LIGHT-STIMULATED APICAL HOOK OPENING IN WILD-TYPE ARABIDOPSIS-THALIANA SEEDLINGS
LIGHT-STIMULATED APICAL HOOK OPENING IN WILD-TYPE ARABIDOPSIS-THALIANA SEEDLINGS
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DOI：
10.1104/pp.101.2.567
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发表时间：
1993-02-01
期刊：
影响因子：
7.4
通讯作者：
HANGARTER, RP
中科院分区：
文献类型：
--
作者：
LISCUM, E;HANGARTER, RP
顶端钩打开和子叶展开是双子叶幼苗脱黄过程中发生的特征反应。黄化拟南芥幼苗中光刺激的顶端钩张开和子叶展开似乎涉及多个光传感系统的活动。红光、远红光和蓝光都能有效刺激拟南芥的这些反应。红光和低通量蓝光对钩子张开的刺激是感应性的、远红光可逆的，并且表现出交互性，这是许多低通量依赖性光敏色素介导的反应的特征。在长期光处理过程中，远红光和高通量蓝光似乎可以通过高辐照度响应系统刺激钩子打开和子叶展开。虽然光敏色素高辐照度响应系统可能介导远红光的响应，但对高通量蓝光的响应可能是由蓝光特异性光传感系统介导的。
Apical hook opening and cotyledon unfolding are characteristic responses that occur during deetiolation of dicotyledonous seedlings. Light-stimulated apical hook opening and cotyledon unfolding in etiolated Arabidopsis thaliana seedlings appears to involve the activities of multiple photosensory systems. Red, far-red, and blue light are all effective in stimulating these responses in Arabidopsis. Stimulation of hook opening by red light and low fluence blue light is inductive, far-red reversible, and exhibits reciprocity, as is characteristic of many low fluence-dependent phytochrome-mediated responses. Far-red and high-fluence blue light appear to stimulate hook opening and cotyledon unfolding through high-irradiance-response systems during long-term light treatments. Although a phytochrome high-irradiance-response system presumably mediates the responses in far-red light, the responses to high-fluence blue light may be mediated by a blue light-specific photosensory system.