在布拉西卡作物中使用基于BoCENH3的平分类感应系统创建CMS线的一步创建CMS线
Fengqing Han1, Xiaoli Zhang2, Yuxiang Liu1,3
1State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China.
Nature plants
|March 19, 2024
概括
一种新方法使用 in vivo 父亲平分体诱导 (HI) 来产生Brassica oleracea的肥沃和细胞质男性不育性 (CMS) 线. 这种基于CRISPR/Cas9的系统通过更高效地创建双倍平分体 (DH) 线来加速作物育种.
科学领域:
- 植物遗传学和育种.
- 分子生物学分子生物学
- 提高作物质量 提高作物质量
背景情况:
- 细胞质男性不育性 (CMS) 对于许多作物中异质化利用至关重要,但开发CMS线通常是耗时且昂贵的.
- 双倍平分体 (DH) 技术加速了肥沃线的生成,但CMS线缺乏类似的快速方法.
研究的目的:
- 开发一种高效的方法,在Brassica oleracea中产生 homozygous肥沃和CMS线.
- 为了利用 in vivo 父亲平分体诱导 (HI) 快速生产繁殖系.
- 为加速作物繁殖建立一种新的双倍平分体 (DH) 技术.
主要方法:
- 用CRISPR/Cas9创建框架内删除并恢复Brassica oleracea中的BoCENH3的框架转移突变.
- 突变系被用来通过外交诱导父性单体.
- 用CMS细胞质生成了哈普洛伊德诱导 (HI) 线,以产生同卵性CMS线.
主要成果:
- 开发的基于BoCENH3的哈普洛伊德诱导系统成功生成了父亲的哈普洛伊德.
- 同卵性CMS线在单个步骤中使用HI系统与CMS细胞质有效地产生.
- 这种方法显著加速了必要的繁殖系的产生.
结论:
- 基于BoCENH3的体内平分体诱导系统提供了一种新且高效的方法,用于生成肥沃和CMS线.
- 这项技术提供了一种新的双倍哈普洛伊德 (DH) 策略,以加快布拉西卡 (Brassica) 和潜在的其他作物的育种计划.
- 该系统克服了CMS线路开发的传统背十字方法的局限性.
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