干旱区生态环境知识资源中心(Arid): Photosynthetic performance of Setaria viridis to soil drought and rewatering alternations

Arid

	Photosynthetic performance of Setaria viridis to soil drought and rewatering alternations
	Luo, YaYong; Zhao, XueYong; Zhou, RuiLian; Huang, YingXin; Zuo, XiaoAn
通讯作者	Luo, YY
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2009
卷号	1 期号:5 页码:404-411
英文摘要	The ability of psammophyte (a plant that grows in sand or sandy soil) to withstand and recover from severe droughts is crucial for desertification control and restoration of degraded vegetation in semi-arid sandy land in northern China. Responses of the photosynthetic gas exchange and chlorophyll fluorescence of an annual (Setaria viridis) were measured through three cycles of soil drying and rewatering. Results showed that the net photosynthesis rate (P-n) decreased by 95 percent, 91 percent, and 61 percent at end of three drought periods; the stomatal conductance (g(s)) decreased by 72 percent, 73 percent, and 53 percent; the transpiration rate (T-r) decreased by 70 percent, 69 percent, and 37 percent; and water-use efficiency (WUE) decreased by 83 percent, 69 percent, and 38 percent. At the same time, the trapping probability with no dark adaptation (F-V'/F-M') decreased by 70 percent, 12 percent, and 10 percent, while the electron transport per cross-section (ET0'/CS'(0)) decreased by 80 percent, 45 percent, and 13 percent. The intercellular CO2 (C-i) increased by 1.77, 1.02, and 0.66 times, and the dissipation per cross-section (DI0'/CS0') increased by 98 percent, 28 percent, and 22 percent. These results indicated that S. viridis was subjected to photoinhibition and some nonstomatal limitation of photosynthesis under drought. However, the above photosynthetic characteristics were restored to control values after three or four days of rewatering. The capability to recover from drought may contribute to the plant's use of water as efficiently as possible. Furthermore, during the subsequent drought spells, suppression of Pn, gs, Tr, F-V'/F-M', and ET0'/CS0' decreased or slowed down following the drying and rewatering alternations, especially in the third drought spell.
英文关键词	chlorophyll fluorescence gas exchange repeated soil drying and rewatering JIP-test
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000422278400002
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329322
作者单位	[Luo, YaYong; Zhao, XueYong; Huang, YingXin; Zuo, XiaoAn] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China; [Luo, YaYong] Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Zhou, RuiLian] Ludong Univ, Dept Biol Sci & Biotechnol, Yantai 264025, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Luo, YaYong,Zhao, XueYong,Zhou, RuiLian,et al. Photosynthetic performance of Setaria viridis to soil drought and rewatering alternations[J]. 中国科学院西北生态环境资源研究院,2009,1(5):404-411.
APA	Luo, YaYong,Zhao, XueYong,Zhou, RuiLian,Huang, YingXin,&Zuo, XiaoAn.(2009).Photosynthetic performance of Setaria viridis to soil drought and rewatering alternations.SCIENCES IN COLD AND ARID REGIONS,1(5),404-411.
MLA	Luo, YaYong,et al."Photosynthetic performance of Setaria viridis to soil drought and rewatering alternations".SCIENCES IN COLD AND ARID REGIONS 1.5(2009):404-411.