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Academic literature on the topic 'Bacteria mycorrhiza'

Author: Grafiati

Published: 24 April 2022

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Journal articles on the topic "Bacteria mycorrhiza"

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Miyauchi, Marina Yumi Horta, Dáfila Santos Lima, Marco Antonio Nogueira, Gisele Milani Lovato, Letícia Sayuri Murate, Márcio Ferreira Cruz, Josué Maldonado Ferreira, Waldemar Zangaro, and Galdino Andrade. "Interactions between diazotrophic bacteria and mycorrhizal fungus in maize genotypes." Scientia Agricola 65, no. 5 (2008): 525–31. http://dx.doi.org/10.1590/s0103-90162008000500012.

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Some diazotrophic bacteria can fix nitrogen biologically in gramineous host plants. Generally, gramineous plants are also associated with mycorrhizal fungi, that can improve mainly plant P uptake. Among the factors affecting plant-microbe interactions, the plant genotype plays an important role. This study evaluates the effect of diazotrophic bacteria and an arbuscular mycorrhizal fungus (AMF), on five genotypes of maize (Zea mays L.), in relation to plant biomass, shoot N and P concentrations, and fine root morphological traits. The experimental design was entirely randomized in a factorial 5 × 4 × 2 arrangement, i.e., five maize genotypes (hybrids C333B, AS3466, and PREMIUM, and the inbreed lines lg40897-1 and lg40505-1), three diazotrophic bacteria (Azospirillum lipoferum, A. amazonense, and Burkholderia sp.) in addition to a control without bacterial inoculation, co-inoculated or not with the AMF Glomus clarum. The non-mycorrhizal plants inoculated with Azospirillum exhibited the highest N concentrations. The lines lg40897-1 and lg40505-1 showed higher P concentrations as compared to the hybrids, mainly when colonized by AMF. The higher levels of mycorrhizal colonization (90%) occurred in the C333B and lg40897-1 genotypes, which also exhibited a greater root diameter. Mycorrhiza increased shoot and root biomass, besides root traits as total length, specific length, total surface, and incidence of root hairs in all genotypes. In addition, mycorrhiza also stimulated the root colonization by diazotrophic bacteria. The bacteria did not affect root morphological traits and mycorrhizal colonization.

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Pertiwi, Hutami Indah, Sri Wilarso Budi R., and Arum Sekar Wulandari. "PENGARUH FUNGI MIKORIZA ARBUSKULA (FMA) DAN MYCORRHIZAL HELPER BACTERIA (MHB) TERHADAP PERTUMBUHAN JABON (Anthocepalus cadamba Roxb.) The Effect of Arbuscula Mycorrhizal Fungi (AMF) and Mycorrhizal Helper Bacteria (MHB) on Growth of Jabon." Journal of Tropical Silviculture 8, no. 3 (March 19, 2018): 147–53. http://dx.doi.org/10.29244/j-siltrop.8.3.147-153.

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Jabon (Anthocepalus cadamba Roxb.) is one of the fast-growing species that naturally spread in some areas of Indonesia. Known as well adapted to some types of soil, and attributes to a quite high of economical prospects value. Interaction of Arbuscular Mycorrhiza Fungi (AMF) symbiotic involve not only between fungi and plant’s root but also involving supporting organisms (bacteria). This bacteria capable to stimulating the development of mycorrhizal hyphae namely as Mycorrhiza Helper Bacteria (MHB). The aims of this research was to discover of bacterial isolates that can stimulate the development of AMF in Jabon seedling and to examine the effectiveness of MHB isolate and AMF toward Jabon growth. The experiment was conducted in Completely Randomized-split splot design with two factors. The main plot was AMF with two levels; without AMF (M0) and with AMF respectively. Bacteria as the sub-plot with 19 levels consist of the control (B0), Isolate of Glomus sp with coding B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12, B13, B14, B15, B16, B17, and B18 respectively. Our experiment result showed that AMF inoculated of Jabon seedling had significantly effect on root colonization and root dry weight. The average of root colonization was 20.2%. Root dry weight increased 4.69% compared to control. Bacteria were suspected as MHB has not provided significant resultsKey words: arbuscular mycorrhizal fungi, jabon, mycorrhizal helper bacteria

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Frey-Klett, P., J. Garbaye, and M. Tarkka. "The mycorrhiza helper bacteria revisited." New Phytologist 176, no. 1 (October 2007): 22–36. http://dx.doi.org/10.1111/j.1469-8137.2007.02191.x.

