Log in

Relevant bibliographies by topics / <i>Phytophthora parasitica</i> / Journal articles

To see the other types of publications on this topic, follow the link: <i>Phytophthora parasitica</i>.

Journal articles on the topic '<i>Phytophthora parasitica</i>'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic '<i>Phytophthora parasitica</i>.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Ann, P. J., and W. H. Ko. "Survey of enzyme activity on solid media in Phytophthora." Canadian Journal of Botany 68, no. 1 (1990): 139–43. http://dx.doi.org/10.1139/b90-018.

Full text

Abstract:

Among 53 isolates of Phytophthora parasitica, Phytophthora palmivora, Phytophthora capsici, and Phytophthora cinnamomi tested, there was no difference in ability to produce lipase, phosphatase, or urea on solid media. However, only some isolates of P. parasitica and P. palmivora produced DNase or pectate transeliminase. The ability to produce pectin depolymerase or amylase varied greatly among isolates of some species. Zoospore progeny of A1 and A2 isolates of P. parasitica tested were relatively uniform and were similar to their parents. However, progeny from oospores produced by the same iso

APA, Harvard, Vancouver, ISO, and other styles

2

Swiecki, T. J., and J. D. MacDonald. "Soil Salinity Enhances Phytophthora Root Rot of Tomato but Hinders Asexual Reproduction by Phytophthora parasitic." Journal of the American Society for Horticultural Science 116, no. 3 (1991): 471–77. http://dx.doi.org/10.21273/jashs.116.3.471.

Full text

Abstract:

Exposure of tomato plants (Lycopersicon esculentum Mill.) to salinity stress either before or after inoculation with Phytophthora parasitica increased root and crown rot severity relative to nonstressed controls. The synergy between salinity and P. parasitic was most pronounced on young (prebloom) plants and least pronounced on older (postbloom) plants. Salt stressed, inoculated plants had significantly reduced top weight, significantly more root necrosis, greater incidence of crown necrosis, and significantly greater mortality. Increased disease severity occurred even though experiments showe

APA, Harvard, Vancouver, ISO, and other styles

3

Wu, Chih-Hang, Hao-Zhi Yan, Li-Fei Liu, and Ruey-Fen Liou. "Functional Characterization of a Gene Family Encoding Polygalacturonases in Phytophthora parasitica." Molecular Plant-Microbe Interactions® 21, no. 4 (2008): 480–89. http://dx.doi.org/10.1094/mpmi-21-4-0480.

Full text

Abstract:

Phytophthora parasitica is an oomycete plant pathogen that causes severe disease in a wide variety of plant species. In our previous study, we discovered a multigene family encoding endopolygalacturonases (endoPG) in Phytophthora parasitica. Here, we screened the genomic library of Phytophthora parasitica for the genes encoding endoPG named pppg2 through pppg10, and analyzed their functions. Results obtained by real-time quantitative reverse transcriptase-polymerase chain reaction demonstrated that some of these genes are highly induced during plant infection, which suggests their important ro

APA, Harvard, Vancouver, ISO, and other styles

4

Gu, Yu-Huan, and Wen-Hsiung Ko. "Creation of hybrid vigor through nuclear transplantation in Phytophthora." Canadian Journal of Microbiology 47, no. 7 (2001): 662–66. http://dx.doi.org/10.1139/w01-074.

Full text

Abstract:

When isolated nuclei of a diploid oomycete, Phytophthora parasitica, were fused with protoplasts of another strain of the same species, the regenerated nuclear hybrids grew faster than the parental isolates. Such a phenomenon did not occur in hybrids regenerated from mitochondrionprotoplast or protoplastprotoplast fusion products between these two strains. These results indicate that hybrid vigor is the result of the interaction between two different kinds of nuclei, but not between mitochondria, and they suggest that the presence of mitochondria from nuclear donor cells represses the expres

APA, Harvard, Vancouver, ISO, and other styles

5

Gu, Yu-Huan, and Wen-Hsiung Ko. "Evidence for mitochondrial gene control of mating types in Phytophthora." Canadian Journal of Microbiology 51, no. 11 (2005): 934–40. http://dx.doi.org/10.1139/w05-073.

Full text

Abstract:

When protoplasts carrying metalaxyl-resistant (Mr) nuclei from the A1 isolate of Phytophthora parasitica were fused with protoplasts carrying chloroneb-resistant (Cnr) nuclei from the A2 isolate of the same species, fusion products carrying Mr nuclei were either the A2 or A1A2 type, while those carrying Cnr nuclei were the A1, A2, or A1A2 type. Fusion products carrying Mr and Cnr nuclei also behaved as the A1, A2, or A1A2 type. The result refutes the hypothesis that mating types in Phytophthora are controlled by nuclear genes. When nuclei from the A1 isolate of P. parasitica were fused with pr

APA, Harvard, Vancouver, ISO, and other styles

6

Bowman, Kim D. "Screening Trifoliate Hybrid Citrus Rootstocks for Resistance to Phytophthora parasitica by in Vitro Inoculation." HortScience 31, no. 4 (1996): 591c—591. http://dx.doi.org/10.21273/hortsci.31.4.591c.

