The bacterial pigment xanthomonadin offers protection against photodamage

被引：89

作者：

Rajagopal, L ^{[1
]}

Sundari, CS ^{[1
]}

Balasubramanian, D ^{[1
]}

Sonti, RV ^{[1
]}

机构：

[1] CTR CELLULAR & MOL BIOL,HYDERABAD 500007,ANDHRA PRADESH,INDIA

来源：

FEBS LETTERS | 1997年 / 415卷 / 02期

关键词：

bacterial blight of rice; xanthomonadin pigment; photoprotection; inhibition of lipid peroxidation;

D O I：

10.1016/S0014-5793(97)01109-5

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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. (C) 1997 Federation of European Biochemical Societies.

引用

页码：125 / 128

页数：4

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