A PHD finger protein involved in both the vernalization and photoperiod pathways in Arabidopsis
A PHD finger protein involved in both the vernalization and photoperiod pathways in Arabidopsis
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DOI：
10.1101/gad.1493306
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发表时间：
2006-12-01
影响因子：
10.5
通讯作者：
Amasino, Richard M.
中科院分区：
文献类型：
--
作者：
Sung, Sibum;Schmitz, Robert J.;Amasino, Richard M.
正确的开花时间对成功繁殖至关重要。对日照长度变化和暴露于寒冷的季节性线索的感知分别通过光周期和春化途径影响许多植物物种的开花时间。在这里，我们表明，植物同源结构域（PHD）指蛋白，VIN 3-LIKE 1（VIL 1），参与光周期和春化途径在拟南芥通过调节相关的花抑制基因FLOWERLOCUS C（FLC）和FLOWERLOCUS M（FLM）的表达。在春化途径中，VIL 1沿着与春化不敏感3（VIN 3）一起，对于与表观遗传沉默状态和获得花的能力相关的FLC和FLM染色质的修饰是必需的。此外，VIL 1以光周期依赖性方式独立于VIN 3调节FLM。
The proper timing of flowering is critical for successful reproduction. The perception of the seasonal cues of day-length changes and exposure to cold influences flowering time in many plant species through the photoperiod and vernalization pathways, respectively. Here we show that a plant homeodomain (PHD) finger-containing protein, VIN3-LIKE 1 (VIL1), participates in both the photoperiod and vernalization pathways in Arabidopsis thaliana by regulating expression of the related floral repressors FLOWERING LOCUS C (FLC) and FLOWERING LOCUS M (FLM). In the vernalization pathway, VIL1, along with VERNALIZATION INSENSITIVE 3 (VIN3), is necessary for the modifications to FLC and FLM chromatin that are associated with an epigenetically silenced state and with acquisition of competence to flower. In addition, VIL1 regulates FLM independently of VIN3 in a photoperiod-dependent manner.