Full text

Abstract:

Phytophthora parasitica Dast. causes several root and trunk diseases of citrus, including damping-off, root rot, foot rot, and gummosis. Phytophthora resistance is needed in Citrus rootstocks and is available in Poncirus trifoliata (L.) Raf. and some hybrids between Citrus and P. trifoliata. Field or greenhouse tests of rootstocks require large amounts of space and time. To provide a preliminary indication of rootstock resistance to P. parasitica, nucellar seedlings of P. trifoliata selections, and Citrus × P. trifoliata hybrids were tested for response to P. parasitica by in vitro inoculation

APA, Harvard, Vancouver, ISO, and other styles

7

Fichtner, E. J., D. L. Hesterberg, and H. D. Shew. "Nonphytotoxic Aluminum-Peat Complexes Suppress Phytophthora parasitica." Phytopathology® 91, no. 11 (2001): 1092–97. http://dx.doi.org/10.1094/phyto.2001.91.11.1092.

Full text

Abstract:

Amendment of peat-based potting media with Al2(SO4)3 suppresses damping-off of Vinca (Catharanthus roseus) caused by Phytophthora parasitica. The species of aluminum (Al) responsible for disease suppression have not been identified. The objective of this study was to determine the effects of amount and pH of Al2(SO4)3 amendment solutions on survival of P. parasitica. In separate experiments, peat was amended with Al2(SO4)3 solutions adjusted to pH 4 or 6 at either 0.0158 or 0.0079 g of Al per gram of peat. Amended peat was placed in Büchner funnels maintained at -2.5 kPa matric potential. Peat

APA, Harvard, Vancouver, ISO, and other styles

8

Meng, Yuling, Qiang Zhang, Wei Ding, and Weixing Shan. "Phytophthora parasitica: a model oomycete plant pathogen." Mycology 5, no. 2 (2014): 43–51. http://dx.doi.org/10.1080/21501203.2014.917734.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Dirac, Monica F., John A. Menge, and Monica A. Madore. "Comparison of Seasonal Infection of Citrus Roots by Phytophthora citrophthora and P. nicotianae var. parasitica." Plant Disease 87, no. 5 (2003): 493–501. http://dx.doi.org/10.1094/pdis.2003.87.5.493.

Full text

Abstract:

Excised feeder roots from mature citrus trees located in climatically different regions were infected with zoospores of Phytophthora citrophthora and P. nicotianae var. parasitica at different times of the year under identical laboratory conditions. Zoospores encysted on and caused infection in roots from all locations year round. Both pathogens had the most encysted zoospores on roots from November to January and the least from March to May. Infection by P. nicotianae var. parasitica was consistently higher than P. citrophthora in the excised summer roots (May to September) and lower in Janua

APA, Harvard, Vancouver, ISO, and other styles

10

Dalio, R. J. D., H. J. Maximo, T. S. Oliveira, et al. "Phytophthora parasitica Effector PpRxLR2 Suppresses Nicotiana benthamiana Immunity." Molecular Plant-Microbe Interactions® 31, no. 4 (2018): 481–93. http://dx.doi.org/10.1094/mpmi-07-17-0158-fi.

Full text

Abstract:

Phytophthora species secrete several classes of effector proteins during interaction with their hosts. These proteins can have multiple functions including modulation of host physiology and immunity. The RxLR effectors have the ability to enter plant cells using the plant machinery. Some of these effectors have been characterized as immunity suppressors; however, very little is known about their functions in the interaction between Phytophthora parasitica and its hosts. Using a bioinformatics pipeline, we have identified 172 candidate RxLR effectors (CREs) in the isolate IAC 01_95 of P. parasi

APA, Harvard, Vancouver, ISO, and other styles

11

Chern, L. L., W. H. Ko та C. S. Tang. "Factors affecting yields of α hormones of Phytophthora parasitica obtained by adsorption". Canadian Journal of Microbiology 42, № 2 (1996): 172–76. http://dx.doi.org/10.1139/m96-025.

Full text

Abstract:

The conditions for improved yields of the α hormones of Phytophthora parasitica compared with those of the original technique established by Ko are described. Both hormones al and α2 were adsorbed on the Millipore filter by exposing both sides of the filter directly to freshly inoculated 40% V-8 agar blocks for 4 days. Usage of polycarbonate membrane in the original method to maintain sterility of the filter was replaced by sterilization of the filter with ethanol. Among five organic solvents tested, 95% ethanol was the most effective in extracting both α hormones from the Millipore filter. A

APA, Harvard, Vancouver, ISO, and other styles

12

Strong, Stephen S., Bridget K. Behe, C. Fred Deneke, Kira L. Bowen, and Gary J. Keever. "Cultivar and Spacing Effects on Transmission of Phytophthora parasitica in an Ebb-and-Flow Subirrigation System." Plant Disease 81, no. 1 (1997): 89–95. http://dx.doi.org/10.1094/pdis.1997.81.1.89.

