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Effects of Rhizosphere pH on Root Antioxidant System of the Super-Hybrid Rice Seedlings(PDF)

《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2011年04期
Page:
102-105
Research Field:
生命科学
Publishing date:

Info

Title:
Effects of Rhizosphere pH on Root Antioxidant System of the Super-Hybrid Rice Seedlings
Author(s):
Liu Shaohua1Wu Xuantong1Chen Guoxiang2Xu Guohua1Wang Renlei1
1.Faculty of Life Sciences and Chemistry,Jiangsu Institute of Education,Nanjing 210013,China
Keywords:
hybrid ricerhizosphere pHantioxidant systemreactive oxygen species
PACS:
S511
DOI:
-
Abstract:
The effects of different rhizosphere pH ( 4. 0、5. 0、6. 0、7. 0 and 8. 0) on the activities of superoxide dismutase ( SOD) ,peroxidase ( POD) and catalase ( CAT) , the contents of malondialdehyde ( MDA) ,ascorbic acid ( AsA) and Glutathione ( GSH) , and the production rate of superoxide anion were studied in roots of the hybrid rice " Liangyoupeijiu" seedlings with sandy culture. The results showed that,compared with the other groups,in the roots of the control ( pH6. 0) ,the production rate of O2 - . and contents of MDA were the lowest,whereas the activities of SOD and CAT were the strongest,and the contents of AsA and GSH were the highest. When the pH < 6. 0 or pH > 6. 0,there was significant difference between the control and the other groups in the above physiological indexes. Therefore,the rhizosphere pH 6. 0 is the most optimal for seedling growth of the hybrid rice“Liangyoupeijiu”

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Last Update: 2013-03-21