Arid
DOI10.1007/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
ISSN0137-5881
EISSN1861-1664
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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