Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11738-017-2467-9 |
Analysis of changes in anatomical characteristics and physiologic features of heteromorphic leaves in a desert tree, Populus euphratica | |
Hao, Jianqing1; Yue, Ning2; Zheng, Caixia2 | |
通讯作者 | Zheng, Caixia |
来源期刊 | ACTA PHYSIOLOGIAE PLANTARUM
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ISSN | 0137-5881 |
EISSN | 1861-1664 |
出版年 | 2017 |
卷号 | 39期号:8 |
英文摘要 | Populus euphratica Oliv. is well-adapted to extreme desert environments and possess the characteristic of heterophylly. On the same tree, the lanceolate, broad-ovate, and dentate broad-ovate leaves distribute in the different tiers of the canopy. The lanceolate leaves distribute on the lower canopy, broad-ovate leaves on the middle canopy, and dentate broad-ovate leaves on the upper canopy. The leaf structure was found to be xeromorphic. The stomatal densities of the three typical leaves were different and decreased in value from dentate broadovate, to broad-ovate, and to lanceolate leaves. The osmotic potentials at full and zero turgor were lowest in dentate broad-ovate leaves. In an appropriate growth environment, the chlorophyll fluorescence parameters of the three leaf types were almost the same and significantly changed upon exposure to short-term water stress. These results showed that dentate broad-ovate leaves can maintain their normal size and shape under arid and hot conditions because of their relatively thick cell wall and high mechanical strength. Moreover, dentate broad-ovate leaves had more developed vascular bundles in the main vein than the other types and thus more efficiently transported water and salts. These results suggested that dentate broad-ovate leaves can efficiently adapt to changing conditions, with more obvious xeromorphic characteristics and a relatively higher photosynthesis rate under drought conditions, compared with the others leaf types. |
英文关键词 | Anatomical structure P-Vcurve Heteromorphic leaves Populus euphratica Oliv |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000405471300011 |
WOS关键词 | WATER RELATIONS ; LEAF ANATOMY ; GAS-EXCHANGE ; STRESS ; DROUGHT ; PRESSURE ; TURGOR ; PLANTS ; RESPONSES ; POPLAR |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
来源机构 | 北京林业大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/196992 |
作者单位 | 1.Shanxi Med Univ, Sch Basic Med Sci, Xinjian Nan Lu 56, Taiyuan 030001, Peoples R China; 2.Beijing Forestry Univ, Coll Biol Sci & Technol, Box 162,Qing Hua Dong Lu 35, Beijing 100083, Peoples R China |
推荐引用方式 GB/T 7714 | Hao, Jianqing,Yue, Ning,Zheng, Caixia. Analysis of changes in anatomical characteristics and physiologic features of heteromorphic leaves in a desert tree, Populus euphratica[J]. 北京林业大学,2017,39(8). |
APA | Hao, Jianqing,Yue, Ning,&Zheng, Caixia.(2017).Analysis of changes in anatomical characteristics and physiologic features of heteromorphic leaves in a desert tree, Populus euphratica.ACTA PHYSIOLOGIAE PLANTARUM,39(8). |
MLA | Hao, Jianqing,et al."Analysis of changes in anatomical characteristics and physiologic features of heteromorphic leaves in a desert tree, Populus euphratica".ACTA PHYSIOLOGIAE PLANTARUM 39.8(2017). |
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