Počet záznamů: 1
Effects of low temperature on photoinhibition and singlet oxygen production in four natural accessions of Arabidopsis
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SYSNO ASEP 0531313 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effects of low temperature on photoinhibition and singlet oxygen production in four natural accessions of Arabidopsis Tvůrce(i) Mattila, H. (FI)
Mishra, Kumud (UEK-B) RID, ORCID, SAI
Kuusisto, I. (FI)
Mishra, Anamika (UEK-B) RID
Surá, Kateřina (UEK-B) RID, SAI, ORCID
Šebela, David (UEK-B) RID, SAI
Tyystjärvi, E. (FI)Celkový počet autorů 7 Číslo článku 19 Zdroj.dok. Planta. - : Springer - ISSN 0032-0935
Roč. 252, č. 2 (2020)Poč.str. 17 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Acclimation ; Charge recombination ; Chilling stress ; Cold-hardening ; Photodamage ; Photoinactivation ; Reactive oxygen species ; sosg Vědní obor RIV EF - Botanika Obor OECD Biophysics CEP LO1415 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF16_019/0000797 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CzeCOS III - 90123 - Ústav výzkumu globální změny AV ČR, v. v. i. Způsob publikování Open access Institucionální podpora UEK-B - RVO:86652079 UT WOS 000553162500002 EID SCOPUS 85088047936 DOI 10.1007/s00425-020-03423-0 Anotace Main conclusions: Low temperature decreases PSII damage in vivo, confirming earlier in vitro results. Susceptibility to photoinhibition differs among Arabidopsis accessions and moderately decreases after 2-week cold-treatment. Flavonols may alleviate photoinhibition. Abstract: The rate of light-induced inactivation of photosystem II (PSII) at 22 and 4 °C was measured from natural accessions of Arabidopsis thaliana (Rschew, Tenela, Columbia-0, Coimbra) grown under optimal conditions (21 °C), and at 4 °C from plants shifted to 4 °C for 2 weeks. Measurements were done in the absence and presence of lincomycin (to block repair). PSII activity was assayed with the chlorophyll a fluorescence parameter Fv/Fm and with light-saturated rate of oxygen evolution using a quinone acceptor. When grown at 21 °C, Rschew was the most tolerant to photoinhibition and Coimbra the least. Damage to PSII, judged from fitting the decrease in oxygen evolution or Fv/Fm to a first-order equation, proceeded more slowly or equally at 4 than at 22 °C. The 2-week cold-treatment decreased photoinhibition at 4 °C consistently in Columbia-0 and Coimbra, whereas in Rschew and Tenela the results depended on the method used to assay photoinhibition. The rate of singlet oxygen production by isolated thylakoid membranes, measured with histidine, stayed the same or slightly decreased with decreasing temperature. On the other hand, measurements of singlet oxygen from leaves with Singlet Oxygen Sensor Green suggest that in vivo more singlet oxygen is produced at 4 °C. Under high light, the PSII electron acceptor QA was more reduced at 4 than at 22 °C. Singlet oxygen production, in vitro or in vivo, did not decrease due to the cold-treatment. Epidermal flavonols increased during the cold-treatment and, in Columbia-0 and Coimbra, the amount correlated with photoinhibition tolerance. Pracoviště Ústav výzkumu globální změny Kontakt Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Rok sběru 2021 Elektronická adresa https://link.springer.com/article/10.1007%2Fs00425-020-03423-0
Počet záznamů: 1