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Dahm, Hanna, Edward Strzelczyk, Agnieszka Ciesielska, and Katarzyna Redlak. "The effect of ectomycorrhizal fungi and bacteria on pine seedlings." Acta Mycologica 33, no. 1 (August 20, 2014): 25–36. http://dx.doi.org/10.5586/am.1998.002.

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The effect of ecomycorrhizal fungi (<i>Hebelon crustuliniforme</i>(Bull.: Fr.) Quél. 5392 and <i> Pisolithus tinctorius</i> (Pers.) Coker et Couch 5335) and bacteria (<i>Bacillus polymyxa</i> and <i>Azospirillum brasilense</i>). associated with mycorrhizas on the growth of pine seedligs was investigated. In addition the influence of bacteria on fungal biomass production and the relationship between ectomycorrhizal fungi and fungi pathogenic to root of pine seedlings were determined. In general, the shoot/root ratio was higher in plants inoculated with <i>Hebeloma crustuliniforme</i> and bacteria than in the control seedlings (grown only under sterile conditions). In non-sterile substrate the root/shoot ratio of the mycorrhizal seedlings was lower as compared to the control. Similar phenomenon was noted in plants inoculated with the mycorrhizal fungus <i>Pisolithus tinetorius</i>. The bacteria used as well as the time of introduction of these organisms into the cultures of mycorrhiza fungi affected the production of fungal biomass. <i>Hebeloma crustuliniforme</i> and <i>Pisolithus tinctorius</i> inhibited the growth of <i>Rizoctonia solani</i> and <i>Fusarium oxysporum</i> fungi pathogenic to pine seedlings.

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Malygin*, Daniil Mikhailovich, Marina Nikolaevna Mandryk-Litvinkovich, and Sofia Valeryevna Sokornova. "Does arbuscular mycorrhiza favor invasion of some Asteraceae tribes?" PLANT PROTECTION NEWS 104, no. 3 (October 14, 2021): 144–52. http://dx.doi.org/10.31993/2308-6459-2021-104-3-14993.

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Invasive species, including more than three dozen Asteraceae, such as Solidago canadensis, Leucanthemum vulgare, Senecio inaequidens etc, pose serious threat to ecosystem health. Arbuscular mycorrhizal symbiosis is a key factor for distribution of invasive species of some Asteraceae tribes, including Astereae, Anthemideae, Senecioneae, Gnaphalieae, Cardueae, and Cichorieae. The formation of invasion-friendly plant communities has occurred through increasing nutrient and water availability, hormonal regulation, production of bioactive compounds, and mycorrhiza-induced resistance of host plants. Native species are displaced through the influence on soil microbiota, mycorrhizal and nutrient status of neighboring plants, and several other parameters. Allelopathic influences and symbiotic interactions with bacteria and other fungi can inhibit these processes. Understanding the mycorrhizal status of invasive weeds, in our opinion, is a necessary condition for their successful control.

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Kumar, Anil, Donna R. Cousins, Cheng-Wu Liu, Ping Xu, and Jeremy D. Murray. "Nodule Inception Is Not Required for Arbuscular Mycorrhizal Colonization of Medicago truncatula." Plants 9, no. 1 (January 6, 2020): 71. http://dx.doi.org/10.3390/plants9010071.

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Most legumes can engage in symbiosis with N-fixing bacteria called rhizobia. This symbiosis, called nodulation, evolved from the more widespread symbiosis that most land plants form with arbuscular mycorrhiza, which is reflected in a common requirement of certain genes for both these symbioses. One key nodulation gene, Nodule Inception (NIN), has been intensively studied. Mutants in NIN are unable to form nodules, which has made it difficult to identify downstream genes under the control of NIN. The analysis of data from our recent transcriptomics study revealed that some genes with an altered expression of nin during nodulation are upregulated in mycorrhizal roots. In addition, another study reported the decreased colonization of nin roots by arbuscular mycorrhiza. We therefore investigated a role for NIN in mycorrhiza formation. Our time course study, using two nin alleles with differing genetic backgrounds, suggests that that loss of NIN does not affect colonization of Medicago truncatula roots, either in the presence or absence of rhizobia. This, and recent phylogenetic analyses showing that the loss of NIN is correlated with loss of nodulation in the FaFaCuRo clade, but not with the ability to form mycorrhiza, argue against NIN being required for arbuscular mycorrhization in legumes.

