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Does Cathaya argyrophylla, an ancient and threatened Pinaceae species endemic to China, show eco-physiological outliers to its Pinaceae relatives?
Fan, Dayong; Wang, Xiangping; Zhang, Wangfeng1; Zhang, Xiangying2; Zhang, Shouren2; Xie, Zongqiang2
2020
发表期刊CONSERVATION PHYSIOLOGY
ISSN2051-1434
卷号8
摘要Cathaya argyrophylla is an ancient and threatened Pinaceae species endemic to China, but its eco-physiological traits are rarely reported. We hypothesized that Cathaya showed eco-physiological outliers to its Pinaceae relatives, which lead to its current endangered status. Here we collected the photosynthetic capacity (P-n, maximum photosynthesis rate) and branchlet hydraulic safety (P-50, the water potential at which a 50% loss in conductivity occurs) of Pinaceae species globally, including our measurements on Cathaya. We applied the phylogenetic comparative methods to investigate: (i) the phylogenetic signal of the two key traits across Pinaceae species, and (ii) the trait-climate relationships and the photosynthesis-cavitation resistance relationship across Pinaceae species. We applied the polygenetic quantile regression (PQR) method to assess whether Cathaya showed eco-physiological outliers to its Pinaceae relatives in terms of cavitation resistance and photosynthetic capacity. It was found that P-50, and to a less extent, P-n, had a strong phylogenetic signal consistent with niche conservation among Pinaceae species. Hydraulic safety largely determined non-threatened Pinaceae species' distribution across moisture gradients at the global scale. There was also an adaptive trade-off relationship between P-n and P-50. Cathaya is a high cavitation resistant, low photosynthetic capacity species. It showed eco-physiological outliers to its Pinaceae relatives because it had lower P-50 and P-n below the 10% quantile boundaries along moisture and/or temperature gradients; also, it was above the 90% quantile boundary of the P-n and P-50 relationship across non-endangered Pinaceae species. The PQR output demonstrated that in the subtropical area of China characterized by abundant rainfall, Cathaya has extra high hydraulic safety, suggesting inefficiency of carbon economy associated with either competition or other life history strategies, which lead to its current endangered status.
关键词Hydraulic safety photosynthetic capacity phylogenetic signal species' distribution polygenetic quantile regression
学科领域Biodiversity Conservation ; Ecology ; Environmental Sciences ; Physiology
DOI10.1093/conphys/coaa094
收录类别SCI
语种英语
WOS关键词PHYLOGENETIC NICHE CONSERVATISM ; XYLEM CAVITATION ; PHOTOSYNTHETIC CAPACITY ; HYDRAULIC EFFICIENCY ; GAS-EXCHANGE ; WOODY-PLANTS ; TRADE-OFF ; EVOLUTION ; DROUGHT ; TRAITS
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology ; Physiology
WOS记录号WOS:000580628200001
出版者OXFORD UNIV PRESS
文献子类Article
出版地OXFORD
资助机构National Key Research and Development Program of China [2019YFD1100403] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31870430] ; Hubei Shennongjia Forest Ecosystem National Field Scientific Observation and Research Station
作者邮箱dayong.fan@anu.edu.au ; xie@ibcas.ac.cn
作品OA属性Green Published, gold
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/21548
专题植被与环境变化国家重点实验室
作者单位1.Beijing Forestry Univ, Coll Forestry, 35 Qinghua East Rd, Beijing 100083, Peoples R China
2.Shihezi Univ, Key Lab Oasis Ecoagr Xinjiang Prod & Construct Co, 221 Beisi Rd, Shihezi 832000, Peoples R China
3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Xiangshan Nanxin Cun, Beijing 100093, Peoples R China
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GB/T 7714
Fan, Dayong,Wang, Xiangping,Zhang, Wangfeng,et al. Does Cathaya argyrophylla, an ancient and threatened Pinaceae species endemic to China, show eco-physiological outliers to its Pinaceae relatives?[J]. CONSERVATION PHYSIOLOGY,2020,8.
APA Fan, Dayong,Wang, Xiangping,Zhang, Wangfeng,Zhang, Xiangying,Zhang, Shouren,&Xie, Zongqiang.(2020).Does Cathaya argyrophylla, an ancient and threatened Pinaceae species endemic to China, show eco-physiological outliers to its Pinaceae relatives?.CONSERVATION PHYSIOLOGY,8.
MLA Fan, Dayong,et al."Does Cathaya argyrophylla, an ancient and threatened Pinaceae species endemic to China, show eco-physiological outliers to its Pinaceae relatives?".CONSERVATION PHYSIOLOGY 8(2020).
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