed a set of apparently species-specific genes on every occasion. Effector genes, important for parasitism are frequently found among those species-specific genes, indicating poor overlap. Overall, nematodes appear to have developed convergent genomic solutions to adapt to plant parasitism.
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Daramola, Fisayo Y., Rinus Knoetze, Antoinette Swart, and Antoinette P. Malan. "First report and molecular characterization of the dagger nematode, Xiphinema oxycaudatum (Nematoda, Dorylaimidae) from South Africa." ZooKeys 894 (December 3, 2019): 1–17. http://dx.doi.org/10.3897/zookeys.894.35281.

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Plant-parasitic nematodes of the genus Xiphinema Cobb, 1913 comprise a complex group of nematode species, some of which are important vectors of plant viruses. During a field survey to determine the soil health of an abandoned honeybush (Cyclopia genistoides) monoculture, a high density of the dagger nematode, Xiphinema oxycaudatum Lamberti & Bleve-Zacheo, 1979 (Nematoda, Dorylaimidae), was observed in soil around the roots of honeybush plants in an abandoned farmland at Bereaville, an old mission station in the Western Cape province of South Africa. Soil samples were taken from the rhizosphere of plants and nematodes were extracted from the soil using a modified extraction tray method. Specimen of the dagger nematodes were processed for scanning electron microscopy, morphological and molecular analysis. Molecular profiling of the nematode species was done in order to give an accurate diagnosis and to effectively discriminate the nematode from other species within the Xiphinema americanum group. Phylogenetic analysis based on the D2D3 expansion segment of the 28S gene supported a close relationship of species within the americanum group, however, the protein-coding cytochrome oxidase (coxI) of the mitochondrial gene provided a useful tool for distinguishing the nematode from other species within the group. This study represents the first report of X. oxycaudatum from South Africa.
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Hussey, Richard S., Eric L. Davis, and Thomas J. Baum. "Secrets in secretions: genes that control nematode parasitism of plants." Brazilian Journal of Plant Physiology 14, no. 3 (September 2002): 183–94. http://dx.doi.org/10.1590/s1677-04202002000300002.

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The most evolutionary advanced adaptations for plant parasitism by nematodes are the products of parasitism genes expressed in their esophageal gland cells and secreted through their stylet into host tissue to control the complex process of parasitism. Molecular analyses of nematode parasitism genes are revealing the complexity of the tools a nematode possesses that enable it to attack plants and paints a more elaborate picture of host cellular events under specific control by the parasite than previously hypothesized. Interestingly, the majority of the nematode parasitism genes discovered encodes proteins unique to plant parasites. Identifying the complete profile of parasitism genes expressed throughout the parasitic cycle of a nematode is the key to understanding the molecular basis of nematode parasitism of plants and identifying vulnerable points in the parasitic process that can be interfered with to achieve nematode control to limit nematode-induced yield losses in crops.
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Sigariova, D. D., and V. G. Karpliyk. "Parasitic Nematodes in Flowering and Ornamental Plants: Effect of Parasites on the Plants and Response of the Plants to the Presence of Nematodes." Vestnik Zoologii 49, no. 5 (October 1, 2015): 427–32. http://dx.doi.org/10.1515/vzoo-2015-0049.

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We studied the composition of the parasitic nematodes in the flowering and ornamental plants cultivated at the greenhouse facilities in the city of Kyiv. We found 9 species from the genera Meloidogyne Goeldi, 1887, Ditylenchus Filipjev, 1936, Pratylenchus Filipjev, 1934, Rotylenchus Filipjev, 1936, Tylenchorhynchus Cobb, 1913, Helicotylenchus Steiner, 1945, Paratylenchus Micoletzky, 1922, and Heterodera Schmidt, 1871. We also discovered the nature of the external manifestations of the nematodes’ effect on the plants and the plants’ response to the infection. Special attention was paid to the loss of the ornamental properties. In order to rank the loss of the ornamental properties of the plants under nematode infection, the scale (ranking system) was suggested. It includes 5 grades applicable to the exterior appearance of the plants, where “5” stands for “excellent”; “4” stands for “good” “3” stands for “satisfactory”; “2” stands for “unsatisfactory”; and “1” stands for “bad”. Th e joint parasitic activity of two nematode species (D. dipsaciі and R. robustus in asparagus, and D. dipsaciі and M. incognita in begonia) caused the highest level of infection progress observed (4 points), and this resulted in worsening of the exterior appearance of plants and in decrease of their ornamentality/ornamental properties down to “bad” (1 point). Th e parasitic activity of P. penetrans in coleus coincided with a high degree of the infection progress (3 to 3.5 points) while the ornamental properties of the plants corresponded to the gradations identified as “unsatisfactory” (2 points) and “bad” (1 point).
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Kurppa, Sirpa. "Root parasitic nematodes in nursery plants imported to Finland in 1980." Agricultural and Food Science 57, no. 3 (September 1, 1985): 155–62. http://dx.doi.org/10.23986/afsci.72197.