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Pivato, Barbara, Pierre Offre, Sara Marchelli, Bruno Barbonaglia, Christophe Mougel, Philippe Lemanceau, and Graziella Berta. "Bacterial effects on arbuscular mycorrhizal fungi and mycorrhiza development as influenced by the bacteria, fungi, and host plant." Mycorrhiza 19, no. 2 (October 22, 2008): 81–90. http://dx.doi.org/10.1007/s00572-008-0205-2.

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Pachlewski, Roman, Edmund Strzelczyk, and Jadwiga Kermen. "Studies of Cantharellus cibarius - a mycorrhizal fungus of pine and spruce." Acta Mycologica 31, no. 2 (August 20, 2014): 143–50. http://dx.doi.org/10.5586/am.1996.013.

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Pure cultures of <i>Cuntharellus cibarius</i> wcrc isolaled in two forms: <i>C. cibarius</i> hardwood form (isolate No. 5400) and <i>C. cibarius</i> coniferous form (isolate No.5410). Artificial mycorrhization of pine (<i>Pinus Sylvestris</i>) and spruce (<i>Picea abies</i>) was applied in this work and wcre determinated mycorrhiza-forming properties in both isolates with differences in mycorrhiza-forming activity and in morphogenesis of ectomycorrhizas. The sporocarps of <i>C. cibarius</i> consistently contained bacteria probably belonging to the genus: <i>Pseudomonas</i>. It was possible to evaluate the culture conditions for associated bacteria using <i>in vitro</i> tests (effect of antibiotics, pH of the medium), as well as their neutral interactions with mycorrhizal fungi (<i>C.antharellus cibarius, Pisolithus tinctorius, Suillus bovinus</i> and <i>Mycelium radicis atrrovirens</i>). Results of the present work suggest that the selection of isolates of <i>C. cibarius< for artificial mycorrhization of seedlings of forest trees m nurseries could be very useful.

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ZAFARI, Mahnaz, Ali EBADI, and Sodabeh JAHANBAKHSH GODEHKAHRIZ. "Effect of Seed Inoculation on Alfalfa Tolerance to Water Deficit Stress." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 45, no. 1 (June 10, 2017): 82–88. http://dx.doi.org/10.15835/nbha45110424.

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Water deficit is one of the most important environmental stresses that adversely affect crop growth and production and mycorrhizal fungi and symbiotic bacteria have important role in resistance to drought stress. The effect of biofertilizers on alfalfa stress tolerance was studied at the greenhouse condition. Treatments comprised three water-deficit stresses (35%, 55% and 75% of field capacity) and four seeds inoculations (Glomus mosseae, Sinorhizobium meliloti, G. mosseae + S. meliloti and non-inoculated). Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%), quantum yield (50.64%) and forage yield (28.20%), while increased the proline and soluble sugars content (68.55 and 46.53% respectively) and osmotic potential (45.84%). The inoculation of seeds increased the capability of the plants in counteracting the stress, so that the production of compatible solutes was increased and the photosynthetic indices, proline, osmotic potential, membrane stability and forage yield were improved by seed inoculation. Mycorrhiza improved photosynthetic indexes and proline, but bacteria had more efficacy on membrane stability and forage yield. However, double inoculation due to the synergistic effect of mycorrhiza and Sinorhizobium, had the greatest effect than Solitary inoculation. Our results suggest that biofertilized alfalfa plants were better adapted than non- biofertilized ones to cope with water deficit.

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Panneerselvam, P., and B. Saritha. "Influence of AM fungi and its associated bacteria on growth promotion and nutrient acquisition in grafted sapota seedling production." Journal of Applied and Natural Science 9, no. 1 (March 1, 2017): 621–25. http://dx.doi.org/10.31018/jans.v9i1.1241.

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A study was undertaken to know the effect of co-inoculation of Arbuscular Mycorrhizal (AM) fungi and its associated bacteria on enhancing AM root colonization, growth promotion and nutrient acquisition in grafted sapota plants. The best mycorrhiza associated bacteria i.e. Pseudomonas putida (HM590707) isolated from Funneliformis mosseae spore was evaluated along with AM fungi for growth promotion and AM fungal colonization in grafted sapota plants. The combined application of P. putida along with AM fungi significantly increased plant height (39.67 %), stem girth (3.2 cm), total biomass (66.8 g plant-1), AM root colonization (73.4 %)and plant nutrient concentrations viz., N (2.52 %), P (0.18 %), K (2.90 %), Fe (428.4 ppm) and Zn (21.40 ppm) as compared to uninoculated control. This finding clearly demonstrated that grafted sapota plants can be successfully established by combined inoculation of AM fungi and its associated bacteria which have a greater impact on healthy grafted plants.

