Belowground systems in tropical savanna: Fabaceae morphoanatomical traits and their relation to fire

IF 4.2 3区 生物学 Q1 PLANT SCIENCES Plant Biology Pub Date : 2024-10-16 DOI:10.1111/plb.13730
A. S. Leal, A. Fidelis, M. A. de Araujo, B. B. Cozin, A. R. Martins
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热带稀树草原的地下系统:豆科植物的形态解剖特征及其与火灾的关系。
火后再生是塞拉多地区木本植被的特点。有几个物种(如豆科植物)在火灾后可以重新生长,这是因为它们的地下结构(如木质部)具有贮藏芽的功能,能够快速分配资源以形成新的地上枝条,这在火灾易发的生态系统中是一个优势。因此,我们评估了地下器官、芽及其储藏的形态解剖结构,以阐明与火灾有关的再生功能特征。除了具有木质部的植物有很强的重新发芽能力和/或其相关的根吸器横向繁殖能力外,它们还能通过防御化合物的存在提供抵御病原体的保护。我们对在巴西中部开阔稀树草原采集的 8 种豆科植物的地下器官进行了形态解剖学评估和组织化学测试。两个物种的地下器官是直根块茎,其余六个物种的地下器官是木质部。所有木质部的上部都有芽。这些器官主要由木质化组织组成,含有防御(酚类化合物和脂质物质)和储存(淀粉)物质。所有木栓质根都与块根有关,有两个物种的块根还是吸盘根。因此,地下贮藏器官的存在与贮藏的防御化合物相结合,很可能有助于所研究的豆科植物在火灾易发的生态系统中存活。
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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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