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Injurious nematodes were found in 201 of the investigated 670 plant stocks of 42 imported consignments. Infections by quarantine nematodes appeared in 100 stocks of 26 consignments, 15 there of including 3 or more infected plant stocks each. Root knot nematode, Meloidogyne spp., appeared in 81 stocks, i.e. 12 % of the investigated material. The infections were found in 40 plant species, relatively often in barberry, Berberis sp., and in peony, Paeonia sp.. Among garden roses, 26 out of 167 stocks investigated were infected by root knot nematodes. Root lesion nematode, Pratylenchus penetrans (Cobb) Chitwood & Oteifa, of P. convallariae Seinhorst was found in 28 plant stocks, i.e. 4 % of the investigated material. Several Pratylenchus-infected stocks were found among roses, raspberry and barberry. Potato rot nematode, Ditylenchus destructor Thorne, was found in one rose stock and related D. myceliophagus J. B. Goodey in 12 stocks of various plants. Several ectoparasitic species were found in very low numbers. Virus vectors, Trichodorus primitivus (de Man) Micoletzky and T. viruliferus Hooper, were detected in a total of four stocks, but too few for virus transmission tests. The transmissability ofthe detected nematodes was discussed, and the risks of introduction of nematode pests to the country was re-assessed.
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Dissertations / Theses on the topic "Parasitic in plants Nematoda"

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Soriano, Imelda Rizalina. "Novel inducible phytochemical defences against plant parasitic nematodes /." Title page, table of contents and summary only, 2004. http://web4.library.adelaide.edu.au/theses/09PH/09phs7141.pdf.

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Jordan, Katerina Serlemitsos. "The ecology of plant-parasitic nematodes and their antagonists on golf course greens turf in southern New England /." View online ; access limited to URI, 2005. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3188061.

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Soomro, M. H. "The effects of plant parasitic nematodes and plant growth regulators on root growth of graminacious plants." Thesis, University of Reading, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378682.

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Mahdy, Magdy. "Biological control of plant parasitic nematodes with antagonistic bacteria on different host plants." Bonn : Rheinische Friedrick-Wilhelms-Universität, Institut für Pflanzenkrankheiten, 2002. http://hss.ulb.uni-bonn.de/ulb_bonn/diss_online/landw_fak/2002/mahdy_magdy/0203.pdf.

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KC, Ashmit. "Plant-Parasitic Nematodes on Sugarbeet in North Dakota and Minnesota." Thesis, North Dakota State University, 2019. https://hdl.handle.net/10365/29884.

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Field surveys were conducted in the Red River Valley (RRV) of North Dakota and Minnesota during 2016 and 2017 to determine the incidence, abundance, and distribution of plant-parasitic nematodes (PPNs) on sugarbeet. Seventy-two and 65 % of the fields surveyed were positive for PPNs in 2016 and 2017, respectively. The major genera of PPNs identified from sugarbeet production fields were Heterodera, Helicotylenchus, Tylenchorhynchus, Paratylenchus, Pratylenchus, Paratrichodorus, Hoplolaimus, and Xiphinema. Eight of PPNs were identified at the species level using species-specific PCR assays, and sequencing of the ribosomal rDNA gene. Stubby-root nematode, Paratrichodorus allius, is one of the important nematode pests for sugarbeet production worldwide. An experiment was conducted to determine the host status of sugarbeet and their rotational crops for P. allius under greenhouse conditions. The results from two experiments indicated sugarbeet and most rotational crops support the reproduction of P. allius.
Sugarbeet Research and Education Board (Minn.)
Sugarbeet Research and Education Board (N.D.)
American Crystal Sugar Company
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Gutu, Ketema Tolossa. "Bioassay-guided phytochemical study of indigenous medicinal plants of Ethiopia." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/28964.

