Annotation of the pRhico plasmid ofAzospirillum brasilensereveals its role in determining the outer surface composition
Open Access
- 1 March 2004
- journal article
- Published by Oxford University Press (OUP) in FEMS Microbiology Letters
- Vol. 232 (2) , 165-172
- https://doi.org/10.1016/s0378-1097(04)00046-1
Abstract
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.Keywords
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