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Genome Wide Identification of Key Components of RNA Silencing in Two Phaseolus vulgaris Genotypes of Contrasting Origin and Their Expression Analyses in Response to Fungal Infection
Alvarez-Diaz, J.C.; Richard, M.M.S.; Thareau, V.; Teano, G.; Paysant-Le-Roux, C.; Rigaill, G.; Pflieger, S.; Gratias, A.; Geffroy, V. Genome-Wide Identification of Key Components of RNA Silencing in Two Phaseolus vulgaris Genotypes of Contrasting Origin and Their Expression Analyses in Response to Fungal Infection. Genes2022, 13, 64.
Alvarez-Diaz, J.C.; Richard, M.M.S.; Thareau, V.; Teano, G.; Paysant-Le-Roux, C.; Rigaill, G.; Pflieger, S.; Gratias, A.; Geffroy, V. Genome-Wide Identification of Key Components of RNA Silencing in Two Phaseolus vulgaris Genotypes of Contrasting Origin and Their Expression Analyses in Response to Fungal Infection. Genes 2022, 13, 64.
Alvarez-Diaz, J.C.; Richard, M.M.S.; Thareau, V.; Teano, G.; Paysant-Le-Roux, C.; Rigaill, G.; Pflieger, S.; Gratias, A.; Geffroy, V. Genome-Wide Identification of Key Components of RNA Silencing in Two Phaseolus vulgaris Genotypes of Contrasting Origin and Their Expression Analyses in Response to Fungal Infection. Genes2022, 13, 64.
Alvarez-Diaz, J.C.; Richard, M.M.S.; Thareau, V.; Teano, G.; Paysant-Le-Roux, C.; Rigaill, G.; Pflieger, S.; Gratias, A.; Geffroy, V. Genome-Wide Identification of Key Components of RNA Silencing in Two Phaseolus vulgaris Genotypes of Contrasting Origin and Their Expression Analyses in Response to Fungal Infection. Genes 2022, 13, 64.
Abstract
RNA silencing serves key roles in a multitude of cellular processes, including development, stress responses, metabolism, and maintenance of genome integrity. Dicer, Argonaute (AGO), double-stranded RNA binding (DRB), RNA-dependent RNA polymerase (RDR) and DNA-dependent RNA polymerases known as Pol IV and Pol V form core components to trigger RNA silencing. Common bean (Phaseolus vulgaris) is an important staple crop worldwide. In this study, we aimed to unravel the components of the RNA-guided silencing pathway in this non-model plant taking advantage of the availability of two genome assemblies of Andean and Meso-American origin. We identified six PvDCLs, thirteen PvAGOs, 10 PvDRB, 5 PvRDR, in both genotypes, suggesting no recent gene amplification or deletion after the gene pool separation. In addition, we identified one PvNRPD1 and one PvNRPE1 encoding the largest subunits of Pol IV and Pol V, respectively. These genes were categorized into subgroups based on phylogenetic analyses. Comprehensive analyses of gene structure, genomic localization and similarity among these genes were performed. Their expression patterns were investigated by means of expression models in different organs using online data and quantitative RT-PCR after pathogen infection. Several of the candidate genes were up-regulated after infection with the fungus Colletotrichum lindemuthianum.
Keywords
Phaseolus vulgaris; Colletotrichum lindemuthianum; RNA silencing; Argonaute; double-stranded RNA binding (DRB); RNA-dependent RNA polymerase (RDR); Pol IV
Subject
Biology and Life Sciences, Plant Sciences
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
