Plant physiology and biochemistry

Chlorophyll Content and Photosynthetic Efficiency of Thuidium kanedae at Different Altitudes

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  • (1.School of Life Sciences, Guizhou Normal University, Guiyang 550025, Guizhou China; 2.Hangzhou No.2 High School Qianjiang, Hangzhou 311215, Zhejiang China; 3.School of Life Science, East China Normal University, Shanghai 200241,China)

Received date: 2021-07-22

  Revised date: 2021-08-23

  Online published: 2021-08-30

Abstract

Using Thuidium kanedae as the test material, which were collected at different altitudes from 1500 m to 3100 m of Baihualing, Gaoligong Mountain, Yunnan province, the chlorophyll content and actual photosynthetic quantum yield (YⅡ) were compared and the variation characteristics of photosynthetic characteristics were studied. The results showed that Y(Ⅱ) was negatively correlated with the content of total chlorophyll, chlorophyll a, chlorophyll b, and the ratio of chlorophyll a/b. In addition, the trends of the total chlorophyll content, chlorophyll a content and chlorophyll b content all showed a unimodal distribution pattern, which increased first and then decreased with the increase of altitude. However, with the further increase of altitude, the change of total chlorophyll content and chlorophyll a content was not obvious, while the chlorophyll b showed an obvious upward trend. The ratio of chlorophyll a/b showed a unimodal distribution pattern at low altitude, and then decreased slowly with the increase of altitude. The Y(Ⅱ) showed an increasing trend with the increase of altitude as a whole, and showed a sharp upward trend at high altitude. The results of this study will provide references for revealing the physiological mechanisms of bryophytes adapting to the ecological environment under different altitude gradients.

Cite this article

TANG Lu-yan, . Chlorophyll Content and Photosynthetic Efficiency of Thuidium kanedae at Different Altitudes[J]. Subtropical Plant Science, 2021 , 50(04) : 251 -256 . DOI: 10.3969/j.issn.1009-7791.2021.04.002

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