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In many developing countries, farmers and pastoralists still rely on their indigenous knowledge, practices and locally available plants to control nematode parasitic infections, both in livestock and humans. The overall aim of my thesis was to undertake bioassay-guided phyto-chemical study of extracts and their constituents from Ethiopian anti-parasitic plants used by healers to control gastrointestinal nematode parasites in livestock to validate their ethno-medicinal use and to characterise and identify their active ingredients. As a first experiment (Chapter Three), four types of crude extracts (water, 70% methyl-alcohol, absolute methanol and acetone) of four indigenous Ethiopian medicinal plants (Adenia species, Cissus ruspolii, Ipomoea eriocarpa and Euphorbia thymifolia) were screened against Teladorsagia circumcincta egg hatching in vitro, not only as a first step to validate the traditional healers claim but also to choose the most promising plant extract(s) for further phyto-chemical studies. The egg hatching inhibition (EHI) test results revealed that the anti-parasitic properties of these plants depended on plant species, dose, and solvent polarity. The water extracts of both C. ruspolii and Adenia sp. exhibited largest, up to 100% EHI but also larval migration inhibition activities, and were selected for further studies. The second experiment (Chapter Four) assessed the nature of active constituents in these extracts by physico-chemical methods. It was observed that the major constituents of both plant extracts responsible for the EHI activities are likely highly polar, water-soluble, small and moderately heat-labile molecules. The third and fourth experiments (Chapters Five and Six) consisted of separating Cissus ruspolii and Adenia sp. water extracts into discrete fractions by gel-permeation chromatography, EHI tests of Bio-Gel P-2 fractions followed by thin layer chromatography (TLC) profiling of these fractions to detect separated spots (in day light, under UV-light or after staining with various staining reagents) and also to see how elution patterns of separated spots affected by column parameters. The EHI tests on the fractions obtained revealed that the active constituents of C. ruspolii and Adenia sp. water crude extracts were eluted into few fractions based on their molecular sizes. The TLC profilings of these fractions identified spot patterns of active and inactive fractions, which allowed pooling of active constituents based on their EHI and TLC profiling into three pools for each plant. The fifth experiment (Chapter Seven) was to isolate and purify compounds from these pools using various preparative planar and column chromatographic methods. Sequential applications of column chromatography followed by preparative thin layer chromatography isolated and purified five active compounds from C. ruspolii and two active compounds from Adenia sp. The sixth experiment (Chapter Eight) was to characterize and propose/elucidate structures of compounds from the active fractions using chromatographic, analytical and spectroscopic methods. In this regard, the structures of two oleanane type triterpenoid saponins isolated from one of active fractions of Adenia sp. were proposed based on their mass spectrometry (MS) and nuclear magnetic resonance (NMR) data with support of compounds property, TLC and literature. Similar outcomes for C. ruspolii were not achieved due to lack of sufficient sample to run 13C-nuclear magnetic resonance spectroscopy and distortionless enhancement by polarization transfer (DEPT), contamination of some purified compounds with ill-characterised substance from the preparative TLC matrix and in some cases mass spectrometry (MS) and nuclear magnetic resonance (NMR) data did not support each other. The last experiment (Chapter Nine) was to assess anthelmintic efficacy and safety of C. ruspolii and Adenia sp. crude water extracts in Heligmosomoides bakeri infected mice. This in vivo test revealed that both plant extracts exhibited significant reduction in worm burdens and worm egg excretion, with moderate effects on haematology and organ weights at tolerated dosages. In conclusion, both in vitro and in vivo data revealed that Adenia sp. and C. ruspolii have anthelmintic properties, thus validating traditional healer claims and supporting ethno-medicinal use. The bioassay-guided phytochemical study resulted in the isolation of a number of active compounds from these plants, for some of which a structure has been proposed.
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Gutbrod, Philipp [Verfasser]. "Studies on fatty acid de novo synthesis and metabolism in free-living and parasitic nematodes and their feeding sites in plants / Philipp Gutbrod." Bonn : Universitäts- und Landesbibliothek Bonn, 2016. http://d-nb.info/1137010282/34.

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Rossi, Carlos Eduardo. "Levantamento, reprodução e patogenicidade de nematóides a fruteiras de clima subtropical e temperado." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-04092002-170644/.

