PbCOL8 is a clock-regulated flowering time repressor in pear
PbCOL8 is a clock-regulated flowering time repressor in pear
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PbCOL8 是梨中时钟调节的开花时间抑制因子
DOI：
10.1007/s11295-017-1188-y
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发表时间：
2017
影响因子：
2.4
通讯作者：
Wu JY
中科院分区：
文献类型：
--
作者：
Wang Peng;Liu Zhe;Cao Peng;Liu Xueying;Wu Xiaoping;Qi Kaijie;Zhang Shaoling;Wu Juyou;Zhang SL;Wu JY
花的转变受多种内源和外源因素的控制。在许多物种中，COL（类constans）基因整合光和生物钟信号来调节开花时间。然而，人们对多年生木本植物中的胶原蛋白知之甚少。在此，我们鉴定出梨（Pyrus bretschneideri）中的15pbcolin。通过蛋白质序列的系统进化树分析，将pbcol分为3类。多序列比对分析显示，所有PbCOL成员均存在保守的B-box和CCT （CO， CO-like和TOC1）结构域。这表明PbCOLs可能与其他物种一样具有保守功能。发现6个pbcols同时受生物钟和光周期的调节。在这里，我们发现PbCOL8，组2的成员，抑制开花信号积分器ftandsoc1，并可以抑制开花时间。这些发现将有助于阐明梨花的形成机制。
The floral transition is controlled by diverse endogenous and exogenous cues. In many species,COL(CONSTANS-like) genes integrate light and circadian clock signals to regulate flowering time. However, little is known aboutCOLsin perennial woody plants. Here, we identified 15PbCOLsin pear (Pyrus bretschneideri). PbCOLs were classified into three groups by phylogenetic tree analysis using protein sequences. Multiple sequence alignment analysis revealed conserved B-box and CCT (CO, CO-like, and TOC1) domains in all PbCOL members. This result suggested that PbCOLs might possess conserved functions as other species. SixPbCOLswere found to be regulated by both circadian clock and photoperiod. Here, we showed that PbCOL8, a member of group 2, suppressed the flowering signal integratorsFTandSOC1and could repress flowering time. These findings will contribute to elucidation of the mechanism of floral initiation in pear.