caa a22 4500 605480966 CHVBK 20210128100418.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s11099-015-0133-2 doi (NATIONALLICENCE)springer-10.1007/s11099-015-0133-2 Effect of light intensity on the age dependence of nonphotochemical fluorescence quenching in wheat leaf [Elektronische Daten] [T. Nesterenko, V. Shikhov, A. Tikhomirov] The effects of actinic light (AL) intensity on the age dependence of nonphotochemical fluorescence quenching (qN) and effective quantum yield in PSII (ΦPSII) were studied in continuously illuminated wheat leaves of the upper tier. Regular changes were revealed in both age dependence of qN at elevated AL intensities and light curves of qN. These changes are related to alterations in strategies of redistribution and use of absorbed light energy by the photosynthetic apparatus at different stages of wheat leaf development. Unlike ΦPSII, qN as a parameter was more sensitive to the differences in the leaf age at a certain range of light intensities. At the same time, the stability of qN at moderate light intensities may serve as an indication of leaf maturity. The Institute of Experimental Botany, 2015 chlorophyll fluorescence induction nationallicence leaf age nationallicence photosystem II nationallicence AL : actinic light nationallicence CFI : chlorophyll fluorescence induction nationallicence Chl : chlorophyll nationallicence F0 : minimal fluorescence yield of the dark-adapted state nationallicence F0′ : minimal fluorescence yield of the light-adapted state nationallicence Fm : maximal fluorescence yield of the dark-adapted state nationallicence Fm′ : maximal fluorescence yield of the light-adapted state nationallicence Fs : steady-state fluorescence yield nationallicence Fv : variable fluorescence nationallicence Fv/Fm : maximum quantum yield of PSII photochemistry nationallicence qN : nonphotochemical quenching nationallicence ΦPSII : effective quantum yield of PSII photochemistry nationallicence Nesterenko T. Institute of Biophysics, Siberian Branch RAS, 50/50 Akademgorodok, 660036, Krasnoyarsk, Russia aut Shikhov V. Institute of Biophysics, Siberian Branch RAS, 50/50 Akademgorodok, 660036, Krasnoyarsk, Russia aut Tikhomirov A. Institute of Biophysics, Siberian Branch RAS, 50/50 Akademgorodok, 660036, Krasnoyarsk, Russia aut Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/4(2015-12-01), 617-620 0300-3604 53:4<617 2015 53 11099 https://doi.org/10.1007/s11099-015-0133-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 brief-communication jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11099-015-0133-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nesterenko T. Institute of Biophysics, Siberian Branch RAS, 50/50 Akademgorodok, 660036, Krasnoyarsk, Russia aut NATIONALLICENCE 700 1- Shikhov V. Institute of Biophysics, Siberian Branch RAS, 50/50 Akademgorodok, 660036, Krasnoyarsk, Russia aut NATIONALLICENCE 700 1- Tikhomirov A. Institute of Biophysics, Siberian Branch RAS, 50/50 Akademgorodok, 660036, Krasnoyarsk, Russia aut NATIONALLICENCE 773 0- Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/4(2015-12-01), 617-620 0300-3604 53:4<617 2015 53 11099