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Two Quenchers Formed During Photodamage of Phostosystem II and The Role of One Quencher in Preemptive Photoprotection

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dc.contributor.authorZavafer, Alonso
dc.contributor.authorIermak, Ievgeniia
dc.contributor.authorCheah, Mun Hon
dc.contributor.authorChow, Wah Soon
dc.date.accessioned2021-04-20T04:33:24Z
dc.date.available2021-04-20T04:33:24Z
dc.date.issued2019
dc.date.updated2020-11-22T07:53:12Z
dc.description.abstractThe quenching of chlorophyll fluorescence caused by photodamage of Photosystem II (qI) is a well recognized phenomenon, where the nature and physiological role of which are still debatable. Paradoxically, photodamage to the reaction centre of Photosystem II is supposed to be alleviated by excitation quenching mechanisms which manifest as fluorescence quenchers. Here we investigated the time course of PSII photodamage in vivo and in vitro and that of picosecond time-resolved chlorophyll fluorescence (quencher formation). Two long-lived fluorescence quenching processes during photodamage were observed and were formed at different speeds. The slow-developing quenching process exhibited a time course similar to that of the accumulation of photodamaged PSII, while the fast-developing process took place faster than the light-induced PSII damage. We attribute the slow process to the accumulation of photodamaged PSII and the fast process to an independent quenching mechanism that precedes PSII photodamage and that alleviates the inactivation of the PSII reaction centre.en_AU
dc.description.sponsorshipThis research is fnanced in part by the BioSolar Cells open innovation consortium, supported by the Dutch Ministry of Economic Affairs, Agriculture and Innovation. A.Z., W.C. and M.C. acknowledges Australian Research Council - Discovery grant DP120100872. A.Z. is grateful to his PhD sponsors National Council of Science and Technology of Mexico (CONACYT), the Mexican Secretariat of Public Education (SEP), the Australian National University and the ARC Centre of Excellence of Translational Photosynthesis.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn2045-2322en_AU
dc.identifier.urihttp://hdl.handle.net/1885/230411
dc.language.isoen_AUen_AU
dc.provenanceThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en_AU
dc.publisherNature Publishing Groupen_AU
dc.relationhttp://purl.org/au-research/grants/arc/DP120100872en_AU
dc.rights© Te Author(s) 2019en_AU
dc.rights.licenseCreative Commons Attribution licenceen_AU
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_AU
dc.sourceScientific Reportsen_AU
dc.source.urihttps://www.nature.com/articles/s41598-019-53030-7en_AU
dc.titleTwo Quenchers Formed During Photodamage of Phostosystem II and The Role of One Quencher in Preemptive Photoprotectionen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue0en_AU
local.contributor.affiliationZavaleta Fernandez de Cordova, Alonso, College of Science, ANUen_AU
local.contributor.affiliationIermak, Ievgeniia, Wageningen Universityen_AU
local.contributor.affiliationCheah, Mun Hon (Michael), College of Science, ANUen_AU
local.contributor.affiliationChow, Wah, College of Science, ANUen_AU
local.contributor.authoruidZavaleta Fernandez de Cordova, Alonso, u4932188en_AU
local.contributor.authoruidCheah, Mun Hon (Michael), u5310913en_AU
local.contributor.authoruidChow, Wah, u9609696en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor060705 - Plant Physiologyen_AU
local.identifier.absseo820215 - Vegetablesen_AU
local.identifier.ariespublicationu5786633xPUB1411en_AU
local.identifier.citationvolume9en_AU
local.identifier.doi10.1038/s41598-019-53030-7en_AU
local.identifier.thomsonIDWOS:000498048500010
local.publisher.urlhttps://www.nature.com/articles/en_AU
local.type.statusPublished Versionen_AU

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