Advanced   Register
XTBG OpenIR  > 2012年后新成立研究组  > 期刊论文

title: Stronger cooling effects of transpiration and leaf physical traits of plants from a hot dry habitat than from a hot wet habitat
author: Lin, Hua;  Chen, Yajun;  Zhang, Houlei;  Fu, Peili;  Fan, Zexin
Issued Date: 2017
Abstract: Leaf temperature exerts an important impact on the microenvironment and physiological processes of leaves. Plants from different habitats have different strategies to regulate leaf temperature. The relative importance of physical traits and transpiration for leaf temperature regulation in the hot habitat is still unclear. We investigated 22 leaf physical traits, transpiration, and thermal properties of 38 canopy species of seedlings in a greenhouse, including 18 dominant species from a hot wet habitat (HW) and 20 dominant species from a hot dry habitat (HD). To separate the impact of transpiration and leaf physical traits on leaf temperature, we measured the diurnal courses of leaf temperatures with and without transpiration. The temperature of a reference leaf beside each individual was measured simultaneously to render temperatures comparable. Generally, the species from HD showed lower leaf temperatures than the species from HW under the same conditions. Both transpiration capacity and cooling effect of leaf physical traits were stronger for the plants from HD. Active transpiration provides a suitable thermal environment for photosynthesis, while xeromorphic leaves can dampen heat stress when transpiration is suppressed. Higher vein density and stomatal pore area index (SPI) facilitated higher transpiration capacity of the plants from HD. Meanwhile, shorter leaves and thinner lower epidermis of the plants from HD were more efficient in heat transfer, although relationships were much weaker than the synergic effect of all the physical traits. Our results confirmed that transpiration and leaf physical traits provided double insurance for avoiding overheating, particularly for plant from HD. We emphasize that transpiration is a more effective way to cool leaves than physical traits when water is sufficient, which may be an important adaptation for plant from HD where rainfall is sporadic. Our results provide further insight into the relationship between physical traits and transpiration for the regulation of leaf temperature, and the co-evolution of gas exchange and thermal regulation of leaves. A is available for this article.
Related URLs: 10.1111/1365-2435.12923
Appears in Collections:2012年后新成立研究组_期刊论文

Files in This Item:

File SizeFormat
Stronger cooling effects of transpiration and leaf physical traits of plants from a hot dry habitat than from a hot wet habitat.pdf893KbAdobe PDFView  Download

全文许可: Creative Commons 署名-非商业性使用-相同方式共享 3.0

Recommended Citation:
Lin, Hua,Chen, Yajun,Zhang, Houlei,et al. Stronger Cooling Effects Of Transpiration And Leaf Physical Traits Of Plants From A Hot Dry Habitat Than From A Hot Wet Habitat[J]. Functional Ecology,2017,31(12):2202-2211.

SCI Citaion Data:
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Lin, Hua]'s Articles
 [Chen, Yajun]'s Articles
 [Zhang, Houlei]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Lin, Hua]‘s Articles
 [Chen, Yajun]‘s Articles
 [Zhang, Houlei]‘s Articles
Scirus search
 Similar articles in Scirus
Related Copyright Policies
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to  Add to Digg  Add to Reddit 
所有评论 (0)
内 容:
Email:  *
验证码:   刷新
标 题:
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.



Valid XHTML 1.0!
Powered by CSpace