Anthocyanin Influence on Water Proton NMR Relaxation Times and Water Contents in Leaves of Evergreen Woody Plants During the Winter

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概要

• 論文の詳細を見る

• An investigation was made to determine the effect of anthocyanin in red-colored evergreen leaves during the mid-winter on water proton NMR relaxation times (T_1). Water contents, anthocyanin contents and histologic localization of red-coloration in mesophylls were determined by using both red-colored and green leaves from the same branches of Rhododendron. Viburnum and Mahonia, respectively. Although the decrease of water contents in the red-colored leaves in Mahonia was insignificant, decreases in the former two species were clearly observable. T_1 differences between red-colored and green leaves for the three species were insignificant. Increases of anthocyanin contents and histologic localization of red coloration in mesophylls for the red-colored leaves were more pronounced in Rhododendron and Viburnum than in Mahonia. These observations suggest that the pronounced increases of histologic localization of red-colored mesophyll cells and anthocyanin contents in red-colored leaves for the former two species contribute to maintenance of T_1 relaxation times in spite of the marked decrease of water contents in leaves. It is assumed that the increase of localization areas of red-colored parenchymatous cells in mesophylls is more effective than the total contents of anthocyanins in leaves towards the maintenance of the T_1 level in red-colored leaves, and this appears to be dependent on the vacuolar compartmentation of anthocyanin in mesophyll cells.

• 日本植物生理学会の論文

著者

• Toki Kenjiro

  Floriculture Laboratory Department Of Horticulture Minami-kyushu University

• Iwaya-inoue Mari

  Biological Laboratory College Of General Education Kyushu University

• KAKU Shosuke

  Biological Laboratory, College of General Education, Kyushu University

• Kaku Shosuke

  Biological Laboratory College Of General Education Kyushu University

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