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中国农学通报 ›› 2024, Vol. 40 ›› Issue (26): 22-29.doi: 10.11924/j.issn.1000-6850.casb2023-0549

• 生物科学 • 上一篇    下一篇

一个新的水稻黄绿叶突变体ygl-9108的鉴定与基因定位

刘晓敏(), 孙志广(), 迟铭, 邢运高, 徐波, 李景芳, 刘艳, 卢百关, 王宝祥, 徐大勇()   

  1. 连云港市农业科学院/江苏省现代作物生产协同创新中心,江苏连云港 222000
  • 收稿日期:2023-08-15 修回日期:2023-11-16 出版日期:2024-09-11 发布日期:2024-09-11
  • 通讯作者:
    徐大勇,男,1964年出生,江苏连云港人,研究员,博士,研究方向:农作物新品种选育和推广。通信地址:222002 江苏省连云港市海州区郁州南路与迎宾大道交叉口 连云港市农业科学院,Tel:0518-85807468,E-mail:
    孙志广,男,1989年出生,河南周口人,副研究员,博士,研究方向:水稻遗传育种。通信地址:222002 江苏省连云港市海州区郁州南路与迎宾大道交叉口 连云港市农业科学院,Tel:0518-83081733,E-mail:
  • 作者简介:

    刘晓敏,女,1993年出生,江苏连云港人,研究实习员,学士,研究方向:水稻遗传育种。通信地址:222000 江苏省连云港市海州区郁州南路与迎宾大道交叉口 连云港市农业科学院,Tel:0518-83081733,E-mail:

  • 基金资助:
    国家现代农业产业技术体系建设专项“适合轻简化生产的水稻品种培育”(CARS-01-01A); 江苏省种业振兴揭榜挂帅项目“抗稻瘟病外观透明优质食味早熟晚粳稻新品种培育”(JBGS[2021]039); 连云港市财政专项“水稻粉质突变体m149表型分析及基因定位”(QNJJ2311); “连云港穞稻优异基因的挖掘”(QNJJ2203)

Identification and Gene Mapping of A Novel Yellow-green Leaf Mutant ygl-9108 in Rice

LIU Xiaomin(), SUN Zhiguang(), CHI Ming, XING Yungao, XU Bo, LI Jingfang, LIU Yan, LU Baiguan, WANG Baoxiang, XU Dayong()   

  1. Lianyungang Academy of Agricultural Sciences/Jiangsu Collaborative Innovation Center for Modern Corp Production, Lianyungang, Jiangsu 222000
  • Received:2023-08-15 Revised:2023-11-16 Published:2024-09-11 Online:2024-09-11

摘要:

本研究旨在对水稻黄绿叶突变体ygl-9108进行表型分析和基因定位,为后续图位克隆该叶色相关基因奠定基础。以黄绿叶突变体ygl-9108为试材,利用突变体ygl-9108和‘五山丝苗’杂交的F2群体进行基因定位。结果表明,与野生型相比,突变体的株高、有效穗数、穗长、每穗粒数、结实率、粒宽、千粒重和单株谷重均显著下降,下降比例分别为21.5%、21.2%、14.6%、19.2%、11.0%、10.2%、12.9%和52.2%。透射电镜观察显示,突变体叶肉细胞的叶绿体数量大量减少,类囊体结构异常。遗传分析表明,突变体的表型由一个隐性核基因控制。利用图位克隆方法,ygl-9108被定位于水稻第11号染色体两InDel标记11Y39和11Y45之间,物理距离约为147 kb,该区间内未见有叶色相关基因的报道,表明ygl-9108是一个新的黄绿叶调控基因。本研究结果为ygl-9108的克隆和功能分析奠定了坚实的基础。

关键词: 水稻, 黄绿叶突变体, ygl-9108, 表型鉴定, 农艺性状, 基因定位, 透射电镜, 叶绿体, 隐性核基因, 图位克隆

Abstract:

The research aims to lay the foundation for map-based cloning of the leaf color related gene by analyzing the phenotypic characteristics of a rice yellow-green leaf mutant ygl-9108 and mapping the mutant locus. A yellow-green leaf mutant, named as ygl-9108, was selected as experimental material, and the gene was mapped by using the F2 population derived from the cross between the ygl-9108 mutant and ‘Wushansimiao’. The results showed that the plant height, effective panicle number, panicle length, grain number per panicle, seed setting rate, grain width, 1000-grain weight, and grain weight per plant of the ygl-9108 mutant were all significantly reduced by 21.5%, 21.2%, 14.6%, 19.2%, 11.0%, 10.2%, 12.9%, and 52.2%, respectively, compared with those of the wild type. The observation by transmission electronic microscope (TEM) demonstrated that the number of chloroplasts in mesophyll cells of ygl-9108 plants was greatly reduced, and the lamellar structure of chloroplasts was abnormal. Genetic analysis revealed that the phenotype of mutant was controlled by a single recessive nuclear gene. Using a map-based cloning strategy, ygl-9108 was mapped to a 147 kb region on chromosome 11 between two InDel markers, 11Y39 and 11Y45. No gene related to leaf color has been reported previously in this interval, indicating that ygl-9108 is a new leaf color-related gene. This study lays a solid foundation for further research on gene cloning and function analysis of ygl-9108.

Key words: Oryza sativa L., yellow-green leaf mutants, ygl-9108, phenotypic identification, agronomic trait, gene mapping, transmission electron microscope, chloroplast, recessive nuclear gene, map-based cloning