Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11258-013-0285-8 |
The distribution of four Caragana species is related to their differential responses to drought stress | |
Fang, Xiang-Wen1; Turner, Neil C.1,2,3; Palta, Jairo A.4,5; Yu, Ming-Xi1; Gao, Tian-Peng6; Li, Feng-Min1,3 | |
通讯作者 | Fang, Xiang-Wen |
来源期刊 | PLANT ECOLOGY
![]() |
ISSN | 1385-0237 |
EISSN | 1573-5052 |
出版年 | 2014 |
卷号 | 215期号:1页码:133-142 |
英文摘要 | Caragana species are widespread in northwest China. However, species in semiarid areas of Inner Mongolia experience summer and autumn rainfall, whereas morphologically similar close relatives in arid areas in Xinjiang Province experience wet springs, but hot dry summers. We hypothesize that the differences among species in response to soil drought help to explain their distributions. A comparison of the closely related species C. intermedia and C. microphylla from Inner Mongolia (semiarid species) and C. pruinosa and C. spinosa from Xinjiang (arid species) was conducted to examine whether responses to a water deficit in a pot experiment were associated with the environments of their habitat. In the two semiarid species, the stomatal conductance was relatively insensitive to the decrease in predawn leaf water potential (I-leaf), and leaves did not abscise or die even when the I-leaf decreased below -6.0 MPa, while in seedlings of the two arid species the stomata closed at a relatively high I-leaf, and the leaves abscised gradually when I-leaf fell below about -3.0 MPa. Furthermore, major vein density, minor vein density and the cubed ratio of the conduit wall thickness to the conduit lumen breadth [(t/b)(3)] of minor veins increased by an average of 60, 150 and 220 %, respectively, in the semiarid species compared with the arid species. The results indicated that semiarid species have typical anisohydric properties, while arid species have typical isohydric properties. We suggest that the divergence in water-use strategies in the genus may be associated with variation in vein architecture, and may possibly play an important role in determining the distribution of these species in the different environments of northwest China. |
英文关键词 | Caragana species Drought resistance Leaf abscission Stomatal conductance Water deficit Water-use strategies |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000329622500012 |
WOS关键词 | CARBON-ISOTOPE RATIOS ; HYDRAULIC TRAITS ; VENATION ARCHITECTURE ; RAINFALL GRADIENT ; TROPICAL FORESTS ; LEAF HYDRAULICS ; WATER STATUS ; TOLERANCE ; KORSHINSKII ; STRATEGIES |
WOS类目 | Plant Sciences ; Ecology ; Forestry |
WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry |
来源机构 | 兰州大学 ; Commonwealth Scientific and Industrial Research Organisation ; University of Western Australia |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/184268 |
作者单位 | 1.Lanzhou Univ, Sch Life Sci, Inst Arid Agroecol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China; 2.Univ Western Australia, Ctr Legumes Mediterranean Agr, Crawley, WA 6009, Australia; 3.Univ Western Australia, UWA Inst Agr, Crawley, WA 6009, Australia; 4.CSIRO Plant Ind, Wembley, WA 6913, Australia; 5.Univ Western Australia, Sch Plant Biol, Fac Sci, Crawley, WA 6009, Australia; 6.Lanzhou City Univ, State Key Lab Urban Ecol & Environm Biotechnol, Lanzhou 730070, Peoples R China |
推荐引用方式 GB/T 7714 | Fang, Xiang-Wen,Turner, Neil C.,Palta, Jairo A.,et al. The distribution of four Caragana species is related to their differential responses to drought stress[J]. 兰州大学, Commonwealth Scientific and Industrial Research Organisation, University of Western Australia,2014,215(1):133-142. |
APA | Fang, Xiang-Wen,Turner, Neil C.,Palta, Jairo A.,Yu, Ming-Xi,Gao, Tian-Peng,&Li, Feng-Min.(2014).The distribution of four Caragana species is related to their differential responses to drought stress.PLANT ECOLOGY,215(1),133-142. |
MLA | Fang, Xiang-Wen,et al."The distribution of four Caragana species is related to their differential responses to drought stress".PLANT ECOLOGY 215.1(2014):133-142. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。