Soils support an enormous microbial diversity, but the ecological drivers of this diversity are poorly understood. Interactions between the roots of individual grass species and the arbuscular mycorrhizal (AM) fungi and bacteria in their rhizoplane were studied in a grazed, unimproved upland pasture. Individual root fragments were isolated from soil cores, DNA extracted and used to identify pla...

We investigated the prevalence of seed borne fungal pathogens in rice variety BRRI Dhan46 and to evaluate the efficacy of antagonistic bacteria in controlling seed borne disease. A composite sample of BRRI Dhan46 was assayed. Five seed borne fungi viz. Fusarium sp., Bipolaris oryzae, Curvularia sp., Gliocladium sp. and Aspergillus flavus were isolated from the rice seeds. Fifteen probable antag...

Rising atmospheric CO(2) levels are predicted to have major consequences on carbon cycling and the functioning of terrestrial ecosystems. Increased photosynthetic activity is expected, especially for C-3 plants, thereby influencing vegetation dynamics; however, little is known about the path of fixed carbon into soil-borne communities and resulting feedbacks on ecosystem function. Here, we exam...

Plant-associated microbial diversity encompasses symbionts, protecting their host against various aggressions. Mycorrhizal and rhizospheric microorganisms buffer effects of soil toxic compounds and soil-borne pathogens. Endophytic bacteria and fungi, some of which are vertically inherited through seeds, take part in plant protection by acting directly on aggressive factors (mainly pathogens and...

Trichoderma fungi are promising candidates for biocontrol agents and plant growth promoters. atrobrunneum T. simmonsii were evaluated the control of soil-borne phytopathogenic fungi, in present study. Dual culture tests with Rhizoctonia solani Fusarium oxysporum f. sp. lycopersici used to conduct vitro evaluation. In presence Trichoderma, phytopathogen’s rate was inhibited up 59.70% R. 42.57% F...

Chitinases catalyze the hydrolysis of chitin, an unbranched polymer of beta-1,4-N-acetylglucosamine. In recent years, soil-borne microorganisms that produce chitinases are considered as potential biocontrol agents against fungi and nematodes which causes diseases of agricultural crops. Chitinases also play an important physiological and ecological role in ecosystems as recyclers of chitin, by g...