Two FLX family members are non-redundantly required to establish the vernalization requirement in Arabidopsis.

Two FLX family members are non-redundantly required to establish the vernalization requirement in Arabidopsis.
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DOI:
10.1038/ncomms3186
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发表时间:
2013
影响因子:
16.6
通讯作者:
Amasino, Richard M.
Amasino, Richard M.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lee, Joohyun;Amasino, Richard M.

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对拟南芥春化需求的自然遗传变异研究发现,两个基因,即friida (FRI)和开花位点C (FLC),是决定拟南芥一年四季需要春化的习性的决定因素。在这项研究中,我们发现FLC表达因子LIKE 4 (FLL4)在冬季一年生拟南芥植株的FLC上调和春化需求的建立中是必不可少的。FLL4是FLC EXPRESSOR (FLX)基因家族的一部分,两者都非冗余参与开花时间控制。FRI、FLL4、FLX和自主通路基因之间的上位性分析表明,FRI 5比FRI 5表现出极大的开花延迟,而其他自主通路基因的突变体则没有,这表明fve对FRI的拮抗作用最大。FLL4可能是激活FLC的含有FRI复合物的新成员。
Studies of natural genetic variation for the vernalization requirement in Arabidopsis have revealed two genes, FRIGIDA (FRI) and FLOWERING LOCUS C (FLC), that are determinants of the vernalization-requiring, winter-annual habit. In this study, we show that FLC EXPRESSOR LIKE 4 (FLL4) is essential for up-regulation of FLC in winter-annual Arabidopsis accessions and establishment of a vernalization requirement. FLL4 is part of the FLC EXPRESSOR (FLX) gene family and both are non-redundantly involved in flowering-time control. Epistasis analysis among FRI, FLL4, FLX and autonomous-pathway genes reveals that FRI fve exhibits an extreme delay of flowering compared to fri fve, but mutants in other autonomous-pathway genes do not, indicating that FVE acts most antagonistically to FRI. FLL4 may represent a new member of a FRI-containing complex that activates FLC.
DOI: 10.1105/tpc.105.034645
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