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Dissertations / Theses on the topic "Bacteria mycorrhiza"

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Keeble, Alison. "Interaction between mycorrhiza, rhizosphere bacteria and take-all on wheat." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342050.

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Kataoka, Ryota. "The interaction between ectomycorrhizal fungi and mycorrhiza helper bacteria in the mycorrhizosphere of Pinus thunbergii." Kyoto University, 2008. http://hdl.handle.net/2433/123958.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第14058号
農博第1728号
新制||農||961(附属図書館)
学位論文||H20||N4396(農学部図書室)
UT51-2008-F450
京都大学大学院農学研究科地域環境科学専攻
(主査)教授二井一禎, 教授武田博清, 教授縄田栄治
学位規則第4条第1項該当

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Pivato, Barbara. "Ecology of arbuscular mycorrhizas : interactions plant - fungal genotypes and mycorrhizas - bacteria." Dijon, 2008. http://www.theses.fr/2008DIJOS006.

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La première étape de la thèse a consisté à comparer la diversité et la structure génétique des populations de champignons mycorhiziens à arbuscules (MA) associées à quatre espèces de médiques annuelles. Les résultats obtenus montrent que l’abondance des champignons MA différait, indiquant que la structure génétique de la communauté fongique a été influencée par l’espèce végétale. La deuxième étape de ce travail visait à tester l’hypothèse selon laquelle la longue histoire évolutive entre champignons MA et plantes ne se serait pas faite de façon indépendante des bactéries. La structure génétique des populations bactériennes associées aux racines mycorhizées et non de M. Truncatula a été comparée. Les communautés bactériennes différaient de façon significative, ces différences étant expliquées par des marqueurs moléculaires associés aux familles des Oxalobacteraceae et Comamonadaceae. Six isolats représentatifs des populations associées aux racines mycorhizées et deux souches de référence (Collimonas fungivorans Ter331 et Pseudomonas fluorescens C7R12) ont été testées afin de déterminer leur effet sur la mycorhization. Une souche appartenant aux Oxalobacteraceae (Collimonas sp. J5B4) et P. Fluorescens C7R12 ont amélioré la croissance du champignon AM et sa colonisation racinaire, confirmant partiellement l’hypothèse que les bactéries associées aux racines mycorhizées auraient un effet favorable sur la mycorhization. Enfin, la caractérisation de l’effet promoteur de P. Fluorescens C7R12 sur la mycorhization a montré que cet effet était spécifique du champignon MA et que la colonisation des cellules bactériennes différait sur les racines mycorhizées et non-mycorhizées
In the first part of the thesis, possible effect of the plant genotype on the genetic diversity and structure of the arbuscular mycorrhizal (AM) fungal community was assessed. Results indicated a similar diversity of AM fungi in the four Medicago species used. However, the abundance of AM fungi differed significantly upon the plant species, indicating preferential associations between AM fungal and plant genotypes. The second part of the thesis was based on the hypothesis that the long joint evolution of AM fungi and plants did not occur independently of the associated bacteria. To test this hypothesis, the genetic structure of bacterial communities associated with mycorrhizal and non mycorrhizal roots of M. Truncatula was compared. The bacterial communities differed significantly between mycorrhizal and non mycorrhizal roots, these differences being explained by sequences belonging to Oxalobacteraceae and Comamonadaceae families. Six bacterial isolates representative of the populations belonging to Oxalobacteraceae and Comamonadaceae were tested together with two reference strains (Collimonas fungivorans Ter331 and Pseudomonas fluorescens C7R12) for their effect on mycorrhization. One strain belonging to Oxalobacteraceae (Collimonas sp. J5B4) and P. Fluorescens C7R12 promoted both AM fungal growth and mycorrhization, partially confirming our hypothesis that bacteria preferentially associated with mycorrhizal roots would be beneficial to the symbiosis. Finally, the characterization of the promoting effect of P. Fluorescens C7R12 showed that it was fungal specific and that the pattern of colonization of bacterial cells on mycorrhizal and non mycorrhizal roots differed

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Toljander, Jonas. "Interactions between soil bacteria and arbuscular mycorrhizal fungi /." Uppsala : Department of Forest Mycology and Pathology, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200639.pdf.

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Poole, Elizabeth Jennifer. "Evaluation and localization of helper bacteria in ectomycorrhiza formation." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322938.

