Differential phenotypic plasticity of subalpine trees predicts trait integration under climate warming

IF 8.3 1区 生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2024-08-19 DOI:10.1111/nph.20067
Rui He, Hang Shi, Man Hu, Quan Zhou, Haishan Dang, Quanfa Zhang
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Abstract

  • Understanding limiting factors of phenotypic plasticity is essential given its critical role in shaping biological adaptation and evolution in changing environments. It has been proposed that the pattern of phenotypic correlation could constrain trait plasticity. However, the interplay between phenotypic plasticity and integration has remained contentious.
  • We experimentally simulated climate warming in juveniles of three subalpine tree species by exposing them to three-year in situ open-top chambers (OTCs), and then measured functional plasticity of 72 eco-physiological traits to evaluate whether phenotypic integration constituted an intrinsic constraint to plasticity. We also tested the relationship between the differences in plasticity and maintenance in trait integration.
  • Phenotypic plasticity was positively associated with integration in deciduous tree species under warming. The difference in the plasticity of two paired traits could predict their integration in different environments, where traits displaying more similar plasticity were more likely to be correlated.
  • Our study showed no indication that phenotypic integration constrained plasticity. More importantly, we demonstrated that differential plasticity between traits might result in a notable reorganization of the trait associations, and that warming commonly induced a tighter phenotype. Our study provides new insights into the interplay between phenotypic plasticity and integration in subalpine trees under climate warming.
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亚高山树木的表型可塑性差异可预测气候变暖下的性状整合。
表型可塑性在不断变化的环境中对生物适应和进化起着至关重要的作用,因此了解表型可塑性的限制因素至关重要。有人提出,表型相关性模式可能制约性状的可塑性。然而,表型可塑性与整合之间的相互作用仍存在争议。我们在实验中模拟了气候变暖对三种亚高山树种幼树的影响,将它们置于为期三年的原位开顶室(OTC)中,然后测量了72个生态生理性状的功能可塑性,以评估表型整合是否构成对可塑性的内在约束。我们还测试了可塑性差异与性状整合维持之间的关系。在气候变暖条件下,落叶树种的表型可塑性与整合性呈正相关。两个配对性状的可塑性差异可以预测它们在不同环境中的整合情况,其中可塑性更相似的性状更有可能相互关联。我们的研究没有表明表型整合制约了可塑性。更重要的是,我们证明了性状之间不同的可塑性可能会导致性状关联的显著重组,变暖通常会诱导更紧密的表型。我们的研究为气候变暖条件下亚高山树木的表型可塑性和整合性之间的相互作用提供了新的见解。
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来源期刊
New Phytologist
New Phytologist 生物-植物科学
自引率
5.30%
发文量
728
期刊介绍: New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.
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