A tritrophic plant-insect-pathogen system used to develop a closely linked Rag2 and Rsv1-h recombinant haplotype in double-resistant soybean germplasm.

ABSTRACT:

Background

The colocalization of two resistance (R) genes on chromosome 13 of soybean (Glycine max (L.) Merrill) that confer resistance against the soybean aphid (Aphis glycines) and soybean mosaic virus (SMV) gives rise to a very unique R-avr tritrophic incompatible interaction system that goes across biological kingdoms. In this tritrophic system, the insect is the only natural vector of the virus and soybean is a host-plant for both pests/pathogen. The almost unavoidable co-evolution of pathogen-vector with that of the R-genes in soybean plants through an endless arms race to avoid each other's defense-attack mechanisms raises interesting questions. The objectives of this work were to (i) develop double-resistant recombinant inbred lines (RILs) with a Rag2-Rsv1-h gene haplotype

SUBMITTER: Posadas LG 

PROVIDER: S-EPMC12117769 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature