Role of Ca2+ and NADPH Oxidase on Promotion Mechanism of Salt-resistence of Lonicera macranthoides by Exogenous ABA
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Abstract
The possible effects of Ca2+,EGTA,DPI on protective enzyme and NADPH oxidase of Lonicera macranthoides Hand.-Mazz seedlings under 200 mmolL NaCl stress in solution culture were studied and a common cultivar“Yulei No.1”was used.Results showed that,Ca2+ increased SOD,CAT and NADPH oxidase activity were more significant than ABA,EGTA significantly inhibited the activity of CAT,SOD and NADPH oxidase of the Lonicera macranthoides Hand.-Mazz.The activity of CAT,SOD and NADPH oxidase did not recover under EGTA+ABA treatment.It suggested that the ABA had no significant effect on improving the activity of protective enzyme in the absence of lacking Ca2+.DPI significantly inhibited the activity of CAT,SOD and NADPH oxidase of the Lonicera macranthoides Hand.-Mazz.And the activity of CAT,SOD and NADPH oxidase did not recover under EGTA+ABA treatment.
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