Instituto de Agrobiotecnología y Biología Molecular (IABIMO, CONICET-INTA), Argentina; Instituto de Genética (IGEAF, INTA), Argentina.
Instituto de Agrobiotecnología y Biología Molecular (IABIMO, CONICET-INTA), Argentina; Instituto de Genética (IGEAF, INTA), Argentina.
Plant Sci. 2023 Oct;335:111809. doi: 10.1016/j.plantsci.2023.111809. Epub 2023 Jul 22.
The CRISPR/Cas system is a highly efficient and versatile tool for editing plant genomes, with the potential to accelerate breeding programs and improve the sustainability of food production. Nevertheless, technical limitations delay the rapid spread of the CRISPR/Cas system benefits in agriculture. The natural features of plant species, including reproductive behavior, ploidy levels, genetic diversity, and generation times, can significantly impact the introgression of edited traits into elite germplasms. The production and selection of edited events require the same level of effort as those of their transgenic equivalents. Additionally, edited alleles tend to be recessive or not fully dominant, which differs from dominant transgenic events. To accelerate the introgression of edited events into conventional and transgenic varieties, we suggest utilizing edits on single-copy genes that induce dominant mutations. In the absence of new, simple traits that provide exceptional economic benefits for large companies, like herbicide tolerance in transgenic crops, we propose the emergence of particular public grants for edited variety productions, especially when the introgression shows a high level of technical feasibility. In the context of climate change, these public actions must be taken quickly to alleviate significant reductions in crop production.
CRISPR/Cas 系统是编辑植物基因组的一种高效、多功能工具,具有加速育种计划和提高粮食生产可持续性的潜力。然而,技术限制延迟了 CRISPR/Cas 系统在农业中的快速传播。植物物种的自然特征,包括繁殖行为、倍性水平、遗传多样性和世代时间,会显著影响编辑性状向优良种质的渗入。编辑事件的产生和选择需要与它们的转基因等同物一样的努力。此外,编辑等位基因往往是隐性的或不完全显性的,这与显性转基因事件不同。为了加速编辑事件向常规品种和转基因品种的渗入,我们建议利用诱导显性突变的单拷贝基因进行编辑。在没有新的简单性状为大公司提供特殊经济利益的情况下,例如转基因作物的除草剂耐受性,我们建议为编辑品种的生产提供特定的公共拨款,特别是当渗入具有高水平的技术可行性时。在气候变化的背景下,必须迅速采取这些公共行动,以缓解作物产量的大幅减少。