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Nonphotochemical quenching chlorophyll

It has been important to determine if the neoxanthin distortion signature could be detected during the nonphotochemical quenching in vivo. Resonance Raman measurements on leaves and chlo-roplasts of various Arabidopsis mutants have revealed a small increase in the 950 cm 1 region. The relationship between the amplitude of this transition and the amount of NPQ suggests that the LHCII aggregation may be the sole cause of the protective chlorophyll fluorescence quenching in vivo (Ruban et al., 2007). [Pg.127]

Pogson B, Niyogi KK, Bjbrkman O and Dellapenna D (1998) Altered xanthophyll compositions adversely affect chlorophyll accumulation and nonphotochemical quenching in Arabidopsis mutants. Proc Natl Acad Sci USA 95 13324-13329 Polivka T, Herek JL, Zigmantas D, Akerlund H-E and Sundstrbm V (1999) Direct observation of the (forbidden) Sj state in carotenoids. Proc Natl Acad Sci USA 96 4914-4917 Rabinowitch E (1945) Photosynthesis and Related Processes. Vol. I. Chemistry of Photosynthesis, Chemosynthesis and Related Processes in Vitro and in Vivo. (See scheme 7.V on p. 162.) Interscience Publishers Inc., New York Rabinowitch E (1951) Photosynthesis and Related Topics, Vol. II, Part 1, Spectroscopy and fluorescence Kinetics of Photosynthesis. Interscience Publishers Inc., New York Rabinowitch E (1956)Photosynthesis and Related Processes. Vol. II. Part 2. Kinetics of Photosynthesis (continued) Addenda to Vol. I and Vol. II, Part I. (See p. 1862, paragraph 2.)... [Pg.18]

Fig. 7. Fractional carotenoid composition (expressed relative to foliar chlorophyll content top panel) and (bottom graph) time-course of changes in energy dissipation activity quantified as nonphotochemical quenching of F upon the transition from darkness to 2050 /imol photons m s" at 25 C as well as the conversion state of the xanthophyll cycle (fractionally expressed relative to foliar chlorophyll content) determined at the end of each exposure from leaves of Euonymus kiautschovicus collected from plants growing in deep shade or in a fully exposed site in Boulder, Colorado. Data from Demmig-Adams et al. (1995). Fig. 7. Fractional carotenoid composition (expressed relative to foliar chlorophyll content top panel) and (bottom graph) time-course of changes in energy dissipation activity quantified as nonphotochemical quenching of F upon the transition from darkness to 2050 /imol photons m s" at 25 C as well as the conversion state of the xanthophyll cycle (fractionally expressed relative to foliar chlorophyll content) determined at the end of each exposure from leaves of Euonymus kiautschovicus collected from plants growing in deep shade or in a fully exposed site in Boulder, Colorado. Data from Demmig-Adams et al. (1995).
Fig. 8. Degree of conversion of the xanthophyll cycle to Z+A (top panel), relative to either total chlorophyll content or total xanthophyll cycle content, as well as (bottom panels) the level of energy dissipation activity quantified from the nonphotochemical quenching of and the efficiency of open PS II units following illumination with a high PFD of between 1800 and 2050 /tmol photons m" s" for 10 to 15 min. Data are means ( SE) of means from 7 species growing in deep shade (solid bars) and 18 species growing in full sunlight (open bars) in Boulder, Colorado. Data from Demmig-Adams (1998),... Fig. 8. Degree of conversion of the xanthophyll cycle to Z+A (top panel), relative to either total chlorophyll content or total xanthophyll cycle content, as well as (bottom panels) the level of energy dissipation activity quantified from the nonphotochemical quenching of and the efficiency of open PS II units following illumination with a high PFD of between 1800 and 2050 /tmol photons m" s" for 10 to 15 min. Data are means ( SE) of means from 7 species growing in deep shade (solid bars) and 18 species growing in full sunlight (open bars) in Boulder, Colorado. Data from Demmig-Adams (1998),...
Ruban AV and Horton P(1995) An investigation ofthe sustained component of nonphotochemical quenching of chlorophyll fluorescence in isolated chloroplasts and leaves of spinach. Plant Physiol 108 721-726... [Pg.269]

Horton P (1996) Nonphotochemical quenching of chlorophyll fluorescence. In Jennings RC, Zucchelli G, Ghetti F and Colombetti G (eds) Light as an Energy Source and Information Carrier in Plant Physiology, pp 99-111. Plenum Press, New York... [Pg.289]

Fig. 5.30 General behaviour of the chlorophyll a fluorescence after exposing a dark-adapted leaf to light. The fluorescence intensity first increases due to a decrease of photochemical quenching (a) and then decreases due to an increase of nonphotochemical quenching (b)... Fig. 5.30 General behaviour of the chlorophyll a fluorescence after exposing a dark-adapted leaf to light. The fluorescence intensity first increases due to a decrease of photochemical quenching (a) and then decreases due to an increase of nonphotochemical quenching (b)...
Fig. 5.31 Recording the nonphotochemical quenching transient of chlorophyll a. The TCSPC module records a single sequence of fluorescence decay curves starting with the switch-on of the laser... Fig. 5.31 Recording the nonphotochemical quenching transient of chlorophyll a. The TCSPC module records a single sequence of fluorescence decay curves starting with the switch-on of the laser...
Govindjee, M.J. Seufferheld, Nonphotochemical quenching of chlorophyll a Fluorescence Early history and characterization of two xanthophyll-cycle mutants of Chlamydomonas Reinhardtii, Funct. Plant Biol. 29, 1141-1155 (2002)... [Pg.363]

Owens TG, Shreve AP and Albrecht AC (1992) Dynamics and mechanism of singlet energy transfer between carotenoids and chlorophylls Light harvesting and nonphotochemical fluorescence quenching. In Murata N (ed) Research in Photosynthesis, Vol 4, pp 179-186. Kluwer Academic Publishers, Dordrecht... [Pg.290]

Ruban AV and Horton P (1994) Spectroscopy of nonphotochemical and photochemical quenching of chlorophyll fluorescence in leaves evidence for a role of the fight harvesting complex of Photosystem II in the regulation of energy dissipation. Photosynth Res 40 181-190... [Pg.290]

See other pages where Nonphotochemical quenching chlorophyll is mentioned: [Pg.130]    [Pg.258]    [Pg.122]    [Pg.123]    [Pg.17]    [Pg.32]    [Pg.36]    [Pg.246]    [Pg.288]    [Pg.291]    [Pg.301]    [Pg.301]    [Pg.89]    [Pg.93]    [Pg.347]    [Pg.1867]    [Pg.347]    [Pg.124]    [Pg.299]    [Pg.1319]   
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