Photosynthetic Adaptation to Salt Stress in Three-Color Leaves of a C_4 Plant Amaranthus tricolor
スポンサーリンク
概要
- 論文の詳細を見る
We examined the photosynthetic adaptation mechanisms for salt stress in Amaranthus tricolor, which has leaves with green yellow and red regions, in relation to the accumulation of glycinebetaine as osmoprotectants. The content of Ch1, especially of Ch1 b in the red and yellow regions was 3〜4% of that in the green region. The levels of Ch1 proteins such as LHCII, PSI and PSII were significantly lower than those in the green region. However, the contents of other photosynthetic proteins in these regions seem to be relatively high. We observed the net photosynthetic CO_2 fixation activity in the red and yellow regions which was about 40% of that in the green region. Upon salt stress(0.3 M NaCl) for 5 d the levels of CH1, PSI, PSII, ribulose 1, 5-bis phosphate carboxygenase and oxygenase, and the CO_2 fixation rate in the green region decreased by about 20〜35% whereas those in the non-green regions remained almost at the same levels. A tricolor was found to accumulates glycinebetaine, betainealdehyde dehydrogenase and choline monooxygenase at similar levels in all three color regions and their contents increased upon salt stress. These results suggest that the low capacity of light harvesting in non-green regions would be favor of salt stress since the photosynthetic components in these regions were retained at relatively high levels under high salinity.
- 日本植物生理学会の論文
著者
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Hibino Takashi
Graduate School Of Environmental And Human Sciences Meijo University
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ISHIKAWA Hiroshi
Department of Radiology, Niigata University School of Medicine
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Tanaka Y
Graduate School Of Environmental And Human Sciences Meijo University
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Takabe Teruhiro
Research Institute, Meijo University
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Tanaka Yoshito
Department of Chemistry, Faculty of Science and Technology, Meijo University
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HIBINO Takashi
Department of Chemistry, Faculty of Science and Technology, Meijo University
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Hibino T
Graduate School Of Environmental And Human Sciences Meijo University
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Hibino T
Meijo Univ. Aichi Jpn
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Hibino Takashi
Institute Of Science Meijo University
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Hibino Takashi
Department Of Biochemistry College Of Agriculture Kyoto Prefectural University
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MENG Yu
Res. Inst. Meijo Univ.
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Wang Yumei
Faculty of Agriculture, Meijo University
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Meng Yu-Ling
Research Institute of Meijo University
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Nii Naosuke
Faculty of Agriculture, Meijo University
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WANG Yumei
Fac. Agr. Meijo Univ.
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NII Naosuke
Fac. Agr. Meijo Univ.
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Takabe Teruhiro
Research Institute Meijo University
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Ishikawa Hiroshi
Department Of Public Health Mie University School Of Medicine
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Meng Yuling
Res. Inst. Meijo Univ.
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Higuchi Tatsuji
Laboratory Of Biochemistry Graduate School Of Bioagricultural Sciences Nagoya University
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Higuchi Takashi
Plant Molecular Physiology Research Institute Of Innovative Technology For The Earth (rite)
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Ishikawa H
Fukuyama Univ. Hiroshima Jpn
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Tanaka Yoshito
Department Of Biological Sciences The Nishi Tokyo University
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Ishikawa Hiroshi
Department Of Anatomy Jikei University School Of Medicine
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Tanaka Yoshito
Dept. Chem. Fac. Sci. And Tech. Meijo Univ.
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Ishikawa Hiroshi
Department Of Anatomy Jikai University School Of Medicine
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HIBINO Takashi
Department of Agricultural Chemistry, Kyoto Prefectural University
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