Article
PGR5-dependent cyclic electron transport around PSI contributes to the redox homeostasis in chloroplasts rather than CO(2) fixation and biomass production in rice.
Plant & cell physiology - 1 Dec 2012
Nishikawa Yuri, Yamamoto Hiroshi, Okegawa Yuki, Wada Shinya, Sato Nozomi, Taira Yoshichika, Sugimoto Kazuhiko, Makino Amane, Shikanai Toshiharu
Abstract excerpt
The PGR5 (PROTON GRADIENT REGULATION 5) gene that is required for PSI cyclic electron transport in Arabidopsis was knocked down in rice (Oryza sativa). In three PGR5 knockdown (KD) lines, the PGR5 protein level was reduced to 5-8% of that in the wild type, resulting in a 50% reduction in PGRL1 (PGR5-LIKE PHOTOSYNTHETIC PHENOTYPE 1) protein levels. In ruptured chloroplasts, ferredoxin-dependent plastoquinone...
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