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Exogenous Calcium Alleviates Nocturnal Chilling-Induced Feedback Inhibition of Photosynthesis by Improving Sink Demand in Peanut (Arachis hypogaea)

Arachis hypogaea (peanut) is a globally important oilseed crop with high nutritional value. However, upon exposure to overnight chilling stress, it shows poor growth and seedling necrosis in many cultivation areas worldwide. Calcium (Ca(2+)) enhances chilling resistance in various plant species. We...

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Autores principales: Wu, Di, Liu, Yifei, Pang, Jiayin, Yong, Jean Wan Hong, Chen, Yinglong, Bai, Chunming, Han, Xiaori, Liu, Xinyue, Sun, Zhiyu, Zhang, Siwei, Sheng, Jing, Li, Tianlai, Siddique, Kadambot H.M., Lambers, Hans
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7779555/
https://www.ncbi.nlm.nih.gov/pubmed/33408732
http://dx.doi.org/10.3389/fpls.2020.607029
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author Wu, Di
Liu, Yifei
Pang, Jiayin
Yong, Jean Wan Hong
Chen, Yinglong
Bai, Chunming
Han, Xiaori
Liu, Xinyue
Sun, Zhiyu
Zhang, Siwei
Sheng, Jing
Li, Tianlai
Siddique, Kadambot H.M.
Lambers, Hans
author_facet Wu, Di
Liu, Yifei
Pang, Jiayin
Yong, Jean Wan Hong
Chen, Yinglong
Bai, Chunming
Han, Xiaori
Liu, Xinyue
Sun, Zhiyu
Zhang, Siwei
Sheng, Jing
Li, Tianlai
Siddique, Kadambot H.M.
Lambers, Hans
author_sort Wu, Di
collection PubMed
description Arachis hypogaea (peanut) is a globally important oilseed crop with high nutritional value. However, upon exposure to overnight chilling stress, it shows poor growth and seedling necrosis in many cultivation areas worldwide. Calcium (Ca(2+)) enhances chilling resistance in various plant species. We undertook a pot experiment to investigate the effects of exogenous Ca(2+) and a calmodulin (CaM) inhibitor on growth and photosynthetic characteristics of peanut exposed to low night temperature (LNT) stress following warm sunny days. The LNT stress reduced growth, leaf extension, biomass accumulation, gas exchange rates, and photosynthetic electron transport rates. Following LNT stress, we observed larger starch grains and a concomitant increase in nonstructural carbohydrates and hydrogen peroxide (H(2)O(2)) concentrations. The LNT stress further induced photoinhibition and caused structural damage to the chloroplast grana. Exogenous Ca(2+) enhanced plant growth following LNT stress, possibly by allowing continued export of carbohydrates from leaves. Foliar Ca(2+) likely alleviated the nocturnal chilling-dependent feedback limitation on photosynthesis in the daytime by increasing sink demand. The foliar Ca(2+) pretreatment protected the photosystems from photoinhibition by facilitating cyclic electron flow (CEF) and decreasing the proton gradient (ΔpH) across thylakoid membranes during LNT stress. Foliar application of a CaM inhibitor increased the negative impact of LNT stress on photosynthetic processes, confirming that Ca(2+)–CaM played an important role in alleviating photosynthetic inhibition due to the overnight chilling-dependent feedback.
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spelling pubmed-77795552021-01-05 Exogenous Calcium Alleviates Nocturnal Chilling-Induced Feedback Inhibition of Photosynthesis by Improving Sink Demand in Peanut (Arachis hypogaea) Wu, Di Liu, Yifei Pang, Jiayin Yong, Jean Wan Hong Chen, Yinglong Bai, Chunming Han, Xiaori Liu, Xinyue Sun, Zhiyu Zhang, Siwei Sheng, Jing Li, Tianlai Siddique, Kadambot H.M. Lambers, Hans Front Plant Sci Plant Science Arachis hypogaea (peanut) is a globally important oilseed crop with high nutritional value. However, upon exposure to overnight chilling stress, it shows poor growth and seedling necrosis in many cultivation areas worldwide. Calcium (Ca(2+)) enhances chilling resistance in various plant species. We undertook a pot experiment to investigate the effects of exogenous Ca(2+) and a calmodulin (CaM) inhibitor on growth and photosynthetic characteristics of peanut exposed to low night temperature (LNT) stress following warm sunny days. The LNT stress reduced growth, leaf extension, biomass accumulation, gas exchange rates, and photosynthetic electron transport rates. Following LNT stress, we observed larger starch grains and a concomitant increase in nonstructural carbohydrates and hydrogen peroxide (H(2)O(2)) concentrations. The LNT stress further induced photoinhibition and caused structural damage to the chloroplast grana. Exogenous Ca(2+) enhanced plant growth following LNT stress, possibly by allowing continued export of carbohydrates from leaves. Foliar Ca(2+) likely alleviated the nocturnal chilling-dependent feedback limitation on photosynthesis in the daytime by increasing sink demand. The foliar Ca(2+) pretreatment protected the photosystems from photoinhibition by facilitating cyclic electron flow (CEF) and decreasing the proton gradient (ΔpH) across thylakoid membranes during LNT stress. Foliar application of a CaM inhibitor increased the negative impact of LNT stress on photosynthetic processes, confirming that Ca(2+)–CaM played an important role in alleviating photosynthetic inhibition due to the overnight chilling-dependent feedback. Frontiers Media S.A. 2020-12-21 /pmc/articles/PMC7779555/ /pubmed/33408732 http://dx.doi.org/10.3389/fpls.2020.607029 Text en Copyright © 2020 Wu, Liu, Pang, Yong, Chen, Bai, Han, Liu, Sun, Zhang, Sheng, Li, Siddique and Lambers. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Wu, Di
Liu, Yifei
Pang, Jiayin
Yong, Jean Wan Hong
Chen, Yinglong
Bai, Chunming
Han, Xiaori
Liu, Xinyue
Sun, Zhiyu
Zhang, Siwei
Sheng, Jing
Li, Tianlai
Siddique, Kadambot H.M.
Lambers, Hans
Exogenous Calcium Alleviates Nocturnal Chilling-Induced Feedback Inhibition of Photosynthesis by Improving Sink Demand in Peanut (Arachis hypogaea)
title Exogenous Calcium Alleviates Nocturnal Chilling-Induced Feedback Inhibition of Photosynthesis by Improving Sink Demand in Peanut (Arachis hypogaea)
title_full Exogenous Calcium Alleviates Nocturnal Chilling-Induced Feedback Inhibition of Photosynthesis by Improving Sink Demand in Peanut (Arachis hypogaea)
title_fullStr Exogenous Calcium Alleviates Nocturnal Chilling-Induced Feedback Inhibition of Photosynthesis by Improving Sink Demand in Peanut (Arachis hypogaea)
title_full_unstemmed Exogenous Calcium Alleviates Nocturnal Chilling-Induced Feedback Inhibition of Photosynthesis by Improving Sink Demand in Peanut (Arachis hypogaea)
title_short Exogenous Calcium Alleviates Nocturnal Chilling-Induced Feedback Inhibition of Photosynthesis by Improving Sink Demand in Peanut (Arachis hypogaea)
title_sort exogenous calcium alleviates nocturnal chilling-induced feedback inhibition of photosynthesis by improving sink demand in peanut (arachis hypogaea)
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7779555/
https://www.ncbi.nlm.nih.gov/pubmed/33408732
http://dx.doi.org/10.3389/fpls.2020.607029
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