表型决定锡金喜马拉雅杜鹃属植物的叶片功能特征

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Shweta Basnett, Soubadra M. Devy
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引用次数: 4

摘要

海拔梯度提供了一个理想的环境来推断物种对预测的未来气候变化的功能特征反应。在植物中,叶片功能特征有助于评估它们应对各种资源的能力。短垂直距离内非生物条件的变化会影响植物的表型,特别是叶片和开花持续时间,以及特异性和特异性内的叶片功能性状。然而,研究叶片功能性状和海拔梯度上的酚期之间关系的研究是有限的。我们测试了锡金喜马拉雅10种杜鹃的叶片大小、叶片厚度、比叶面积和叶片持续时间之间的关系。所有研究的性状在不同物种之间都有显著差异,但功能性状的特异内变异仅在少数物种中观察到。叶片大小和厚度与海拔高度呈显著负相关,比较系统发育方法显示叶片性状与叶片持续时间之间存在密切关系。我们观察到,在叶片持续时间较长、叶片和开花时间重叠较少的物种中,叶片厚度和大小较高。相反,叶片持续时间较短、开花和叶片持续时间重叠相对较多的物种,其叶片厚度和叶片大小较低。叶片特征,如叶片厚度和叶片大小,在10个杜鹃品种中也表现出强烈的系统发育信号。总的来说,根据我们的发现,我们推断,沿着海拔梯度,叶片性状对未来温度升高的反应程度可能会随着物种的酚学持续时间和系统发育而变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phenology determines leaf functional traits across Rhododendron species in the Sikkim Himalaya

Elevation gradients provide an ideal setting to infer species' functional trait responses to predicted future climate change. In plants, leaf functional traits help assess their capacity to cope with varying resources. Variation in abiotic conditions over short vertical distances can influence plant phenology, particularly leafing and flowering durations, and leaf functional traits at both inter- and intra-specific levels. However, studies examining relationships between leaf functional traits and phenology duration along elevation gradients are limited. We tested the relationship between leaf size, leaf thickness, specific leaf area, and leafing durations in 10 Rhododendron species in the Sikkim Himalaya. All the investigated traits varied significantly across species, but intra-specific variation in functional traits was observed only among a few. Leaf size and thickness showed significant negative relationships with elevation and a comparative phylogenetic method exhibited a strong relationship between leaf traits and leafing duration. We observed higher leaf thickness and size in species with longer leafing durations and less overlap in leafing and flowering durations. In contrast, species with shorter leafing durations and relatively more overlap in their flowering and leafing durations showed lower leaf thickness and leaf size. Leaf traits such as leaf thickness and leaf size also exhibited a strong phylogenetic signal across 10 Rhododendron species. Overall, from our findings, we infer that along an elevation gradient, the magnitude of leaf trait responses to future increases in temperature may vary depending on species phenology durations and phylogeny.

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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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