UVB effects on the photosystem II-D1 protein of phytoplankton and natural phytoplankton communities

Photochemistry and Photobiology
Josée Nina BouchardDouglas A Campbell

Abstract

The reaction center of photosystem II is susceptible to photodamage. In particular the D1 protein located in the photosystem II core has a rapid, light-dependent turnover termed the photosystem II repair cycle that, under illumination, degrades and resynthesizes D1 protein to limit accumulation of photodamaged photosystem II. Most studies concerning the effects of UVB (280-320 nm) on this cycle have been on cyanobacteria or specific phytoplankton species rather than on natural communities of phytoplankton. During a 5-year multidisciplinary project on the effects of UV radiation (200-400 nm) on natural systems, the effects of UVB on the D1 protein of natural phytoplankton communities were assessed. This review provides an overview of photoinhibitory effects of light on cultured and natural phytoplankton, with an emphasis on the interrelation of UVB exposure, D1 protein degradation and the repair of photosystem II through D1 resynthesis. Although the UVB component of the solar spectrum contributes to the primary photoinactivation of photosystem II, we conclude that, in natural communities, inhibition of the rate of the photosystem II repair cycle is a more important influence of UVB on primary productivity. Indeed, exposing tropi...Continue Reading

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Citations

May 23, 2013·Bulletin of Mathematical Biology·Sze-Bi HsuKohei Yoshiyama
Jul 8, 2014·Journal of Photochemistry and Photobiology. B, Biology·Donat-P HäderE Walter Helbling
Oct 7, 2008·FEMS Microbiology Reviews·Amel LatifiCheng-Cai Zhang
Oct 21, 2016·Plant Physiology and Biochemistry : PPB·Germán PérezPilar Irisarri
Aug 27, 2009·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Joel W Harrison, Ralph E H Smith
Aug 27, 2009·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Maria VernetHoracio E Zagarese
Mar 9, 2007·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·D-P HäderR C Worrest
Sep 6, 2014·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Donat-P HäderE Walter Helbling
Jan 22, 2011·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·D-P HäderR C Worrest
Feb 6, 2009·Environmental Science & Technology·Dani J Barrington, Anas Ghadouani

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Methods Mentioned

BETA
environmental stresses

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