Does competitive asymmetry confer polyploid advantage under changing environments?

doi:10.1111/1365-2745.14100

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	Does competitive asymmetry confer polyploid advantage under changing environments?
	Guo,Wen; Wei,Na; Hao,Guang-You; Yang,Shi-Jian; Zhu,Zhi-Yong; Yang,Yong-Ping; Duan,Yuan-Wen
	2023
发表期刊	JOURNAL OF ECOLOGY
ISSN	1365-2745
摘要	1. Competitive interactions drive critical ecological processes in plant communities. Yet, how competitive interactions are influenced by polyploidy that has a widespread incidence in plants remains largely unknown. 2. To evaluate the hypothesis of competitive asymmetry between polyploids and diploids, we competed tetraploid and diploid plants of perennial herbaceous Chrysanthemum indicum L. ( Asteraceae) at different relative frequencies under contrasting soil water contents. We quantified the interaction intensity between competing plants of the same (intraploidy) and different ploidy levels (interploidy), and measured functional traits related to gas exchange and plant water use to understand the underlying mechanisms. 3. The stronger competitive effect of tetraploids on diploids than that of diploids on tetraploids provided evidence for the competitive asymmetry. As a stronger competitor, tetraploids were limited more by individuals of their own than by diploids. Such competitive asymmetry was not only maintained under reduced soil water content, but also translated into higher above-ground biomass of tetraploids. Tetraploids showed more resource-acquisitive traits than diploids under high soil water content and more resource-conservative traits under reduced soil water content. As such, the higher trait plasticity in tetraploids than diploids likely explained the competitive asymmetry. 4. Synthesis. These results elucidate the nature and magnitude of species interactions between polyploid and diploid plants under changing environments and the underlying mechanisms, and provide important insights into the prevalence and persistence of polyploid plants under a changing climate.
关键词	competition coefficient competitive asymmetry drought functional traits gas exchange polyploidy stress gradient hypothesis water use efficiency WATER-USE EFFICIENCY BRACHYPODIUM-DISTACHYON NICHE DIFFERENTIATION PLANT INTERACTIONS TRADE-OFFS ESTABLISHMENT EVOLUTIONARY DISTURBANCE ABILITY PHOTOSYNTHESIS
学科领域	Plant Sciences ; Environmental Sciences & Ecology
DOI	10.1111/1365-2745.14100
收录类别	SCI
WOS记录号	WOS:000965162400001
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75270
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Guo,Wen,Wei,Na,Hao,Guang-You,et al. Does competitive asymmetry confer polyploid advantage under changing environments?[J]. JOURNAL OF ECOLOGY,2023.
APA	Guo,Wen.,Wei,Na.,Hao,Guang-You.,Yang,Shi-Jian.,Zhu,Zhi-Yong.,...&Duan,Yuan-Wen.(2023).Does competitive asymmetry confer polyploid advantage under changing environments?.JOURNAL OF ECOLOGY.
MLA	Guo,Wen,et al."Does competitive asymmetry confer polyploid advantage under changing environments?".JOURNAL OF ECOLOGY (2023).

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