Late-flowering genes interact with early-flowering genes to regulate flowering time in Arabidopsis thaliana
Late-flowering genes interact with early-flowering genes to regulate flowering time in Arabidopsis thaliana
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DOI：
10.1093/oxfordjournals.pcp.a029596
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发表时间：
1999-07-01
影响因子：
4.9
通讯作者：
Yang, CH
中科院分区：
文献类型：
--
作者：
Chon, ML;Yang, CH
构建了3个早花突变体1-1、2-1、3-1、(ELF 1-1、2-1、3-1)和5个不同晚花突变体gi-1、ft-1、fwa-1、1d-1和fca-9之间的双突变体，并对其表型进行了分析。所有组合中的双突变体都表现出与各自晚花亲本相似的晚花表型，在开花时间和营养叶数上都与各自的亲本相似。结果表明，5个晚花突变体对所测试的所有3个早花突变体都是上位性的，这种上位性关系表明Elf1、elF2和ELF3基因在这5个晚花基因的上游发挥作用，无论它们是在自主途径还是光周期途径中发挥作用。这三个早花基因可能会对大多数晚花基因的活性产生负面影响，从而影响拟南芥营养向生殖转变的时间。
To investigate the genetic mechanisms regulating the transition from the vegetative to reproductive growth in Arabidopsis, double mutants between three different early-flowering mutants, early flowering 1-1, 2-1, 3-1, (elf 1-1, 2-1, 3-1) and five different late-flowering mutants, gi-1, ft-1, fwa-1, ld-1, and fca-9, were constructed and phenotypes analyzed. Double mutants in all combinations displayed the late-flowering phenotypes which resembled their respective late-flowering parents in both flowering time and the number of vegetative leaves produced. The results indicate that five late-flowering mutants are epistatic to all three early-flowering mutants tested here, This epistatic relationship suggests that ELF1, ELF2, and ELF3 genes function upstream of these five late-flowering genes no matter if they are functioning in autonomous or photoperiod pathways. These three early-flowering genes may negatively modify the activity of most late-flowering genes to influence the time of the vegetative-to-reproductive transition in Arabidopsis.