干旱区生态环境知识资源中心(Arid): Osmotic Adjustment of Soil Biocrust Mosses in Response to Desiccation Stress

Arid

DOI	10.1016/S1002-0160(15)30013-8
	Osmotic Adjustment of Soil Biocrust Mosses in Response to Desiccation Stress
	Zhao Xin; Shi Yong; Liu Yang; Jia Rongliang; Li Xinrong
来源期刊	Pedosphere
ISSN	1002-0160
出版年	2015
卷号	25 期号:3 页码:459-467
英文摘要	Biological soil crusts (biocrusts) widely occur in semiarid and arid regions throughout the world and play important roles in many desert ecosystems: protecting soil from wind erosion and detaining nutrient-rich dust and organic carbon. An experiment was conducted in the Shapotou revegetated area of the Tengger Desert, Ningxia Hui Autonomous Region of China to investigate the physiological responses of the dominant biocrust mosses, Bryum argenteum and Didymodon vinealis, to desiccant stress using different osmotic adjustments. B. argenteum and D. vinealis accumulated K~+, total soluble sugar, sucrose, trehalose, proline, and glycine betaine during desiccation. The proline content of B. argenteum was about two times higher than that of D. vinealis. The K~+ and glycine betaine contents in B. argenteum were slightly higher than those in D. vinealis. In contrast, the total soluble sugar, sucrose, and trehalose contents in D. vinealis were about 3 to 5 times higher than those in B. argenteum. With gradual desiccation stress, the Na+ content of B. argenteum was low and did not significantly change. On the contrary, the Na~+ content of D. vinealis sharply increased and reached a very high level of about 10 to 18 times higher than that of B. argenteum, indicating that B. argenteum and D. vinealis gradually adapted to desiccation stress by osmotic substances accumulation to different degrees.
英文关键词	biological soil crusts Bryum argenteum compatible solute Didymodon vinealis drought stress
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5429907
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335500
作者单位	Zhao Xin, Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Key Laboratory of Stress Physiology and Ecology, Gansu Province, Lanzhou, Gansu 730000, China.; Jia Rongliang, Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Key Laboratory of Stress Physiology and Ecology, Gansu Province, Lanzhou, Gansu 730000, China.; Li Xinrong, Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Key Laboratory of Stress Physiology and Ecology, Gansu Province, Lanzhou, Gansu 730000, China.; Shi Yong, Key Laboratory of Stress Physiology and Ecology, Gansu Province, Key Laboratory of Stress Physiology and Ecology, Gansu Province, Lanzhou, Gansu 730000, China.; Liu Yang, Shapotou Desert Research and Experiment Station, Cold and Arid R...
推荐引用方式 GB/T 7714	Zhao Xin,Shi Yong,Liu Yang,et al. Osmotic Adjustment of Soil Biocrust Mosses in Response to Desiccation Stress[J],2015,25(3):459-467.
APA	Zhao Xin,Shi Yong,Liu Yang,Jia Rongliang,&Li Xinrong.(2015).Osmotic Adjustment of Soil Biocrust Mosses in Response to Desiccation Stress.Pedosphere,25(3),459-467.
MLA	Zhao Xin,et al."Osmotic Adjustment of Soil Biocrust Mosses in Response to Desiccation Stress".Pedosphere 25.3(2015):459-467.