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Objetivando melhor conhecimento a respeito dos nematóides encontrados associados a fruteiras de clima subtropical e temperado, coletaram-se 149 amostras de solo da rizosfera e de raízes de amoreira-preta, caquizeiro, framboeseira, macieira, marmeleiro, nespereira, nogueira-macadâmia, oliveira, pereira, pessegueiro e umezeiro em áreas de produção do Estado de São Paulo e em uma localidade de Minas Gerais. Como resultado desse levantamento, identificaram-se 11 gêneros e as espécies relacionadas a seguir: Aorolaimus nigeriensis, Discocriconemella degrissei, Helicotylenchus dihystera, H. erythrinae, H. microcephalus, H. pseudorobustus, Helicotylenchus spp., Hemicycliophora poranga, Meloidogyne hapla, M. incognita, M. javanica, Mesocriconema onoense, M. ornata, M. sphaerocephalum, M. xenoplax, Mesocriconema spp., Pratylenchus brachyurus, P. zeae, Rotylenchulus reniformis, Scutellonema brachyurus, Tylenchulus semipenetrans, Xiphinema brevicollum, X. elongatum, X. krugi, X. setariae, X. surinamense e Xiphinema spp.. Os três gêneros mais freqüentes foram Helicotylenchus, Mesocriconema e Xiphinema, presentes em 60,4; 55,0 e 30,2 % das amostras, respectivamente; as espécies mais comuns foram H. dihystera e M. xenoplax, ocorrendo em 49 e 38,3 % das amostras. Contudo, apenas M. incognita e M. javanica estavam associados a danos em pessegueiros cujos porta-enxertos não tinham resistência genética. Em casa de vegetação, avaliaram-se as reações de genótipos das citadas fruteiras, mais goiabeira, frente aos nematóides de galhas Meloidogyne incognita raça 2 e M. javanica. As plantas, individualmente inoculadas com 5000 ovos de cada espécie de nematóide, foram conduzidas em recipientes plásticos durante 120 dias. A caracterização das reações baseou-se na capacidade reprodutiva dos parasitos, determinando-se os índices de massas de ovos e de galhas, bem como os números de nematóides por sistema radicular e por grama de raízes. Apenas a cultivar GF-677 de Prunus persica x P. dulcis comportou-se como suscetível, possibilitando desenvolvimento e multiplicação dos dois nematóides. Os demais genótipos avaliados foram hospedeiros desfavoráveis ao desenvolvimento dos nematóides, sendo considerados resistentes, embora vários deles tivessem proporcionado restritas taxas de reprodução dos parasitos. Estudou-se ainda, também sob condição de casa de vegetação, a patogenicidade de M. incognita raça 2 em caquizeiro 'Kyoto', verificando-se correlação negativa entre os níveis populacionais iniciais utilizados (0, 160, 800, 4 000, 20 000 e 100 000 ovos por parcela) e a altura e a massa seca de raízes das plantas, após seis meses da inoculação. Tendo em vista que a intensa formação de galhas radiculares observada e o efeito negativo sobre os dois parâmetros de crescimento das plantas mostraram-se associados a taxas de reprodução muito baixas do parasito, considerou-se que a reação ocorrida foi de intolerância.
In order to achieve a better knowledge on the nematodes found associated with subtropical and temperate fruits, a total amount of 149 soil and root samples were collected from within apple, blackberry, japanese apricot, loquat, macadamia, olive, peach, pear, persimmon, quince and raspberry orchards located in the states of São Paulo and Minas Gerais, Southeastern Brazil. From this survey, a number of species belonging to eleven genera were identified, namely Aorolaimus nigeriensis, Discocriconemella degrissei, Helicotylenchus dihystera, H. erythrinae, H. microcephalus, H. pseudorobustus, Helicotylenchus spp., Hemicycliophora poranga, Meloidogyne hapla, M. incognita, M. javanica, Mesocriconema onoense, M. ornata, M. sphaerocephalum, M. xenoplax, Mesocriconema spp., Pratylenchus brachyurus, P. zeae, Rotylenchulus reniformis, Scutellonema brachyurus, Tylenchulus semipenetrans, Xiphinema brevicollum, X. elongatum, X. krugi, X. setariae, X. surinamense and Xiphinema spp. The most frequent genera were Helicotylenchus, Mesocriconema and Xiphinema, which occurred in 60.4, 54.4 and 30.2 % of the samples, respectively; the two most common species found were Helicotylenchus dihystera and Mesocriconema xenoplax, detected in 49.0 and 38.8 % of the samples, respectively. However, only Meloidogyne incognita and M. javanica could be associated with peach trees that were stunted or showed general symptoms of decline; in these cases, the rootstocks did not have genetic resistance to root-knot nematodes. The host suitability of several genotypes of the mentioned fruit species, plus guava, were evaluated in relation to Meloidogyne incognita race 2 and M. javanica under greenhouse conditions. The plants were individually inoculated with 5,000 nematode eggs and kept to grow in plastic bags for four months. Nematode reproductive rate was determined with basis on gall index, egg mass index and numbers of nematodes per root system and per gram of roots. Only the cultivar GF-677 of Prunus persica x P. dulcis was susceptible to both nematode species. All other genotypes were poor/resistant hosts, even that some allowed the parasites to reproduce at low rates. The pathogenicity of Meloidogyne incognita race 2 to persimmon cv. Kyoto was also studied under greenhouse conditions. After six months of the inoculation with increasing nematode population levels – 0; 160; 800; 4,000; 20,000; and 100,000 eggs/plant – a negative correlation with plant height and top dry weight values was obtained. As an intense root galling was associated with low nematode reproductive rates and some depressive effects on the plant growth, the reaction was rated as being of intolerance.
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Junior, Mauro Ferreira Bonfim. "Avaliação da capacidade reprodutiva de populações de Pratylenchus spp. frente a diferentes espécies vegetais." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/11/11135/tde-25022010-081502/.

