A light and scanning electron microscopic diagnosis of leaf epidermal morphology and its systematic implications in Dryopteridaceae: Investigating 12 Pakistani taxa

doi:10.1016/j.micron.2018.05.008

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	A light and scanning electron microscopic diagnosis of leaf epidermal morphology and its systematic implications in Dryopteridaceae: Investigating 12 Pakistani taxa
	Shah, Syed Nasar ; Ahmad, Mushtaq ; Zafar, Muhammad ; Malik, Khafsa ; Rashid, Neelam ; Ullah, Fazal ; Zaman, Wajid 1,2; Ali, Maroof
刊名	MICRON
	2018
卷号	111 页码:36-49
关键词	Foliar micromorphology SEM LM Dryopteris and Polystichum Pakistan
ISSN号	0968-4328
DOI	10.1016/j.micron.2018.05.008
文献子类	Article
英文摘要	Dryopteris and Polystichum are the 2 complex taxonomic genera of Dryopteridaceae. The comparative foliar epidermal anatomy of 12 species of both genera from Pakistan were studied using standard protocols of light microscopy (LM) and scanning electron microscopy (SEM). The objective of which was systematic comparison and investigation to elucidate the taxonomic importance of foliar micromorphology, which may be useful to taxonomists for identifying complex Dryopteridaceae taxa. Principal component analysis and UPGMA clustering analysis were performed to test the validity of leaf anatomical features as method of separating species and genera. The foliar epidermal anatomy described here is a good source of taxonomic characters in both groups that can help genera and species delimitation. This is the first report on leaf micromorphology in most of these species. Observation of foliar anatomy showed that stomata are only present on the abaxial surface; i.e., leaves of all species are hypostomatic. The shapes of epidermal cells in all studied species are irregular. The anticlinal walls are strongly lobed, irregular wavy and elongated wavy. However, substantial variation in epidermal cell size and other stomatal features were observed on both tipper and lower surfaces in all investigated species. Two types of stomata were observed in all studied species. The presence of polocytic stomata in Dtyopteris and staurocytic stomata in Polystichum are the important characters for the segregation of these genera. Elongate elliptic stomata] shape, narrow kidney shaped guard cells and broad elliptic shaped stomata] pores are diagnostic for all five species of Dryopteris selected. On the other hand, size and number of epidermal cells, lobes per cell, stomata] size, subsidiary cell size, stomatal pore size and stomatal index are the key features for species differentiation in Polystichum. An identification key was developed in order to apply the foliar anatomical characters in the discrimination of the species studied.
学科主题	Microscopy
出版地	OXFORD
WOS关键词	POLYSTICHUM DRYOPTERIDACEAE ; HISTORICAL BIOGEOGRAPHY ; MOLECULAR PHYLOGENY ; CHLOROPLAST RBCL ; ANATOMY ; ORIGIN ; FERNS ; CLASSIFICATION ; EVOLUTION ; FREQUENCY
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000438002300005
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/20550]
专题	系统与进化植物学国家重点实验室
作者单位	1.Quaid I Azam Univ, Dept Plant Sci, Islamabad 45320, Pakistan 2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Shah, Syed Nasar,Ahmad, Mushtaq,Zafar, Muhammad,et al. A light and scanning electron microscopic diagnosis of leaf epidermal morphology and its systematic implications in Dryopteridaceae: Investigating 12 Pakistani taxa[J]. MICRON,2018,111:36-49.
APA	Shah, Syed Nasar.,Ahmad, Mushtaq.,Zafar, Muhammad.,Malik, Khafsa.,Rashid, Neelam.,...&Ali, Maroof.(2018).A light and scanning electron microscopic diagnosis of leaf epidermal morphology and its systematic implications in Dryopteridaceae: Investigating 12 Pakistani taxa.MICRON,111,36-49.
MLA	Shah, Syed Nasar,et al."A light and scanning electron microscopic diagnosis of leaf epidermal morphology and its systematic implications in Dryopteridaceae: Investigating 12 Pakistani taxa".MICRON 111(2018):36-49.