[The effect of gamma-aminobutyric acid in superoxide dismutase, peroxidase and catalase activity response to salt stress in maize seedling].
Salt stress induced Gamma-aminobutyric acid (GABA) accumulation in maize plants. The germination of maize seeds was inhibited seriously by NaCl treatment, while exogenous GABA reduced the inhibition of NaCl on the seeds germination. Effects on SOD, POD and CAT activity of GABA were detected. 1-2 mmol/L GABA induced the increase of the activity of SOD, POD and CAT about 20%. Because of SOD, CAT and POD are important protective enzymes which can eliminate active oxygen, so GABA can alleviate the damage of salt stress through promoting the activity of the protective enzyme system.
Tian
Xiao Lei
XL
State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100094, China.
Wu
Xiao Lan
XL
Li
Yun
Y
Zhang
Shu Qiu
SQ
D002374:Catalase / Q000378:metabolism*; D004789:Enzyme Activation / Q000187:drug effects; D009195:Peroxidase / Q000378:metabolism*; D012492:Salts / Q000494:pharmacology*; D036226:Seedlings / Q000187:drug effects* / Q000201:enzymology; D013482:Superoxide Dismutase / Q000378:metabolism*; D003313:Zea mays / Q000187:drug effects* / Q000201:enzymology; D005680:gamma-Aminobutyric Acid / Q000494:pharmacology*
D012492:Salts; D005680:gamma-Aminobutyric Acid; D002374:Catalase; D009195:Peroxidase; D013482:Superoxide Dismutase