Does Cathaya argyrophylla, an ancient and threatened Pinaceae species endemic to China, show eco-physiological outliers to its Pinaceae relatives?
文献类型：期刊论文
| 作者 | Fan, Dayong; Wang, Xiangping; Zhang, Wangfeng1; Zhang, Xiangying2; Zhang, Shouren2; Xie, Zongqiang2
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| 刊名 | CONSERVATION PHYSIOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 8 |
| 关键词 | Hydraulic safety photosynthetic capacity phylogenetic signal species' distribution polygenetic quantile regression |
| ISSN号 | 2051-1434 |
| DOI | 10.1093/conphys/coaa094 |
| 文献子类 | Article |
| 英文摘要 | 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. |
| 学科主题 | Biodiversity Conservation ; Ecology ; Environmental Sciences ; Physiology |
| 出版地 | OXFORD |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000580628200001 |
| 出版者 | OXFORD UNIV PRESS |
| 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 |
| 源URL | [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 |
| 推荐引用方式 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). |
入库方式： OAI收割
来源：植物研究所
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