光敏色素调控芥菜子叶衰老的研究：色素含量和超微结构的变化。
Phytochrome-mediated delay of plastid senescence in mustard cotyledons: changes in pigment contents and ultrastructure.
机构信息
Biologisches Institut II der Universität, Schänzlestrasse 1, D-7800, Freiburg, Federal Republic of Germany.
出版信息
Planta. 1983 Feb;157(1):85-90. doi: 10.1007/BF00394545.
Changes in pigment contents and ultrastructure have followed in cotyledons of mustard (Sinapis alba L.) seedlings during dark-mediated senescence. The seedlings were kept in white light for 7 d, treated with 5 min long wavelength far-red light and then kept in darkness up to 14 d after sowing. Under these conditions the chloroplasts remain stable for 2 d before a sequential plastidal disintegration commences. The data indicate a selective breakdown of the light-harvesting chlorophyll a/b protein. Phytochrome retards the differential loss of chlorophyll a, b and carotenoids and preserves the fine structure of chloroplasts.
在黑暗诱导的衰老过程中，芥菜（Sinapis alba L.）幼苗子叶中的色素含量和超微结构发生了变化。将幼苗在白光下保持 7 天，用 5 分钟长的远红光处理，然后在播种后长达 14 天的时间内保持在黑暗中。在这些条件下，叶绿体在开始进行连续的质体解体之前稳定 2 天。这些数据表明，光捕获叶绿素 a/b 蛋白被选择性地破坏。光敏色素延迟了叶绿素 a、b 和类胡萝卜素的差异损失，并保持了叶绿体的精细结构。
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