Synchrony between flower opening and petal-color change from red to blue in morning glory, Ipomoea tricolor cv

• YOSHIDA Kumi

  Graduate School of Information Science, Nagoya University

• MIKI Naoko

  Graduate School of Information Science, Nagoya University

• MOMONOI Kazumi

  Graduate School of Information Science, Nagoya University

• KAWACHI Miki

  Graduate School of Information Science, Nagoya University

• KATOU Kiyoshi

  Graduate School of Science, Nagoya University

• OKAZAKI Yoshiji

  Department of Biology, Osaka Medical College

• UOZUMI Nobuyuki

  Graduate School of Engineering, Tohoku University

• MAESHIMA Masayoshi

  Graduate School of Bioagricultural Sciences, Nagoya University

• KONDO Tadao

  Graduate School of Information Science, Nagoya University Graduate School of Bioagricultural Sciences, Nagoya University

書誌事項

タイトル別名

• Synchrony between flower opening and petal-color change from red to blue in morning glory, Ipomoea tricolor cv. Heavenly Blue

抄録

Petal color change in morning glory Ipomoea tricolor cv. Heavenly Blue, from red to blue, during the flower-opening period is due to an unusual increase in vacuolar pH (pHv) from 6.6 to 7.7 in colored epidermal cells. We clarified that this pHv increase is involved in tonoplast-localized Na⁺/H⁺ exchanger (NHX). However, the mechanism of pHv increase and the physiological role of NHX1 in petal cells have remained obscure. In this study, synchrony of petal-color change from red to blue, pHv increase, K⁺ accumulation, and cell expansion growth during flower-opening period were examined with special reference to ItNHX1. We concluded that ItNHX1 exchanges K⁺, but not Na⁺, with H⁺ to accumulate an ionic osmoticum in the vacuole, which is then followed by cell expansion growth. This function may lead to full opening of petals with a characteristic blue color.<br><br>(Communicated by Ryoji NOYORI, M.J.A.)

収録刊行物

• Ｐｒｏｃｅｅｄｉｎｇｓ　ｏｆ　ｔｈｅ　Ｊａｐａｎ　Ａｃａｄｅｍｙ．　Ｓｅｒ．　Ｂ：　Ｐｈｙｓｉｃａｌ　ａｎｄ　Ｂｉｏｌｏｇｉｃａｌ　Ｓｃｉｅｎｃｅｓ

  Ｐｒｏｃｅｅｄｉｎｇｓ　ｏｆ　ｔｈｅ　Ｊａｐａｎ　Ａｃａｄｅｍｙ．　Ｓｅｒ．　Ｂ：　Ｐｈｙｓｉｃａｌ　ａｎｄ　Ｂｉｏｌｏｇｉｃａｌ　Ｓｃｉｅｎｃｅｓ 85 (6), 187-197, 2009

  日本学士院

キーワード

• ItNHX1
• <i>Ipomoea tricolor</i> cv. Heavenly Blue
• vacuolar pH increase
• K⁺/H⁺ exchange
• cell expansion growth
• flower opening

詳細情報

• CRID: 1390282679124761600
• NII論文ID: 130000138066
• NII書誌ID: AA00785485
• DOI: 10.2183/pjab.85.187
• ISSN: 13492896
• ISSN: 03862208
• NDL書誌ID: 10266490
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I10266490
• Web Site: http://www.jstage.jst.go.jp/article/pjab/85/6/85_6_187/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
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