THE PHENOTYPE OF SOME LATE-FLOWERING MUTANTS IS ENHANCED BY A LOCUS ON CHROMOSOME-5 THAT IS NOT EFFECTIVE IN THE LANDSBERG ERECTA WILD-TYPE
THE PHENOTYPE OF SOME LATE-FLOWERING MUTANTS IS ENHANCED BY A LOCUS ON CHROMOSOME-5 THAT IS NOT EFFECTIVE IN THE LANDSBERG ERECTA WILD-TYPE
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DOI：
10.1046/j.1365-313x.1994.6060911.x
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发表时间：
1994-12-01
期刊：
影响因子：
7.2
通讯作者：
PEETERS, T
中科院分区：
文献类型：
--
作者：
KOORNNEEF, M;BLANKESTIJNDEVRIES, H;PEETERS, T
已发现在除兰茨贝格直立（Ler）以外的生态型中描述的晚花突变体是位于第4染色体上的FRI基因座的显性等位基因，该基因座决定了许多极晚生态型的晚花性。显性FRI等位基因的极端迟发性取决于定位在5号染色体顶部的FLC基因座处的显性等位基因。除Ler外，在所有供试的生态型（Col、Ws、S96、Est和Li）中都发现了具有这种效应的FLC等位基因。最有可能的是，相同的基因座赋予发光依赖（Id）突变体迟发性。具有显性FRI等位基因和单基因隐性id突变体的基因型仅稍晚于在FLC位点具有隐性Ler等位基因的基因型。显性FLC等位基因与FRI或与Id突变体组合的基因型对春化反应强烈，这在FLC-Ler背景下效果要差得多。
Late-flowering mutants that have been described in ecotypes other than Landsberg erecta (Ler) have been found to be dominant alleles of the FRI locus located on chromosome 4, which determines lateness in many very late ecotypes. The extreme lateness of dominant FRI alleles depends on dominant alleles at the FLC locus that maps on the top of chromosome 5. FLC alleles with this effect have been found in all ecotypes tested (Col, Ws, S96, Est and Li) except Ler. Most likely the same locus confers lateness to the luminidependens (Id) mutant. Genotypes with a dominant FRI allele and the monogenic recessive id mutant are only slightly later with recessive Ler alleles at the FLC locus. Genotypes where the dominant FLC alleles are combined with FRI or with the Id mutant, are strongly responsive to vernalization, which is much less effective in the FLC-Ler background.