Palisade cell shape affects the light-induced chloroplast movements and leaf photosynthesis

Eiji Gotoh, Noriyuki Suetsugu, Takeshi Higa, Tomonao Matsushita, Hirokazu Tsukaya, Masamitsu Wada

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

Leaf photosynthesis is regulated by multiple factors that help the plant to adapt to fluctuating light conditions. Leaves of sun-light-grown plants are thicker and contain more columnar palisade cells than those of shade-grown plants. Light-induced chloroplast movements are also essential for efficient leaf photosynthesis and facilitate efficient light utilization in leaf cells. Previous studies have demonstrated that leaves of most of the sun-grown plants exhibited no or very weak chloroplast movements and could accomplish efficient photosynthesis under strong light. To examine the relationship between palisade cell shape, chloroplast movement and distribution, and leaf photosynthesis, we used an Arabidopsis thaliana mutant, angustifolia (an), which has thick leaves that contain columnar palisade cells similar to those in the sun-grown plants. In the highly columnar cells of an mutant leaves, chloroplast movements were restricted. Nevertheless, under white light condition (at 120 µmol m-2 s-1), the an mutant plants showed higher chlorophyll content per unit leaf area and, thus, higher light absorption by the leaves than the wild type, which resulted in enhanced photosynthesis per unit leaf area. Our findings indicate that coordinated regulation of leaf cell shape and chloroplast movement according to the light conditions is pivotal for efficient leaf photosynthesis.

元の言語英語
ページ(範囲)1472
ジャーナルScientific Reports
8
発行部数1
DOI
出版物ステータス出版済み - 1 24 2018

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Cell Shape
Photosynthesis
Chloroplasts
Light
Solar System
Chlorophyll
Arabidopsis

これを引用

Palisade cell shape affects the light-induced chloroplast movements and leaf photosynthesis. / Gotoh, Eiji; Suetsugu, Noriyuki; Higa, Takeshi; Matsushita, Tomonao; Tsukaya, Hirokazu; Wada, Masamitsu.

:: Scientific Reports, 巻 8, 番号 1, 24.01.2018, p. 1472.

研究成果: ジャーナルへの寄稿記事

Gotoh, Eiji ; Suetsugu, Noriyuki ; Higa, Takeshi ; Matsushita, Tomonao ; Tsukaya, Hirokazu ; Wada, Masamitsu. / Palisade cell shape affects the light-induced chloroplast movements and leaf photosynthesis. :: Scientific Reports. 2018 ; 巻 8, 番号 1. pp. 1472.
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abstract = "Leaf photosynthesis is regulated by multiple factors that help the plant to adapt to fluctuating light conditions. Leaves of sun-light-grown plants are thicker and contain more columnar palisade cells than those of shade-grown plants. Light-induced chloroplast movements are also essential for efficient leaf photosynthesis and facilitate efficient light utilization in leaf cells. Previous studies have demonstrated that leaves of most of the sun-grown plants exhibited no or very weak chloroplast movements and could accomplish efficient photosynthesis under strong light. To examine the relationship between palisade cell shape, chloroplast movement and distribution, and leaf photosynthesis, we used an Arabidopsis thaliana mutant, angustifolia (an), which has thick leaves that contain columnar palisade cells similar to those in the sun-grown plants. In the highly columnar cells of an mutant leaves, chloroplast movements were restricted. Nevertheless, under white light condition (at 120 µmol m-2 s-1), the an mutant plants showed higher chlorophyll content per unit leaf area and, thus, higher light absorption by the leaves than the wild type, which resulted in enhanced photosynthesis per unit leaf area. Our findings indicate that coordinated regulation of leaf cell shape and chloroplast movement according to the light conditions is pivotal for efficient leaf photosynthesis.",
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AU - Suetsugu, Noriyuki

AU - Higa, Takeshi

AU - Matsushita, Tomonao

AU - Tsukaya, Hirokazu

AU - Wada, Masamitsu

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