Correlated evolution in traits influencing leaf water balance in Dendrobium (Orchidaceae)
Sun, Mei1,2; Yang, Shi-Jian1,3; Zhang, Jiao-Lin1; Bartlett, Megan4; Zhang, Shi-Bao1,3; Zhang,SB (reprint author),Chinese Acad Sci,Kunming Inst Bot,Key Lab Econ Plants & Biotechnol,Kunming 650201,Yunnan,Peoples R China.; sbzhang@mail.kib.ac.cn
2014-11-01
发表期刊PLANT ECOLOGY
ISSN1385-0237
卷号215期号:11页码:1255-1267
摘要A favorable leaf water balance can be achieved through coordinated variation in multiple leaf traits. However, the role of evolutionary history in producing this trait coordination is not well understood, especially in epiphytic species. To address these limitations, we measured 11 leaf traits for 19 Dendrobium species grown in the same environment, and used phylogenetically independent contrasts to test how the co-evolution of these traits has contributed to leaf water balance in epiphytes. Our results show that more closely correlated species had similar habitats, geographical distribution, and some leaf traits (leaf density, upper cuticle thickness, and stomatal index), whereas distantly related species did not exhibit such similarities. Species originating from forests below the altitude of 1,500 m exhibited smaller leaf area, stomatal area, and stomatal index, but thicker leaves than those from forests above the altitude of 1,500 m. Stomatal density was evolutionarily correlated with vein density, upper and lower epidermal thicknesses, and leaf density. Leaf thickness was significantly correlated with stomatal density and vein density, while leaf area was significantly correlated with epidermal cell thicknesses, stomatal density, and stomatal area. These results found that both the environment and evolutionary history significantly affected leaf functional traits and ecological characteristics in Dendrobium, and supported the hypothesis that co-evolution in leaf traits is an important contributor to leaf water balance in Dendrobium. This study provides new insights into the evolution of ecological strategies in epiphytic orchids.
关键词Epiphytic Orchids Leaf Water Balance Phylogenetically Independent Contrasts Stomatal Traits Vein Density
资助信息National Natural Science Foundation of China [81172958]; National Natural Science Foundation of China [81172958]; Fund of State Key Laboratory of Phytochemistry and Plant Resources in West China [P2012-KF01]; Yong Academic and Technical Leader Raising Foundation of Yunnan Province [2009C1072]; Fund of State Key Laboratory of Phytochemistry and Plant Resources in West China [P2012-KF01]; Yong Academic and Technical Leader Raising Foundation of Yunnan Province [2009C1072]
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/151853/18462
专题植物化学与西部植物资源持续利用国家重点实验室
通讯作者Zhang,SB (reprint author),Chinese Acad Sci,Kunming Inst Bot,Key Lab Econ Plants & Biotechnol,Kunming 650201,Yunnan,Peoples R China.; sbzhang@mail.kib.ac.cn
作者单位1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Kunming 666303, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming 650201, Yunnan, Peoples R China
4.Univ Calif Los Angeles, Dept Ecol & Evolut, Los Angeles, CA 90095 USA
推荐引用方式
GB/T 7714
Sun, Mei,Yang, Shi-Jian,Zhang, Jiao-Lin,et al. Correlated evolution in traits influencing leaf water balance in Dendrobium (Orchidaceae)[J]. PLANT ECOLOGY,2014,215(11):1255-1267.
APA Sun, Mei.,Yang, Shi-Jian.,Zhang, Jiao-Lin.,Bartlett, Megan.,Zhang, Shi-Bao.,...&sbzhang@mail.kib.ac.cn.(2014).Correlated evolution in traits influencing leaf water balance in Dendrobium (Orchidaceae).PLANT ECOLOGY,215(11),1255-1267.
MLA Sun, Mei,et al."Correlated evolution in traits influencing leaf water balance in Dendrobium (Orchidaceae)".PLANT ECOLOGY 215.11(2014):1255-1267.
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