Full text

Abstract:

Phytophthora parasitica was transmitted within 6 weeks from vinca (Catharanthus roseus) plants growing in infested potting mix, on the drain end of ebb-and-flow benches, to plants in noninfested potting mix. Transmission of Phytophthora was very low when potting mix was not pasteurized. When potting mix was steam pasteurized, infection of plants, disease incidence, and severity increased with time and decreased with distance from plants in infested pots. The cultivar Pretty in Pink was more susceptible to infection by P. parasitica than cv. Peppermint Cooler, allowing more rapid and severe dis

APA, Harvard, Vancouver, ISO, and other styles

13

Gaulin, Elodie, Nathalie Haget, Moustafa Khatib, Corentin Herbert, Martina Rickauer, and Arnaud Bottin. "Transgenic sequences are frequently lost in Phytophthora parasitica transformants without reversion of the transgene-induced silenced state." Canadian Journal of Microbiology 53, no. 1 (2007): 152–57. http://dx.doi.org/10.1139/w06-090.

Full text

Abstract:

Little data exist on the mechanism and stability of transformation in Phytophthora parasitica, a major oomycete parasite of plants. Here, we studied the stability of drug-resistant protoplast transformants by analyzing single-zoospore derivatives. We show that the transgenic sequences are not stably integrated into the chromosomes, resulting in the loss of drug resistance in single-zoospore derivatives. However, in strains where the P. parasitica gene encoding the CBEL elicitor was silenced by transformation with sense or antisense constructs, silencing is not reversed when the transgenic sequ

APA, Harvard, Vancouver, ISO, and other styles

14

Steddom, K., O. Becker, and J. A. Menge. "Repetitive Applications of the Biocontrol Agent Pseudomonas putida 06909-rif/nal and Effects on Populations of Phytophthora parasitica in Citrus Orchards." Phytopathology® 92, no. 8 (2002): 850–56. http://dx.doi.org/10.1094/phyto.2002.92.8.850.

Full text

Abstract:

Pseudomonas putida 06909-rif/nal was applied repetitively during the irrigation season in two citrus orchards over 3 years. In a mature (50-yearold) commercial citrus orchard covering 2.02 ha, weekly applications of Pseudomonas putida 06909-rif/nal with an in-field fermentor resulted in soil populations that fluctuated between 2.83 log CFU + 1 per g of soil and 4.35 log CFU + 1 per g of soil. Resulting rhizosphere populations of Phytophthora parasitica were significantly reduced in 1999 but not 1997 or 1998. In a newly planted citrus orchard, yearly applications of Pseudomonas putida 06909-rif

APA, Harvard, Vancouver, ISO, and other styles

15

Naveed, Zunaira, and Gul Ali. "Comparative Transcriptome Analysis between a Resistant and a Susceptible Wild Tomato Accession in Response to Phytophthora parasitica." International Journal of Molecular Sciences 19, no. 12 (2018): 3735. http://dx.doi.org/10.3390/ijms19123735.

Full text

Abstract:

Phytophthora parasitica is one of the most widespread Phytophthora species, which is known to cause multiple diseases in tomato and is capable of infecting almost all plant parts. Our current understanding of tomato-Phytophthora parasitica interaction is very limited and currently nothing is known at the whole genome or transcriptome level. In this study, we have analyzed and compared the transcriptome of a resistant and a susceptible wild tomato accession in response to P. parasitica infection using the RNA-seq technology. We have identified 2657 and 3079 differentially expressed genes (DEGs)

APA, Harvard, Vancouver, ISO, and other styles

16

Rojas-Rojas, Rafael, Carlos De león García, Víctor Heber Aguilar-Rincón, Ciro Velasco-Cruz, Ernestina Valadez-Moctezuma, and Javier Hernández-Morales. "Herencia de la resistencia a Phytophthora parasitica Dastur en jamaica." Revista Mexicana de Ciencias Agrícolas 11, no. 5 (2020): 1189–95. http://dx.doi.org/10.29312/remexca.v11i5.1964.

Full text

Abstract:

Para determinar la genética de la resistencia a Phytophthora parasitica en jamaica, se analizaron las medias generacionales de cinco líneas resistentes y cinco susceptibles para estimar los parámetros genéticos de la resistencia en cruzas de jamaica. El análisis mostró que los efectos aditivos fueron más importantes que efectos de dominancia para la resistencia a P. parasitica. La heredabilidad, en sentido amplio, fue de 37%. Los resultados obtenidos indican que un programa de pedigree puede ser efectivo y el más adecuado para incrementar la resistencia genética a P. parasitica.

