The Physiological Response of Phyllostachys edulis under the Elevated Atmospheric Ozone

doi:10.3724/SP.J.1143.2012.11088

Abstract

Abstract:

In order to provide theoretical evidences for bamboo cultivation under the background of climate change, the method of opentop chambers (OTCs) was employed to approach the effects of elevated ozone on photosynthetic pigments content, lipid peroxidation and antioxidation enzymes in the leaves of Phyllostachys edulis. The result indicated that with the increasing of ozone concentration, the content of the chlorophyll, carotenoid and SOD activity decreased, while the content of souble protein, relative electrical conductivity, contents of MDA, O2- and the activity of POD increased.Correlation analyses showed that there was significant negative correlation between O2- content and SOD activity as well as photosynthetic pigment,whereas significant positive correlation between O2- and relative electeical conductivity, MDA, POD as well as soluble protein. It was summarried that, on one hand, long time exposure to high ozone concentration exposure, accelerated the aging of leaves, intensified the damage to membrane lipid, and destroyed the structure of cell membrane and the function of antioxidation system as well. It affected the regular growth of P.edulis. This research was conducted to provide theoretical evidence for bamboo cultivation during this time of possible climate change.

Key words: Phyllostachys edulis, Ozone, Photosynthetic pigment, Membrane lipid peroxidation, Antioxidant enzymes

CLC Number:

Q 945

PENG Ming-Hao-, LI Ying-Chun-, LI Ying-, GU Li-Jian-, CHEN Shuang-Lin. The Physiological Response of Phyllostachys edulis under the Elevated Atmospheric Ozone[J]. Plant Diversity, 2012, 34(01): 69-75.

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