Chloroplast Accumulation Response Enhances Leaf Photosynthesis and Plant Biomass Production

Eiji Gotoh, Noriyuki Suetsugu, Wataru Yamori, Kazuhiro Ishishita, Ryota Kiyabu, Masako Fukuda, Takeshi Higa, Bungo Shirouchi, Masamitsu Wada

研究成果: ジャーナルへの寄稿学術誌査読

54 被引用数 (Scopus)


Under high light intensity, chloroplasts avoid absorbing excess light by moving to anticlinal cell walls (avoidance response), but under low light intensity, chloroplasts accumulate along periclinal cell walls (accumulation response). In most plant species, these responses are induced by blue light and are mediated by the blue light photoreceptor, phototropin, which also regulates phototropism, leaf flattening, and stomatal opening. These phototropin-mediated responses could enhance photosynthesis and biomass production. Here, using various Arabidopsis (Arabidopsis thaliana) mutants deficient in chloroplast movement, we demonstrated that the accumulation response enhances leaf photosynthesis and plant biomass production. Conspicuously, phototropin2 mutant plants specifically defective in the avoidance response but not in other phototropin-mediated responses displayed a constitutive accumulation response irrespective of light intensities, enhanced leaf photosynthesis, and increased plant biomass production. Therefore, our findings provide clear experimental evidence of the importance of the chloroplast accumulation response in leaf photosynthesis and biomass production.

ジャーナルPlant Physiology
出版ステータス出版済み - 11月 1 2018

!!!All Science Journal Classification (ASJC) codes

  • 生理学
  • 遺伝学
  • 植物科学


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