APA, Harvard, Vancouver, ISO, and other styles

17

Rosa, Daniel Dias, Marcos Antonio Machado, Maria Luisa Penteado Natividade Targon, and Edson Luiz Furtado. "Diversidade de Phytophthora parasitica isolados de Citrus usando seqüências de nucleotídeos da região ITS-5.8S rDNA." Summa Phytopathologica 32, no. 2 (2006): 188–91. http://dx.doi.org/10.1590/s0100-54052006000200017.

Full text

Abstract:

Realizou-se estudo para caracterização e verificação da diversidade genética de Phytophthora parasitica, agente causador da gomose dos citros. Quatorze isolados de Phytophthora parasitica, provenientes do Estado de São Paulo, foram seqüenciados a partir das regiões internas transcritas (ITS1 e ITS2) do gene 5.8S. Obtiveram-se seqüências de 812 pb a 860 pb que foram comparadas com seqüências de outras espécies de Phytophthora spp depositadas no NCBI. Foram feitos estudos filogenéticos, utilizando-se o método "neighbor-joining" com 1000 "bootstrap" e construído o dendrograma mais representativo.

APA, Harvard, Vancouver, ISO, and other styles

18

Colas, Virginie, Sandrine Conrod, Paul Venard, Harald Keller, Pierre Ricci, and Franck Panabières. "Elicitin Genes Expressed In Vitro by Certain Tobacco Isolates of Phytophthora parasitica Are Down Regulated During Compatible Interactions." Molecular Plant-Microbe Interactions® 14, no. 3 (2001): 326–35. http://dx.doi.org/10.1094/mpmi.2001.14.3.326.

Full text

Abstract:

Phytophthora spp. secrete proteins called elicitins in vitro that can specifically induce hypersensitive response and systemic acquired resistance in tobacco. In Phytophthora parasitica, the causal agent of black shank, most isolates virulent on tobacco are unable to produce elicitins in vitro. Recently, however, a few elicitin-producing P. parasitica strains virulent on tobacco have been isolated. We investigated the potential diversity of elicitin genes in P. parasitica isolates belonging to different genotypes and with various virulence levels toward tobacco as well as elicitin expression p

APA, Harvard, Vancouver, ISO, and other styles

19

Chern, L. L., and W. H. Ko. "Effect of light on hormonal regulation of sexual reproduction in Phytophthora parasitica." Canadian Journal of Botany 71, no. 12 (1993): 1672–74. http://dx.doi.org/10.1139/b93-203.

Full text

Abstract:

A1 and A2 isolates of Phytophthora parasitica were exposed to light at different stages of sexual development to study the mode of action of light on sexual reproduction. Exposure to light during the process of sexual reproduction reduced the number of oospores produced to about 7% of that produced in darkness. Light was inhibitory to production of α hormones but not receptors of these hormones by both A1 and A2 isolates of P. parasitica. However, after being produced, α hormones were stable under light. The number of oospores produced was greatly reduced when A1 and A2 cultures were exposed t

APA, Harvard, Vancouver, ISO, and other styles

20

Gu, Y. H., and W. H. Ko. "Transplantation and subsequent behavior of mitochondria in cells of Phytophthora." Canadian Journal of Microbiology 46, no. 11 (2000): 992–97. http://dx.doi.org/10.1139/w00-093.

Full text

Abstract:

Mitochondria isolated from streptomycin-resistant (Sr) protoplasts of Phytophthora parasitica were transferred into chloramphenicol-resistant (Cpr) protoplasts of P. parasitica or Phytophthora capsici with an average successful rate of 1.7 × 10-4, using a selective medium containing streptomycin. No colonies appeared when self-fusion products of donor mitochondria or recipient protoplasts were exposed to the selective medium. Mitochondria isolated from Cpr protoplasts of P. capsici were also transferred into Sr protoplasts of P. parasitica with a similar success rate using a selective medium c

APA, Harvard, Vancouver, ISO, and other styles

21

Chern, L. L., P. J. Ann, and H. R. Young. "Root and Foot Rot of Loquat in Taiwan Caused by Phytophthora." Plant Disease 82, no. 6 (1998): 651–56. http://dx.doi.org/10.1094/pdis.1998.82.6.651.

Full text

Abstract:

Loquat trees growing in central Taiwan were inflicted with a disease causing wilting and death of plants due to severe foot and root rot. The vascular tissues of all infected plants turned brown. Typical as well as atypical isolates of Phytophthora parasitica were isolated from the diseased basal stem and root tissues but not from the discolored vascular tissues. Symptoms observed in the field were reproduced when roots and stems of loquat seedlings were inoculated with zoospores of atypical isolates of P. parasitica; whereas only fibrous root rot resulted from inoculation with typical isolate

APA, Harvard, Vancouver, ISO, and other styles

22

Zhang, Qiang, Ruirui Feng, Qing Zheng, et al. "Population Genetic Analysis of Phytophthora parasitica From Tobacco in Chongqing, Southwestern China." Plant Disease 103, no. 10 (2019): 2599–605. http://dx.doi.org/10.1094/pdis-05-18-0879-re.

