生物
清脆的
多路复用
基因组编辑
加倍单倍体
倍性
遗传学
基因
Cas9
基因分型
突变
计算生物学
突变体
等位基因
基因型
作者
Lennert Impens,Christian Damián Lorenzo,Wout Vandeputte,Pieter Wytynck,Kévin Debray,Jari Haeghebaert,Denia Herwegh,Thomas B. Jacobs,Tom Ruttink,Hilde Nelissen,Dirk Inzé,Laurens Pauwels
摘要
Summary A major advantage of using CRISPR/Cas9 for gene editing is multiplexing, that is, the simultaneous targeting of many genes. However, primary transformants typically contain hetero‐allelic mutations or are genetic mosaic, while genetically stable lines that are homozygous are desired for functional analysis. Currently, a dedicated and labor‐intensive effort is required to obtain such higher‐order mutants through several generations of genetic crosses and genotyping. We describe the design and validation of a rapid and efficient strategy to produce lines of genetically identical plants carrying various combinations of homozygous edits, suitable for replicated analysis of phenotypical differences. This approach was achieved by combining highly multiplex gene editing in Zea mays (maize) with in vivo haploid induction and efficient in vitro generation of doubled haploid plants using embryo rescue doubling. By combining three CRISPR/Cas9 constructs that target in total 36 genes potentially involved in leaf growth, we generated an array of homozygous lines with various combinations of edits within three generations. Several genotypes show a reproducible 10% increase in leaf size, including a septuple mutant combination. We anticipate that our strategy will facilitate the study of gene families via multiplex CRISPR mutagenesis and the identification of allele combinations to improve quantitative crop traits.
科研通智能强力驱动
Strongly Powered by AbleSci AI