Colour-enhancing protein in blue petals - Spectacular morning glory blooms rely on a behind-the-scenes proton exchanger.
Colour-enhancing protein in blue petals - Spectacular morning glory blooms rely on a behind-the-scenes proton exchanger.
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DOI：
10.1038/35036683
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发表时间：
2000-10-05
期刊：
影响因子：
64.8
通讯作者：
Iida, S
中科院分区：
文献类型：
--
作者：
Fukada-Tanaka, S;Inagaki, Y;Iida, S
蓝色花的着色取决于适当花青素色素的产生、金属离子和共色素的存在以及液泡pH。液泡pH的增加增强蓝色着色，但是对于负责提高液泡pH值的蛋白质知之甚少。在这里，我们展示了一个突变的紫花日本牵牛花，在编码液泡Na+/H+交换器的基因中携带隐性突变的Ipomoea nil植物不能增加其液泡pH以产生正常的亮蓝色花瓣。
The coloration of blue flowers depends on the production of the appropriate anthocyanin pigments, the presence of metal ions and co-pigments, and the vacuolar pH. An increase in vacuolar pH enhances blue coloration,, but little is known about the proteins responsible for raising the vacuolar pH. Here we show that a mutant purple-flowering Japanese morning glory (Ipomoea nil) plant that carries a recessive mutation in the gene encoding a vacuolar Na+/H+-exchanger is unable to increase its vacuolar pH to create the normal bright blue petals.