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Os nematoides que atualmente tem sido classificados como P. coffeae, demonstram ampla variabilidade morfológica, molecular e quanto à reação à diferentes hospedeiros. Por conseguinte, é essencial que se identifique corretamente as espécies e que se conheça a capacidade de parasitismo em alguns hospedeiros, para que se possa estabelecer medidas de controle e estimar eventuais riscos da entrada de um patógeno em uma área com hospedeiro suscetível. Neste sentido, a presente pesquisa propõe, numa primeira parte, uma medida de controle de P. jaehni (K5), que é muito agressivo à cafeeiro arábico, baseada no uso de plantas má hospedeiras. Na segunda parte deste trabalho é realizada uma caracterização da reação de diferentes espécies vegetais à quatro populações de Pratylenchus spp. Em virtude do exposto, este estudo objetivou avaliar a reação de diferentes cultivares de feijoeiro comum frente à P. jaehni (K5), visando seu possível uso no manejo de áreas cafeeiras infestadas e caracterizar a reação de diferentes espécies vegetais de importância econômica (café, porta-enxertos cítricos, banana e sorgo) frente à quatro populações de Pratylenchus spp. As populações inciais utilizadas nos experimentos variaram entre 180 e 200 nematóides. Em todos os experimentos, os nematóides foram extraídos das raízes pelo método de Coolen e D´Herde (1972) e, eventualmente, do substrato pelo método de Jenkins (1964). Foram realizados três ensaios: i) o primeiro com feijoeiro comum, onde todas as cultivares utilizadas foram resistentes à P. jaehni (K5), inclusive na réplica; ii) o segundo com porta-enxertos cítricos, no qual somente o limão-cravo foi hospedeiro de P. jaehni (K5); iii) o terceiro, no qual foi utilizado café, limão-cravo, banana e sorgo para o conhecimento das respectivas reações frente à 4 populações de Pratylenchus spp. Neste último experimento ocorreu uma reação hospedeira diferenciada para cada população. De acordo com os resultados, concluise que as cultivares de feijoeiro comum utilizadas apresentam potencial de uso em áreas cafeeiras infestadas por P. jaehni (K5), em consórcio ou em áreas de renovação de cafezal, e que as populações de Pratylenchus spp. são capazes de se reproduzir de forma diferenciada frente às espécies vegetais testadas.
Nematode populations that have been classified as P. coffeae show wide morphological, molecular and host range variability. Therefore, is essential the correct identification of the species and the knowledge about its parasitism capacity on some hosts, to ensure appropriate control measures and to estimate the entry risks of a pathogen in an area with susceptible host. In this sense, the present research report, firstly, propose a control measure of P. jaehni (K5), which is very aggressive to the arabic coffee, based on the use of poor host plants. In the second part, was carried out a host status evaluation of different plant species to four populations of Pratylenchus spp. In this context, were evaluated the reaction of different common bean cultivars to P. jaehni (K5), for its possible use in management of coffee areas infested with this nematode, and characterized the response of different economic important plant species (coffee, citrus rootstocks, banana and sorghum) to four populations of Pratylenchus spp (IB01P, IB02P, K5 e C1). The initial population used in experiments ranged between 180 and 200 nematodes. In all experiments, nematodes were extracted from roots by Coolen e D\'Herde´s method (1972) and eventually from the substrate by Jenkins´ method (1964). Three assays were conducted and results was as following: i) in the first one, with common bean, all tested cultivars were resistant to P. jaehni (K5), including the replica; ii) in the second one, with rootstocks, only rangpur lime was a good host of P. jaehni (K5); iii) in the third one, in which was used coffee, rangpur lime, banana and grain sorghum, was observed a differential host reaction for each nematode population evaluated. According to the present results, we suggest that common bean cultivars tested have great potential for use, or in intercropping or in crop rotation, in coffee areas infested by P. jaehni (K5) and populations of Pratylenchus spp. have different reproductive fitness in the plants species tested.
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Tomazini, Melissa Dall'Oglio. "Pratylenchus coffeae em cafeeiros: efeito de densidades populacionais do nematóide e testes com genótipos." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11146/tde-25032004-140755/.

