Seasonal Dynamics of Non-structural Carbohydrates Contents of Syntrichia caninervis among Different Microhabitats

doi:10.7522/j.issn.1000-694X.2017.00001

JOURNAL OF DESERT RESEARCH ›› 2017, Vol. 37 ›› Issue (2): 268-275.DOI: 10.7522/j.issn.1000-694X.2017.00001

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Seasonal Dynamics of Non-structural Carbohydrates Contents of Syntrichia caninervis among Different Microhabitats

Zhu Bingjian^1,2, Yin Benfeng³, Zhang Yuanming¹

1. Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. College of Life Science, Beijing Normal University, Beijing 100875, China

Received:2016-10-21 Revised:2017-01-03 Online:2017-03-20 Published:2017-03-20

Abstract

Abstract: Syntrichia caninervis, the dominant species of moss crust in the Gurbantunggut Desert, with only a single layer of cells, is very sensitive to environmental changes. Non-structural carbohydrates (NSC) can exhibit plants adaptive strategies to environmental factors changes. The contents of NSC and its components of S. caninervis shoot growing in three different microhabitats (alive shrub, dead shrub and exposed area) and two seasons( early spring rain-free period in April and high-temperature drying period in August ) were measured by the method of anthrone-sulfuric acid colorimetric method. The results showed that compared to those in April, the content of soluble sugar, fructose, starch and the total NSC of S. caninervis shoots increased significantly, respectively. The sucrose content of S. caninervis shoots growing in April and August exhibited significant differences among three different microhabitats, but the trend was opposite. Except that the soluble sugar content showed notable difference, no significant differences were observed in the contents of fructose, starch and the total NSC of S. caninervis shoot among three different microhabitats. There was a significant positive correlation between water content of S. caninervis shoot and the content of soluble sugar, fructose, starch, and NSC. Different microhabitats and seasons may shape different hydro-thermal factors regulating the total NSC and its components contents.

Key words: Gurbantunggut Desert, Syntrichia caninervis, microhabitats, non-structural carbohydrates, seasonal dynamics

CLC Number:

Q914.84

Zhu Bingjian, Yin Benfeng, Zhang Yuanming. Seasonal Dynamics of Non-structural Carbohydrates Contents of Syntrichia caninervis among Different Microhabitats[J]. JOURNAL OF DESERT RESEARCH, 2017, 37(2): 268-275.

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Seasonal Dynamics of Non-structural Carbohydrates Contents of Syntrichia caninervis among Different Microhabitats

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