| Repression of mineral phosphate solubilizing phenotype in the presence of weak organic acids in plant growth promoting fluorescent pseudomonads. | |
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MedLine Citation:
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PMID: 21050746 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Two phosphate solubilizing bacteria (PSB), M3 and SP1, were obtained from the rhizosphere of mungbean and sweet potato, respectively and identified as strains of Pseudomonas aeruginosa. Their rock phosphate (RP) solubilizing abilities were found to be due to secretion high amount of gluconic acid. In the presence of malate and succinate, individually and as mixture, the P solubilizing ability of both the strains was considerably reduced. This was correlated with a nearly 80% decrease in the activity of the glucose dehydrogenase (GDH) but not gluconate dehydrogenase (GAD) in both the isolates. Thus, GDH enzyme, catalyzing the periplasmic production of gluconic acid, is under reverse catabolite repression control by organic acids in P. aeruginosa M3 and SP1. This is of relevance in rhizospheric conditions and is a new explanation for the lack of field efficacy of such PSB. |
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Authors:
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Divya K Patel; Prayag Murawala; G Archana; G Naresh Kumar |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-10-15 |
Journal Detail:
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Title: Bioresource technology Volume: 102 ISSN: 1873-2976 ISO Abbreviation: Bioresour. Technol. Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: England |
Other Details:
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Languages: eng Pagination: 3055-61 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Biochemistry, Faculty of Science, Maharaja Sayajirao University of Baroda, Vadodara, India. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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