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O nematóide das lesões Pratylenchus coffeae é um dos principais parasitos do cafeeiro e de outras culturas e sua variabilidade biológica, que dificulta a adoção de métodos de controle, contribui para aumentar a sua importância no Brasil. Pela importância da cafeicultura e a falta de estudos com esse nematóide no Brasil, foram realizados experimentos com dois de seus isolados (K5 e M2), com os objetivos de correlacionar densidades populacionais do nematóide aos danos causados e estabelecer possíveis fontes de resistência de cafeeiros ao isolado K5. Foram testadas diferentes densidades populacionais iniciais do isolado M2 em plantas (seis pares de folhas) e plântulas (dois pares de folhas) do cafeeiro arábico ‘Catuaí Vermelho’. As densidades populacionais utilizadas foram de 0, 333, 1.000, 3.000 e 9.000 nematóides por plântula ou planta. A avaliação ocorreu aproximadamente cinco (plântulas) e sete (plantas) meses após a inoculação. Os resultados mostraram que houve uma acentuada redução do crescimento das plântulas, bem como massa fresca das raízes e massa seca da parte aérea, já a partir das densidades mais baixas. A variação populacional (Pf/Pi) foi menor que um (1,0) para todas as densidades de inóculo, indicando que esta cultivar, no estágio de plântulas com dois pares de folhas, mostrou-se intolerante ao parasitismo. Em relação à inoculação das plantas, já com seis pares de folhas, não houve diferenças significativas nas variáveis analisadas e ocorreram decréscimos populacionais do nematóide, indicando que, nessas condições, ‘Catuaí Vermelho’ mostrou-se resistente ao isolado M2. Em relação ao isolado K5, foram realizados cinco experimentos, visando caracterizar as reações de genótipos de Coffea canephora ('Robusta' e 'Conilon'), além de C. arabica ‘Mundo Novo’, comparado às reações frente ao nematóide de galhas Meloidogyne incognita raça 2. No Experimento 1, foram utilizadas plantas de C. arabica ‘Mundo Novo’, inoculadas com 1.480 nematóides por planta (isolado K5 e M. incognita). Após sete meses da inoculação foi feita a avaliação, mostrando que o crescimento populacional dos nematóides foi alto e a reação de suscetibilidade. Mesmo em mudas desenvolvidas de cafeeiro ‘Mundo Novo’, o isolado K5 destacou-se como tão agressivo quanto M. incognita. Os outros genótipos testados, de C. canephora, foram inoculados com 3.000 nematóides por planta. Nos Experimentos 2 e 3, as linhagens IAC 4804 e IAC 4810 de ‘Robusta’ foram suscetíveis ao isolado K5, mas em um deles (IAC 4804) ocorreu grande variação entre as repetições em relação à M. incognita. Apenas o isolado K5 promoveu redução do crescimento do cafeeiro, evidenciado na variável massa fresca das raízes, em ambas as linhagens, sendo que IAC 4810 comportou-se como resistente a M. incognita. No caso de C. canephora ‘Conilon’, ambas as linhagens testadas (IAC 4764 e IAC 4765) foram resistentes ao isolado K5 e suscetíveis a M. incognita.
The lesion-nematode Pratylenchus coffeae is a major pest of coffee and other economic crops and its biological variability, which often makes difficult the adoption of control methods, contributes to increase the importance of this parasite in Brazil. Due to the importance of coffee production and the lack of studies involving this nematode species in Brazil, experiments were set with two of its available isolates (K5 and M2) to correlate initial population densities with the damage caused on coffee plants and to establish possible resistance sources in relation to the isolate K5. Different population densities of isolate M2 were tested in plants (six pairs of leaves) and seedlings (two pairs of leaves) of Coffea arabica ‘Catuaí Vermelho’. The population densities (Pi) were: 0, 333, 1.000, 3.000 and 9.000 nematodes per seedling or plant. The evaluation was done at approximately five (seedlings) and seven (plants) months after inoculation. The results showed that there was a marked reduction of the height, as well as root fresh weight and shoot dry weight of the seedlings, starting from the lower Pi values. The nematode population decreased (Pf/Pi < 1), indicating that this cultivar, at the seedling stage, was intolerant to parasitism. In relation to the inoculation of older plants, there were no significant differences in the growth parameters and the nematode population also decreased allowing ‘Catuaí Vermelho’ to be rated as resistant to the isolate M2. In relation to isolate K5, five experiments (referred to as 1, 2, 3, 4, and 5) were set to characterize the reaction of different genotypes of Coffea canephora ('Robusta' and 'Conilon') and C. arabica ‘Mundo Novo', as compared with their reaction to the root-knot nematode Meloidogyne incognita race 2. In Experiment 1, plants of C. arabica ‘Mundo Novo’ were inoculated with 1,480 nematodes per plant (K5 and M. incognita). The final evaluation after seven months of the inoculation showed a high populational increase of the nematodes and that both were pathogenic at a same extent. The other genotypes tested, belonging to C. canephora, were inoculated with 3,000 nematodes per plant. The genotypes (IAC 4804 and IAC 4810) of ‘Robusta’ were susceptible to isolate K5, but in one of them (IAC 4804) there was great variation among the repetitions in relation to M. incognita. The isolate K5 caused marked reduction in the growth of coffee Robusta plants as evidenced particularly through the root fresh weight values in both tested genotypes; in addition, IAC 4810 was rated as resistant to M. incognita. With regard to C. canephora 'Conilon', both tested genotypes (IAC 4764 and IAC 4765) were resistant to isolate K5 and susceptible to M. incognita.
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Books on the topic "Parasitic in plants Nematoda"

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L, Krallʹ Ė. Root parasitic nematodes: Family Hoplolaimidae. New Delhi: Oxonian Press, 1985.

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L, Krallʹ Ė. Root parasitic nematodes: Family Hoplolaimidae. New Delhi: Published for the U.S. Dept. of Agriculture and the National Science Foundation by Amerind, 1985.

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Root parasitic nematodes: Family hoplolaimidae. Leiden: E.J. Brill, 1990.

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Mai, W. F. Plant-parasitic nematodes: A pictorial key to genera. 5th ed. Ithaca: Comstock Pub. Associates, Cornell University Press, 1996.

