Nitrogen Starvation Impacts the Photosynthetic Performance of Porphyridium cruentum as Revealed by Chlorophyll a Fluorescence

Abstract Nitrogen is one of the most important nutrients needed for plants and algae to survive, and the photosynthetic ability of algae is related to nitrogen abundance. Red algae are unique photosynthetic eukaryotic organisms in the evolution of algae, as they contain phycobilisomes (PBSs) on thei...

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Autores principales:	Long-Sheng Zhao, Kang Li, Qian-Min Wang, Xiao-Yan Song, Hai-Nan Su, Bin-Bin Xie, Xi-Ying Zhang, Feng Huang, Xiu-Lan Chen, Bai-Cheng Zhou, Yu-Zhong Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/938d16bca7a74c1f88921baca4fa9932
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spelling	oai:doaj.org-article:938d16bca7a74c1f88921baca4fa99322021-12-02T15:18:52ZNitrogen Starvation Impacts the Photosynthetic Performance of Porphyridium cruentum as Revealed by Chlorophyll a Fluorescence10.1038/s41598-017-08428-62045-2322https://doaj.org/article/938d16bca7a74c1f88921baca4fa99322017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08428-6https://doaj.org/toc/2045-2322Abstract Nitrogen is one of the most important nutrients needed for plants and algae to survive, and the photosynthetic ability of algae is related to nitrogen abundance. Red algae are unique photosynthetic eukaryotic organisms in the evolution of algae, as they contain phycobilisomes (PBSs) on their thylakoid membranes. In this report, the in vivo chlorophyll (Chl) a fluorescence kinetics of nitrogen-starved Porphyridium cruentum were analyzed to determine the effects of nitrogen deficiency on photosynthetic performance using a multi-color pulse amplitude modulation (PAM) chlorophyll fluorometer. Due to nitrogen starvation, the photochemical efficiency of PSII and the activity of PSII reaction centers (RCs) decreased, and photoinhibition of PSII occurred. The water-splitting system on the donor side of PSII was seriously impacted by nitrogen deficiency, leading to the inactivation of the oxygen-evolving complex (OEC) and decreased light energy conversion efficiency. In nitrogen-starved cells, a higher proportion of energy was used for photochemical reactions, and thermal dissipation was reduced, as shown by qP and qN. The ability of nitrogen-starved cells to tolerate and resist high photon flux densities was weakened. Our results showed that the photosynthetic performance of P. cruentum was severely impacted by nitrogen deficiency.Long-Sheng ZhaoKang LiQian-Min WangXiao-Yan SongHai-Nan SuBin-Bin XieXi-Ying ZhangFeng HuangXiu-Lan ChenBai-Cheng ZhouYu-Zhong ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Long-Sheng Zhao Kang Li Qian-Min Wang Xiao-Yan Song Hai-Nan Su Bin-Bin Xie Xi-Ying Zhang Feng Huang Xiu-Lan Chen Bai-Cheng Zhou Yu-Zhong Zhang Nitrogen Starvation Impacts the Photosynthetic Performance of Porphyridium cruentum as Revealed by Chlorophyll a Fluorescence
description	Abstract Nitrogen is one of the most important nutrients needed for plants and algae to survive, and the photosynthetic ability of algae is related to nitrogen abundance. Red algae are unique photosynthetic eukaryotic organisms in the evolution of algae, as they contain phycobilisomes (PBSs) on their thylakoid membranes. In this report, the in vivo chlorophyll (Chl) a fluorescence kinetics of nitrogen-starved Porphyridium cruentum were analyzed to determine the effects of nitrogen deficiency on photosynthetic performance using a multi-color pulse amplitude modulation (PAM) chlorophyll fluorometer. Due to nitrogen starvation, the photochemical efficiency of PSII and the activity of PSII reaction centers (RCs) decreased, and photoinhibition of PSII occurred. The water-splitting system on the donor side of PSII was seriously impacted by nitrogen deficiency, leading to the inactivation of the oxygen-evolving complex (OEC) and decreased light energy conversion efficiency. In nitrogen-starved cells, a higher proportion of energy was used for photochemical reactions, and thermal dissipation was reduced, as shown by qP and qN. The ability of nitrogen-starved cells to tolerate and resist high photon flux densities was weakened. Our results showed that the photosynthetic performance of P. cruentum was severely impacted by nitrogen deficiency.
format	article
author	Long-Sheng Zhao Kang Li Qian-Min Wang Xiao-Yan Song Hai-Nan Su Bin-Bin Xie Xi-Ying Zhang Feng Huang Xiu-Lan Chen Bai-Cheng Zhou Yu-Zhong Zhang
author_facet	Long-Sheng Zhao Kang Li Qian-Min Wang Xiao-Yan Song Hai-Nan Su Bin-Bin Xie Xi-Ying Zhang Feng Huang Xiu-Lan Chen Bai-Cheng Zhou Yu-Zhong Zhang
author_sort	Long-Sheng Zhao
title	Nitrogen Starvation Impacts the Photosynthetic Performance of Porphyridium cruentum as Revealed by Chlorophyll a Fluorescence
title_short	Nitrogen Starvation Impacts the Photosynthetic Performance of Porphyridium cruentum as Revealed by Chlorophyll a Fluorescence
title_full	Nitrogen Starvation Impacts the Photosynthetic Performance of Porphyridium cruentum as Revealed by Chlorophyll a Fluorescence
title_fullStr	Nitrogen Starvation Impacts the Photosynthetic Performance of Porphyridium cruentum as Revealed by Chlorophyll a Fluorescence
title_full_unstemmed	Nitrogen Starvation Impacts the Photosynthetic Performance of Porphyridium cruentum as Revealed by Chlorophyll a Fluorescence
title_sort	nitrogen starvation impacts the photosynthetic performance of porphyridium cruentum as revealed by chlorophyll a fluorescence
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/938d16bca7a74c1f88921baca4fa9932
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Nitrogen Starvation Impacts the Photosynthetic Performance of Porphyridium cruentum as Revealed by Chlorophyll a Fluorescence

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