alexa Plant growth promotion and induction of resistance in Camellia sinensis by Bacillus megaterium.
Agri and Aquaculture

Agri and Aquaculture

Journal of Fertilizers & Pesticides

Author(s): Chakraborty U, Chakraborty B, Basnet M

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Abstract Bacillus megaterium DE BARY TRS-4 was isolated from tea rhizosphere and tested for its ability to promote growth and cause disease reduction in tea plants. In vivo studies revealed the ability of this bacterium to promote growth of tea plants very significantly. Brown root rot disease, caused by Fomes lamaoensis was markedly reduced by application of the bacterium to the soil. Population of F. lamaoensis in soil before and after application of B. megaterium, as determined by ELISA and dot-blot using PAb raised against the pathogen, was shown to be greatly reduced in presence of the bacterium. Biochemical changes induced in tea plants were also examined. Root colonization by B. megaterium and subsequent inoculation with F. lamaoensis also led to an increase in polyphenolics, as well as in defense related enzymes-peroxidase, chitinase, beta -1,3-glucanase and phenyl alanine ammonia lyase. Determination of mechanism of action of this bacterium revealed it to be able to solubilize phosphate, produce IAA, siderophore and antifungal metabolite. The plant growth promotion and reduction of disease intensity have been shown to be due to a combination of several mechanisms. This article was published in J Basic Microbiol and referenced in Journal of Fertilizers & Pesticides

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