干旱区生态环境知识资源中心(Arid): Modulation of physiological plasticity through structural and functional modifications in Stipagrostis plumosa L. for adaptability to hyperarid environments

Arid

DOI	10.55730/1300-008X.2721
	Modulation of physiological plasticity through structural and functional modifications in Stipagrostis plumosa L. for adaptability to hyperarid environments
	Bibi, Safura; Ahmad, Muhammad Sajid Aqeel; Hameed, Mansoor; Alvi, Ambreen Khadija
通讯作者	Bibi, S
来源期刊	TURKISH JOURNAL OF BOTANY
ISSN	1300-008X
EISSN	1303-6106
出版年	2022
卷号	46 期号:5 页码:435-458
英文摘要	The role of morpho-physiological attributes along with the antioxidant potential of Stipagrostis plumosa L. populations collected from arid regions in adaptability to aridity was evaluated. Root to shoot length, chlorophyll, carotenoids, and organic osmolytes (total free amino acids, total soluble proteins, glycinebetaine, and proline) increased with more activities of antioxidant enzymes (APX, CAT, POD, and SOD). Root and shoot fresh:dry weight ratio and leaf area decreased with increasing dryness ratio (D: 8.40-30.49) and decreasing precipitation (519 mm to 143 mm). Hyperarid populations [Noorpur Thal - NpT (D: 10.90; P: 400 mm) and Cholistan - Cho (D:30.49; P: 143 mm)] relied on reduced leaf area and plant biomass, longer roots, more activities of antioxidant enzymes with higher accumulation of organic osmolytes, and better compartmentation of ions in root and shoot. Root and leaf epidermal thicknesses, epidermal cell area, the proportion of cortical parenchyma, metaxylem cell area, abaxial stomatal density and area reduced significantly while stem epidermis thickness, cortical cell area, and metaxylem cell area increased in relatively less arid populations [Neela Wahn-NeW (D: 8.40; P: 519 mm) and Kallar Kahar-KKr (D: 8.99; P: 485 mm)]. In conclusion, survival of S. plumosa under water deficit was directly linked to the plasticity in morpho-physiological and anatomical traits such as epidermal hairs, thick leaves, intense sclerification in roots epidermis, cortex and endodermis, and vascular bundle. These traits not only accounted for the movement of water and solutes but also help conserve water and provided mechanical strength for survival in hyperarid environments.
英文关键词	Osmolytes antioxidants root anatomy adaptations hyperarid environments
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000889575400002
WOS关键词	LEAF-AREA ; TRAITS ; STRESS ; PLANTS ; DESERT ; GROWTH ; ASSAY
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394750
推荐引用方式 GB/T 7714	Bibi, Safura,Ahmad, Muhammad Sajid Aqeel,Hameed, Mansoor,et al. Modulation of physiological plasticity through structural and functional modifications in Stipagrostis plumosa L. for adaptability to hyperarid environments[J],2022,46(5):435-458.
APA	Bibi, Safura,Ahmad, Muhammad Sajid Aqeel,Hameed, Mansoor,&Alvi, Ambreen Khadija.(2022).Modulation of physiological plasticity through structural and functional modifications in Stipagrostis plumosa L. for adaptability to hyperarid environments.TURKISH JOURNAL OF BOTANY,46(5),435-458.
MLA	Bibi, Safura,et al."Modulation of physiological plasticity through structural and functional modifications in Stipagrostis plumosa L. for adaptability to hyperarid environments".TURKISH JOURNAL OF BOTANY 46.5(2022):435-458.