Identification and functional characterization of SOC1-like genes in Pyrus bretschneideri
Identification and functional characterization of SOC1-like genes in Pyrus bretschneideri
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Pyrus bretschneideri SOC1 样基因的鉴定和功能表征
DOI：
10.1016/j.ygeno.2019.09.011
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发表时间：
2020-03-01
期刊：
影响因子：
4.4
通讯作者：
Wang, Peng
中科院分区：
文献类型：
--
作者：
Liu, Zhe;Wu, Xiaoping;Wang, Peng
开花是梨果生产的先决条件。因此，花芽的发育和花期的控制对梨树至关重要。然而，梨开花的分子机制尚不清楚。SOC 1是拟南芥中MADS-box家族的成员，是开花信号的整合子。本研究在白梨中鉴定了8个SOC 1类基因，并分析了它们的基本信息和表达模式。一些梨SOC 1类基因在叶片中受光周期调控。在梨花芽发育过程中，其表达模式具有多样性。梨SOC 1-like基因PbSOC 1d和PbSOC 1g在拟南芥中的过表达可导致早熟开花表型。PbSOCld和PbSOC 1g被鉴定为花分生组织身份基因AtAP 1和AtLFY的激活剂，并促进开花时间。这些结果表明，PbSOC 1d和PbSOC 1g是梨开花时间的启动子，可能与花芽发育有关。
Flowering is a prerequisite for pear fruit production. Therefore, the development of flower buds and the control of flowering time are important for pear trees. However, the molecular mechanism of pear flowering is unclear. SOC1, a member of MADS-box family, is known as a flowering signal integrator in Arabidopsis. We identified eight SOC1-like genes in Pyrus bretschneideri and analyzed their basic information and expression patterns. Some pear SOC1-like genes were regulated by photoperiod in leaves. Moreover, the expression patterns were diverse during the development of pear flower buds. Two members of the pear SOC1-like genes, PbSOC1d and PbSOC1g, could lead to early flowering phenotype when overexpressed in Arabidopsis. PbSOCld and PbSOC1g were identified as activators of the floral meristem identity genes AtAP1 and AtLFY and promote flowering time. These results suggest that PbSOC1d and PbSOC1g are promoters of flowering time and may be involved in flower bud development in pear.