湖北农业科学 ›› 2020, Vol. 59 ›› Issue (20): 35-38.doi: 10.14088/j.cnki.issn0439-8114.2020.20.008

• 育种栽培 • 上一篇    下一篇

SSIIIa基因在云南高抗性淀粉特种稻的遗传变异

李霞, 杜娟, 杨晓梦, 普晓英, 杨加珍, 曾亚文   

  1. 云南省农业科学院生物技术与种质资源研究所,昆明 650205
  • 收稿日期:2020-03-16 出版日期:2020-10-25 发布日期:2020-12-04
  • 通讯作者: 曾亚文,男,二级研究员,博士,主要从事功能作物育种研究,(电子信箱)zengyw1967@126.com。
  • 作者简介:李霞(1981-),女,河南获嘉人,助理研究员,博士,主要从事功能作物分子育种研究,(电话)15398480628(电子信箱)lixia_napus@163.com。

Genetic variation of SSIIIa gene in Yunnan special rice with high resistant starch

LI Xia, DU Juan, YANG Xiao-meng, PU Xiao-ying, YANG Jia-zhen, ZENG Ya-wen   

  1. Biotechnology and Germplasm Resources Institute,Yunnan Academy of Agricultural Sciences,Kunming 650205,China
  • Received:2020-03-16 Online:2020-10-25 Published:2020-12-04

摘要: 对云南省高抗性淀粉特种稻品系及功米系列品种进行SSIIIa基因已报道剪接位点SNP检测,结果显示,云南省高抗性淀粉材料未出现已报道的剪接位点SNP突变。进一步对云南高抗性淀粉特种稻SSIIIa基因的序列进行遗传变异分析,共发现SNP遗传变异位点59个,插入缺失变异位点6个。其中,分布于基因编码区域的SNP位点18个,非同义变异12个。分析这些非同义变异位点在6份高抗性淀粉特种稻材料与云南省地方对照品种的差异,结果显示6份高抗性淀粉特种稻材料与对照品种的差异,主要为籼粳稻之间的差异,只有功米2号存在SNP特异性变异。

关键词: SSIIIa基因, 抗性淀粉, 水稻, 遗传变异

Abstract: The reported SNP splicing site of SSIIIa gene was detected on Yunnan special rice lines with high resistant starch and “Gongmi”series of varieties.The results showed that there was no reported splicing site SNP mutation in Yunnan high resistant starch materials.Furthermore,genetic variation analysis of SSIIIa gene sequence of Yunnan high-resistant starch special rice was conducted,and a total of 59 genetic variation sites of SNP were found,and 6 deletion/inserted mutation sites were detected.Among them,18 SNPs were distributed in the gene coding region,and 12 SNPs were non-synonymous variants.In addition,the differences of these non-homogenous variation loci between six high-resistant starch special rice materials and the local control varieties in Yunnan were analyzed.The results showed that the differences between six high-resistant starch special rice materials and the control varieties were mainly between indica and japonica rice,only Gongmi No.2 had snp-specific variation.

Key words: SSIIIa gene, resistant starch, rice, genetic variation

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