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Effects of Salt Stress on Antioxidant System and Ion Uptake of Strawberry(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年09期
Page:
1-4
Research Field:
Publishing date:

Info

Title:
Effects of Salt Stress on Antioxidant System and Ion Uptake of Strawberry
Author(s):
YAN Zhi-ming; WEI Yue; JIA Si-zhen; DONG Hui; JI Yi
Jiangsu Polytechnic of Agriculture and Forestry，Jurong，Jiangsu 212400
Keywords:
strawberry; salt stress; antioxidant system; ion uptake
PACS:
S 668.4
DOI:
-
Abstract:
Taking ‘Hongjia’ strawberry as materials，the effects of salt stress on antioxidant system and ion uptake of strawberry were investigated under salt stress using nutrient solution hydroponics.The results showed that SOD，POD and CAT activities in leaves of strawberry first showed increasing trend，these enzymes arrived maximum at 6 h，and then showed a downward trend；at the same time，O2-generation rate，H2O2 content，MDA content and membrane permeability all accelerated，and with stress prolonging increased larger.Salt stress significantly improved Na+?content，decreased K+?and Ca2+?contents in roots，stems and leaves of strawberry，these suggested that salt stress inhibited the K+?and Ca2+?absorption；salt stress decreased K+/Na+?and Ca2+/Na+?in roots，stems and leaves of strawberry.These results indicated that at early stress，plants improved its resistance by increasing antioxidant enzyme activities，but the antioxidant system was destroyed with stress prolonging.Salt stress also inhibited absorption of mineral ions of strawberry，and destroyed the ion balance in plants.

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Last Update: 2014-08-25