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@ARTICLE{Caliandro:128315,
      author       = {Caliandro, R. and Nagel, Kerstin and Kastenholz, Bernd and
                      Bassi, R and Li, Z. and Niyogi, K.K. and Pogson, B.J. and
                      Schurr, Ulrich and Matsubara, Shizue},
      title        = {{E}ffects of altered α - and β -branch carotenoid
                      biosynthesis on photoprotection and whole-plant acclimation
                      of {A}rabidopsis to photo-oxidative stress},
      journal      = {Plant, cell $\&$ environment},
      volume       = {36},
      number       = {2},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2013-00057},
      pages        = {438 - 453},
      year         = {2013},
      abstract     = {Functions of α- and β-branch carotenoids in whole-plant
                      acclimation to photo-oxidative stress were studied in
                      Arabidopsis thaliana wild-type (wt) and carotenoid mutants,
                      lutein deficient (lut2, lut5), non-photochemical quenching1
                      (npq1) and suppressor of zeaxanthin-less1 (szl1) npq1 double
                      mutant. Photo-oxidative stress was applied by exposing
                      plants to sunflecks. The sunflecks caused reduction of
                      chlorophyll content in all plants, but more severely in
                      those having high α- to β-branch carotenoid composition
                      (α/β-ratio) (lut5, szl1npq1). While this did not alter
                      carotenoid composition in wt or lut2, which accumulates only
                      β-branch carotenoids, increased xanthophyll levels were
                      found in the mutants with high α/β-ratios (lut5, szl1npq1)
                      or without xanthophyll-cycle operation (npq1, szl1npq1). The
                      PsbS protein content increased in all sunfleck plants but
                      lut2. These changes were accompanied by no change (npq1,
                      szl1npq1) or enhanced capacity (wt, lut5) of NPQ. Leaf mass
                      per area increased in lut2, but decreased in wt and lut5
                      that showed increased NPQ. The sunflecks decelerated primary
                      root growth in wt and npq1 having normal α/β-ratios, but
                      suppressed lateral root formation in lut5 and szl1npq1
                      having high α/β-ratios. The results highlight the
                      importance of proper regulation of the α- and β-branch
                      carotenoid pathways for whole-plant acclimation, not only
                      leaf photoprotection, under photo-oxidative stress.},
      cin          = {IBG-2},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {242 - Sustainable Bioproduction (POF2-242)},
      pid          = {G:(DE-HGF)POF2-242},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000312997700016},
      doi          = {10.1111/j.1365-3040.2012.02586.x},
      url          = {https://juser.fz-juelich.de/record/128315},
}