Capability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought

Leaves play an important role in plant growth and development through photosynthesis and transpiration. Many studies have explored the effects of short-term drought stress on leaf water status; however, few studies have focused on the leaf water content capacity as an indicator of soil–plant water s...

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Autores principales:	Huailin Zhou, Guangsheng Zhou, Qijin He, Li Zhou, Yuhe Ji, Xiaomin Lv
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Eco-physiological threshold Leaf water content Maize Photosynthetic capacity Prolonged drought Soil available water content Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/c2596fffc1444b0faa543c239d60cd1f
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spelling	oai:doaj.org-article:c2596fffc1444b0faa543c239d60cd1f2021-12-01T04:45:25ZCapability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought1470-160X10.1016/j.ecolind.2021.107395https://doaj.org/article/c2596fffc1444b0faa543c239d60cd1f2021-05-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21000601https://doaj.org/toc/1470-160XLeaves play an important role in plant growth and development through photosynthesis and transpiration. Many studies have explored the effects of short-term drought stress on leaf water status; however, few studies have focused on the leaf water content capacity as an indicator of soil–plant water status during prolonged droughts. The results of a field experiment with various irrigation regimes that was conducted during two consecutive maize growing seasons from 2013 to 2014, indicated that the water content of the first fully expanded leaf (LWCtop1) was representative of the soil–plant water status with the development of drought. LWCtop1 was closely linked to the water condition of other leaves and different plant parts in response to progressive water stress. LWCtop1 shared a quadratic relationship with the photosynthetic rate (Pn), and Pn peaked when LWCtop1 approached 84.11% and decreased to zero when LWCtop1 dropped to 68.26%. Moreover, three stages (slow-fast-slow) were observed as leaf water content responded to soil drying, and two important threshold values (minimum: 70.86 ± 0.80%, maximum: 84.58 ± 1.10%) of the leaf water content were determined. The results of this study may provide a physiological and ecological basis for the identification and monitoring of crop drought.Huailin ZhouGuangsheng ZhouQijin HeLi ZhouYuhe JiXiaomin LvElsevierarticleEco-physiological thresholdLeaf water contentMaizePhotosynthetic capacityProlonged droughtSoil available water contentEcologyQH540-549.5ENEcological Indicators, Vol 124, Iss , Pp 107395- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Eco-physiological threshold Leaf water content Maize Photosynthetic capacity Prolonged drought Soil available water content Ecology QH540-549.5
spellingShingle	Eco-physiological threshold Leaf water content Maize Photosynthetic capacity Prolonged drought Soil available water content Ecology QH540-549.5 Huailin Zhou Guangsheng Zhou Qijin He Li Zhou Yuhe Ji Xiaomin Lv Capability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought
description	Leaves play an important role in plant growth and development through photosynthesis and transpiration. Many studies have explored the effects of short-term drought stress on leaf water status; however, few studies have focused on the leaf water content capacity as an indicator of soil–plant water status during prolonged droughts. The results of a field experiment with various irrigation regimes that was conducted during two consecutive maize growing seasons from 2013 to 2014, indicated that the water content of the first fully expanded leaf (LWCtop1) was representative of the soil–plant water status with the development of drought. LWCtop1 was closely linked to the water condition of other leaves and different plant parts in response to progressive water stress. LWCtop1 shared a quadratic relationship with the photosynthetic rate (Pn), and Pn peaked when LWCtop1 approached 84.11% and decreased to zero when LWCtop1 dropped to 68.26%. Moreover, three stages (slow-fast-slow) were observed as leaf water content responded to soil drying, and two important threshold values (minimum: 70.86 ± 0.80%, maximum: 84.58 ± 1.10%) of the leaf water content were determined. The results of this study may provide a physiological and ecological basis for the identification and monitoring of crop drought.
format	article
author	Huailin Zhou Guangsheng Zhou Qijin He Li Zhou Yuhe Ji Xiaomin Lv
author_facet	Huailin Zhou Guangsheng Zhou Qijin He Li Zhou Yuhe Ji Xiaomin Lv
author_sort	Huailin Zhou
title	Capability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought
title_short	Capability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought
title_full	Capability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought
title_fullStr	Capability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought
title_full_unstemmed	Capability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought
title_sort	capability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c2596fffc1444b0faa543c239d60cd1f
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Capability of leaf water content and its threshold values in reflection of soil–plant water status in maize during prolonged drought

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