Genome-Wide Association Analysis of Atrazine Resistance Related Traits and Candidate Gene Prediction in Maize
To identify candidate genes related to herbicide resistance in maize,this study was conducted by using an association population comprising 234 inbred lines of maize as material.The genome-wide associa-tion analysis(GWAS)was conducted through integrating the genotyping results with 56 000 SNP markers and evaluation data of the traits related to atrazine resistance.The results indicated that a total of 62 quantitative trait nucleotides(QTNs)significantly(P＜0.001)associated with maize resistance to atrazine were identified.Among them,PZE-104041162 and PZE-104041163 were associated with both chlorophyll content and maize injury rate.Through candidate gene analysis,57 candidate genes linked to maize resistance to atrazine were i-dentified;among which,GRMZM2G311465,GRMZM2G017536,GRMZM2 G172826,GRMZM2G129431,GRMZM2G334791,GRMZM2G177878 and GRMZM2G030768 were primarily involved in regulating plant growth and development,immunity,hormonal signaling pathways,and responses to biotic and abiotic stresses.These findings could provide key candidate genes for further exploration of the resistance mechanisms to at-razine in different maize germplasms.
MaizeAtrazineGenome-wide association analysisCandidate geneMolecular marker
万方数据
维普
