A natural mutation in rc reverts white-rice-pericarp to red and results in a new, dominant, wild-type allele:: Rc-g
A natural mutation in rc reverts white-rice-pericarp to red and results in a new, dominant, wild-type allele:: Rc-g
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DOI：
10.1007/s00122-008-0801-8
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发表时间：
2008-08-01
影响因子：
5.4
通讯作者：
Deren, Christopher W.
中科院分区：
文献类型：
--
作者：
Brooks, Steven A.;Yan, Wengui;Deren, Christopher W.
Rc基因座调节米糠层的色素沉着，并且在作物的驯化期间发生对rc等位基因（白色果皮）的选择。白色麸皮现在在全世界水稻种植区的栽培品种中普遍存在。我们确定了一个新的等位基因，出现了自然突变的rc假基因的品种'井'。突变恢复了基因的阅读框架，并将麸皮层色素沉着恢复为红色（野生型）。通过对来自红色种子的植物中的Rc基因座进行测序，并在分离群体中进行连锁分析，我们能够证明rc内的突变导致新的显性野生型等位基因Rc-g。
The Rc locus regulates pigmentation of the rice bran layer, and selection for the rc allele (white pericarp) occurred during domestication of the crop. White bran is now ubiquitous among cultivated varieties throughout rice growing regions of the world. We identified a new allele that arose by natural mutation within the rc pseudogene of the cultivar 'Wells'. The mutation restored the reading frame of the gene, and reverted the bran layer pigmentation to red (wild-type). By sequencing the Rc locus in plants derived from red seeds, and linkage analysis in a segregating population, we were able to demonstrate that mutation within rc resulted in the new, dominant, wild-type allele Rc-g.