Leaf Photosynthetic Rate of Tropical Ferns Is Evolutionarily Linked to Water Transport Capacity
Zhang, Shi-Bao1,2; Sun, Mei2,3; Cao, Kun-Fang2; Hu, Hong1; Zhang, Jiao-Lin2
2014-01-09
发表期刊PLOS ONE
ISSN1932-6203
卷号9期号:1页码:e84682
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.
关键词Genome Size Stomatal Conductance Hydraulic Capacity Vascular Plants Cell-size Density Diversification Venation Angiosperms Forest
资助信息National Natural Science Foundation of China [31170315, 30900174, 31270453, 31370362]; West Light Foundation of the Chinese Academy of Sciences
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/17976
专题资源植物与生物技术所级重点实验室
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
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Zhang, Shi-Bao,Sun, Mei,Cao, Kun-Fang,et al. Leaf Photosynthetic Rate of Tropical Ferns Is Evolutionarily Linked to Water Transport Capacity[J]. PLOS ONE,2014,9(1):e84682.
APA Zhang, Shi-Bao,Sun, Mei,Cao, Kun-Fang,Hu, Hong,&Zhang, Jiao-Lin.(2014).Leaf Photosynthetic Rate of Tropical Ferns Is Evolutionarily Linked to Water Transport Capacity.PLOS ONE,9(1),e84682.
MLA Zhang, Shi-Bao,et al."Leaf Photosynthetic Rate of Tropical Ferns Is Evolutionarily Linked to Water Transport Capacity".PLOS ONE 9.1(2014):e84682.
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