Physiological Response of Phyllostachys rivalis Rhizome Roots to Long - term Water Stress

• Published in: Forest research (Beijing) Vol. 27; no. 5; pp. 621 - 625
• Main Authors: LIU, Yu-fang, CHEN, Shuang-lin, LI, Ying-chun, CHEN, Shan, GUO, Zi-wu
• Format: Journal Article
• Language: Chinese
• Published: 01.10.2014
• Subjects: Phyllostachys
• ISSN: 1001-1498

The purpose of this paper is to reveal the physiological response mechanism of rhizome roots of Phyllostachys rivalis to long-term water stress. The physiological response of primary and secondary rhizome roots of 1-year-old Ph. rivalis to long-term flooded conditions was studied in a pot experiment with treatments of artificial irrigation water supply (CK) and flooding six months (TR). The root activity, antioxidant enzyme activity, membrane lipid peroxidation and osmotic adjustment substance contents in bamboo rhizome roots were investigated. The results are as follows. In general, the root activity, antioxidant enzyme activity, MDA content, relative electron conduction and soluble protein content of primary roots were significantly higher than that of the secondary roots. Under longterm flooded conditions, the root activity, antioxidant enzyme activity of primary and secondary roots were significantly lower than that of the CK. The relative electron conductivity and MDA content increased significantly. The