Exogenous melatonin protects alfalfa (Medicago sativa L.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency

Abstracts: Drought stress is a severe global environmental concern for the growth and development of alfalfa (Medicago sativa L.), which is crucial for agricultural sustainability owing to its high feed value and economic prospects. Melatonin (MT) has emerged as a multifaceted biomolecule that plays...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Momi Roy, Junpeng Niu, Annie Irshad, Hafiz Abdul Kareem, Mahmood Ul Hassan, Nan Xu, Xin Sui, Zhipeng Guo, Aduragbemi Amo, Quanzhen Wang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Alfalfa Melatonin Antioxidant enzymes Gas exchange Chlorophyll Plant growth regulators Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/9cc8aec69ff74289a13b81fb0f38e1db
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:9cc8aec69ff74289a13b81fb0f38e1db
record_format	dspace
spelling	oai:doaj.org-article:9cc8aec69ff74289a13b81fb0f38e1db2021-12-04T04:36:41ZExogenous melatonin protects alfalfa (Medicago sativa L.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency2667-064X10.1016/j.stress.2021.100044https://doaj.org/article/9cc8aec69ff74289a13b81fb0f38e1db2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2667064X21000439https://doaj.org/toc/2667-064XAbstracts: Drought stress is a severe global environmental concern for the growth and development of alfalfa (Medicago sativa L.), which is crucial for agricultural sustainability owing to its high feed value and economic prospects. Melatonin (MT) has emerged as a multifaceted biomolecule that plays a fundamental role in regulating plants' multiple environmental stresses. However, the significant effect of exogenous MT on drought stress tolerance in the alfalfa forage crops remains inexpressible. We investigated the effects of foliar-sprayed melatonin at different doses (50, 100, 200 μM) on alfalfa seedlings' growth and physiological responses under drought stress. Our results showed that drought stress reduced morphological growth attributes (by 12 to 54%), gas exchange parameters (by 37 to 88%), photosynthetic pigments (Chl a, and Chl b contents by 29%, and 40%), mineral contents, and increased lipid peroxidation (by 69%) and accumulation of reactive oxygen species (ROS) in alfalfa plants. In contrast, exogenous foliar application of MT significantly revived growth characteristics, boosted antioxidant enzyme activities, improved photosynthetic performance, decreased ROS-induced oxidative damage by increasing plant mineral elements, and lowered lipid peroxidation in plants under drought stress. In addition, MT also stimulated the accumulation of total soluble sugar and proline content by 48% and by 75% respectively, which were positively associated with improved leaf water status in drought-stressed plants. Meanwhile, our findings revealed that the highest efficiency was achieved at 100 μM melatonin. In conclusion, these findings bring a new perspective on melatonin-mediated drought stress tolerance and provide a foundational understanding of alfalfa's future cultivation in drought-prone regions globally.Momi RoyJunpeng NiuAnnie IrshadHafiz Abdul KareemMahmood Ul HassanNan XuXin SuiZhipeng GuoAduragbemi AmoQuanzhen WangElsevierarticleAlfalfaMelatoninAntioxidant enzymesGas exchangeChlorophyllPlant growth regulatorsPlant ecologyQK900-989ENPlant Stress, Vol 2, Iss , Pp 100044- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Alfalfa Melatonin Antioxidant enzymes Gas exchange Chlorophyll Plant growth regulators Plant ecology QK900-989
spellingShingle	Alfalfa Melatonin Antioxidant enzymes Gas exchange Chlorophyll Plant growth regulators Plant ecology QK900-989 Momi Roy Junpeng Niu Annie Irshad Hafiz Abdul Kareem Mahmood Ul Hassan Nan Xu Xin Sui Zhipeng Guo Aduragbemi Amo Quanzhen Wang Exogenous melatonin protects alfalfa (Medicago sativa L.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency
description	Abstracts: Drought stress is a severe global environmental concern for the growth and development of alfalfa (Medicago sativa L.), which is crucial for agricultural sustainability owing to its high feed value and economic prospects. Melatonin (MT) has emerged as a multifaceted biomolecule that plays a fundamental role in regulating plants' multiple environmental stresses. However, the significant effect of exogenous MT on drought stress tolerance in the alfalfa forage crops remains inexpressible. We investigated the effects of foliar-sprayed melatonin at different doses (50, 100, 200 μM) on alfalfa seedlings' growth and physiological responses under drought stress. Our results showed that drought stress reduced morphological growth attributes (by 12 to 54%), gas exchange parameters (by 37 to 88%), photosynthetic pigments (Chl a, and Chl b contents by 29%, and 40%), mineral contents, and increased lipid peroxidation (by 69%) and accumulation of reactive oxygen species (ROS) in alfalfa plants. In contrast, exogenous foliar application of MT significantly revived growth characteristics, boosted antioxidant enzyme activities, improved photosynthetic performance, decreased ROS-induced oxidative damage by increasing plant mineral elements, and lowered lipid peroxidation in plants under drought stress. In addition, MT also stimulated the accumulation of total soluble sugar and proline content by 48% and by 75% respectively, which were positively associated with improved leaf water status in drought-stressed plants. Meanwhile, our findings revealed that the highest efficiency was achieved at 100 μM melatonin. In conclusion, these findings bring a new perspective on melatonin-mediated drought stress tolerance and provide a foundational understanding of alfalfa's future cultivation in drought-prone regions globally.
format	article
author	Momi Roy Junpeng Niu Annie Irshad Hafiz Abdul Kareem Mahmood Ul Hassan Nan Xu Xin Sui Zhipeng Guo Aduragbemi Amo Quanzhen Wang
author_facet	Momi Roy Junpeng Niu Annie Irshad Hafiz Abdul Kareem Mahmood Ul Hassan Nan Xu Xin Sui Zhipeng Guo Aduragbemi Amo Quanzhen Wang
author_sort	Momi Roy
title	Exogenous melatonin protects alfalfa (Medicago sativa L.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency
title_short	Exogenous melatonin protects alfalfa (Medicago sativa L.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency
title_full	Exogenous melatonin protects alfalfa (Medicago sativa L.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency
title_fullStr	Exogenous melatonin protects alfalfa (Medicago sativa L.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency
title_full_unstemmed	Exogenous melatonin protects alfalfa (Medicago sativa L.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency
title_sort	exogenous melatonin protects alfalfa (medicago sativa l.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/9cc8aec69ff74289a13b81fb0f38e1db
work_keys_str_mv	AT momiroy exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency AT junpengniu exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency AT annieirshad exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency AT hafizabdulkareem exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency AT mahmoodulhassan exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency AT nanxu exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency AT xinsui exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency AT zhipengguo exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency AT aduragbemiamo exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency AT quanzhenwang exogenousmelatoninprotectsalfalfamedicagosativalseedlingsfromdroughtinduceddamagebymodulatingreactiveoxygenspeciesmetabolismmineralbalanceandphotosyntheticefficiency
_version_	1718372929695121408

Exogenous melatonin protects alfalfa (Medicago sativa L.) seedlings from drought-induced damage by modulating reactive oxygen species metabolism, mineral balance and photosynthetic efficiency

Ejemplares similares