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Evaluation of Streptomyces spp. for their plant-growth-promotion traits in rice

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Relation http://oar.icrisat.org/7063/
http://dx.doi.org/10.1139/cjm-2013-0287
 
Title Evaluation of Streptomyces spp. for their plant-growth-promotion traits in rice
 
Creator Gopalakrishnan, S
Vadlamudi, S
Apparla, S
Bandikinda, P
Vijayabharathi, R
Bhimineni, R K
Rupela, Om
 
Subject Agriculture-Farming, Production, Technology, Economics
 
Description Five strains of Streptomyces (CAI-17, CAI-68, CAI-78, KAI-26, and KAI-27) were previously reported to have potential for charcoal rot control and plant growth promotion (PGP) in sorghum. In this study, those 5 Streptomyces strains were characterized for their enzymatic activities and evaluated for their PGP capabilities on rice. All the Streptomyces strains were able to produce lipase and β-1,3-glucanase; grew in NaCl (up to 8%), at pH 5–13, and at temperatures 20–40 °C; and were resistant to ampicillin, sensitive to nalidixic acid, and highly sensitive to chloramphenicol, kanamycin, streptomycin, and tetracycline. They were highly tolerant to the fungicide bavistin but were highly sensitive to benlate, benomyl, and radonil. When evaluated on rice in the field, Streptomyces significantly enhanced tiller and panicle numbers, stover and grain yields, dry matter, root length, volume and dry weight, compared with the control. In the rhizosphere at harvest, microbial biomass carbon and nitrogen, dehydrogenase activity, total nitrogen, available phosphorus, and % organic carbon were also found significantly higher in Streptomyces-treated plots than in the control plots. This study further confirms that the selected Streptomyces have PGP activities.
 
Publisher National Research Council Canada
 
Date 2013
 
Type Article
PeerReviewed
 
Format application/pdf
application/pdf
 
Language en
en
 
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Identifier http://oar.icrisat.org/7063/2/Gopalakrishnan_eta_Post-print_2013.pdf
http://oar.icrisat.org/7063/1/CanJM_59%20534%E2%80%93539_2013.pdf
Gopalakrishnan, S and Vadlamudi, S and Apparla, S and Bandikinda, P and Vijayabharathi, R and Bhimineni, R K and Rupela, Om (2013) Evaluation of Streptomyces spp. for their plant-growth-promotion traits in rice. Canadian Journal of Microbiology, 59 (8). pp. 534-539. ISSN 1480-3275