狭窄的血管-适应霜冻的常绿树叶的标志。

IF 3.6 3区 生物学 Q1 PLANT SCIENCES Plant Biology Pub Date : 2025-03-04 DOI:10.1111/plb.70005
A. J. Kowalski, T. P. Wyka
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引用次数: 0

摘要

冰冻诱导木质部导管栓塞的形成是常绿叶片在经历霜冻的地区所面临的挑战之一。鉴于永久性栓塞形成的可能性与导管直径有关,我们假设常绿树叶的血管直径应该小于落叶树叶。我们利用活的植物园标本对21种常绿植物和47种落叶植物的叶片进行了取样,这些植物来自不同的温带生物群落,具有广泛的分类多样性。我们测定了它们叶柄上最大血管的直径。在控制传导路径长度后,常绿叶片的导管明显小于落叶叶片。我们的研究结果表明,在寒冷的气候条件下,常绿叶片习性的导管直径减少具有选择性优势。这一结果概括了落叶和常绿物种之间的对比以前报道的茎。此外,在两种叶型中发现的导管直径与叶尖距离的强尺度关系表明,与常绿习性相关的导管直径的进化减少可能需要叶片大小的减少,这与其他研究中记录的趋势一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Narrow vessels – a hallmark of frost-adapted evergreen leaves

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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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