Arid
DOI10.1007/s00606-013-0827-5
Leaf anatomical studies of Chamaecrista subsect. Baseophyllum (Leguminosae, Caesalpinioideae): new evidence for the up-ranking of the varieties to the species level
Cotta Coutinho, Italo Antonio1; Teodoro Francino, Dayana Maria2; Strozi Alves Meira, Renata Maria1
通讯作者Strozi Alves Meira, Renata Maria
来源期刊PLANT SYSTEMATICS AND EVOLUTION
ISSN0378-2697
EISSN1615-6110
出版年2013
卷号299期号:9页码:1709-1720
英文摘要

This study aims to determine whether morphoanatomical characters of the leaves of the species of Chamaecrista sect. Absus subsection Baseophyllum could be used to support an up-ranking of C. cytisoides varieties to the species level as previously defined by molecular studies. The significance of anatomical adaptive strategies to arid environments is also discussed. Standard light microscopy techniques and histochemical tests were used for both morphoanatomical and histochemical characterization of the leaves. All the species studied share a single-layered epidermis, actinodromous-camptodromous-brochidodromous type of venation, vascular bundles surrounded by layers of fibers bounded externally by a sheath of cells containing solitary crystals, enlarged tracheids at the vein endings, vascular petiole/rachis tissue with a parenchymatous pith, accessory vascular bundles, mucilage idioblasts and hypodermis in the mesophyll, colleters, and non-secretory trichomes. The position and type of stomata, type of mesophyll, number of palisade and spongy parenchyma layers, position of mucilage idioblasts in the mesophyll, and the number of accessory vascular bundles of petiole/rachis provided useful characters for discriminating the eight species of the subsect. Baseophyllum. Histochemical tests reveal the presence of total polysaccharides, pectins, mucilage and phenolic compounds in the idioblasts. Other xeromorphic characters such as thickened outer periclinal cell walls, compact mesophyll, mucilage idioblasts and hypodermis in the mesophyll may help enable the studied species to survive in exposed sunny areas.


英文关键词Campo rupestre Colleter Ecological anatomy Extrafloral nectaries Hypodermis Mucilage idioblasts Secretory structures Section Absus
类型Article
语种英语
国家Brazil
收录类别SCI-E
WOS记录号WOS:000326291200008
WOS关键词SECRETORY STRUCTURES ; RAIN-FOREST ; MIMOSOIDEAE ; MORPHOLOGY ; EVOLUTION
WOS类目Plant Sciences ; Evolutionary Biology
WOS研究方向Plant Sciences ; Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/179317
作者单位1.Univ Fed Vicosa Minas Gerais, Dept Biol Vegetal Anat Vegetal, BR-36570000 Vicosa, MG, Brazil;
2.Univ Fed Vales Jequitinhonha E Mucuri, Dept Ciencias Biol Anat Vegetal, BR-39100000 Diamantina, MG, Brazil
推荐引用方式
GB/T 7714
Cotta Coutinho, Italo Antonio,Teodoro Francino, Dayana Maria,Strozi Alves Meira, Renata Maria. Leaf anatomical studies of Chamaecrista subsect. Baseophyllum (Leguminosae, Caesalpinioideae): new evidence for the up-ranking of the varieties to the species level[J],2013,299(9):1709-1720.
APA Cotta Coutinho, Italo Antonio,Teodoro Francino, Dayana Maria,&Strozi Alves Meira, Renata Maria.(2013).Leaf anatomical studies of Chamaecrista subsect. Baseophyllum (Leguminosae, Caesalpinioideae): new evidence for the up-ranking of the varieties to the species level.PLANT SYSTEMATICS AND EVOLUTION,299(9),1709-1720.
MLA Cotta Coutinho, Italo Antonio,et al."Leaf anatomical studies of Chamaecrista subsect. Baseophyllum (Leguminosae, Caesalpinioideae): new evidence for the up-ranking of the varieties to the species level".PLANT SYSTEMATICS AND EVOLUTION 299.9(2013):1709-1720.
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