光诱导的叶片解剖结构变化对叶肉中叶抵抗二氧化碳的细胞间和细胞组分的影响。

IF 4.2 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2024-05-14 DOI:10.1111/plb.13655
J. Janová, J. Kubásek, T. E. E. Grams, V. Zeisler-Diehl, L. Schreiber, J. Šantrůček
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引用次数: 0

摘要

中叶对二氧化碳扩散的阻力(rm)是光合作用和植物生长的主要限制之一。培育具有较低抗性的新品种需要了解其不同的组成部分。我们测试了一种新方法,用于估算Fagus sylvatica下胚层叶片二氧化碳浓度(c)的相对下降。该技术可得出叶片正面和背面的内部二氧化碳浓度比值 cd/cb、细胞间空气空间(IAS)中的缩减值以及 IAS 和叶绿体基质之间的细胞内缩减值 cc/cbd。该方法基于从叶片上下两面分离的叶片干物质和表皮蜡的碳同位素组成。我们对树冠剖面的叶片进行了研究,分析了光照和叶片解剖结构对 rm 在细胞间(rIAS)和细胞内(rliq)成分的吸收和分配的影响。通过使用传统同位素和气体交换技术对 rm 进行独立测量,检验了新方法的有效性。与背面蜡相比,73% 的被调查叶片正面表皮蜡富含 13C(平均高出 0.50‰),cd/cb 和 cc/cbd 的平均值分别为 0.98 和 0.70。在阳光下,rIAS 与 rliq 的比例为 5.5:94.5%,在阴影下为 14.8:85.2%。这种方法表明,rIAS 是 rm 的次要部分,但不可忽略,它反映了叶片解剖特征,即单位面积的叶片质量和厚度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of light-induced changes in leaf anatomy on intercellular and cellular components of mesophyll resistance for CO2 in Fagus sylvatica

Effect of light-induced changes in leaf anatomy on intercellular and cellular components of mesophyll resistance for CO2 in Fagus sylvatica

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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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