The bacterial pigment xanthomonadin offers protection against photodamage

Rajagopal, Lakshmi ; Sivakama Sundari, C. ; Balasubramanian, D. ; Sonti, Ramesh V. (1997) The bacterial pigment xanthomonadin offers protection against photodamage FEBS Letters, 415 (2). pp. 125-128. ISSN 0014-5793

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Xanthomonas oryzae pv. oryzae is a bacterial pathogen that causes leaf blight, a serious disease of rice. Most members of the genus Xanthomonas produce yellow, membrane bound, brominated aryl polyene pigments called xanthomonadins whose functional role is unclear. We find that pigment-deficient mutants of X. oryzae pv. oryzae exhibit hypersensitivity to photobiological damage. A clone containing the xanthomonadin biosynthetic gene cluster alleviates the hypersensitivity of the pigment-deficient mutant. Extracts containing xanthomonadin provide protection against photodynamic lipid peroxidation in liposomes. These results lead us to suggest a role for the pigment, namely protection against photodamage.

Item Type:Article
Source:Copyright of this article belongs to Federation of European Biochemical Societies.
Keywords:Bacterial Blight of Rice; Xanthomonadin Pigment; Photoprotection; Inhibition of Lipid Peroxidation
ID Code:1235
Deposited On:04 Oct 2010 08:03
Last Modified:16 May 2016 12:23

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