干旱区生态环境知识资源中心(Arid): EVALUATION OF SALT AND DROUGHT TOLERANCES OF POPULUS TALASSICA ? POPULUS EUPHRATICA SEEDLINGS USING LEAF ANATOMICAL STRUCTURES AND PHYSIOLOGICAL PROCESSES

Arid

DOI	10.30848/PJB2023-4(4)
	EVALUATION OF SALT AND DROUGHT TOLERANCES OF POPULUS TALASSICA ? POPULUS EUPHRATICA SEEDLINGS USING LEAF ANATOMICAL STRUCTURES AND PHYSIOLOGICAL PROCESSES
	Sun, Yang; Liu, Ying; Su, Meng Xu; Han, Zhan Jiang; Shi, Jian Yin
通讯作者	Han, ZJ
来源期刊	PAKISTAN JOURNAL OF BOTANY
ISSN	0556-3321
EISSN	2070-3368
出版年	2023
卷号	55 期号:4 页码:1205-1214
英文摘要	The salt-and drought-tolerance levels of potted Populus talassica x Populus euphratica seedlings were studied under different NaCl concentrations and simulated natural drought conditions, with P. euphratica (male parent) and Populus pruinosa seedlings as controls. Compared with those of the controls, the leaves of P. talassica x P. euphratica began to thicken at low and medium NaCl concentrations (200-300 mmol/L), the relative conductivity and of malondialdehyde (MDA) content increased less, the cell membrane damage to P. talassicax P. euphratica was less, and the soluble substance (free proline, soluble sugar and soluble protein) contents increased significantly. The reactive oxygen species free radicals were removed by increasing the superoxide dismutase, peroxidase and catalase activities. At high NaCl concentrations (350-450 mmol/L) compared with lower NaCl concentrations, the leaves of P. talassica x P. euphratica were small and thick, the relative conductivity and MDA content increased significantly, the cell membrane damage was more serious, and the three antioxidant enzyme activity levels decreased significantly. The osmotic regulatory capability was improved by increasing the contents of three soluble substances. Under drought conditions compared with normal conditions, the leaf thickness of P. talassica x P. euphratica was basically unchanged, and the relative conductivity and MDA content increased significantly. The seedlings adapted to and resisted the drought environment by increasing the superoxide dismutase, peroxidase and catalase activities, as well as the osmotic regulator, such as proline, soluble sugar and soluble protein, contents. In the control experiment, the leaf anatomical results for the three tree species were basically consistent with the changes in physiological and biochemical indexes caused by a high saline or arid environment. A comprehensive evaluation of the salt and drought tolerance levels of P. talassica x P. euphratica, P. euphratica and P. pruinosa was performed using the fuzzy mathematics membership function method, which revealed that the salt and drought tolerance levels of the species were both: P. euphratica > P. talassica x P. euphratica > P. pruinosa. The P. talassica x P. euphratica seedlings showed strong salt and drought tolerance levels, making them suitable for planting in the saline and arid lands of the Tarim Basin.
英文关键词	Populus talassica ? Populus euphratica Anatomical structure Physiological response Salt tolerance Drought tolerance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000972097200001
WOS关键词	ADAPTIVE RESPONSES ; STRESS ; SALINITY
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/2XILL650/397949
推荐引用方式 GB/T 7714	Sun, Yang,Liu, Ying,Su, Meng Xu,et al. EVALUATION OF SALT AND DROUGHT TOLERANCES OF POPULUS TALASSICA ? POPULUS EUPHRATICA SEEDLINGS USING LEAF ANATOMICAL STRUCTURES AND PHYSIOLOGICAL PROCESSES[J],2023,55(4):1205-1214.
APA	Sun, Yang,Liu, Ying,Su, Meng Xu,Han, Zhan Jiang,&Shi, Jian Yin.(2023).EVALUATION OF SALT AND DROUGHT TOLERANCES OF POPULUS TALASSICA ? POPULUS EUPHRATICA SEEDLINGS USING LEAF ANATOMICAL STRUCTURES AND PHYSIOLOGICAL PROCESSES.PAKISTAN JOURNAL OF BOTANY,55(4),1205-1214.
MLA	Sun, Yang,et al."EVALUATION OF SALT AND DROUGHT TOLERANCES OF POPULUS TALASSICA ? POPULUS EUPHRATICA SEEDLINGS USING LEAF ANATOMICAL STRUCTURES AND PHYSIOLOGICAL PROCESSES".PAKISTAN JOURNAL OF BOTANY 55.4(2023):1205-1214.