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Seed germination responses to seasonal temperature and drought stress are species-specific but not related to seed size in a desert steppe: Implications for effect of climate change on community structure

文献类型：期刊论文

作者Yi, Fengyan1; Wang, Zhaoren5; Baskin, Carol C.; Baskin, Jerry M.; Ye, Ruhan1; Sun, Hailian1; Zhang, Yuanyuan1; Ye, Xuehua; Liu, Guofang; Yang, Xuejun
刊名ECOLOGY AND EVOLUTION
出版日期2019
卷号9期号:4页码:2149-2159
关键词climate change community structure desert steppe drought stress seasonal temperature seed germination seed size
ISSN号2045-7758
DOI10.1002/ece3.4909
文献子类Article
英文摘要Investigating how seed germination of multiple species in an ecosystem responds to environmental conditions is crucial for understanding the mechanisms for community structure and biodiversity maintenance. However, knowledge of seed germination response of species to environmental conditions is still scarce at the community level. We hypothesized that responses of seed germination to environmental conditions differ among species at the community level, and that germination response is not correlated with seed size. To test this hypothesis, we determined the response of seed germination of 20 common species in the Siziwang Desert Steppe, China, to seasonal temperature regimes (representing April, May, June, and July) and drought stress (0, -0.003, -0.027, -0.155, and -0.87MPa). Seed germination percentage increased with increasing temperature regime, but Allium ramosum, Allium tenuissimum, Artemisia annua, Artemisia mongolica,Artemisia scoparia, Artemisia sieversiana, Bassia dasyphylla, Kochia prastrata, and Neopallasia pectinata germinated to >60% in the lowest temperature regime (April). Germination decreased with increasing water stress, but Allium ramosum, Artemisia annua, Artemisia scoparia, Bassia dasyphylla, Heteropappus altaicus, Kochia prastrata, Neopallasia pectinata, and Potentilla tanacetifolia germinated to near 60% at -0.87MPa. Among these eight species, germination of six was tolerant to both temperature and water stress. Mean germination percentage in the four temperature regimes and the five water potentials was not significantly correlated with seed mass or seed area, which were highly correlated. Our results suggest that the species-specific germination responses to environmental conditions are important in structuring the desert steppe community and have implications for predicting community structure under climate change. Thus, the predicted warmer and dryer climate will favor germination of drought-tolerant species, resulting in altered proportions of germinants of different species and subsequently change in community composition of the desert steppe.
学科主题Ecology ; Evolutionary Biology
出版地HOBOKEN
WOS关键词NATURAL-POPULATION ; WINTER ANNUALS ; DORMANCY ; TRAITS ; EVOLUTION ; SURVIVAL ; TIME ; STRATEGIES ; DISPERSAL ; PREDATION
WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology
语种英语
WOS记录号WOS:000461114900048
出版者WILEY
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31470476, 31570416, 31770514] ; Initiative Projects of Inner Mongolia Research Center for Prataculture, Chinese Academy of Sciences
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/19849]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, Inner Mongolia Res Ctr Prataculture, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
2.Baskin, Carol C.] Univ Kentucky, Dept Plant & Soil Sci, Lexington, KY USA
3.Baskin, Carol C.; Baskin, Jerry M.] Univ Kentucky, Dept Biol, Lexington, KY USA
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot, Peoples R China
推荐引用方式
GB/T 7714		 Yi, Fengyan,Wang, Zhaoren,Baskin, Carol C.,et al. Seed germination responses to seasonal temperature and drought stress are species-specific but not related to seed size in a desert steppe: Implications for effect of climate change on community structure[J]. ECOLOGY AND EVOLUTION,2019,9(4):2149-2159.
APA Yi, Fengyan.,Wang, Zhaoren.,Baskin, Carol C..,Baskin, Jerry M..,Ye, Ruhan.,...&Huang, Zhenying.(2019).Seed germination responses to seasonal temperature and drought stress are species-specific but not related to seed size in a desert steppe: Implications for effect of climate change on community structure.ECOLOGY AND EVOLUTION,9(4),2149-2159.
MLA Yi, Fengyan,et al."Seed germination responses to seasonal temperature and drought stress are species-specific but not related to seed size in a desert steppe: Implications for effect of climate change on community structure".ECOLOGY AND EVOLUTION 9.4(2019):2149-2159.

入库方式： OAI收割

来源：植物研究所

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