在Pinus taeda和Abies fraseri中提供CRISPR-Cas核糖蛋白的原生质系统
Barbara M Marques1,2,3, Daniel B Sulis1,2,3, Bethany Suarez1,3
1Forest Biotechnology Group, North Carolina State University, Raleigh, NC 27695, USA.
Plants (Basel, Switzerland)
|April 12, 2025
概括
科学家们开发了一种CRISPR-Cas基因组编辑方法,用于关键的针叶树,如松和弗雷泽树. 这项创新加速了基因改进,增强了森林对气候变化的抵抗力和可持续性.
科学领域:
- 林业和植物科学 林业和植物科学
- 生物技术和基因工程 生物技术和基因工程
背景情况:
- 气候变化对森林生态系统的健康,生产力和木材工业的可持续性构成重大威胁.
- 加强树木生长,发展和适应对于加强生态系统弹性和减轻气候变化影响至关重要.
- 针叶树种的遗传改进对于生态和经济的可持续性至关重要.
研究的目的:
- 建立一种强大的原生质隔离,净化和CRISPR-Cas核糖蛋白 (RNP) 输送方法,用于Pinus taeda和Abies fraseri.
- 为了加速这些经济和生态上重要的针叶树种的遗传改进.
- 为再生基因组编辑森林树木奠定基础,以改善生态系统健康和自然资源可持续性.
主要方法:
- 开发了一种从 *P. taeda* 和 *A. fraseri* 的体质胚胎中分离和净化原生细胞的协议.
- 实现了CRISPR-Cas核糖蛋白 (RNP) 传递到孤立的原生体中.
- 评估了使用向基因 (*P. taeda*中的*phenylalanine ammonia lyase*, *A. fraseri*中的*phytoene desaturase*) 的传递效率和基因编辑效率.
主要成果:
- 从体胚胎中成功分离了纯化的原生质,产生了高达2 × 10^6的原生质/g的组织.
- 蛋白质和核酸在原生质中达到高达13.5%的高传递效率.
- 证明了无DNA的基因组编辑,其效率为P. taeda的*氨酸氨基酶*的2.1%和A. fraseri*的*植物脱酶*的0.3%.
结论:
- 建立了一个功能性的CRISPR-Cas RNP传递系统,用于*P. taeda*和*A. fraseri*原生体中的DNA自由基因组编辑.
- 这个系统具有显著的潜力,可以增强针叶树的有价值特征.
- 为未来的基因组编辑树木再生提供基础技术,以加强森林的弹性和可持续性.
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