Dharmapuri, Sridhar ; Sonti, Ramesh V. (1999) A transposon insertion in the gumG homologue of Xanthomonas oryzae pv. oryzae causes loss of extracellular polysaccharide production and virulence FEMS Microbiology Letters, 179 (1). pp. 53-59. ISSN 0378-1097
Full text not available from this repository.
Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1574-...
Related URL: http://dx.doi.org/10.1111/j.1574-6968.1999.tb08707.x
Abstract
Xanthomonas oryzae pv. oryzae causes a serious disease of rice called bacterial leaf blight. It produces copious amounts of extracellular polysaccharide (EPS). An EPS-and virulence-deficient mutant of X. oryzae pv. oryzae was isolated by Tn5 mutagenesis. The mutant allele in this strain was cloned by transposon tagging in the Escherichia coli vector pBluescript and the DNA sequences flanking the transposon insertion site were determined. Computer-based similarity searches in the DNA database using the BLAST algorithm showed these sequences to be 78% identical at the nucleotide level to a gene, gumG, in the gum cluster, which is required for EPS biosynthesis in Xanthomonas campestris pv. campestris. A 36-kb X. oryzae pv. oryzae genomic clone containing the putative EPS biosynthetic gene cluster of X. oryzae pv. oryzae restored both EPS production and virulence proficiency to the gumGXo::Tn5 mutant. The results suggest that EPS is an important virulence factor of X. oryzae pv. oryzae.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| Keywords: | Tn5; Extracellular Polysaccharide; GumG; Xanthomonas Campestris Pv; Campestris; Xanthomonas Oryzae Pv; Oryzae |
| ID Code: | 62632 |
| Deposited On: | 22 Sep 2011 02:47 |
| Last Modified: | 22 Sep 2011 02:47 |
Repository Staff Only: item control page