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Ridsdale, Carmen Jane. "Interactions of arbuscular mycorrhizal fungi and spore-associated bacteria." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1018269.

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Arbuscular mycorrhizal (AM) fungi are naturally occurring in roots of terrestrial plants. AM fungi are capable of benefiting the host plant through various mechanisms such as enhanced nutrient supply, alleviation of environmental stress and inhibition of plant fungal pathogens. AM fungal spore-associated bacteria have been previously isolated and shown to have plant growthpromoting (PGP) abilities by several authors. Some bacterial isolates are able to promote AM fungal colonisation of host plants and are known to be mycorrhizal helper bacteria (MHB). This study focused on the isolation of AM fungal spore-associated bacteria, characterization of the isolates according to plant growth promoting abilities and evaluation of their potential to enhance plant growth and mycorrhizal colonisation. AM fungi were extracted from soils sampled from natural indigenous forest sources, raspberry (Rubus idaeus cv. Heritage) and strawberry (Fragaria ananassa) farms in South Africa and from a raspberry (Rubus idaeus cv. Autumn Bliss) plantation in Argentina. A total of 52 sporeassociated bacteria were isolated from the external and internal surfaces of AM fungal spore morphotypes from the two countries. The bacterial isolates were evaluated for their PGP abilities such as phosphate solubilisation, indole-3-acetic acid production, ammonia production and inhibition of the fungal pathogens Fusarium oxysporum and Phythophthora nicotianae through mechanisms such as siderophore and/ or hydrolytic enzyme production. A total of 23 bacterial isolates from both South Africa and Argentina showing the most potential to be PGP, were identified molecularly as belonging to the genera Acinetobacter, Alcaligenes, Bacillus, Microbacterium, Micrococcus, Serratia and Staphylococcus. The ability of ten selected bacterial isolates showing multiple PGP capacity were evaluated for their plant growth promotion and mycorrhizal colonisation enhancement ability on raspberry (Rubus idaeus cv. Meeker). Significant differences in increased shoot and root dry weights were shown by the treatments compared to the uninoculated control. The highest increase in shoot and root dry weights were shown by South African (Bacillus mycoides) and Argentinean (Alcaligenes faecalis) isolates. AM fungal colonisation was significantly enhanced by the South African (Bacillus mycoides) and Argentinean (Micrococcus luteus) isolates compared to the AM fungal singly inoculated control.

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Bharadwaj, Dharam Parkash. "The plant - arbuscular mycorrhizal fungi - bacteria - pathogen system : multifunctional role of AMF spore-associated bacteria /." Uppsala : Dept, of Forest Mycology and Pathology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200790.pdf.

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Artursson, Veronica. "Bacterial-fungal interactions highlighted using microbiomics : potential application for plant growth enhancement /." Uppsala : Dept. of Microbiology, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/2005127.pdf.

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Sitole, Phumeza. "Investigating the role of mycorrhizal fungi and associated bacteria in promoting growth of citrus seedlings." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1013033.

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South Africa is the world's second largest exporter of fresh citrus and is ranked 14th in citrus production. Fungal pathogens such as Phytophthora and Pythium cause economic losses as a result of root rot and brown rot. Mycorrhizal fungi are specialized members of the fungal community forming a mutualistic relationship with plant roots. Mycorrhizal fungal structures are known to associate with other soil microorganisms and these may contribute to improved plant growth. A diverse group of bacteria that interact with the mycorrhizal fungi are known as Mycorrhizal Helper Bacteria (MHB). The aim of this study was to investigate the role of arbuscular mycorrhiza and associated bacteria isolated from spores and determine whether they had any plant growth promoting potential. A total of 19 bacteria were isolated from arbuscular mycorrhizal spores and were molecularly identified as belonging to several Bacillus, Micrococcus, Onchrobactrum and Staphylococcus sp. All bacterial isolates were tested for plant growth promotion abilities. One Bacillus isolate was able to solubilise phosphate. Four isolates Micrococcus sp, Micrococcus leteus, Ochrobacterum sp and Ochrobacterum antropi were able to produce Indole Acetic Acid and three isolates showed potential to reduce growth of Phytophthora nicotianae, P. citrocola and P. citrophthora in in vitro plate cultures. Further tests using culture supernatants of the Bacillus sp, Micrococcus sp and Bacillus cereus confirmed their ability to inhibit or reduce growth of the three Phytophthora species in a 96 well bioassay. Bacillus sp and Bacillus cereus were able to inhibit Phytophthora spp by 95 to 100 % and Micrococcus spp was able to decrease pathogen growth by 60 to 94 %. These bacterial isolates were further evaluated for plant growth promoting abilities on citrus rough lemon seedlings alone or in combination with arbuscular mycorrhizal inoculum. Bacterial and mycorrhizal inoculants influence the increase in shoot and root biomass. Bacillus cereus in combination with mycorrhizal inoculum significantly increased seedling shoot to root ratio while root biomass was significantly increased with mycorrhizal inoculation. Due to the short duration of the trial mycorrhizal colonisation could not be assessed. It is evident that selected combinations of bacteria and mycorrhizal fungi could promote citrus seedling growth and potentially improve seedling health. Further studies under nursery conditions are recommended.

