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题名: Correlated evolution in traits influencing leaf water balance in Dendrobium (Orchidaceae)
作者: Sun, Mei1, 2; Yang, Shi-Jian1, 3; Zhang, Jiao-Lin1; Bartlett, Megan4; Zhang, Shi-Bao1, 3
刊名: PLANT ECOLOGY
出版日期: 2014-11-01
卷号: 215, 期号:11, 页码:1255-1267
关键词: Epiphytic orchids ; Leaf water balance ; Phylogenetically independent contrasts ; Stomatal traits ; Vein density
学科分类: Plant Sciences;Ecology;Forestry
DOI: 10.1007/s11258-014-0383-2
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
文章类型: Article
英文摘要: 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.
类目[WOS]: Plant Sciences ; Ecology ; Forestry
研究领域[WOS]: Plant Sciences ; Environmental Sciences & Ecology ; Forestry
关键词[WOS]: STOMATAL DENSITY ; INDEPENDENT CONTRASTS ; VENATION ARCHITECTURE ; VASCULAR EPIPHYTES ; FOREST ; RADIATION ; CAPACITY ; NUTRIENT ; ECOLOGY ; DIVERSIFICATION
收录类别: SCI
项目资助者: 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]
语种: 英语
WOS记录号: WOS:000344154400003
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/18462
Appears in Collections:植物化学与西部植物资源持续利用国家重点实验室_期刊论文

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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

Recommended Citation:
Sun,Mei;Yang,Shi-Jian;Zhang,Jiao-Lin;Bartlett,Megan;Zhang,Shi-Bao.Correlated evolution in traits influencing leaf water balance in Dendrobium (Orchidaceae),PLANT ECOLOGY,2014,4(96):53725-53729
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文件名: Sun-2014-Correlated evolution in traits influe.pdf
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