Full text

Abstract:

Tobacco black shank, caused by Phytophthora parasitica, is one of the most notorious tobacco diseases and causes huge economic losses worldwide. Understanding the genetic variation of P. parasitica populations is essential to the development of disease control measures. In this research, 210 simple sequence repeat (SSR) markers for P. parasitica were identified, 10 of which were polymorphic among nine reference strains. We further performed population genetic analysis of 245 P. parasitica isolates randomly collected from tobacco fields in Chongqing for mating type, molecular variation at 14 SS

APA, Harvard, Vancouver, ISO, and other styles

23

Ko, W. H., C. J. Lee, and H. J. Su. "Chemical Regulation of Mating Type in Phytophthora parasitica." Mycologia 78, no. 1 (1986): 134. http://dx.doi.org/10.2307/3793390.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Ko, W. H., C. J. Lee, and H. J. Su. "Chemical Regulation of Mating Type in Phytophthora Parasitica." Mycologia 78, no. 1 (1986): 134–36. http://dx.doi.org/10.1080/00275514.1986.12025217.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Bruneteau, Maud, Isabelle Fabre, Jacky Perret та ін. "Antitumor active β-d-glucans from Phytophthora parasitica". Carbohydrate Research 175, № 1 (1988): 137–43. http://dx.doi.org/10.1016/0008-6215(88)80164-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Chang, T. T., and W. H. Ko. "Evidence for absence of hybridization in crosses between Phytophthora infestans and Phytophthora parasitica." Mycological Research 97, no. 6 (1993): 675–78. http://dx.doi.org/10.1016/s0953-7562(09)80146-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Picard, Karine, Yves Tirilly, and Nicole Benhamou. "Cytological Effects of Cellulases in the Parasitism of Phytophthora parasitica by Pythium oligandrum." Applied and Environmental Microbiology 66, no. 10 (2000): 4305–14. http://dx.doi.org/10.1128/aem.66.10.4305-4314.2000.

Full text

Abstract:

ABSTRACT The ubiquitous oomycete Pythium oligandrum is a potential biocontrol agent for use against a wide range of pathogenic fungi and an inducer of plant disease resistance. The ability ofP. oligandrum to compete with root pathogens for saprophytic colonization of substrates may be critical for pathogen increase in soil, but other mechanisms, including antibiosis and enzyme production, also may play a role in the antagonistic process. We used transmission electron microscopy and gold cytochemistry to analyze the intercellular interaction between P. oligandrum andPhytophthora parasitica. Gro

APA, Harvard, Vancouver, ISO, and other styles

28

CHENG, Shen, Li TIAN, Ying-Ning ZOU, Qiang-Sheng WU, Kamil KUČA, and Popy BORA. "Molecular responses of arbuscular mycorrhizal fungi in tolerating root rot of trifoliate orange." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 48, no. 2 (2020): 558–71. http://dx.doi.org/10.15835/nbha48211916.

Full text

Abstract:

Arbuscular mycorrhizal fungi (AMF) enhance plant disease resistance, while the underlying mechanisms in the molecular levels are not yet known. In this study, five-leaf-old trifoliate orange seedlings were inoculated with Funneliformis mosseae for 14 weeks and subsequently were infected by a citrus root rot pathogen Phytophthora parasitica by 7 days. The transcriptome results by Illumina HiSeq 4000 revealed that the percentage of Q30 bases reached 92.99% or above, and 29696 unigenes were annotated in a total of 63531 unigenes. 654 and 103 differentially expressed genes (DEGs) were respectively

APA, Harvard, Vancouver, ISO, and other styles

29

Dalio, Ronaldo José Durigan, Heros José Máximo, Tiago Silva Oliveira, et al. "Molecular Basis of Citrus sunki Susceptibility and Poncirus trifoliata Resistance Upon Phytophthora parasitica Attack." Molecular Plant-Microbe Interactions® 31, no. 3 (2018): 386–98. http://dx.doi.org/10.1094/mpmi-05-17-0112-fi.

Full text

Abstract:

Coevolution has shaped the molecular basis of an extensive number of defense mechanisms in plant-pathogen interactions. Phytophthora parasitica, a hemibiothrophic oomycete pathogen and the causal agent of citrus root rot and gummosis, interacts differently with Citrus sunki and Poncirus trifoliata, two commonly favored citrus rootstocks that are recognized as susceptible and resistant, respectively, to P. parasitica. The molecular core of these interactions remains elusive. Here, we provide evidence on the defense strategies employed by both susceptible and resistant citrus rootstocks, in para

APA, Harvard, Vancouver, ISO, and other styles

30

Barr, Donald J. S., and Paula M. E. Allan. "A comparison of the flagellar apparatus in Phytophthora, Saprolegnia, Thraustochytrium, and Rhizidiomyces." Canadian Journal of Botany 63, no. 1 (1985): 138–54. http://dx.doi.org/10.1139/b85-017.

