湖北农业科学 ›› 2022, Vol. 61 ›› Issue (4): 24-28.doi: 10.14088/j.cnki.issn0439-8114.2022.04.004

• 育种·栽培 • 上一篇    下一篇

sm-Ngt1基因水稻遗传稳定性分析

夏栋, 卢卫, 张俊, 谭艳平, 刘学群, 王春台   

  1. 中南民族大学生命科学学院/生物技术国家民委重点实验室/武陵山区特色资源植物种质保护与利用湖北省重点实验室,武汉 430074
  • 收稿日期:2021-03-01 出版日期:2022-02-25 发布日期:2022-03-18
  • 通讯作者: 王春台,女,湖南沅江人,教授,博士,主要从事水稻抗性分子遗传学研究,(电话)15971489968(电子信箱)wangchuntai@mail.scuec.edu.cn。
  • 作者简介:夏 栋(1991-),男,湖北孝感人,在读硕士研究生, 研究方向为遗传学,(电话)17664162406(电子信箱)857923023@qq.com。
  • 基金资助:
    抗病转基因新品种培育专项(2016ZX08001002-002)

Analysis of genetic stability of rice transformed with sm-Ngt1

XIA Dong, LU Wei, ZHANG Jun, TAN Yan-ping, LIU Xue-qun, WANG Chun-tai   

  1. College of Life Science, South-Central University for Nationalities/Key Lab for Biotechnology of State Ethnic Affairs Commission/Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China, Wuhan 430074,China
  • Received:2021-03-01 Online:2022-02-25 Published:2022-03-18

摘要: 为检测转sm-Ngt1基因株系后代的遗传稳定性,对连续2年种植的15个转sm-Ngt1基因T4代水稻株系进行了阳性鉴定,并以农业部要求的9对引物对转基因标记物进行检测,同时对其农艺性状进行了统计。结果显示,15个转基因株系中,编号1、3、5、7-9、11-15这11个转基因株系中含有sm-Ngt1基因,除编号8株系外,sm-Ngt1基因在其余10个株系中均能稳定遗传;在9对检测标记物引物中5对能扩增出特异性条带,其中3对引物(NOS-F1/NOS-R1、T35S-F1/T35S-R1、NPTF68/NPTR356)在所有转基因水稻株系后代中(T5、T6代)都能扩增出特异性条带,2对引物(35S-F1/35S-R1、HPTF226/HPTF69)检测结果与sm-Ngt1检测结果相同。结果表明编号1、3、5、7、9、11-15的10个转基因株系中含有35S启动的 sm-Ngt1基因和HPT基因能稳定遗传,且这些转基因株系生育期、株高、结实率及千粒重与受体品种之间差异不显著。

关键词: sm-Ngt1, 水稻, 遗传稳定性, 农艺性状

Abstract: To detect the genetic stability of the offspring of the transgenic with sm-Ngt1 plant lines, 15 T4 rice lines transformed with sm-Ngt1 gene were planted, the positive plants were identified, the genetically modified markers were tested with 9 primer pairs required by the ministry of agriculture and the agronomic trait was counted for two consecutive years. The results showed that the sm-Ngt1 was found in 11 genetically modified rice lines numbered 1, 3, 5, 7-9, 11-15 in the 15 lines, and in the another 10 lines except numbered 8 the sm-Ngt1 was genetically stable. There were 5 of 9 primer pairs of detecting markers with amplification strips, of which there were 3 primer pairs NOS-F1/NOS-R1, T35S-F1/T35S-R1, NPTF68/NPTR356 with specific bands in all genetically modified offspring (T5 and T6 generations), and the test results for 2 primer pairs (35S-F1/35S-R1and HPTF226/HPTF69) were the same as for sm-Ngt1. These results demonstrated that the 10 genetically modified rice lines numbered 1, 3, 5, 7, 9, 11-15 contained the 35S-sm-Ngt1 and HPT were able to maintain stable genetics, and there was no significant difference in growth period, plant height, seeding rate and thousand grain weight between the modified lines with sm-Ngt1 and the receptor.

Key words: sm-Ngt1, rice, genetic stability, agronomic trait

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