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题名: Leaf Photosynthetic Rate of Tropical Ferns Is Evolutionarily Linked to Water Transport Capacity
作者: null(张石宝)1, 2; Sun, Mei2, 3; Cao, Kun-Fang2; Hu, Hong1; Zhang, Jiao-Lin2
刊名: PLOS ONE
关键词: GENOME SIZE ; STOMATAL CONDUCTANCE ; HYDRAULIC CAPACITY ; VASCULAR PLANTS ; CELL-SIZE ; DENSITY ; DIVERSIFICATION ; VENATION ; ANGIOSPERMS ; FOREST
英文摘要: Ferns usually have relatively lower photosynthetic potential than angiosperms. However, it is unclear whether low photosynthetic potential of ferns is linked to leaf water supply. We hypothesized that there is an evolutionary association of leaf water transport capacity with photosynthesis and stomatal density in ferns. In the present study, a series of functional traits relating to leaf anatomy, hydraulics and physiology were assessed in 19 terrestrial and 11 epiphytic ferns in a common garden, and analyzed by a comparative phylogenetics method. Compared with epiphytic ferns, terrestrial ferns had higher vein density (D-vein), stomatal density (SD), stomatal conductance (g(s)), and photosynthetic capacity (A(max)), but lower values for lower epidermal thickness (LET) and leaf thickness (LT). Across species, all traits varied significantly, but only stomatal length (SL) showed strong phylogenetic conservatism. A(max) was positively correlated with D-vein and g(s) with and without phylogenetic corrections. SD correlated positively with A(max), D-vein and g(s), with the correlation between SD and Dvein being significant after phylogenetic correction. Leaf water content showed significant correlations with LET, LT, and mesophyll thickness. Our results provide evidence that A(max) of the studied ferns is linked to leaf water transport capacity, and there was an evolutionary association between water supply and demand in ferns. These findings add new insights into the evolutionary correlations among traits involving carbon and water economy in ferns.
出版日期: 2014-01-09
卷号: 9, 期号:1, 页码:e84682
DOI标识: 10.1371/journal.pone.0084682
语种: 英语
收录类别: SCI
学科分类: Multidisciplinary Sciences
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/17976
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming, Yunnan, Peoples R China
2.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla, Yunnan, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China

Recommended Citation:
Zhang,ShiBao;Sun,Mei;Cao,KunFang;Hu,Hong;Zhang,JiaoLin*.Leaf Photosynthetic Rate of Tropical Ferns Is Evolutionarily Linked to Water Transport Capacity,PLOS ONE,2014,9(1):e84682
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