Título:	Genome-wide association study for resistance to Pseudomonas syringae pv. garcae in Coffea arabica.
Autoria:	ARIYOSHI, C. SANT'ANA, G. C. FELICIO, M. S. SERA, G. H. NOGUEIRA, L. M. RODRIGUES, L. M. R. FERREIRA, R. V. SILVA, B. S. R. da RESENDE, M. L. V. de DESTÉFANO, S. A. L. DOMINGUES, D. S. PEREIRA, L. F. P.
Afiliação:	CAROLINE ARIYOSHI, UNIVERSIDADE ESTADUAL DE LONDRINA; GUSTAVO CÉSAR SANT'ANA, TROPICAL MELHORAMENTO & GENÉTICA; MARIANE SILVA FELICIO, INSTITUTO DE DESENVOLVIMENTO RURAL DO PARANÁ; GUSTAVO HIROSHI SERA, INSTITUTO DE DESENVOLVIMENTO RURAL DO PARANÁ; LIVIA MARIA NOGUEIRA, UNIVERSIDADE ESTADUAL DE LONDRINA; LUCAS MATEUS RIVERO RODRIGUES, INSTITUTO AGRONÔMICO; RAFAELLE VECCHIA FERREIRA, UNIVERSIDADE ESTADUAL DE LONDRINA; BRUNA SILVESTRE RODRIGUES DA SILVA, UNIVERSIDADE ESTADUAL DE LONDRINA; MÁRIO LÚCIO VILELA DE RESENDE, UNIVERSIDADE FEDERAL DE LAVRAS; SUZETE APARECIDA LANZA DESTÉFANO, INSTITUTO BIOLÓGICO; DOUGLAS SILVA DOMINGUES, ESCOLA SUPERIOR DE AGRICULTURA LUIZ DE QUEIROZ; LUIZ FILIPE PROTASIO PEREIRA, CNPCa.
Ano de publicação:	2022
Referência:	Frontiers in Plant Science, v. 13, article 989847, 2022.
Conteúdo:	Bacteria halo blight (BHB), a coffee plant disease caused by Pseudomonas syringae pv. garcae, has been gaining importance in producing mountain regions and mild temperatures areas as well as in coffee nurseries. Most Coffea arabica cultivars are susceptible to this disease. In contrast, a great source of genetic diversity and resistance to BHB are found in C. arabica Ethiopian accessions. Aiming to identify quantitative trait nucleotides (QTNs) associated with resistance to BHB and the influence of these genomic regions during the domestication of C. arabica, we conducted an analysis of population structure and a Genome-Wide Association Study (GWAS). For this, we used genotyping by sequencing (GBS) and phenotyping for resistance to BHB of a panel with 120 C. arabica Ethiopian accessions from a historical FAO collection, 11 C. arabica cultivars, and the BA-10 genotype. Population structure analysis based on single-nucleotide polymorphisms (SNPs) markers showed that the 132 accessions are divided into 3 clusters: most wild Ethiopian accessions, domesticated Ethiopian accessions, and cultivars. GWAS, using the single-locus model MLM and the multi-locus models mrMLM, FASTmrMLM, FASTmrEMMA, and ISIS EM-BLASSO, identified 11 QTNs associated with resistance to BHB. Among these QTNs, the four with the highest values of association for resistance to BHB are linked to g000 (Chr_0_434_435) and g010741 genes, which are predicted to encode a serine/threonine-kinase protein and a nucleotide binding site leucine-rich repeat (NBS-LRR), respectively. These genes displayed a similar transcriptional downregulation profile in a C. arabica susceptible cultivar and in a C. arabica cultivar with quantitative resistance, when infected with P. syringae pv. garcae. However, peaks of upregulation were observed in a C. arabica cultivar with qualitative resistance, for both genes. Our results provide SNPs that have potential for application in Marker Assisted Selection (MAS) and expand our understanding about the complex genetic control of the resistance to BHB in C. arabica. In addition, the findings contribute to increasing understanding of the C. arabica domestication history.
Thesagro:	Coffea Arábica
NAL Thesaurus:	Genome Disease resistance Pseudomonas syringae group Genome-wide association study
Digital Object Identifier:	https://doi.org/10.3389/fpls.2022.989847
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (SAPC)