Tripartite interactions among <Emphasis Type="Italic">Paenibacillus lentimorbus</Emphasis> NRRL B-30488, <Emphasis Type="Italic">Piriformospora indica</Emphasis> DSM 11827, and <Emphasis Type="Italic">Cicer arietinum</Emphasis> L. |
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Authors: | Chandra Shekhar Nautiyal Puneet Singh Chauhan Sangeeta Mehta DasGupta Karishma Seem Ajit Varma William J Staddon |
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Institution: | (1) Division of Plant Microbe Interactions, National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226 001, India;(2) Amity Institute of Microbial Technology, Amity University Uttar Pradesh, E-3, 4th Floor, Sector 125, Noida, 201303, India;(3) Department of Biological Sciences, Eastern Kentucky University, 521 Lancaster Ave., 235 Moore Building, Richmond, KY 40475, USA |
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Abstract: | Tripartite interactions among Paenibacillus lentimorbus NRRL B-30488 (B-30488), Piriformospora indica DSM 11827 (DSM 11827) and their consortia (B-30488:DSM 11827:: 1:1) with native rhizobial population in the rhizosphere of
Cicer arietinum L. (Chick pea) was tested for enhancing nodulations and plant growth promotion. Number of nodules and dry weight per plant
significantly enhanced (P = 0.05), which is further evident by N, P, and K uptake by plants and were found to be maximum in B-30488 treated followed
by B-30488: DSM 11827 and DSM 11827, as compared with uninoculated control, in 60 days grown chickpea plants. Microbial community
structure in the rhizosphere of the four treatments was assessed, using Biolog Eco and MT plates. Principal component analysis
(PCA) of carbon source utilization pattern on Biolog Eco plates did not show any clustering among the four samples indicating
that in case of individually DSM 11827 and B-30488 treated chickpea rhizosphere there was significant change in microbial
community structure, compared with lesser changes in un-inoculated and B-30488 and DSM 11827 consortium treated chickpea rhizosphere
microflora. Additional carbon sources tested using Biolog MT plates, higher activity of lignin, chitin, and cellulose utilizing
microbial communities in the rhizosphere being stimulated by root exudates treated with B-30488 alone or in consortia with
DSM 11827, and, in turn, should encourage beneficial symbiotic or mutualistic microorganisms that can act as plant growth
promoting and biocontrol agents. |
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