在巴西南部亚马逊地区,毛刺科的萼花Justicia calycina的功能叶片解剖是否反映了冠层梯度的变化?

IF 0.9 4区 生物学 Q4 PLANT SCIENCES Acta Botanica Brasilica Pub Date : 2022-01-01 DOI:10.1590/1677-941x-abb-2021-0335
Maísa Barbosa Lauton, E. Gressler, Jaqueline Amorim de Oliveira, P. Simioni, Norberto Gomes Ribeiro-Júnior, O. Yamashita, I. Silva
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引用次数: 0

摘要

杜鹃花是分布在南美洲北部的一种半灌木。尽管它广泛存在,但人们对它的解剖结构和在不同环境中的可塑性知之甚少。本研究的目的是为了评价白杨叶片解剖性状对白杨叶片解剖性状的影响。巴西马托格罗索州亚马孙南部的花萼花在林冠开放度的变化中进行调整。林区主要有:开阔茂密的伞形林和季节性落叶林(岩石露头)。在常规解剖技术的帮助下,我们对每个森林站点的10个个体的叶片进行了解剖测量。叶面解剖。花萼形态在不同林种间表现出相似的格局,22种林种叶片的维管束直径、栅栏薄壁厚度、近轴表皮气孔密度和毛状体密度4个性状差异显著(p<0.05)。这些叶片性状均表现出较高的可塑性指数,在密林和落叶林中表现出较高的可塑性指数。即使J。花萼在不同林型间解剖结构上的差异不大,这些差异是光合作用过程的基础。不同光照条件下叶片解剖性状的调整表明该物种具有一定程度的表型可塑性,这有助于其在巴西亚马逊地区不同森林植物地貌中的分布。
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Does the functional leaf anatomy of Justicia calycina (Acanthaceae) reflect variation across a canopy gradient in the Southern Brazilian Amazon?
Justicia calycina is a subshrub well distributed in northern South America. Despite its widespread occurrence, little is known about its anatomy and plasticity in different environments. Our study aimed to evaluate how leaf anatomical traits of J . calycina adjust in forest areas with variations in canopy openness in the Southern Amazon, Mato Grosso State, Brazil. Forest areas were: Open and Dense Ombrophilous Forest, and Seasonal Deciduous Forest (rocky outcrop). We performed anatomical measurements in leaves sampled on 10 individuals in each forest site, with the help of usual anatomy techniques. Foliar anatomy of J . calycina showed similar pattern among the studied forests, with significant difference (p<0.05) in four leaf traits among 22 studied: vascular bundle diameter, palisade parenchyma thickness, stomatal density and trichome density in adaxial epidermis. These leaf traits showed high plasticity index, with higher values in Dense Forest and in Deciduous Forest. Even though J . calycina showed overall little anatomical variation among forest types, the few attributes that differed are fundamental in the photosynthesis process. The adjustment in leaf anatomical traits under different luminosity conditions demonstrates a degree of phenotypic plasticity in the species, which contributes to its distribution in different forest phytophysiognomies in Brazilian Amazonia.
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来源期刊
Acta Botanica Brasilica
Acta Botanica Brasilica PLANT SCIENCES-
CiteScore
2.30
自引率
9.10%
发文量
32
审稿时长
6-12 weeks
期刊介绍: Experimental, theoretical and applied papers on all aspects of plant (including algae) and fungi biology are welcome. The submitted manuscript or its essential content must not have been published previously or be under consideration for publication elsewhere. Contributions should be substantial, written in high-quality English and show general interest. We expect that the submitted manuscript presents a great novelty in Botany, and this should attract a wide audience. Considering this, case studies are only considered if the narrative and implications are provided to be of general interest. Thus, manuscripts that report aspects of local interest are discouraged unless the implications of the findings are wide-reaching. Manuscripts with agronomic subjects are expected to contain a substantial amount of basic plant biology. Please see below some details for specific area.
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