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Wasim, Ahmad, ed. Dorylaimida: Free-living, predaceous and plant-parasitic Nematodes. Leiden: E.J. Brill, 1992.

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Grandison, Gordon S. Plant-parasitic nematodes of American Samoa. Noumea, New Caledonia: South Pacific Commission, 1996.

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Maqbool, M. A. Distribution & host association of plant parasitic nematodes in Pakistan. Karachi, Pakistan: National Nematological Research Centre, University of Karachi, 1992.

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Classification and distribution of plant parasitic nematodes in Pakistan. Karachi, Pakistan: National Nematological Research Centre, University of Karachi, 1986.

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Tylenchida: Parasites of plants and insects. 2nd ed. Wallingford, Oxon: CABI Pub., 2000.

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Siddiqi, Mohammad Rafiq. Tylenchida: Parasites of plants and insects. Farnham Royal, Slough: Published on behalf of the Commonwealth Institute of Parasitology by the Commonwealth Agricultural Bureaux, 1985.

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Book chapters on the topic "Parasitic in plants Nematoda"

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Wesemael, Wim. "Screening plants for resistance/susceptibility to plant-parasitic nematodes." In Techniques for work with plant and soil nematodes, 60–70. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781786391759.0060.

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Abstract This chapter provides information on the methods for initial screening to determine the resistance or susceptibility of plants, cultivars or breeding lines to plant parasitic nematodes. Specific protocols for screening and further resistance breeding on several plant-nematode combinations are described and practical guidelines for screening of Musa germplasm and several screening procedures for cyst nematodes are presented.
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Wesemael, Wim. "Screening plants for resistance/susceptibility to plant-parasitic nematodes." In Techniques for work with plant and soil nematodes, 60–70. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781786391759.0004.

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Abstract This chapter provides information on the methods for initial screening to determine the resistance or susceptibility of plants, cultivars or breeding lines to plant parasitic nematodes. Specific protocols for screening and further resistance breeding on several plant-nematode combinations are described and practical guidelines for screening of Musa germplasm and several screening procedures for cyst nematodes are presented.
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Valadas, Vera, Margarida Espada, Tânia Nobre, Manuel Mota, and Birgit Arnholdt-Schmitt. "AOXin parasitic nematodes." In Alternative respiratory pathways in higher plants, 315–18. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118789971.ch22.

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Haque, Ziaul, and Mujeebur Rahman Khan. "Rotylenchulidae: Rotylenchulus species." In Handbook of invasive plant-parasitic nematodes, 407–20. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789247367.0012.

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Abstract The reniform nematodes of the genus Rotylenchulus are sedentary and semi-endoparasites of plants. This chapter includes information on: authentic identification; geographical distribution; risk of introduction; host ranges; symptoms; biology and ecology; planting material liable to carry the nematode; chance of establishment; likely impact; phytosanitary measures; and a detailed account of diagnosis procedures, such as sampling, isolation/detection and identification with morphological and molecular characterization, of invasive Rotylenchulus species.
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Haque, Ziaul, and Mujeebur Rahman Khan. "Introduction." In Handbook of invasive plant-parasitic nematodes, 1–17. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789247367.0001.

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Abstract This chapter introduces some plant-parasitic nematodes and discusses their agricultural importance. It describes nematode diversity and the effects of global agricultural trade on nematode spread. It defines invasive plant-parasitic nematodes and presents the assessment criteria for a nematode as an invasive species. Invasiveness ratings (scores) are proposed for categorizing low, medium and highly invasive nematodes. Tabulated data are also given on crop losses caused by plant-parasitic nematodes to different agricultural crops.
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Haque, Ziaul, and Mujeebur Rahman Khan. "Belonolaimidae: Belonolaimus species." In Handbook of invasive plant-parasitic nematodes, 100–105. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789247367.0004.

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Abstract The sting nematode, Belonolaimus spp., is one of the most destructive nematode pests of turfgrass and attacks a wide range of monocotyledonous plants and gymnosperms, including vegetables, legumes, cereals, etc. This chapter includes information on: geographical distribution; host ranges; symptoms; biology and life cycle; ecology; physiological races; economic importance; invasiveness; pest risk analysis; movement and means of dispersal; management measures; and detailed account of diagnosis procedures, such as morphological, biochemical, cytogenetic and molecular characterization, of Belonolaimus species.
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Wieczorek, Krzysztof, and Georg J. Seifert. "Plant Cell Wall Signaling in the Interaction with Plant-Parasitic Nematodes." In Biocommunication of Plants, 139–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23524-5_8.

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Haque, Ziaul, and Mujeebur Rahman Khan. "Anguinidae: Anguina and Ditylenchus species." In Handbook of invasive plant-parasitic nematodes, 18–57. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789247367.0002.

