Singlet oxygen-triggered chloroplast-to-nucleus retrograde signalling pathways: An emerging perspective

Plant, Cell & Environment
Vivek DograChanhong Kim

Abstract

Singlet oxygen (1 O2 ) is a prime cause of photo-damage of the photosynthetic apparatus. The chlorophyll molecules in the photosystem II reaction center and in the light-harvesting antenna complex are major sources of 1 O2 generation. It has been thought that the generation of 1 O2 mainly takes place in the appressed regions of the thylakoid membranes, namely, the grana core, where most of the active photosystem II complexes are localized. Apart from being a toxic molecule, new evidence suggests that 1 O2 significantly contributes to chloroplast-to-nucleus retrograde signalling that primes acclimation and cell death responses. Interestingly, recent studies reveal that chloroplasts operate two distinct 1 O2 -triggered retrograde signalling pathways in which β-carotene and a nuclear-encoded chloroplast protein EXECUTER1 play essential roles as signalling mediators. The coexistence of these mediators raises several questions: their crosstalk, source(s) of 1 O2 , downstream signalling components, and the perception and reaction mechanism of these mediators towards 1 O2 . In this review, we mainly discuss the molecular genetic basis of the mode of action of these two putative 1 O2 sensors and their corresponding retrograde signallin...Continue Reading

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Citations

Oct 3, 2018·Journal of Experimental Botany·Liangsheng Wang, Klaus Apel
Apr 17, 2019·Journal of Experimental Botany·Vivek DograChanhong Kim
Apr 20, 2019·Antioxidants·Martina JankůMarek Petřivalský
Aug 23, 2019·Plant Signaling & Behavior·Vivek Dogra, Chanhong Kim
Jan 16, 2020·Plants·Sergey KhorobrykhEsa Tyystjärvi
Jan 29, 2020·Antioxidants & Redox Signaling·Juanjuan YuShaojun Dai
Aug 17, 2019·Frontiers in Plant Science·Jun LiuRobert L Last
Aug 29, 2018·International Journal of Molecular Sciences·Jared J StewartBarbara Demmig-Adams
Nov 24, 2018·Physiologia Plantarum·Nicole A Alber, Greg C Vanlerberghe
May 22, 2019·Molecular Microbiology·Timothy J Donohue
Jul 29, 2020·Frontiers in Plant Science·Francisco J CorpasJosé M Palma
May 5, 2020·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Dilek UnalKarl-Josef Dietz
Jan 24, 2020·Frontiers in Plant Science·Vivek Dogra, Chanhong Kim
May 16, 2019·The New Phytologist·Stefano D'Alessandro, Michel Havaux
May 8, 2020·International Journal of Molecular Sciences·Valeriya A DmitrievaOlga V Voitsekhovskaja
Dec 2, 2020·The Plant Journal : for Cell and Molecular Biology·Juan C MorenoSalim Al-Babili
Mar 23, 2021·Frontiers in Plant Science·Feng YangJinliang Liu
Sep 30, 2020·Molecular Plant·Stefano D'AlessandroMichel Havaux
Apr 4, 2021·The Plant Journal : for Cell and Molecular Biology·Nicole A Alber, Greg C Vanlerberghe
Aug 3, 2021·Photosynthesis Research·Alonso Zavafer

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