摘要
Immature embryos of inbred maize(Zea mays)lines(H8183,H8184,and H8185)were used for Agrobacterium infection.We used theβ-glucuronidase gene(GUS)as the target gene and the glufosinate resistance gene(bar)as the selection marker.We conducted research on several aspects,such as different genotypes,coculture conditions,screening agent concentrations,and concentrations of indole-3-butytric acid(IBA),6-benzylaminopurine(6-BA),and ascorbic acid(Vc)in the differentiation medium.We optimized the genetic transformation system,and the obtained results indicated that among the three lines studied,the induction rate of H8185 was the highest at 93.2%,followed by H8184,with H8183 having the lowest induction rate(80.1%).The best coculture method was that using the N6 coculture medium layered with a sterile filter paper.Using orthogonal analysis,we found that the optimal combination of the three factors in the differentiation medium was A_(3)(1 mg mL^(−1)IBA),B_(3)C_(1)(1.6 mg mL^(−1)6-BA),and D_(3)(1.5 mg mL^(−1)Vc).Through GUS staining analysis,Bar test-strip analysis,and polymerase chain reaction,five transgenic plants were finally obtained.This study established the optimal conditions for genetic transformation in maize.
基金
This work was supported by Jilin Provincial Natural Science Foundation Project[20190201168JC]
“Thirteenth Five-Year”Science and Technology Project of Jilin Provincial Department of Education[JJKH20200341KJ]
Science and Technology Project of Jilin Provincial Department of Education[JJKH20210351KJ,JJKH20210346KJ]Jilin Province Science and Technology Development Plan Project[20200402023NC]
Jilin Province Key Technology R&D Project[20180201029NY]
Jilin Province Support for the Science and Technology Development Program[20190802012ZG]
College Student Innovation and Entrepreneurship Training Program Project[202010193087].Furthermore,the funding body have no role in designing of study,collection and interpretation of data or writing up the manuscript.
