干旱区生态环境知识资源中心(Arid): Melatonin-Mediated Alleviation of Soil Salinity Stress by Modulation of Redox Reactions and Phytochemical Status in Guar (Cyamopsis tetragonoloba L.)

Arid

DOI	10.1007/s00344-022-10740-z
	Melatonin-Mediated Alleviation of Soil Salinity Stress by Modulation of Redox Reactions and Phytochemical Status in Guar (Cyamopsis tetragonoloba L.)
	Meftahizadeh, Heidar; Baath, Gurjinder S.; Saini, Rupinder K.; Falakian, Mahdieh; Hatami, Mehrnaz
通讯作者	Meftahizadeh, H
来源期刊	JOURNAL OF PLANT GROWTH REGULATION
ISSN	0721-7595
EISSN	1435-8107
出版年	2023
卷号	42 期号:8 页码:4851-4869
英文摘要	Salinity is one of the major environmental problems threatening crops production, especially in semiarid and arid areas of the world. Melatonin, a growth regulator, has recently been receiving significant attention for its critical role in improving plant salt tolerance. In this experiment, a 2-year field trial was conducted to examine the influence of four exogenous melatonin application rates (0, 100, 200, and 400 mu mol L-1) on various physiological, biochemical, and yield characteristics of guar plants grown under four different NaCl salinity levels (0, 5, 10, and 15 dS m(-1)) conditions. According to the results, severe salinity stress caused reductions in leaf relative water content (RWC), total chlorophyll, carbohydrates, and phenol contents (by 9.8, 13.6, 42.1, and 25.3%), and stimulated proline level, superoxide dismutase (SOD), catalase (CAT), peroxidase (POX), ascorbate peroxidase (APX), and glutathione reductase (GR) activities (by 54.8, 60.6, 25.1, 51.9, 51.2, and 60.5%) in guar leaves, respectively. In addition, photosynthesis (P-n) and transpiration (T-r) values showed a significant decline with increasing salinity levels up to 45.9 and 77.2%, respectively. However, exogenous melatonin application, particularly at 200 mu mol L-1, relieved physiological impacts of salt stress through increased proline (6-80%), phenol (8-27%), and chlorophyll (7-16%) contents and improved hydraulic functions in guar plants. Furthermore, melatonin-applied plants showed the greatest improvement in yield characteristics including biomass (14-106%), root length (8-13%), seeds per plants (8-36%), and seed gum (11-23%), and maintained higher viscosity and contents of protein and fat in the guar gum relative to untreated plants across four salinity levels. These findings suggested that melatonin improves plant resistance to salinity stress in guar and hence could be utilized to sustain crop yields in various regions affected by soil salinity.
英文关键词	Guar NaCl stress Melatonin Antioxidant enzymes Carbohydrate Photosynthetic pigments Gum
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000843404500001
WOS关键词	ABIOTIC STRESS ; HYDROGEN-PEROXIDE ; OXIDATIVE STRESS ; SALT TOLERANCE ; PLANTS ; ANTIOXIDANT ; GROWTH ; SEEDLINGS ; MECHANISMS ; NITROGEN
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/2XILL650/397511
推荐引用方式 GB/T 7714	Meftahizadeh, Heidar,Baath, Gurjinder S.,Saini, Rupinder K.,et al. Melatonin-Mediated Alleviation of Soil Salinity Stress by Modulation of Redox Reactions and Phytochemical Status in Guar (Cyamopsis tetragonoloba L.)[J],2023,42(8):4851-4869.
APA	Meftahizadeh, Heidar,Baath, Gurjinder S.,Saini, Rupinder K.,Falakian, Mahdieh,&Hatami, Mehrnaz.(2023).Melatonin-Mediated Alleviation of Soil Salinity Stress by Modulation of Redox Reactions and Phytochemical Status in Guar (Cyamopsis tetragonoloba L.).JOURNAL OF PLANT GROWTH REGULATION,42(8),4851-4869.
MLA	Meftahizadeh, Heidar,et al."Melatonin-Mediated Alleviation of Soil Salinity Stress by Modulation of Redox Reactions and Phytochemical Status in Guar (Cyamopsis tetragonoloba L.)".JOURNAL OF PLANT GROWTH REGULATION 42.8(2023):4851-4869.