Winter acclimation of PsbS and related proteins in the evergreen Arctostaphylos uva-ursi as influenced by altitude and light environment. Zarter, C. R., Adams, W. W., Ebbert, V., Adamska, I., Jansson, S., & Demmig-Adams, B. Plant, Cell & Environment, 29(5):869–878, 2006. _eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.2005.01466.x
Winter acclimation of PsbS and related proteins in the evergreen Arctostaphylos uva-ursi as influenced by altitude and light environment [link]Paper  doi  abstract   bibtex   
The evergreen groundcover bearberry (Arctostaphylos uva-ursi[L.] Sprengel) was characterized over two successive years (2002–2004) from both sun-exposed and shaded sites at a montane ponderosa pine and subalpine forest community of 1900- and 2800-m-high altitudes, respectively. During summer, photosynthetic capacities and pre-dawn photosystem II (PSII) efficiency were similarly high in all four populations, and in winter, only the sun-exposed and shaded populations at 2800 m exhibited complete down-regulation of photosynthetic oxygen evolution capacity and consistent sustained down-regulation of PSII efficiency. This photosynthetic down-regulation at high altitude involved a substantial decrease in PSII components [pheophytin, D1 protein, oxygen evolving complex ([OEC)], a strong up-regulation of several anti-early-light-inducible protein (Elip)- and anti-high-light-inducible protein (Hlip)-reactive bands and a warm-sustained retention of zeaxanthin and antheraxanthin (Z + A). PsbS, the protein modulating the rapid engagement and disengagement of Z + A in energy dissipation, exhibited its most pronounced winter increases in the shade at 1900 m, and thus apparently assumes a greater role in providing rapidly reversible zeaxanthin-dependent photoprotection during winter when light becomes excessive in the shaded population, which remains photosynthetically active. It is attractive to hypothesize that PsbS relatives (Elips/Hlips) may be involved in sustained zeaxanthin-dependent photoprotection under the more extreme winter conditions at 2800 m.
@article{zarter_winter_2006,
	title = {Winter acclimation of {PsbS} and related proteins in the evergreen {Arctostaphylos} uva-ursi as influenced by altitude and light environment},
	volume = {29},
	issn = {1365-3040},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-3040.2005.01466.x},
	doi = {10/dffrdg},
	abstract = {The evergreen groundcover bearberry (Arctostaphylos uva-ursi[L.] Sprengel) was characterized over two successive years (2002–2004) from both sun-exposed and shaded sites at a montane ponderosa pine and subalpine forest community of 1900- and 2800-m-high altitudes, respectively. During summer, photosynthetic capacities and pre-dawn photosystem II (PSII) efficiency were similarly high in all four populations, and in winter, only the sun-exposed and shaded populations at 2800 m exhibited complete down-regulation of photosynthetic oxygen evolution capacity and consistent sustained down-regulation of PSII efficiency. This photosynthetic down-regulation at high altitude involved a substantial decrease in PSII components [pheophytin, D1 protein, oxygen evolving complex ([OEC)], a strong up-regulation of several anti-early-light-inducible protein (Elip)- and anti-high-light-inducible protein (Hlip)-reactive bands and a warm-sustained retention of zeaxanthin and antheraxanthin (Z + A). PsbS, the protein modulating the rapid engagement and disengagement of Z + A in energy dissipation, exhibited its most pronounced winter increases in the shade at 1900 m, and thus apparently assumes a greater role in providing rapidly reversible zeaxanthin-dependent photoprotection during winter when light becomes excessive in the shaded population, which remains photosynthetically active. It is attractive to hypothesize that PsbS relatives (Elips/Hlips) may be involved in sustained zeaxanthin-dependent photoprotection under the more extreme winter conditions at 2800 m.},
	language = {en},
	number = {5},
	urldate = {2021-06-11},
	journal = {Plant, Cell \& Environment},
	author = {Zarter, C. Ryan and Adams, William W. and Ebbert, Volker and Adamska, Iwona and Jansson, Stefan and Demmig-Adams, Barbara},
	year = {2006},
	note = {\_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3040.2005.01466.x},
	keywords = {D1 protein, Elip, Hlip, OEC, PsbS, energy dissipation, photoinhibition, photosynthesis, winter stress, zeaxanthin},
	pages = {869--878},
}

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