Journal
FEMS MICROBIOLOGY LETTERS
Volume 232, Issue 2, Pages 165-172Publisher
OXFORD UNIV PRESS
DOI: 10.1016/S0378-1097(04)00046-1
Keywords
DNA sequencing; polysaccharide biosynthesis; flagella synthesis
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The plant growth-promoting soil bacterium Azospirillum brasilense enhances growth of economically important crops, such as wheat, corn and rice. In order to improve plant growth, a close bacterial association with the plant roots is needed. Genes encoded on a 90-MDa plasmid, denoted pRhico plasmid, present in A. brasilense Sp7, play an important role in plant root interaction. Sequencing, annotation and in silico analysis of this 90-MDa plasmid revealed the presence of a large collection of genes encoding enzymes involved in surface polysaccharide biosynthesis. Analysis of the 90-MDa plasmid genome provided evidence for its essential role in the viability of the bacterial cell. (C) 2004 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.
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