Functional traits and soil water availability shape competitive interactions in a diploid–polyploid complex

IF 5.6 1区 环境科学与生态学 Q1 ECOLOGY
Alba Rodríguez-Parra, Javier López-Jurado, Enrique Mateos-Naranjo, Francisco Balao
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Abstract

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功能性状和土壤水分有效性塑造了二倍体-多倍体复合体的竞争相互作用
即使在那些最初形成的多倍体植物物种中,也只有少数能长期存在。多倍体及其祖先细胞型在次生接触带的竞争性相互作用可能导致局部灭绝。水分有效性和功能性状分化等环境因素可能影响这些相互作用。在两种不同的灌溉制度下,对四种细胞型(2x、4x、6x和12x)的兄弟石竹进行了温室竞争试验。我们估计了生态位和适应度差异,并预测了两两竞争结果。此外,我们还探讨了叶片生理功能性状(SLA、AN、gs、LDMC、Fv/Fm和iWUE)对竞争互作的影响。土壤水分有效性改变了细胞类型之间的竞争动态,并预测了竞争排斥。在高水分有效度条件下,低倍性水平(2倍和4倍)优于高倍性水平(12倍和6倍),而后者在低水分有效度条件下表现出更强的竞争能力。这些差异可以通过与竞争效应(SLA)和竞争耐受性(AN、Fv/Fm和iWUE)相关的功能性状来解释。合成。我们的研究强调多倍体的长期命运在很大程度上取决于水分供应,高多倍体在干旱环境中具有竞争优势。这最终突出了功能性状在塑造细胞类型之间竞争动态中的作用。
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来源期刊
Journal of Ecology
Journal of Ecology 环境科学-生态学
CiteScore
10.90
自引率
5.50%
发文量
207
审稿时长
3.0 months
期刊介绍: Journal of Ecology publishes original research papers on all aspects of the ecology of plants (including algae), in both aquatic and terrestrial ecosystems. We do not publish papers concerned solely with cultivated plants and agricultural ecosystems. Studies of plant communities, populations or individual species are accepted, as well as studies of the interactions between plants and animals, fungi or bacteria, providing they focus on the ecology of the plants. We aim to bring important work using any ecological approach (including molecular techniques) to a wide international audience and therefore only publish papers with strong and ecological messages that advance our understanding of ecological principles.
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