Full text

Abstract:

The rootlet systems, kinetosomes, and transition zones in zoospores of Phytophthora parasitica, Thraustochytrium aureum, and Rhizidiomyces apophysatus and secondary zoospores of Saprolegnia diclina are compared. Rootlet systems in P. parasitica and S. diclina are very similar and there are only minor differences between these taxa in morphology of their transition zones. In P. parasitica and T. aureum a number of differences exist in the rootlet systems, but the position and orientation of individual rootlets are similar. There are also differences between these taxa in the alignment of their

APA, Harvard, Vancouver, ISO, and other styles

31

Gu, Y. H., and W. H. Ko. "Segregation following interspecific transfer of isolated nuclei between Phytophthora parasitica and P. capsici." Canadian Journal of Microbiology 46, no. 5 (2000): 410–16. http://dx.doi.org/10.1139/w00-016.

Full text

Abstract:

Nuclei isolated from metalaxyl-resistant (MR) protoplasts of Phytophthora parasitica were transferred into chloroneb-resistant (CnR) protoplasts of Phytophthora capsici and vice versa, with an average success rate of 2.6 × 10-4 (protoplasts with donor nuclei/regenerated protoplasts), using a selective medium containing only the fungicide tolerated by the nuclear donor. No colonies appeared when self-fusion products of donor nuclei or recipient protoplasts were exposed to the selective medium. Colonies produced by the nuclear transfer formed sectors commonly, and differed from the parental type

APA, Harvard, Vancouver, ISO, and other styles

32

Csinos, A. S. "Relationship of Isolate Origin to Pathogenicity of Race 0 and 1 of Phytophthora parasitica var. nicotianae on Tobacco Cultivars." Plant Disease 89, no. 3 (2005): 332–37. http://dx.doi.org/10.1094/pd-89-0332.

Full text

Abstract:

Flue-cured tobacco cultivars were evaluated for their reaction to race 0 and race 1 of Phytophthora parasitica var. nicotianae, the incitant of the disease tobacco black shank. Seventeen commercial tobacco cultivars having resistance derived from Fla 301 or a combination of Fla 301 and Fla 105 were subjected to root or stem inoculation by 22 different isolates of P. parasitic var. nicotianae collected from across the Georgia tobacco-growing belt. An adapted stem inoculation technique using field-grown tobacco indicator cvs. K-326, NC-71, Coker 371 Gold, and the breeding line NC-1071 was used t

APA, Harvard, Vancouver, ISO, and other styles

33

Jahnke, K. D., G. Leipoldt, and H. H. Prell. "Studies on preparation and viability of Phytophthora parasitica spheroplasts." Transactions of the British Mycological Society 89, no. 2 (1987): 213–20. http://dx.doi.org/10.1016/s0007-1536(87)80155-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Hee, Wei Yih, Leila M. Blackman, and Adrienne R. Hardham. "Characterisation of Stramenopile-specific mastigoneme proteins in Phytophthora parasitica." Protoplasma 256, no. 2 (2018): 521–35. http://dx.doi.org/10.1007/s00709-018-1314-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Allagui, MB, JT Marquina, and A. Mlaiki. "Phytophthora nicotianae var parasitica pathogène du piment en Tunisie." Agronomie 15, no. 3-4 (1995): 171–79. http://dx.doi.org/10.1051/agro:19950302.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Davis, R. M. "Effectiveness of Fosetyl-Al Against Phytophthora parasitica on Tomato." Plant Disease 73, no. 3 (1989): 215. http://dx.doi.org/10.1094/pd-73-0215.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Zeng, Youlin, та Fanzuo Kong. "Synthesis of β-d-glucose oligosaccharides from Phytophthora parasitica". Carbohydrate Research 338, № 22 (2003): 2359–66. http://dx.doi.org/10.1016/j.carres.2003.08.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Snapp, Sieglinde, and Carol Shennan. "TOMATO FRUIT QUALITY AND ION STATUS: THE EFFECTS OF SALINITY, PHYTOPHTHORA ROOT ROT AND GENOTYPE." HortScience 25, no. 9 (1990): 1149b—1149. http://dx.doi.org/10.21273/hortsci.25.9.1149b.

Full text

Abstract:

Tomato Fruit quality can be improved by the use of moderately saline irrigation water. However, decreased fruit yields may occur if the saline treatment is initiated early in plant development or the salt concentration is high. Another concern with the use of saline irrigation water is increased plant susceptibility to disease. Two processing tomato cultivars were grown under low salt (ECa=1.1 ds/m), medium salt (ECa=2.8 ds/m) and high salt (ECa=4.6 ds/m) regimes, and in the presence and absence of Phytophthora parasitica, the casual agent of Phytophthora root rot. Salinity increased Phytophth

APA, Harvard, Vancouver, ISO, and other styles

39

Ma, Wenbo, Yuanchao Wang, and John McDowell. "Focus on Effector-Triggered Susceptibility." Molecular Plant-Microbe Interactions® 31, no. 1 (2018): 5. http://dx.doi.org/10.1094/mpmi-11-17-0275-le.

