Cadmium modulates NADPH oxidase activity and expression in sunflower leaves

被引：53

作者：

Groppa, M. D. ^{[1
]}

Ianuzzo, M. P. ^{[1
]}

Rosales, E. P. ^{[1
]}

Vazquez, S. C. ^{[2
]}

Benavides, M. P. ^{[1
]}

机构：

[1] Univ Buenos Aires, Fac Farm & Bioquim, Dept Quim Biol, Catedra Quim Biol Vegetal, RA-1113 Buenos Aires, DF, Argentina

[2] Univ Buenos Aires, Fac Farm & Bioquim, Catedra Microbiol Ind & Biotecnol, Dept Microbiol Inmunol & Biotecnol, RA-1113 Buenos Aires, DF, Argentina

来源：

BIOLOGIA PLANTARUM | 2012年 / 56卷 / 01期

关键词：

Helianthus annuus; reactive oxygen species; superoxide anion; APOPLASTIC OXIDATIVE BURST; OXYGEN SPECIES PRODUCTION; TOBACCO CELLS; CALCIUM-CHANNELS; NITRIC-OXIDE; STRESS; ACCUMULATION; GROWTH; PLANTS; INVOLVEMENT;

D O I：

10.1007/s10535-012-0036-z

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The production of reactive oxygen species (ROS) and the ways by which ROS are generated are very important facts related to heavy metal toxicity in plants. In this work, superoxide anion (O-2(center dot-)) generation diminished in cadmium treated sunflower (Helianthus annuus L.) leaf discs, and this reduction was time and Cd-concentration dependent. In line with these findings, we observed that NADPH-dependent oxidase activity was significantly inhibited by 0.1 and 0.5 mM Cd2+ treatments and the expression of the NADPH oxidase putative gene related to O-2(center dot-) synthesis in sunflower leaves was 83 % inhibited by 0.1 mM CdCl2 and almost completely depleted by 0.5 mM CdCl2.

引用

页码：167 / 171

页数：5

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