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Abstract The gall-forming nematodes, Anguina spp., are obligate parasites and attack aerial plants parts of cereals and forage grasses. The genus Ditylenchus contains a large number of species which are mostly myceliophagous. A few species are phytophagous, but are of great importance as they attack more than 1200 species of cultivated and wild plants. This chapter includes information on: geographical distribution; host ranges; symptoms; biology and life cycle; economic importance; movement and means of dispersal; pest risk analysis; invasiveness; management measures; and detailed account of diagnosis procedures, such as morphological, biochemical, cytogenetic and molecular characterization, of Anguina and Ditylenchus species.
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Haque, Ziaul, and Mujeebur Rahman Khan. "Aphelenchidae: Aphelenchoides and Bursaphelenchus species." In Handbook of invasive plant-parasitic nematodes, 58–99. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789247367.0003.

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Abstract This chapter provides information on: geographical distribution; host plants; symptoms; biology and life cycle; economic importance; movement and means of dispersal; pest risk analysis; invasiveness rating; management measures; and detailed account of diagnosis procedures, such as morphological, biochemical, and molecular characterization, of Aphelenchoides and Bursaphelenchus species.
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Haque, Ziaul, and Mujeebur Rahman Khan. "Trichodoridae: Nanidorus, Paratrichodorus and Trichodorus species." In Handbook of invasive plant-parasitic nematodes, 426–38. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789247367.0014.

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Abstract This chapter provides information on geographical distribution; host plants; vectors; symptoms; biology and life cycle; economic importance; movement and means of dispersal; pest risk analysis; invasiveness rating; management measures; and detailed account of diagnosis procedures, such as morphological and molecular characterization, of Nanidorus, Paratrichodorus and Trichodorus species.
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Conference papers on the topic "Parasitic in plants Nematoda"

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Makhubu, FN, MC Khosa, and LJ McGaw. "Can plants with good anthelmintic activity against free-living and animal parasitic nematodes be effective against plant parasitic nematodes?" In 67th International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA) in cooperation with the French Society of Pharmacognosy AFERP. © Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-3399736.

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Hida, Hirotaka, Hidetaka Nishiyama, Shinichiro Sawa, Tetsuya Higashiyama, and Hideyuki Arata. "Behavior analysis of plant-parasitic nematode in a microchannel." In 2013 International Symposium on Micro-NanoMechatronics and Human Science (MHS). IEEE, 2013. http://dx.doi.org/10.1109/mhs.2013.6710465.

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Westerdahl, Becky. "Using trap crops to manage plant parasitic nematodes on vegetable crops." In VII South-Eastern Europe Syposium on Vegetables & Potatoes. University of Maribor Press, 2017. http://dx.doi.org/10.18690/978-961-286-045-5.70.

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Tylka, Gregory L. "Plant-Parasitic Nematodes on Corn: Old Foes and a Possible New Nemesis." In Proceedings of the 16th Annual Integrated Crop Management Conference. Iowa State University, Digital Press, 2007. http://dx.doi.org/10.31274/icm-180809-891.

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Amrit, Ratthasart, Witsaroot Sripumkhai, Supanit Porntheeraphat, Wutthinan Jeamsaksiri, Nuchanart Tangchitsomkid, and Boonsong Sutapun. "Multichannel microfluidic chip for rapid and reliable trapping and imaging plant-parasitic nematodes." In SPIE SeTBio, edited by Naoshi Kondo. SPIE, 2013. http://dx.doi.org/10.1117/12.2031945.

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Lai, Hsien-Hua, Yu-Tang Chang, Jiue-In Yang, and Shih-Fang Chen. "Application of Convolutional Neural Networks on the Development of Plant-Parasitic Nematode Image Identification System." In 2021 ASABE Annual International Virtual Meeting, July 12-16, 2021. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2021. http://dx.doi.org/10.13031/aim.202100870.

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Arancibia, Mirari, Diana Iler-Iler, Gabriel Moreno-Toasa, and Roman Rodríguez-Maecker. "Thyme and rosemary essential oils as an alternative control of plant-parasitic nematodes." In MOL2NET 2016, International Conference on Multidisciplinary Sciences, 2nd edition. Basel, Switzerland: MDPI, 2017. http://dx.doi.org/10.3390/mol2net-02-03900.

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Bianchini, Franco, Gianfranco Fenu, Giulia Giordano, and Felice Andrea Pellegrino. "Model-free tuning of plants with parasitic dynamics." In 2017 IEEE 56th Annual Conference on Decision and Control (CDC). IEEE, 2017. http://dx.doi.org/10.1109/cdc.2017.8263713.

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Johnson, Timothy B. "Development of two novel microbes for management of insects, mites, and plant parasitic nematodes in North and Central America and Europe." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.109032.

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Valente, AH, BM de Roode, AR Williams, HT Simonsen, and SM Thamsborg. "Parasites and plants – bioactive compounds with anti-parasitic effect from Cichorium intybus." In 67th International Congress and Annual Meeting of the Society for Medicinal Plant and Natural Product Research (GA) in cooperation with the French Society of Pharmacognosy AFERP. © Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-3399717.

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