Physiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering

Abstract Drought resistance of psammophyte determines survival and growth, but their responses to drought are not well understood. We conducted a pot experiment to study how physiological characteristics respond to drought and rehydration. We found that watering to 60–65% of field capacity (the cont...

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Autores principales:	Juanli Chen, Xueyong Zhao, Yuqiang Li, Yongqing Luo, Yaqiu Zhang, Mei Liu, Yan Li
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/40516588840e423eb9996f8f84604b01
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spelling	oai:doaj.org-article:40516588840e423eb9996f8f84604b012021-12-02T17:26:49ZPhysiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering10.1038/s41598-021-98246-82045-2322https://doaj.org/article/40516588840e423eb9996f8f84604b012021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98246-8https://doaj.org/toc/2045-2322Abstract Drought resistance of psammophyte determines survival and growth, but their responses to drought are not well understood. We conducted a pot experiment to study how physiological characteristics respond to drought and rehydration. We found that watering to 60–65% of field capacity (the control) provided more water than was required by Agriophyllum squarrosum and its leaves became yellow and slightly wilted. The total chlorophyll content and Fm (maximum fluorescence after dark adaptation) in control were lower than in the drought treatment, and both decreased after rehydration. With increasing drought duration and intensity, the relative water content (RWC), chlorophyll content, Fm, and the quantum efficiency of photosystem II (Fv/Fm) of Setaria viridis decreased, but malondialdehyde and membrane permeability increased. During the late drought, the activities of three antioxidant enzymes in A. squarrosum increased to prevent membrane lipid peroxidation; for S. viridis, only peroxidase and superoxide dismutase activities increased. After rehydration, RWC of both species increased, but Fv/Fm of A. squarrosum and Fm of S. viridis did not recover under severe drought. Our research illustrated that A. squarrosum is better adapted to arid environment than S. viridis, but the high soil moisture content is not conducive to normal growth of A. squarrosum.Juanli ChenXueyong ZhaoYuqiang LiYongqing LuoYaqiu ZhangMei LiuYan LiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Juanli Chen Xueyong Zhao Yuqiang Li Yongqing Luo Yaqiu Zhang Mei Liu Yan Li Physiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering
description	Abstract Drought resistance of psammophyte determines survival and growth, but their responses to drought are not well understood. We conducted a pot experiment to study how physiological characteristics respond to drought and rehydration. We found that watering to 60–65% of field capacity (the control) provided more water than was required by Agriophyllum squarrosum and its leaves became yellow and slightly wilted. The total chlorophyll content and Fm (maximum fluorescence after dark adaptation) in control were lower than in the drought treatment, and both decreased after rehydration. With increasing drought duration and intensity, the relative water content (RWC), chlorophyll content, Fm, and the quantum efficiency of photosystem II (Fv/Fm) of Setaria viridis decreased, but malondialdehyde and membrane permeability increased. During the late drought, the activities of three antioxidant enzymes in A. squarrosum increased to prevent membrane lipid peroxidation; for S. viridis, only peroxidase and superoxide dismutase activities increased. After rehydration, RWC of both species increased, but Fv/Fm of A. squarrosum and Fm of S. viridis did not recover under severe drought. Our research illustrated that A. squarrosum is better adapted to arid environment than S. viridis, but the high soil moisture content is not conducive to normal growth of A. squarrosum.
format	article
author	Juanli Chen Xueyong Zhao Yuqiang Li Yongqing Luo Yaqiu Zhang Mei Liu Yan Li
author_facet	Juanli Chen Xueyong Zhao Yuqiang Li Yongqing Luo Yaqiu Zhang Mei Liu Yan Li
author_sort	Juanli Chen
title	Physiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering
title_short	Physiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering
title_full	Physiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering
title_fullStr	Physiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering
title_full_unstemmed	Physiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering
title_sort	physiological responses of agriophyllum squarrosum and setaria viridis to drought and re-watering
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/40516588840e423eb9996f8f84604b01
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Physiological responses of Agriophyllum squarrosum and Setaria viridis to drought and re-watering

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