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Levy, Avram. "Modelling rhizosphere interactions of Burkholderia species." University of Western Australia. School of Biomedical and Chemical Sciences, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0123.

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[Truncated abstract] Genus Burkholderia encompasses a diverse collection of bacteria that inhabit rhizospheres throughout the world. Species can provide beneficial returns for eukaryotes, such as nitrogen fixation and nodule formation in plants and biocontrol of cropping systems. Burkholderia members can also cause disease in various animals, fungi and plants. These seemingly conflicting characteristics point to the capacity of Burkholderia spp. to interact with diverse eukaryotes. Within terrestrial ecosystems, Burkholderia spp. must negotiate favourable outcomes with both the primary producers and the primary decomposers, namely plants and fungi. It is these ongoing negotiations which govern many rhizosphere processes and lead to niche differentiation for Burkholderia spp. This research set out to design an in vitro model for investigating Burkholderiaeukaryote interactions. Surface and cellular interactions between Burkholderia spp. and both plants and fungi were then investigated. Specifically, mechanisms of adherence and invasion of plant and fungal cells were studied. The Burkholderia spp. B. vietnamiensis and B. pseudomallei were applied to mycorrhizal fungus spores as well as to several plant species. Bacterial inoculation had varying effects on germination of plant and fungal dormant forms. B. vietnamiensis-inoculation consistently increased Gigaspora decipiens spore germination, while B. pseudomallei produced no significant change. The effect of B. vietnamiensis on Acacia colei seed germination was density dependant, resulting in either increases or decreases in seed germination rates. ... Detection of B. pseudomallei in surface waters and soils was improved by the use of a rapid on-site molecular method. The related species B. thailandensis and B. ubonensis were also cultured from northern Western Australia. Mycorrhizal spores were isolated from soils of melioidosis-endemic regions. Burkholderia spp., including B. pseudomallei and B. vietnamiensis were detected in extracts of these mycorrhizal spores. Therefore, associations of Burkholderia spp. with mycorrhizal spores extend beyond the in vitro setting. These studies have increased our understanding of several specific interactions between Burkholderia spp. and eukaryotes of the rhizosphere. Common themes in adherence and invasion have emerged. Burkholderia spp. are able to closely associate with eukaryotes and to gain access to protected niches. Such access helps to explain the persistence of these bacteria in the environment during periods of desiccation and nutrient limitation.

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Books on the topic "Bacteria mycorrhiza"

1

Germida, J. J. Growth and nutrition of wheat as affected by interactions between VA mycorrhizae and plant growth-promoting rhizobacteria (PGPR): Final report. [Regina, Sask.]: Saskatchewan Agriculture and Food, 1995.

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Niu, Chih-hao. Association of nitrogen-fixing bacteria with ectomycorrhizae in Douglas-fir. 1987.

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Niu, Chih-hao. Association of nitrogen-fixing bacteria with ectomycorrhizae in Douglas-fir. 1987.

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S, Gnanamanickam S., ed. Plant-associated bacteria. Dordrecht: Springer, 2006.

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Kirchman, David L. Symbioses and microbes. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198789406.003.0014.

