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Microbial dynamics in rhizosphere at different growth stages of rice (Oryza sativa L.) based on plant growth promoting functions.

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Title Microbial dynamics in rhizosphere at different growth stages of rice (Oryza sativa L.) based on plant growth promoting functions.
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Creator Renu, Pramod Kumar Sahu, Upasana Sahu, Manish S Bhoyar, Rajiv K. Singh and Munish Kumar
 
Subject Rhizosphere microbial community; rice plants (Oryza sativa L.); siderophore production; ammonia production; P-solubization
 
Description Not Available
In the present study 101 bacterial isolates were obtained from rhizosphere of rice plants (Oryza
sativa L.) cv PR-118 and PRH-10 cultivated in a field at ICAR-Indian Institute of Seed Science, Mau
Nath Bhanjan, Uttar Pradesh, India at different stages of growth seedling stage [37 days old after
transplantation (RI stage)], booting stage [80 days old after transplantation (RII stage)], Maturating
stage [100 days old after transplantation (RIII stage)]. The bacterial isolates were tested for various
nutrient mobilizing properties as well as plant growth promotion activities including siderphore
production, ammonia production and P solublization in in-vitro conditions. Seventy nine bacterial
isolates were found to be siderophore producers, 78 were ammonia producers and 39 were Psolublizers
with varying potentials in different activities. It was observed that siderophore producers
declined in number as the plant ages but simultaneously the efficiency of siderophore production
among them increased with the age of plant. The number of ammonia producers increased from
seedling stage to booting stage and declined at maturity stage and the same trend at different growth
stages of plant was observed in the ammonia production capability of the isolates. Similar trend
was observed for the number of P solublizers and their P solublization capability which in both the
cases was found to be maximum at booting stage. The present study reveals that the rhizospheric
microbial population and functions changes with the physiological requirement of plants during its
developmental growth stages as well as nutritional status of soil.
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Date 2023-09-19T10:03:22Z
2023-09-19T10:03:22Z
2016-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/80536
 
Language English
 
Relation Not Available;
 
Publisher Not Available