Lutein accumulation in the absence of zeaxanthin restores nonphotochemical quenching in the Arabidopsis thaliana npq1 mutant.

@article{Li2009LuteinAI,
  title={Lutein accumulation in the absence of zeaxanthin restores nonphotochemical quenching in the Arabidopsis thaliana npq1 mutant.},
  author={Zhirong Li and Tae Kyu Ahn and Thomas J. Avenson and Matteo Ballottari and Jeffrey A. Cruz and David M. Kramer and Roberto Bassi and Graham R Fleming and Jay D Keasling and Krishna K Niyogi},
  journal={The Plant cell},
  year={2009},
  volume={21 6},
  pages={1798-812}
}
Plants protect themselves from excess absorbed light energy through thermal dissipation, which is measured as nonphotochemical quenching of chlorophyll fluorescence (NPQ). The major component of NPQ, qE, is induced by high transthylakoid DeltapH in excess light and depends on the xanthophyll cycle, in which violaxanthin and antheraxanthin are deepoxidized to form zeaxanthin. To investigate the xanthophyll dependence of qE, we identified suppressor of zeaxanthin-less1 (szl1) as a suppressor of… CONTINUE READING

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