干旱区生态环境知识资源中心(Arid): Exogenous Melatonin Modulates the Physiological and Biochemical Mechanisms of Drought Tolerance in Tartary Buckwheat (Fagopyrum tataricum(L.) Gaertn)

Arid

DOI	10.3390/molecules25122828
	Exogenous Melatonin Modulates the Physiological and Biochemical Mechanisms of Drought Tolerance in Tartary Buckwheat (Fagopyrum tataricum(L.) Gaertn)
	Hossain, Md. Shakhawat 1; Li, Jing 1; Sikdar, Ashim 2,3; Hasanuzzaman, Mirza 4; Uzizerimana, Ferdinand 1; Muhammad, Izhar 1; Yuan, Yuhao 1; Zhang, Chengjin 1; Wang, Chenyang 1; Feng, Baili 1
通讯作者	Feng, Baili
来源期刊	MOLECULES
EISSN	1420-3049
出版年	2020
卷号	25 期号:12
英文摘要	Tartary buckwheat is one of the nutritious minor cereals and is grown in high-cold mountainous areas of arid and semi-arid zones where drought is a common phenomenon, potentially reducing the growth and yield. Melatonin, which is an amphiphilic low molecular weight compound, has been proven to exert significant effects in plants, under abiotic stresses, but its role in the Tartary buckwheat under drought stress remains unexplored. We evaluated the influence of melatonin supplementation on plant morphology and different physiological activities, to enhance tolerance to posed drought stress by scavenging reactive oxygen species (ROS) and alleviating lipid peroxidation. Drought stress decreased the plant growth and biomass production compared to the control. Drought also decreased Chl a, b, and the Fv/Fm ratio by 54%, 70%, and 8%, respectively, which was associated with the disorganized stomatal properties. Under drought stress, H2O2, O-2(center dot-), and malondialdehyde (MDA) contents increased by 2.30, 2.43, and 2.22-folds, respectively, which caused oxidative stress. In contrast, proline and soluble sugar content were increased by 84% and 39%, respectively. However, exogenous melatonin (100 mu M) could improve plant growth by preventing ROS-induced oxidative damage by increasing photosynthesis, enzymatic antioxidants (superoxide dismutase, peroxidase, catalase, and ascorbate peroxidase), secondary metabolites like phenylalanine ammonialyase, phenolics, and flavonoids, total antioxidant scavenging (free radical DPPH scavenging), and maintaining relative water content and osmoregulation substances under water stress. Therefore, our study suggested that exogenous melatonin could accelerate drought resistance by enhancing photosynthesis and antioxidant defense in Tartary buckwheat plants.
英文关键词	tartary buckwheat drought stress exogenous melatonin antioxidant activity secondary metabolites reactive oxygen species drought tolerance
类型	Article
语种	英语
国家	Peoples R China ; Bangladesh
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000550246900001
WOS关键词	OXIDATIVE STRESS ; LEAF ANATOMY ; ANTIOXIDANT ; PEROXIDASE ; PHOTOSYNTHESIS ; ACCUMULATION ; METABOLITES ; RESPONSES ; SUGARS ; COLD
WOS类目	Biochemistry & Molecular Biology ; Chemistry, Multidisciplinary
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319703
作者单位	1.Northwest A&F Univ, Coll Agron, Yangling 712100, Shaanxi, Peoples R China; 2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; 3.Sylhet Agr Univ, Dept Agroforestry & Environm Sci, Sylhet 3100, Bangladesh; 4.Sher E Bangla Agr Univ, Fac Agr, Dept Agron, Dhaka 1207, Bangladesh
推荐引用方式 GB/T 7714	Hossain, Md. Shakhawat,Li, Jing,Sikdar, Ashim,et al. Exogenous Melatonin Modulates the Physiological and Biochemical Mechanisms of Drought Tolerance in Tartary Buckwheat (Fagopyrum tataricum(L.) Gaertn)[J]. 西北农林科技大学,2020,25(12).
APA	Hossain, Md. Shakhawat.,Li, Jing.,Sikdar, Ashim.,Hasanuzzaman, Mirza.,Uzizerimana, Ferdinand.,...&Feng, Baili.(2020).Exogenous Melatonin Modulates the Physiological and Biochemical Mechanisms of Drought Tolerance in Tartary Buckwheat (Fagopyrum tataricum(L.) Gaertn).MOLECULES,25(12).
MLA	Hossain, Md. Shakhawat,et al."Exogenous Melatonin Modulates the Physiological and Biochemical Mechanisms of Drought Tolerance in Tartary Buckwheat (Fagopyrum tataricum(L.) Gaertn)".MOLECULES 25.12(2020).