Genetic characterization of late-flowering traits induced by DNA hypomethylation mutation in Arabidopsis thaliana

被引:100
作者
Kakutani, T [1 ]
机构
[1] Natl Inst Agrobiol Resources, Dept Mol Genet, Tsukuba, Ibaraki 305, Japan
关键词
D O I
10.1046/j.1365-313x.1997.12061447.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Arabidopsis DNA hypomethylation mutation, ddm1, results in a variety of developmental abnormalities by slowly inducing heritable lesions at unlinked loci. Here, late-flowering traits observed at high frequencies in independently-established ddm1 lines were genetically characterized. In all of the four late-flowering lines examined the traits were dominant and mapped to the same chromosomal region, which is close or possibly identical to the FWA locus. The ddm1-induced phenotypic onsets are apparently not random mutation events, but specific to a group of genes, suggesting the underlying epigenetic mechanism. The DNA methylation mutant provide useful system for identifying epigenetically-regulated genes important for plant development.
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页码:1447 / 1451
页数:5
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