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Registros recuperados: 4
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Development and activity of Glomus intraradices as affected by co-existence with Glomus claroideum in one root system Inra
Janoušková, M.; Seddas, P.; Mrnka, L.; Van Tuinen, D.; Dvořáčková, A.; Tollot, M.; Gianinazzi-Pearson, V.; Vosátka, M.; Gollotte, A..
The co-existence of two arbuscular mycorrhizal fungal (AMF) species, Glomus intraradices and Glomus claroideum, in the root systems of plants was investigated in a greenhouse experiment aimed at reconstructing interactions during an early stage of primary succession on a coal-mine spoil bank in Central Europe. Two plant species, Tripleurospermum inodorum and Calamagrostis epigejos, were inoculated either with one or both AMF species. Fungal development, determined by trypan blue and alkaline phosphatase staining as well as by PCR amplification of rRNA genes with species-specific primers, and the expression of five genes with different metabolic functions in the intraradical structures of G. intraradices were followed after 6 and 9 weeks of cultivation. The...
Tipo: Journal Article Palavras-chave: MYCORHIZES A ARBUSCULES; PHOSPHATASE ALCALINE; MYCELIUM INTRARADICAL ALKALINE PHOSPHATASE; ARBUSCULAR MYCORRHIZA; GENE EXPRESSION; INTRARADICAL MYCELIUM; NESTED PCR.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20119c7b67f7&uri=/notices/prodinra1/2011/05/
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Fungal lipochitooligosaccharide symbiotic signals in arbuscular mycorrhiza. Inra
Maillet, F.; POINSOT, V.; Andre, O.; PUECH-PAGES, V.; Haouy, A.; Gueunier, M.; CROMER, L.; Giraudet, D.; FORMEY, D.; Niebel, A.; MARTINEZ, E.A.; DRIGUEZ, H.; BECARD, G.; Denarié, J..
Arbuscular mycorrhiza (AM) is a root endosymbiosis between plants and glomeromycete fungi. It is the most widespread terrestrial plant symbiosis, improving plant uptake of water and mineral nutrients. Yet, despite its crucial role in land ecosystems, molecular mechanisms leading to its formation are just beginning to be unravelled. Recent evidence suggests that AM fungi produce diffusible symbiotic signals. Here we show that Glomus intraradices secretes symbiotic signals that are a mixture of sulphated and non-sulphated simple lipochitooligosaccharides (LCOs), which stimulate formation of AM in plant species of diverse families (Fabaceae, Asteraceae and Umbelliferae). In the legume Medicago truncatula these signals stimulate root growth and branching by...
Tipo: Journal Article Palavras-chave: AM; MEDICAGO TRUNCATULA; ARBUSCULAR MYCORRHIZA; SYMBIOSIS; SUSTAINABLE DEVELOPMENT; ENVIRONMENT CARBOHYDRATE SEQUENCE; CHOMATOGRAPHY HIGH PRESSURE LIQUID; DAUCUS; CAROTA CHEMISTRY METABOLISM MICROBIOLOGY; GLOMEROMYCOTA METABOLISM; LIPOPOLYSACCHARIDES CHEMISTRY METABOLISM; MEDICAGO TRUNCATULA CHEMISTRY GROWTH & DEVELOPMENT METABOLISM MICROBIOLOBY; MOLECULAR SEQUENCE DATA; MYCORRHIZAE METABOLISM; PLANT; EXTRACTS CHEMISTRY METABOLISM; PLANT ROOTS CHEMISTRY GROWTH & DEVELOPMENT METABOLISM MICROBIOLOGY; SIGNAL TRANSDUCTION; SPORES FUNGAL CHEMISTRY METABOLISM SYMBIOSIS.
Ano: 2011 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD201181dabef5&uri=/notices/prodinra1/2011/07/
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Plant-driven selection of microbes Inra
Hartmann, A.; Schmid, M.; Van Tuinen, D.; Berg, G..
The rhizodeposition of plants dramatically influence the surrounding soil and its microflora. Root exudates have pronounced selective and promoting effects on specific microbial populations which are able to respond with chemotaxis and fast growth responses, such that only a rather small subset of the whole soil microbial diversity is finally colonizing roots successfully. The exudates carbon compounds provide readily available nutrient and energy sources for heterotrophic organisms but also contribute e.g. complexing agents, such as carboxylates, phenols or siderophores for the mobilization and acquisition of rather insoluble minerals. Root exudation can also quite dramatically alter the pH- and redox-milieu in the rhizosphere. In addition, not only...
Tipo: Journal Article Palavras-chave: EXSUDATION RACINAIRE; RHIZODEPOSITION; DIVERITE MICROBIENNE; MYCORHIZES A ARBUSCULES; ANTIMICROBIEN ROOT EXUDATION; RHIZODEPOSITION; MICROBIAL DIVERSITY; RHIZOSPHERE BACTERIA; MYCORRHIZAL FUNGI; ARBUSCULAR MYCORRHIZA; ECTOMYCORRHIZA; ANTIMICROBIALS; SIGNALLING COMPOUNDS; PLANT GROWTH PROMOTION; BIOLOGICAL CONTROL; "BIASED RHIZOSPHERE CONCEPT".
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2011720427a9&uri=/notices/prodinra1/2011/05/
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The roles of auxins and cytokinins in mycorrhizal symbioses Inra
Barker, S.J.; Tagu, D..
Most land plant species that have been examined exist naturally with a higher fungus living in and around their roots in a symbiotic partnership called a mycorrhiza. Several types of mycorrhizal symbiosis exist, defined by the host/partner combination and the morphology of the symbiotic structures. The arbuscular mycorrhiza (AM) is ancient and may have co-evolved with land plants. Emerging results from gene expression studies have suggested that subsets of AM genes were co-opted during the evolution of other biotrophic symbioses. Here we compare the roles of phytohormones in AM symbiosis and ectomycorrhizas (EC), a more recent symbiosis. To date, there is little evidence of physiologic overlap between the two symbioses with respect to phytohormone...
Tipo: Journal Article Palavras-chave: ECTOMYCORHIZE; MYCORHIZE A ARBUSCULE; SUBSTANCE DE CROISSANCE VEGETALE PHYTOHORMONES; ARBUSCULAR MYCORRHIZA; ECTOMYCORRHIZA; CYTOKININ; ENOD40; AUXIN; ROOT MORPHOLOGY.
Ano: 2000 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0100028828085588&uri=/notices/prodinra1/2010/12/
Registros recuperados: 4
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