Počet záznamů: 1

High light acclimation of Chromera velia points to photoprotective NPQ

SYSNO ASEP	0488826
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	High light acclimation of Chromera velia points to photoprotective NPQ
Tvůrce(i)	Belgio, Erica (MBU-M) Trsková, Eliška (MBU-M) Kotabová, Eva (MBU-M)_{RID, ORCID} Ewe, Daniela (MBU-M)_ORCID Prášil, Ondřej (MBU-M)_{RID, ORCID} Kaňa, Radek (MBU-M)_{RID, ORCID}
Zdroj.dok.	Photosynthesis Research. - : Springer - ISSN 0166-8595 Roč. 135, 1-3 SI (2018), s. 263-274
Poč.str.	12 s.
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	Nonphotochemical quenching ; Photoinhibition ; Chromera velia alga
Vědní obor RIV	EE - Mikrobiologie, virologie
Obor OECD	Microbiology
CEP	LO1416 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	GA16-10088S GA ČR - Grantová agentura ČR
	GJ17-02363Y GA ČR - Grantová agentura ČR
Institucionální podpora	MBU-M - RVO:61388971
UT WOS	000423338500025
EID SCOPUS	85017426159
DOI	10.1007/s11120-017-0385-8
Anotace	It has previously been shown that the long-term treatment of Arabidopsis thaliana with the chloroplast inhibitor lincomycin leads to photosynthetic membranes enriched in antennas, strongly reduced in photosystem II reaction centers (PSII) and with enhanced nonphotochemical quenching (NPQ) (Belgio et al. Biophys J 102:2761-2771, 2012). Here, a similar physiological response was found in the microalga Chromera velia grown under high light (HL). In comparison to cells acclimated to low light, HL cells displayed a severe re-organization of the photosynthetic membrane characterized by (1) a reduction of PSII but similar antenna content, (2) partial uncoupling of antennas from PSII, (3) enhanced NPQ. The decrease in the number of PSII represents a rather unusual acclimation response compared to other phototrophs, where a smaller PSII antenna size is more commonly found under high light. Despite the diminished PSII content, no net damage could be detected on the basis of the Photosynthesis versus irradiance curve and electron transport rates pointing at the excess capacity of PSII. We therefore concluded that the photoinhibition is minimized under high light by a lower PSII content and that cells are protected by NPQ in the antennas.
Pracoviště	Mikrobiologický ústav
Kontakt	Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231
Rok sběru	2019

Počet záznamů: 1