Chemical basis of plant leaf movement.
Chemical basis of plant leaf movement.
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DOI：
10.1093/pcp/pcm060
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发表时间：
2007-07
影响因子：
4.9
通讯作者：
M. Ueda;Yoko Nakamura
中科院分区：
文献类型：
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作者：
M. Ueda;Yoko Nakamura
昼生植物的叶子开放和闭合是有昼夜节律的。这里我们讨论了叶片动态运动的化学机理。已知来自五个不同属的催熟植物含有种特异性的开叶因子和闭叶因子。节律性植物尿叶兰的闭叶因子和开叶因子的相对浓度呈周期性变化，表明节律性运动受两类功能相反的节律调节因子的调控。合合花的一个关闭因子和一个打开因子，当与荧光染料连接时，都特异性地标记了pluvini的运动细胞。pluvini的膜部分含有210和180 kDa的蛋白质，与决明子的叶片打开因子结合。这些蛋白质的分子鉴定正在进行中。
Nyctinastic plants open and close leaves with a circadian rhythm. Here we discuss chemical aspects of the mechanism of nyctinastic leaf movement. Nyctinastic plants from five different genera are known to contain species-specific leaf-opening and leaf-closing factors. The relative concentrations of leaf-closing and leaf-opening factors of the nyctinastic plant Phyllanthus urinaria change circadianly, suggesting that nyctinastic movement is regulated by two classes of circadianly regulated factors with opposing functions. A closing and an opening factor of Albizzia, when linked to a fluorescent dye, both specifically labeled motor cells of pluvini. A membrane fraction of pluvini contains proteins of 210 and 180 kDa that bind to a leaf-opening factor of Cassia mimosoides. The molecular identification of these proteins is underway.