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Effects of elevated CO2 concentration on physiological characters of three dwarf ornamental bamboo species.

ZHUANG Ming-hao1,2, CHEN Shuang-lin1, LI Ying-chun1, GUO Zi-wu1, YANG Qing-ping1   

  1. (1Research institute of Subtropical Forestry, Chinese Forestry Academy, Fuyang 311400, Zhejiang, China; 2Experimental Centre of Subtropical Forestry, Chinese Forestry Academy, Fenyi 336600, Jiangxi, China)
  • Online:2013-09-18 Published:2013-09-18

Abstract: By using opentop chambers (OTCs) to simulate the scenes of elevated CO2 concentrations \[500 μmol·mol-1(T1) and 700 μmol·mol-1(T2)\], and taking ambient atmospheric CO2 concentration as the control (CK), this paper studied the effects of elevated CO2 concentration on the lipid peroxidation and antioxidation enzyme system in Indocalamus decorus, Pleioblastus kongosanensis, and Sasa glabra leaves. After 103 days treatment, the O2-· and MDA contents, relative electron conduction, and soluble sugar content in the three dwarf ornamental bamboo species leaves in T1 had no obvious change, but the activities of antioxidation enzymes (SOD, POD, CAT, and APX) changed to a certain extent. In T2, the MDA content and relative electron conduction had no obvious change, but the O2-· and soluble sugar contents and the antioxidation enzymes activities changed obviously. The adaptation capacity of the three bamboo species to elevated CO2 concentration was in the order of I. decorus > P.kongosanensis > S. glabra.