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Rajeev Arora and Lisa J. Rowland

not been well investigated, particularly in the context of broad-leaved evergreens, is cellular mechanisms of photoprotection during cold winters. Cold temperatures during winter can inhibit the enzymatic reactions of photosynthesis while not affecting

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Geoffrey Weaver and Marc W. van Iersel

relationship between the quantum yield of photosynthetic electron transport and quenching of chlorophyll fluorescence Biochim. Biophys. Acta 990 87 92 Horton, P. 2012 Optimization of light harvesting and photoprotection: Molecular mechanisms and physiological

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Xiang Wang, Rajeev Arora, Harry T. Horner, and Stephen L. Krebs

thicker adaxial epidermal cells in R. ponticum ( Figs. 2A, 2C , and 4B ) could be structural adaptations presumably associated with the photoprotection (from total light and/or specifically ultraviolet) during winter in this species. Our results also

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Sheng Xu, Mingmin Jiang, Jiangyan Fu, Lijian Liang, Bing Xia, and Ren Wang

water status, higher levels of proline, soluble sugar and pigments, and stronger photoprotection. Moreover, relatively higher antioxidant enzyme activities and lower levels of TBARS in L. radiata were also associated with its better protection against

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Dean A. Kopsell, James T. Brosnan, Gregory R. Armel, and J. Scott McElroy

). Carotenoids are lipid soluble pigments integrated into light-harvesting complexes that perform physiological roles of photoprotection and light-harvesting ( Croce et al., 1999a , 1999b ). Photoprotection is the prevention of oxidative damage, or

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James T. Brosnan, Dean A. Kopsell, Matthew T. Elmore, Gregory K. Breeden, and Gregory R. Armel

selected based on their active roles in photoprotection and light harvesting. Peak assignments were performed by comparing retention times to internal standards and line spectra (250 to 700 nm) obtained from photodiode array detection with authentic

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Marc W. van Iersel, Geoffrey Weaver, Michael T. Martin, Rhuanito S. Ferrarezi, Erico Mattos, and Mark Haidekker

Chlorophyll fluorescence: A probe of photosynthesis in vivo Annu. Rev. Plant Biol. 59 89 113 Bilger, W. Björkman, O. 1990 Role of the xanthophyll cycle in photoprotection elucidated by measurements of light-induced absorbance changes, fluorescence and

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Carolina A. Torres, Omar Hernandez, Maria A. Moya-León, Ivan Razmilic, and David R. Rudell

between cultivars leading to different Car:Chl ratios undoubtedly play a role in tissue stability (photoprotection vs. photooxidation) during sunburn development and perhaps also during sunscald and “stain” development postharvest. In fact, the amount of

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Brian Makeredza, Helen Marais, Michael Schmeisser, Elmi Lötze, and Willem J. Steyn

addition to masking, lower incidences of sunburn in blushed and red cultivars might also be attributed to the anthocyanin providing photoprotection ( Li and Cheng, 2009 ) or having a restorative effect on fruit with prior sunburn browning symptoms. We found

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Eric T. Stafne, Amir Rezazadeh, Melinda Miller-Butler, and Barbara J. Smith

bicolor Moench seedlings J. Plant Physiol. 148 92 99 Hatier, J.H.B. Clearwater, M.J. Gould, K.S. 2013 The functional significance of black-pigmented leaves: Photosynthesis, photo-protection, and productivity in Ophiopogon planiscapus ‘Nigrescens’ PLoS