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The book ends with a chapter devoted to discussing interactions between microbes and higher plants and animals. Symbiosis is sometimes used to describe all interactions, even negative ones, between organisms in persistent, close contact. This chapter focuses on interactions that benefit both partners (mutualism), or one partner while being neutral to the other (commensalism). Microbes are essential to the health and ecology of vertebrates, including Homo sapiens. Microbial cells outnumber human cells on our bodies, aiding in digestion and warding off pathogens. In consortia similar to the anaerobic food chain of anoxic sediments, microbes are essential in the digestion of plant material by deer, cattle, and sheep. Different types of microbes form symbiotic relationships with insects and help to explain their huge success in the biosphere. Protozoa are crucial for wood-boring insects, symbiotic bacteria in the genus Buchnera provide sugars to host aphids while obtaining essential amino acids in exchange, and fungi thrive in subterranean gardens before being harvested for food by ants. Symbiotic dinoflagellates directly provide organic material to support coral growth in exchange for ammonium and other nutrients. Corals are now threatened worldwide by rising oceanic temperatures, decreasing pH, and other human-caused environmental changes. At hydrothermal vents in some deep oceans, sulfur-oxidizing bacteria fuel an entire ecosystem and endosymbiotic bacteria support the growth of giant tube worms. Higher plants also have many symbiotic relationships with bacteria and fungi. Symbiotic nitrogen-fixing bacteria in legumes and other plants fix more nitrogen than free-living bacteria. Fungi associated with plant roots (“mycorrhizal”) are even more common and potentially provide plants with phosphorus as well as nitrogen. Symbiotic microbes can provide other services to their hosts, such as producing bioluminescence, needed for camouflage against predators. In the case of the bobtail squid, bioluminescence is only turned on when populations of the symbiotic bacteria reach critical levels, determined by a quorum sensing mechanism.

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Book chapters on the topic "Bacteria mycorrhiza"

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Tarkka, Mika T., and Pascale Frey-Klett. "Mycorrhiza Helper Bacteria." In Mycorrhiza, 113–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-78826-3_6.

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Pinhey, Sally, and Margaret Tebbs. "The role of fungi." In Plants for soil regeneration: an illustrated guide, 23–27. Wallingford: CABI, 2022. http://dx.doi.org/10.1079/9781789243604.0005.

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Abstract This chapter focuses on the role of fungi. Fungi are a vital part of the mixture of microorganisms found in healthy soil. Fungal associations between plant roots and beneficial fungi are known as mycorrhizae (meaning 'fungus' and 'root'), and form a beneficial or symbiotic relationship with plants growing in the soil. Mycorrhizal fungi also facilitate plant interactions with other soil microbes. These include pathogens, and bacteria that produce vitamins and protect against attack. The most common of the mycorrhizae are divided into the following: (1) ectomycorrhizae; (2) endomycorrhizae; (3) arbuscular mycorrhizae; (4) ericoid mycorrhizae; and (5) orchid mycorrhiza. The role of saprophytes, pathogens and actinomycetes are also discussed.

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Deveau, Aurélie, and Jessy Labbé. "Mycorrhiza helper bacteria." In Molecular Mycorrhizal Symbiosis, 437–50. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118951446.ch24.

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Choudhary, Devendra K., Ajit Varma, and Narendra Tuteja. "Mycorrhizal Helper Bacteria: Sustainable Approach." In Mycorrhiza - Function, Diversity, State of the Art, 61–74. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53064-2_5.

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Glick, Bernard R. "Mycorrhizal–Plant Interactions." In Beneficial Plant-Bacterial Interactions, 301–17. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44368-9_9.

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Bianciotto, V., S. Perotto, J. M. Ruiz-Lozano, and P. Bonfante. "Arbuscular mycorrhizal fungi and soil bacteria: from cellular investigations to biotechnological perspectives." In Mycorrhizal Technology in Agriculture, 19–31. Basel: Birkhäuser Basel, 2002. http://dx.doi.org/10.1007/978-3-0348-8117-3_2.

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Minerdi, D., V. Bianciotto, and P. Bonfante. "Endosymbiotic bacteria in mycorrhizal fungi: from their morphology to genomic sequences." In Diversity and Integration in Mycorrhizas, 211–19. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-017-1284-2_20.

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Miransari, M. "Plant, Mycorrhizal Fungi, and Bacterial Network." In Plant signaling: Understanding the molecular crosstalk, 315–25. New Delhi: Springer India, 2013. http://dx.doi.org/10.1007/978-81-322-1542-4_18.

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Singh, Shipra, and Anil Prakash. "Tripartite Association Among Plant, Arbuscular Mycorrhizal Fungi and Bacteria." In Microorganisms in Sustainable Agriculture and Biotechnology, 243–59. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-2214-9_13.

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Scheublin, Tanja R. "Bacterial Colonization of the Arbuscular Mycorrhizal Fungal Hyphosphere." In Molecular Microbial Ecology of the Rhizosphere, 525–34. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118297674.ch49.

