Arid
DOI10.1016/j.flora.2018.11.003
Structural and functional modifications in a typical arid zone species Aristida adscensionis L. along altitudinal gradient
Fatima, Sana1; Hameed, Mansoor1; Ahmad, Farooq1; Ashraf, Muhammad2; Ahmad, Rashid3
通讯作者Hameed, Mansoor
来源期刊FLORA
ISSN0367-2530
EISSN1618-0585
出版年2018
卷号249页码:172-182
英文摘要

Aristida adscensionis L. is a widely distributed grass species that particularly invades Potohar region (arid/semi-arid conditions) of the country. Exploration of adaptive components in this grass in relation to altitudinal gradient is the first attempt. Plant samples were collected from 6 different altitudinal ranges, viz. 400, 600, 800, 1000, 1200 and 1400 m a.s.l. Morpho-anatomical and physiological features along altitudinal gradient varied significantly that showed phenotypic plasticity in this species to inhabit a variety of environmental conditions. Stomata at 400 m altitude were larger and rhomboid-shaped, which changed to narrowly elliptic at moderate elevations and circular at high elevations. Growth and biomass production were maximum at 800-1000 m a.s.l. along with most of the morpho-anatomical and physiological features like proportion of vascular tissue, nutrient uptake, and chlorophyll pigments. Xeromorphy was high in plants colonisng at 1200 m elevations, which was indicated by an intensive sclerification, increased amount of storage parenchyma, increased vascular bundle number, deeply grooved bulliform cells, and dense pubescence on adaxial leaf surface. Leaf succulence was the unique feature in plants inhabiting 1400 m elevation. Another prominent feature was the development of chlorenchyma inner to stem epidermis. All these features reflect the tolerance capacity of A. adsecnsionis against environmental adversaries like salinity, aridity and low temperatures of the Potohar region.


英文关键词Aerenchyma Chlorenchyma Phenotypic plasticity Pubescence Sclerification Succulence
类型Article
语种英语
国家Pakistan
收录类别SCI-E
WOS记录号WOS:000451064500020
WOS关键词ANATOMICAL CHARACTERISTICS ; SALT TOLERANCE ; CLIMATE-CHANGE ; SOIL ; DROUGHT ; GROWTH ; ELEVATION ; SUCCULENT ; LEAVES ; PLANTS
WOS类目Plant Sciences ; Ecology
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/209293
作者单位1.Univ Agr Faisalabad, Dept Bot, Faisalabad, Pakistan;
2.Univ Lahore, Inst Mol Biol & Biotechnol, Lahore, Pakistan;
3.Univ Agr Faisalabad, Dept Agron, Faisalabad, Pakistan
推荐引用方式
GB/T 7714
Fatima, Sana,Hameed, Mansoor,Ahmad, Farooq,et al. Structural and functional modifications in a typical arid zone species Aristida adscensionis L. along altitudinal gradient[J],2018,249:172-182.
APA Fatima, Sana,Hameed, Mansoor,Ahmad, Farooq,Ashraf, Muhammad,&Ahmad, Rashid.(2018).Structural and functional modifications in a typical arid zone species Aristida adscensionis L. along altitudinal gradient.FLORA,249,172-182.
MLA Fatima, Sana,et al."Structural and functional modifications in a typical arid zone species Aristida adscensionis L. along altitudinal gradient".FLORA 249(2018):172-182.
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