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首页> 外文期刊>Proceedings of the Japan Academy, Series B. Physical and Biological Sciences >Synchrony between flower opening and petal-color change fromred to blue in morning glory, Ipomoea tricolor cv. Heavenly Blue
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Synchrony between flower opening and petal-color change fromred to blue in morning glory, Ipomoea tricolor cv. Heavenly Blue

机译：花的开放与花瓣的颜色之间的同步从牵牛花，三色堇菜Cv从红色变为蓝色。天蓝

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摘要

Petal color change in morning glory Ipomoea tricolor cv. Heavenly Blue, fromred 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 tono-plast-localized Na+/H+ exchanger (NHX). However, the mechanism of pHv increase and the phys-iological role of NHX1 in petal cells have remained obscure. In this study, synchrony of petal-colorchange 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 ItNHX1exchanges K~+, but not Na~+, with H~+to accumulate an ionic osmoticum in the vacuole, which isthen followed by cell expansion growth. This function may lead to full opening of petals with acharacteristic blue color.
机译：牵牛花番薯三色简历中的花瓣颜色变化。花朵开放期间，从红色到蓝色的天堂蓝是由于有色表皮细胞中液泡pH（pHv）从6.6异常升高到7.7。我们阐明，pHv的增加与局部定位于Tono-plast的Na + / H +交换剂（NHX）有关。然而，pHv增加的机制和NHX1在花瓣细胞中的生理作用仍然不清楚。在这项研究中，特别参考ItNHX1，研究了花瓣的颜色从红色到蓝色的同步变化，pHv增加，K +积累和开花期间的细胞膨胀生长。我们得出的结论是，ItNHX1与K〜+交换K〜+，而不与Na〜+交换，从而在液泡中积累离子渗透液，然后细胞膨胀生长。此功能可能会导致特征性蓝色的花瓣完全张开。

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