Full text

Abstract:

Effector biology exhibits diversity at every level. Effector proteins play key roles in the molecular interplay between plants and plant-associated organisms, and effector biology remains one of the most active areas in the research field of molecular plant-microbe interactions. Using effectors as probes, much has been learned about pathogen virulence and host immunity, which has broad implications in developing disease-resistant crops that are essential for global food security. Thus, the MPMI Editorial Board is publishing this Focus Issue to showcase recent progress in this area. Additional

APA, Harvard, Vancouver, ISO, and other styles

40

Siviero, Amauri, Francineide A. Santos, Mariângela Cristofani, Edson L. Furtado, and Marcos A. Machado. "Avaliação in vitro de genótipos de citros a Phytophthora parasitica." Fitopatologia Brasileira 29, no. 3 (2004): 300–302. http://dx.doi.org/10.1590/s0100-41582004000300010.

Full text

Abstract:

Este trabalho teve como objetivo avaliar in vitro a reação de porta-enxertos de citros (Citrus spp.) a Phytophthora parasitica. As plântulas foram cultivadas em meio MS por 40 dias sendo, submetidas a fotoperíodo de 18 h, à temperatura de 25 ºC. A inoculação foi realizada através da inserção de agulha infestada com micélio de P. parasitica. A avaliação foi realizada aos 15 dias após a inoculação, medindo-se o comprimento das lesões em centímetros. O delineamento experimental foi inteiramente casualizado, com 15 repetições. Os resultados estão de acordo com as reações de campo dos genótipos e p

APA, Harvard, Vancouver, ISO, and other styles

41

Matheron, M. E., and M. Porchas. "Impact of Azoxystrobin, Dimethomorph, Fluazinam, Fosetyl-Al, and Metalaxyl on Growth, Sporulation, and Zoospore Cyst Germination of Three Phytophthora spp." Plant Disease 84, no. 4 (2000): 454–58. http://dx.doi.org/10.1094/pdis.2000.84.4.454.

Full text

Abstract:

In vitro activity of azoxystrobin, dimethomorph, and fluazinam on growth, sporulation, and zoospore cyst germination of Phytophthora capsici, P. citrophthora, and P. parasitica was compared to that of fosetyl-Al and metalaxyl. The 50% effective concentration (EC50) values for)inhibition of mycelial growth of the three pathogens usually were lowest for dimethomorph and (metalaxyl, ranging from <0.1 to 0.38 μg/ml. However, the 90% effective concentration (EC90) levels for dimethomorph always were lower than the other four tested compounds, with values ranging from 0.32 to 1.6 μg/ml. Mycelial

APA, Harvard, Vancouver, ISO, and other styles

42

Dandurand, L. M., and J. A. Menge. "Influence of Fusarium solani on citrus root rot caused by Phytophthora parasitica and Phytophthora citrophthora." Plant and Soil 144, no. 1 (1992): 13–21. http://dx.doi.org/10.1007/bf00018840.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Matheron, M. E., G. C. Wright, and M. Porchas. "Resistance to Phytophthora citrophthora and P. parasitica and Nursery Characteristics of Several Citrus Rootstocks." Plant Disease 82, no. 11 (1998): 1217–25. http://dx.doi.org/10.1094/pdis.1998.82.11.1217.

Full text

Abstract:

Studies were conducted to compare existing and potential citrus rootstocks with respect to resistance to root rot and gummosis caused by Phytophthora citrophthora and P. parasitica in greenhouse and growth chamber experiments and horticultural performance under simulated nursery conditions. Depending upon rootstock and experiment, mean root weights resulting from inoculation with P. citrophthora were 27 to 96% lower than the comparable controls. In similar experiments with the same rootstocks, inoculation with P. parasitica resulted in root weights that were 38 to 95% less than weights of the

APA, Harvard, Vancouver, ISO, and other styles

44

Peng, Ke-Chun, Chao-Wen Wang, Chih-Hang Wu, Chun-Tzu Huang, and Ruey-Fen Liou. "Tomato SOBIR1/EVR Homologs Are Involved in Elicitin Perception and Plant Defense Against the Oomycete Pathogen Phytophthora parasitica." Molecular Plant-Microbe Interactions® 28, no. 8 (2015): 913–26. http://dx.doi.org/10.1094/mpmi-12-14-0405-r.

