Long-Chain Saturated Fatty Acids, Palmitic and Stearic Acids, Enhance the Repair of Photosystem II

Free fatty acids (FFA) generated in cyanobacterial cells can be utilized for the biodiesel that is required for our sustainable future. The combination of FFA and strong light induces severe photoinhibition of photosystem II (PSII), which suppresses the production of FFA in cyanobacterial cells. In...

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Autores principales: Jimbo, Haruhiko, Takagi, Kensuke, Hirashima, Takashi, Nishiyama, Yoshitaka, Wada, Hajime
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7589413/
https://www.ncbi.nlm.nih.gov/pubmed/33053769
http://dx.doi.org/10.3390/ijms21207509
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author Jimbo, Haruhiko
Takagi, Kensuke
Hirashima, Takashi
Nishiyama, Yoshitaka
Wada, Hajime
author_facet Jimbo, Haruhiko
Takagi, Kensuke
Hirashima, Takashi
Nishiyama, Yoshitaka
Wada, Hajime
author_sort Jimbo, Haruhiko
collection PubMed
description Free fatty acids (FFA) generated in cyanobacterial cells can be utilized for the biodiesel that is required for our sustainable future. The combination of FFA and strong light induces severe photoinhibition of photosystem II (PSII), which suppresses the production of FFA in cyanobacterial cells. In the present study, we examined the effects of exogenously added FFA on the photoinhibition of PSII in Synechocystis sp. PCC 6803. The addition of lauric acid (12:0) to cells accelerated the photoinhibition of PSII by inhibiting the repair of PSII and the de novo synthesis of D1. α-Linolenic acid (18:3) affected both the repair of and photodamage to PSII. Surprisingly, palmitic (16:0) and stearic acids (18:0) enhanced the repair of PSII by accelerating the de novo synthesis of D1 with the mitigation of the photoinhibition of PSII. Our results show chemical potential of FFA in the regulation of PSII without genetic manipulation.
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spelling pubmed-75894132020-10-29 Long-Chain Saturated Fatty Acids, Palmitic and Stearic Acids, Enhance the Repair of Photosystem II Jimbo, Haruhiko Takagi, Kensuke Hirashima, Takashi Nishiyama, Yoshitaka Wada, Hajime Int J Mol Sci Article Free fatty acids (FFA) generated in cyanobacterial cells can be utilized for the biodiesel that is required for our sustainable future. The combination of FFA and strong light induces severe photoinhibition of photosystem II (PSII), which suppresses the production of FFA in cyanobacterial cells. In the present study, we examined the effects of exogenously added FFA on the photoinhibition of PSII in Synechocystis sp. PCC 6803. The addition of lauric acid (12:0) to cells accelerated the photoinhibition of PSII by inhibiting the repair of PSII and the de novo synthesis of D1. α-Linolenic acid (18:3) affected both the repair of and photodamage to PSII. Surprisingly, palmitic (16:0) and stearic acids (18:0) enhanced the repair of PSII by accelerating the de novo synthesis of D1 with the mitigation of the photoinhibition of PSII. Our results show chemical potential of FFA in the regulation of PSII without genetic manipulation. MDPI 2020-10-12 /pmc/articles/PMC7589413/ /pubmed/33053769 http://dx.doi.org/10.3390/ijms21207509 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jimbo, Haruhiko
Takagi, Kensuke
Hirashima, Takashi
Nishiyama, Yoshitaka
Wada, Hajime
Long-Chain Saturated Fatty Acids, Palmitic and Stearic Acids, Enhance the Repair of Photosystem II
title Long-Chain Saturated Fatty Acids, Palmitic and Stearic Acids, Enhance the Repair of Photosystem II
title_full Long-Chain Saturated Fatty Acids, Palmitic and Stearic Acids, Enhance the Repair of Photosystem II
title_fullStr Long-Chain Saturated Fatty Acids, Palmitic and Stearic Acids, Enhance the Repair of Photosystem II
title_full_unstemmed Long-Chain Saturated Fatty Acids, Palmitic and Stearic Acids, Enhance the Repair of Photosystem II
title_short Long-Chain Saturated Fatty Acids, Palmitic and Stearic Acids, Enhance the Repair of Photosystem II
title_sort long-chain saturated fatty acids, palmitic and stearic acids, enhance the repair of photosystem ii
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7589413/
https://www.ncbi.nlm.nih.gov/pubmed/33053769
http://dx.doi.org/10.3390/ijms21207509
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