Journal ArticleDOI
Bacterial endophytes in cotton: mechanisms of entering the plant
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TLDR
Investigations were conducted to determine how a systemic plant-colonizing bacterium Enterobacter asburiae JM22 enters cotton plant tissues, a plant growth-promoting strain with biocontrol potential against various pathogens.Abstract:
Investigations were conducted to determine how a systemic plant-colonizing bacterium Enterobacter asburiae JM22 enters cotton plant tissues. Passive uptake was excluded for JM22 by experimentation with glutaraldehyde-fixed (killed) bacterial cells applied to seeds and leaves; no bacteria were found internally or externally on roots or leaves. In contrast, application of live JM22 cells led to colonization of external and internal root and leaf tissues. Active penetration of JM22 in the absence of external wounding was demonstrated for cotton seedlings germinated on water agar and inoculated with the bacterial suspension. The mean internal bacterial population density for seedlings was 3.8 x lo3 CFUIg surface-disinfected radicle tissue. Studies of in planta enzymatic activity demonstrated hydrolysis of wall-bound cellulose in the vicinity of JM22 bacterial cells. The same phenomenon was observed for a cortical root colonizing bacterium, Pseudomonas fluorescens 89B-61, a plant growth-promoting strain with biocontrol potential against various pathogens.read more
Citations
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Bacterial endophytes in agricultural crops
TL;DR: Historically, endophytic bacteria have been thought to be weakly virulent plant pathogens but have recently been discovered to have several beneficial effects on host plants, such as plant growth promotion and increased resistance against plant pathogens and parasites.
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Biology and chemistry of endophytes.
TL;DR: This review focuses on new endophyte-related findings in biology and ecology, and also summarises the various metabolites isolated from endophytes.
Journal ArticleDOI
Bacterial Endophytes: Potential Role in Developing Sustainable Systems of Crop Production
TL;DR: Bacterial endophytes have been implicated in supplying biologically fixed nitrogen in non-legumes, and these associations can increase the nitrogen economy of a crop, reducing the requirement for N fertilizers.
Journal ArticleDOI
Endophytic Bacteria and Their Potential Applications
Cindy Lodewyckx,Jaco Vangronsveld,Fiona Porteous,Edward R. B. Moore,Safieh Taghavi,Max Mezgeay,Daniel Van Der Lelie +6 more
TL;DR: The authors wish to acknowledge the European Commission for their support to the ENDEGRADE project (EU PROJECT: QLK3- CT2000-00164).
Journal ArticleDOI
Diversity of endophytic bacterial populations and their interaction with Xylella fastidiosa in citrus plants.
Welington Luiz Araújo,Joelma Marcon,Walter Maccheroni,Jan Dirk van Elsas,Jim W. L. van Vuurde,João Lúcio de Azevedo,João Lúcio de Azevedo +6 more
TL;DR: The higher frequency of C. flaccumfaciens in asymptomatic plants suggests a role for this organism in the resistance of plants to CVC, and DGGE profiles can be used to detect some endophytic bacteria of citrus plants.
References
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Journal ArticleDOI
Induction of systemic resistance of cucumber to Colletotrichum orbiculare by select strains of plant growth-promoting rhizobacteria
TL;DR: Treatment of cucumber seeds with six PGPR strains resulted in a significant reduction in lesion size after challenge-inoculation with C. orbiculare, causing resistance in cucumber and anthracnose.
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Induced systemic resistance to cucumber diseases and increased plant growth by plant growth-promoting rhizobacteria under field conditions.
TL;DR: It is demonstrated that PGPR-mediated ISR was operative under field conditions with consistent effects against challenge-inoculated angular leaf spot and naturally occurring anthracnose, along with significant effects on early-season plant growth promotion and yield enhancement.
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Survey of indigenous bacterial endophytes from cotton and sweet corn
TL;DR: The genotypic diversity of indigenous bacterial endophytes within stems and roots of sweet corn and cotton was determined in field trials throughout one growing season and the diversity of bacteria was greater in roots than stems for each crop.
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Biological Control of Fusarium Wilt on Cotton by Use of Endophytic Bacteria
TL;DR: Results indicate that endophytic bacteria should be evaluated further for efficacy as biological control agents of vascular pathogens and that some endophytes may survive, multiply, and exhibit limited movement following introduction into cotton.
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Sites and processes of association between diazotrophs and grasses
TL;DR: Les organismes diazotrophes, les effets de l'inoculation avec Azospirillum, les mecanismes de the reponse de croissance de la plante, et la colonisation de the rhizosphere.