[Response of POD and CAT during seeds of rice, wheat and rape germination on acid rain stress].
The effects of simulated acid rain (pH 2.5 - 5.0) on the activities of POD and CAT were investigated during germination of rice (O. sativa), wheat (T. aestivum) and rape (B. chinensis var. oleifera) seeds. Compared with the control (CK), the amplitude of the change in the activity of CAT and POD is that rice (28.8%, 31.7%) < wheat (34.7%, 48.3%) < rape (79.3%, 50.0%), respectively. The pH significantly different (p < 0.05) from CK follows the order: rice (3.5) > wheat (4.0) > rape (5.0). All of these revealed that the ability of resisting acid rain stress is that rice is stronger than wheat and rape is the worst. Under the same condition, the amplitude of the change in the activity of CAT is more sensitivity toward acid rain stress than that of POD. The difference in free radicals removed by these 3 species is one of the reasons why the germinating indexes behaved differently.
Wang
Li-hong
LH
The Key Lab. of Industrial Biotechnology, Ministry of Education, Southern Yangtze University, Wuxi 214036, China.
Huang
Xiao-hua
XH
Zhou
Qing
Q
D015258:Acid Rain / Q000009:adverse effects*; D001937:Brassica / Q000254:growth & development*; D002374:Catalase / Q000737:chemistry; D018525:Germination; D012275:Oryza / Q000254:growth & development*; D009195:Peroxidase / Q000737:chemistry; D012639:Seeds / Q000254:growth & development; D014908:Triticum / Q000254:growth & development*
D015258:Acid Rain; D002374:Catalase; D009195:Peroxidase