Photoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.

Submergence is a common type of environmental stress for plants. It hampers survival and decreases crop yield, mainly by inhibiting plant photosynthesis. The inhibition of photosynthesis and photochemical efficiency by submergence is primarily due to leaf senescence and excess excitation energy, cau...

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Autores principales:	Xingli Fan, Zishan Zhang, Huiyuan Gao, Cheng Yang, Meijun Liu, Yuting Li, Pengmin Li
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/33cc6027913e4832acbb757e2dc37a26
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spelling	oai:doaj.org-article:33cc6027913e4832acbb757e2dc37a262021-11-18T08:32:00ZPhotoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.1932-620310.1371/journal.pone.0089067https://doaj.org/article/33cc6027913e4832acbb757e2dc37a262014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24586508/?tool=EBIhttps://doaj.org/toc/1932-6203Submergence is a common type of environmental stress for plants. It hampers survival and decreases crop yield, mainly by inhibiting plant photosynthesis. The inhibition of photosynthesis and photochemical efficiency by submergence is primarily due to leaf senescence and excess excitation energy, caused by signals from hypoxic roots and inhibition of gas exchange, respectively. However, the influence of mere leaf-submergence on the photosynthetic apparatus is currently unknown. Therefore, we studied the photosynthetic apparatus in detached leaves from four plant species under dark-submergence treatment (DST), without influence from roots and light. Results showed that the donor and acceptor sides, the reaction center of photosystem II (PSII) and photosystem I (PSI) in leaves were significantly damaged after 36 h of DST. This is a photoinhibition-like phenomenon similar to the photoinhibition induced by high light, as further indicated by the degradation of PsaA and D1, the core proteins of PSI and PSII. In contrast to previous research, the chlorophyll content remained unchanged and the H2O2 concentration did not increase in the leaves, implying that the damage to the photosynthetic apparatus was not caused by senescence or over-accumulation of reactive oxygen species (ROS). DST-induced damage to the photosynthetic apparatus was aggravated by increasing treatment temperature. This type of damage also occurred in the anaerobic environment (N2) without water, and could be eliminated or restored by supplying air to the water during or after DST. Our results demonstrate that DST-induced damage was caused by the hypoxic environment. The mechanism by which DST induces the photoinhibition-like damage is discussed below.Xingli FanZishan ZhangHuiyuan GaoCheng YangMeijun LiuYuting LiPengmin LiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 2, p e89067 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xingli Fan Zishan Zhang Huiyuan Gao Cheng Yang Meijun Liu Yuting Li Pengmin Li Photoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.
description	Submergence is a common type of environmental stress for plants. It hampers survival and decreases crop yield, mainly by inhibiting plant photosynthesis. The inhibition of photosynthesis and photochemical efficiency by submergence is primarily due to leaf senescence and excess excitation energy, caused by signals from hypoxic roots and inhibition of gas exchange, respectively. However, the influence of mere leaf-submergence on the photosynthetic apparatus is currently unknown. Therefore, we studied the photosynthetic apparatus in detached leaves from four plant species under dark-submergence treatment (DST), without influence from roots and light. Results showed that the donor and acceptor sides, the reaction center of photosystem II (PSII) and photosystem I (PSI) in leaves were significantly damaged after 36 h of DST. This is a photoinhibition-like phenomenon similar to the photoinhibition induced by high light, as further indicated by the degradation of PsaA and D1, the core proteins of PSI and PSII. In contrast to previous research, the chlorophyll content remained unchanged and the H2O2 concentration did not increase in the leaves, implying that the damage to the photosynthetic apparatus was not caused by senescence or over-accumulation of reactive oxygen species (ROS). DST-induced damage to the photosynthetic apparatus was aggravated by increasing treatment temperature. This type of damage also occurred in the anaerobic environment (N2) without water, and could be eliminated or restored by supplying air to the water during or after DST. Our results demonstrate that DST-induced damage was caused by the hypoxic environment. The mechanism by which DST induces the photoinhibition-like damage is discussed below.
format	article
author	Xingli Fan Zishan Zhang Huiyuan Gao Cheng Yang Meijun Liu Yuting Li Pengmin Li
author_facet	Xingli Fan Zishan Zhang Huiyuan Gao Cheng Yang Meijun Liu Yuting Li Pengmin Li
author_sort	Xingli Fan
title	Photoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.
title_short	Photoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.
title_full	Photoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.
title_fullStr	Photoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.
title_full_unstemmed	Photoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.
title_sort	photoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/33cc6027913e4832acbb757e2dc37a26
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Photoinhibition-like damage to the photosynthetic apparatus in plant leaves induced by submergence treatment in the dark.

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