Full text

Abstract:

During host-pathogen interactions, pattern recognition receptors form complexes with proteins, such as receptor-like kinases, to elicit pathogen-associated molecular pattern-triggered immunity (PTI), an evolutionarily conserved plant defense program. However, little is known about the components of the receptor complex, as are the molecular events leading to PTI induced by the oomycete Phytophthora pathogen. Here, we demonstrate that tomato (Solanum lycopersicum) SlSOBIR1 and SlSOBIR1-like genes are involved in defense responses to Phytophthora parasitica. Silencing of SlSOBIR1 and SlSOBIR1-li

APA, Harvard, Vancouver, ISO, and other styles

45

Hagan, A. K., J. R. Akridge, and M. E. Rivas-Davila. "Impact of Application Rate, Treatment Interval, and Placement on the Control of Phytophthora Shoot Blight on Annual Vinca with Azoxystrobin." Journal of Environmental Horticulture 19, no. 3 (2001): 163–65. http://dx.doi.org/10.24266/0738-2898-19.3.163.

Full text

Abstract:

Abstract Drenches and directed sprays of two rates of azoxystrobin (Heritage 50W) were evaluated at 2- and 4-week intervals for the preventative control of Phytophthora shoot blight (Phytophthora parasitica) in a simulated landscape planting of annual vinca (Catharanthus roseus). ‘Tropicana Rose’ and ‘Pacifica Punch’ annual vinca were planted in May 1998 and April 1999, respectively, adjacent to beds known to be heavily infested with the causal fungus P. parasitica. Regardless of application rate and fungicide placement, the survival rate of plants was often higher when treated with azoxystrob

APA, Harvard, Vancouver, ISO, and other styles

46

MAY-DE MIO, LOUISE L., RAQUEL GHINI, and HIROSHI KIMATI. "Solarização para controle de Phytophthora parasitica em mudas de citros." Fitopatologia Brasileira 27, no. 3 (2002): 254–58. http://dx.doi.org/10.1590/s0100-41582002000300003.

Full text

Abstract:

O uso de solarização tem-se mostrado eficiente para o controle de fitopatógenos habitantes do solo. No caso de Phytophthora parasitica, agente causal de podridão de raízes em viveiros de citros (Citrus spp.), utiliza-se, normalmente, desinfestação com brometo de metila, produto altamente tóxico ao homem e à comunidade microbiana do solo. Neste trabalho, verificou-se a eficiência da solarização em substrato pré-colonizado com P. parasitica por meio de dois métodos: sacos plásticos e coletor solar. Os experimentos foram realizados no inverno e no verão. No inverno, o delineamento foi em blocos a

APA, Harvard, Vancouver, ISO, and other styles

47

Derevnina, Lida, Benjamin Petre, Ronny Kellner, et al. "Emerging oomycete threats to plants and animals." Philosophical Transactions of the Royal Society B: Biological Sciences 371, no. 1709 (2016): 20150459. http://dx.doi.org/10.1098/rstb.2015.0459.

Full text

Abstract:

Oomycetes, or water moulds, are fungal-like organisms phylogenetically related to algae. They cause devastating diseases in both plants and animals. Here, we describe seven oomycete species that are emerging or re-emerging threats to agriculture, horticulture, aquaculture and natural ecosystems. They include the plant pathogens Phytophthora infestans , Phytophthora palmivora , Phytophthora ramorum , Plasmopara obducens , and the animal pathogens Aphanomyces invadans , Saprolegnia parasitica and Halioticida noduliformans . For each species, we describe its pathology, importance and impact, disc

APA, Harvard, Vancouver, ISO, and other styles

48

Vernenghi, Annie, J. Einhorn, G. Kunesch, C. Malosse, Florence Ramiandrasoa, and A. Ravisé. "Phytoalexines et réactions de défense de la tomate aux infections par Phytophthora parasitica et Verticillium albo-atrum." Canadian Journal of Botany 64, no. 5 (1986): 973–82. http://dx.doi.org/10.1139/b86-131.

Full text

Abstract:

Two cultivars of tomato of Saint-Pierre phénotype, isogenic for the resistance against verticilliosis and different for the resistance against mildew (and against Phytophthora parasitica Dast.), were inoculated with P. parasitica and with Verticillium albo-atrum Reinke et Berth. Associated with the defence reactions, an accumulation of sesquiterpenes phenolic compounds, tomatin, and oxygenated compounds of methyl linoleate took place in the tissues. Synthesis of these compounds in the host varies with the cultivars and the parasites in presence. In vitro studies on the inhibition of P. parasit

APA, Harvard, Vancouver, ISO, and other styles

49

Lutz, Amy, and John Menge. "Breaking Winter Dormancy of Phytophthora parasitica Propagules Using Heat Shock." Mycologia 78, no. 1 (1986): 148. http://dx.doi.org/10.2307/3793395.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Fischer, Ivan H., Marise C. Martins, Silvia A. Lourenço, and Fabiana M. de Abreu. "Ocorrência de Phytophthora parasitica em lírio da paz no Brasil." Fitopatologia Brasileira 29, no. 6 (2004): 690. http://dx.doi.org/10.1590/s0100-41582004000600019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!