Analysis of Gene Evolution Related to Symbiotic Nitrogen Fixation Pathway in Arachis Plants
Symbiotic nitrogen fixation is an important biological process in which plants fix atmospheric nitrogen by forming root nodules through symbiosis with rhizobia.Although certain research has been done on the symbiotic nitrogen fixation pathway in legumes,the genetic evolution mechanism of this pathway in the genus Arachis is still unclear.This paper analyzes the evolution of genes related to the symbiotic nitrogen fixation pathway in the genus Arachis.The results show that there are 371 genes related to the symbiotic nitrogen fixation pathway from five gene families in the genus Arachis and the outgroup plant(grape),and these genes have expanded in the genus Arachis,with the INV gene showing dramatic amplification.Polyploidization,tandem duplication,and gene loss events jointly promote the expansion and diversification of genes related to the symbiotic nitrogen fixation pathway in the genus Arachis.Homologous genes produced by polyploidization and tandem duplication show divergent expression patterns,suggesting the neofunctionalization of genes with ancient origins.The research results provide theoretical references for understanding the evolution of genes related to the symbiotic nitrogen fixation pathway in the genus Arachis and genomic support for exploring the improvement of biological nitrogen fixation efficiency.
Arachissymbiotic nitrogen fixationgene family evolutionexpression pattern
万方数据
维普
