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Acclimation of shade-tolerant and light-resistant Tradescantia species to growth light: chlorophyll a fluorescence, electron transport, and xanthophyll contentстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 сентября 2018 г.
- Авторы: Mishanin V.I., Trubitsin B.V., Patsaeva S.V., Ptushenko V.V., Solovchenko A.E., Tikhonov A.N.
- Журнал: Photosynthesis Research
- Том: 133
- Номер: 1-3
- Год издания: 2017
- Издательство: Springer Nature
- Местоположение издательства: Switzerland
- Первая страница: 87
- Последняя страница: 102
- DOI: 10.1007/s11120-017-0339-1
- Аннотация: In this study, we have compared the photosynthetic characteristics of two contrastingspecies of Tradescantia plants, T. fluminensis (shade-tolerant species) and T.sillamontana (light-resistant species), grown under low light (LL, 50-125 μmol m-2 s-1)or high light (HL, 875-1000 μmol m-2 s-1) conditions during their entire growth period.For monitoring the functional state of photosynthetic apparatus (PSA), we measuredchlorophyll (Chl) a emission fluorescence spectra and kinetics of light-induced changes in the heights of fluorescence peaks at 685 and 740 nm (F685 and F740). Using theEPR method, we also compared the light-induced oxidation of P700, and assayed thecomposition of carotenoids in Tradescantia leaves grown under the LL and HLconditions. The analyses of slow induction of Chl a fluorescence (SIF) uncovereddifferent traits in the LL- and HL-grown plants of ecologically contrasting Tradescantiaspecies, which may have potential ecophysiological significance with respect of theirtolerance to HL stress. The fluorometry and EPR studies of induction events inchloroplasts in situ demonstrated that acclimation of both Tradescantia species to HLconditions promoted faster responses of their PSA as compared to LL-grown plants.Acclimation of both species to HL also caused marked changes in the leaf anatomyand carotenoid composition (an increase in Violaxanthin+Antheraxantin+Zeaxantin andLutein pools), suggesting enhanced photoprotective capacity of the carotenoids in theplants grown in nature under high irradiance. Collectively, the results of the presentwork suggest that the mechanisms of long-term PSA photoprotection in Tradescantiaare based predominantly on the light-induced remodeling of pigment-proteincomplexes in chloroplasts.
- Добавил в систему: Тихонов Александр Николаевич