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Conference papers on the topic "Bacteria mycorrhiza"

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Asyiah, Iis Nur, Reginawanti Hindersah, and Rita Harni. "Cell viability of mycorrhiza helper bacteria solid inoculant in different carrier material." In THE 1ST INTERNATIONAL CONFERENCE AND EXHIBITION ON POWDER TECHNOLOGY INDONESIA (ICePTi) 2017. Author(s), 2018. http://dx.doi.org/10.1063/1.5021230.

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Zheleznyakov, S. V., V. K. Lebedeva, T. V. Kalinina, A. P. Kozhemyakov, and L. M. Jacobi. "Analysis of Pseudomonas fluorescens inoculation effect on the work of mycorrhiza formed on black medic by arbuscular fungi differing in symbiotic activity." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.288.

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The influence of rhizobacteria Pseudomonas fluorescens, as well as four species of fungi from the Glomeromycota phylum on the productivity of black medic in mono - and double (fungus + bacteria) inoculation was studied. A high dependence of the results on the symbiotic activity of mycosymbiont was established.

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Oja, Jane, Sakeenah Adenan, Abdel-Fattah Talaat, and Juha Alatalo. "Novel Approach to Study the Diversity of Soil Microbial Communities in Qatar." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0025.

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A broad diversity of microorganisms can be found in soil, where they are essential for nutrient cycling and energy transfer. Recent high-throughput sequencing methods have greatly advanced our knowledge about how soil, climate and vegetation variables structure the composition of microbial communities in many world regions. However, we are lacking information from several regions in the world, e.g. Middle-East. We have collected soil from 19 different habitat types for studying the diversity and composition of soil microbial communities (both fungi and bacteria) in Qatar and determining which edaphic parameters exert the strongest influences on these communities. Preliminary results indicate that in overall bacteria are more abundant in soil than fungi and few sites have notably higher abundance of these microbes. In addition, we have detected some soil patameters, which tend to have reduced the overall fungal abundance and enhanced the presence of arbuscular mycorrhizal fungi and N-fixing bacteria. More detailed information on the diversity and composition of soil microbial communities is expected from the high-throughput sequenced data.

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Reports on the topic "Bacteria mycorrhiza"

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Phillips, Donald, and Yoram Kapulnik. Using Flavonoids to Control in vitro Development of Vesicular Arbuscular Mycorrhizal Fungi. United States Department of Agriculture, January 1995. http://dx.doi.org/10.32747/1995.7613012.bard.

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Vesicular-arbuscular mycorrhizal (VAM) fungi and other beneficial rhizosphere microorganisms, such as Rhizobium bacteria, must locate and infect a host plant before either symbiont profits. Although benefits of the VAM association for increased phosphorous uptake have been widely documented, attempts to improve the fungus and to produce agronomically useful amounts of inoculum have failed due to a lack of in vitro production methods. This project was designed to extend our prior observation that the alfalfa flavonoid quercetin promoted spore germination and hyphal growth of VAM fungi in the absence of a host plant. On the Israeli side of the project, a detailed examination of changes in flavonoids and flavonoid-biosynthetic enzymes during the early stages of VAM development in alfalfa found that VAM fungi elicited and then suppressed transcription of a plant gene coding for chalcone isomerase, which normally is associated with pathogenic infections. US workers collaborated in the identification of flavonoid compounds that appeared during VAM development. On the US side, an in vitro system for testing the effects of plant compounds on fungal spore germination and hyphal growth was developed for use, and intensive analyses of natural products released from alfalfa seedlings grown in the presence and absence of microorganisms were conducted. Two betaines, trigonelline and stachydrine, were identified as being released from alfalfa seeds in much higher concentrations than flavonoids, and these compounds functioned as transcriptional signals to another alfalfa microsymbiont, Rhizobium meliloti. However, these betaines had no effect on VAM spore germination or hyphal growth i vitro. Experiments showed that symbiotic bacteria elicited exudation of the isoflavonoids medicarpin and coumestrol from legume roots, but neither compound promoted growth or germination of VAM fungi in vitro. Attempts to look directly in alfalfa rhizosphere soil for microbiologically active plant products measured a gradient of nod-gene-inducing activity in R. meliloti, but no novel compounds were identified for testing in the VAM fungal system in vitro. Israeli field experiments on agricultural applications of VAM were very successful and developed methods for using VAM to overcome stunting in peanuts and garlic grown in Israel. In addition, deleterious effects of soil solarization on growth of onion, carrot and wheat were linked to effects on VAM fungi. A collaborative combination of basic and applied approaches toward enhancing the agronomic benefits of VAM asociations produced new knowledge on symbiotic biology and successful methods for using VAM inocula under field conditions

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