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Sino-Japanese cooperative studies on the genetics differentiation in the plants and animal in China

中日合作研究中国动植物遗传分化

基本信息

批准号：
01044149
负责人：
MORIWAKI Kazuo
金额：
$ 10.94万
依托单位：
National Institute of Genetics
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1991
项目状态：
已结题

项目摘要

Wild mouse research project :From genetical and geographical viewpoints, species Mus musculus, house mouse, can be classified four subspecies groups, domesticus, bactrianus, castaneus and musculus. In China, however, the geographical distribution of these subspceles groups has never been investigated from the genetical viewpoint. During three years from 1989 to 1991, we have surveyed the genetic variations in the Chinese wild mice. RFLPs in the mitochondrial DNA and ribosomal DNA of those mice clearly demonstrated that the musculus subsopecies group inhabits in the north of Chong Jlang River and the castaneus one in the south of the river. Furthermore, castaneus type mtDNA and rDNA were observed in the northeastern region of China and Primorye region of Russia. This kind of distribution is something similar to that of the Japanese wild mice. In the northwestern region of China, a new variant allele of hemoglobin-beta chain gene was widely observed. We designated it "wl" and isolated this new allele as a DNA to sequence it.Wild rice research project :It has been long recognized that wild rice in China is necessary to be examined for understanding of the origin of cultivated rice. Until recently, information on wild rice in China was quite limited. This study was intended to survey genetic variation in the northernmost population of the wild ancestral species which occurs at Dongxian (28. lﾟN), Jiangxi, China. Ribosomal DNA spacer-length variations revealed that Dongxiang wild rice frequently carries Japonica specific variants which were seldom found in wild rice of tropical regions. The plants are of perennial type and they wee proved to be wild and not hybrid derivatives. This suggests that wild rice in China had a significant role in the domestication of Japonica type. Extensive surveys of variations in cytoplasm and SINE (short interspersed element) are under way.

野鼠研究项目：从遗传学和地理学的角度来看，小鼠、家鼠、家鼠和家鼠可分为四个亚种群：家鼠、双峰鼠、卡氏鼠和肌鼠。然而，在中国中，这些亚囊群的地理分布从未从遗传学的角度进行过调查。从1989年到1991年的三年时间里，我们调查了中国野鼠的遗传变异。线粒体DNA和核糖体DNA的RFLP分析清楚地表明，亚种肌群生活在清江以北，卡氏亚群生活在江南。此外，在俄罗斯东北部的中国地区和滨海地区也观察到了卡萨尼斯型线粒体DNA和rDNA。这种分布与日本野鼠的分布相似。在中国西北地区，广泛观察到一种新的血红蛋白-β链基因变异等位基因。我们将其命名为wl，并分离出这个新的等位基因进行测序。野生稻研究项目：人们早就认识到，为了了解栽培稻的起源，有必要对中国的野生稻进行考察。直到最近，关于中国野生稻的信息还相当有限。本研究旨在调查东县(28)野生祖先物种最北端种群的遗传变异。L，ﾟN)，江西，中国。核糖体DNA间隔区长度的变异表明，东乡野生稻经常携带热带地区野生稻中罕见的京型特异突变体。这些植物是多年生植物，它们被证明是野生的，而不是杂交的衍生品。这说明中国野生稻在驯化粳型水稻中起着重要作用。对细胞质和正弦(短散布元素)的变异的广泛调查正在进行中。