浙江农业学报 ›› 2026, Vol. 38 ›› Issue (1): 17-23.DOI: 10.3969/j.issn.1004-1524.20250089

• 作物科学 • 上一篇    下一篇

利用CRISPR/Cas9技术创制糯稻新种质

潘月云(), 黄雨青, 丁正权, 施扬, 黄海祥, 李白()   

  1. 嘉兴市农业科学研究院, 浙江 嘉兴 314016
  • 收稿日期:2025-02-07 出版日期:2026-01-25 发布日期:2026-02-11
  • 作者简介:李白,E-mail:libaia@yeah.net
    潘月云,从事水稻育种工作。E-mail:panyueyun3160@163.com
  • 通讯作者: 李白
  • 基金资助:
    嘉兴市科技计划项目(2023AZ11007);嘉兴市科技计划项目(2024AZ10003)

Generation of new glutinous rice germplasms via CRISPR/Cas9 technology

PAN Yueyun(), HUANG Yuqing, DING Zhengquan, SHI Yang, HUANG Haixiang, LI Bai()   

  1. Jiaxing Academy of Agricultural Sciences, Jiaxing 314016, Zhejiang, China
  • Received:2025-02-07 Online:2026-01-25 Published:2026-02-11
  • Contact: LI Bai

摘要:

稻米直链淀粉含量直接影响其蒸煮食味品质,该性状主要由Waxy(Wx)基因控制。本研究基于Wx基因上SNP的表型关联分析,选择其第3、第4外显子设计编辑靶点。利用CRISPR/Cas9技术,以水稻品种嘉禾香1号为受体,对Wx基因进行编辑。经PCR与Sanger测序验证,获得4个不同类型的双位点纯合突变体。4个双位点纯合T2代突变体株系的稻米均呈蜡质状,其直链淀粉含量由野生型的16.9%降至0.83%~1.23%,达到糯稻水平。结果表明,利用CRISPR/Cas9技术可快速创制优质香糯型水稻种质资源。

关键词: 水稻, Wx基因, CRISPR/Cas9, 直链淀粉

Abstract:

Amylose content (AC) is a key determinant of rice eating and cooking quality, primarily controlled by the Waxy gene (Wx). Based on association analysis results, two guide RNAs for the CRISPR/Cas9 system were designed to target exons 3 and 4 of the Wx gene. The cultivar Jiahexiang 1 was selected for genome editing. Four T2 generation homozygous mutant lines with biallelic edits were obtained, as confirmed by PCR and Sanger sequencing, all exhibiting a waxy phenotype. The amylose content in these homozygous lines significantly decreased from 16.9% to 0.83%-1.23%, reaching glutinous rice levels. This study demonstrated that CRISPR/Cas9 is an efficient system for creating fragrant glutinous rice germplasm resources.

Key words: Oryza sativa L., Wx gene, CRISPR/Cas9, amylose

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