XTBG OpenIR  > 其他
Freezing resistance in Patagonian woody shrubs: the role of cell wall elasticity and stem vessel size
Zhang, Yong-Jiang; Bucci, Sandra J.; Arias, Nadia S.; Scholz, Fabian G.; Hao, Guang-You; Cao, Kun-Fang; Goldstein, Guillermo
2016
Source PublicationTREE PHYSIOLOGY
ISSN0829-318X
Volume36Issue:8Pages:1007-1018
AbstractFreezing resistance through avoidance or tolerance of extracellular ice nucleation is important for plant survival in habitats with frequent subzero temperatures. However, the role of cell walls in leaf freezing resistance and the coordination between leaf and stem physiological processes under subzero temperatures are not well understood. We studied leaf and stem responses to freezing temperatures, leaf and stem supercooling, leaf bulk elastic modulus and stem xylem vessel size of six Patagonian shrub species from two sites (plateau and low elevation sites) with different elevation and minimum temperatures. Ice seeding was initiated in the stem and quickly spread to leaves, but two species from the plateau site had barriers against rapid spread of ice. Shrubs with xylem vessels smaller in diameter had greater stem supercooling capacity, i.e., ice nucleated at lower subzero temperatures. Only one species with the lowest ice nucleation temperature among all species studied exhibited freezing avoidance by substantial supercooling, while the rest were able to tolerate extracellular freezing from -11.3 to -20 degrees C. Leaves of species with more rigid cell walls (higher bulk elastic modulus) could survive freezing to lower subzero temperatures, suggesting that rigid cell walls potentially reduce the degree of physical injury to cell membranes during the extracellular freezing and/or thaw processes. In conclusion, our results reveal the temporal spatial ice spreading pattern (from stem to leaves) in Patagonian shrubs, and indicate the role of xylem vessel size in determining supercooling capacity and the role of cell wall elasticity in determining leaf tolerance of extracellular ice formation.
Subject AreaForestry
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10457
Collection其他
Recommended Citation
GB/T 7714
Zhang, Yong-Jiang,Bucci, Sandra J.,Arias, Nadia S.,et al. Freezing resistance in Patagonian woody shrubs: the role of cell wall elasticity and stem vessel size[J]. TREE PHYSIOLOGY,2016,36(8):1007-1018.
APA Zhang, Yong-Jiang.,Bucci, Sandra J..,Arias, Nadia S..,Scholz, Fabian G..,Hao, Guang-You.,...&Goldstein, Guillermo.(2016).Freezing resistance in Patagonian woody shrubs: the role of cell wall elasticity and stem vessel size.TREE PHYSIOLOGY,36(8),1007-1018.
MLA Zhang, Yong-Jiang,et al."Freezing resistance in Patagonian woody shrubs: the role of cell wall elasticity and stem vessel size".TREE PHYSIOLOGY 36.8(2016):1007-1018.
Files in This Item: Download All
File Name/Size DocType Version Access License
Freezing resistance (1988KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Yong-Jiang]'s Articles
[Bucci, Sandra J.]'s Articles
[Arias, Nadia S.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Yong-Jiang]'s Articles
[Bucci, Sandra J.]'s Articles
[Arias, Nadia S.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Yong-Jiang]'s Articles
[Bucci, Sandra J.]'s Articles
[Arias, Nadia S.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Freezing resistance in Patagonian woody shrubs_ the role of cell wall elasticity and stem vessel size.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

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