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Cyclic electron flow around photosystem I via chloroplast NAD(P)H dehydrogenase (NDH) complex performs a significant physiological role during photosynthesis and plant growth at low temperature in rice

Yamori, Wataru ; Sakata, Naoki ; Suzuki, Yuji ; Shikanai, Toshiharu ; Makino, Amane

The Plant journal : for cell and molecular biology, December 2011, Vol.68(6), pp.966-76 [Periódico revisado por pares]

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  • Título:
    Cyclic electron flow around photosystem I via chloroplast NAD(P)H dehydrogenase (NDH) complex performs a significant physiological role during photosynthesis and plant growth at low temperature in rice
  • Autor: Yamori, Wataru ; Sakata, Naoki ; Suzuki, Yuji ; Shikanai, Toshiharu ; Makino, Amane
  • Assuntos: Cold Temperature ; Electron Transport -- Physiology ; Nadph Dehydrogenase -- Physiology ; Oryza -- Growth & Development ; Photosynthesis -- Physiology ; Photosystem I Protein Complex -- Metabolism
  • É parte de: The Plant journal : for cell and molecular biology, December 2011, Vol.68(6), pp.966-76
  • Descrição: The role of NAD(P)H dehydrogenase (NDH)-dependent cyclic electron flow around photosystem I in photosynthetic regulation and plant growth at several temperatures was examined in rice (Oryza sativa) that is defective in CHLORORESPIRATORY REDUCTION 6 (CRR6), which is required for accumulation of sub-complex A of the chloroplast NDH complex (crr6). NdhK was not detected by Western blot analysis in crr6 mutants, resulting in lack of a transient post-illumination increase in chlorophyll fluorescence, and confirming that crr6 mutants lack NDH activity. When plants were grown at 28 or 35°C, all examined photosynthetic parameters, including the CO(2) assimilation rate and the electron transport rate around photosystems I and II, at each growth temperature at light intensities above growth light (i.e. 800 μmol photons m(-2) sec(-1)), were similar between crr6 mutants and control plants. However, when plants were grown at 20°C, all the examined photosynthetic parameters were significantly lower in...
  • Idioma: Inglês

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