Heading Time Genes Responsible for the Regional Adaptability of 'Tongil-type Short-culmed Rice Cultivars' Developed in Korea
Heading Time Genes Responsible for the Regional Adaptability of 'Tongil-type Short-culmed Rice Cultivars' Developed in Korea
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负责韩国开发的“统一型短秆稻品种”区域适应性的抽穗期基因
DOI：
10.1270/jsbbs.57.135
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发表时间：
2007
期刊：
影响因子：
2.4
通讯作者：
T. Tanisaka
中科院分区：
文献类型：
--
作者：
Hiroki Saito;Y. Okumoto;T. Teranishi;Y. Qingbo;T. Nakazaki;T. Tanisaka
在大韩民国（韩国），许多高产水稻品种，称为“东日型短秆（TG）品种”，是在20世纪70年代至90年代通过籼粳杂交培育出来的。TG品种均表现出较长的基本营养生长期和较低的光周期敏感性。这种组合的BVG期和PS，类似于现代籼稻品种的低纬度地区，是不存在的韩国或日本粳稻品种。随后的遗传分析表明，TG品种的长BVG期是由于早抽穗期基因lh（t）和Se 1位点的非功能等位基因之间的等位基因构成。TG品种的低PS由该等位基因赋予。序列分析表明，该等位基因与水稻品种“日本晴”的功能等位基因Se 1-n相比，在第2外显子有一个4 bp的缺失，与已知的非功能等位基因Se 1-e在序列上也有差异。我们将这种新的等位基因命名为Se 1-k。lh（t）是位于第8号染色体上的一个新基因。我们在Lh 4位点（晚抽穗-4）将该基因命名为lh 4。由于Se 1-k和lh 4在粳稻品种中均未检测到，因此认为这两个等位基因来源于用作杂交亲本的籼稻品种。
In the Republic of Korea (South Korea), many high-yielding rice cultivars, called ‘Tongil-type short-culmed (TG) cultivars’, were developed by indica-japonica hybridizations in the 1970s–1990s. The TG cultivars all show a long basic vegetative growth (BVG) period and low photoperiod sensitivity (PS). Such a combination of BVG period and PS, similar to those of modern indica cultivars for the low latitudes, was absent either among Korean or among Japanese japonica cultivars. Subsequent genetic analysis revealed that the long BVG period of the TG cultivars was due to the allelic constitution between the early heading time gene lh(t) and a non-functional allele at the Se1 locus. The low PS of the TG cultivars was conferred by this allele. Sequence analysis showed that the non-functional allele harbored a 4-bp deletion in exon 2, compared with the functional allele Se1-n of the rice cultivar ‘Nipponbare’, and differed in sequence from the known nonfunctional allele Se1-e. We designated this novel allele as Se1-k. Also lh(t) was found to be a novel gene located on chromosome 8. We designated this gene as lh4 at the Lh4 locus (Late heading-4). Since both Se1-k and lh4 were not detected in japonica cultivars, it was considered that these two alleles were derived from an indica cultivar(s) used as cross parent(s).
影响因子：
11.6
作者：
Yano, M;Katayose, Y;Sasaki, T
通讯作者：
Sasaki, T