Trends in common bean breeding research aimed at resistance to common bacterial blight

Brazil is the world's second largest producer of beans (Phaseolus vulgaris L.), yet one of the most significant challenges is the prevalence of common bacterial blight (CBB), a disease caused by the bacterium Xanthomonas axonopodis pv. phaseoli. This study examined scientific literature on the genetic improvement of bean plants for resistance to CBB, using data from the Scopus database from 1998 to 2024. The number of publications, geographical distribution, leading authors, and inoculation and improvement strategies were evaluated. Following the refinement of the search parameters, a total of 46 articles were subjected to analysis. Brazil, the United States of America, and Canada were identified as the most prolific countries in terms of the number of publications. Dr. Karl Peter Pauls of Canada and Dr. Rosana Rodrigues of Brazil were particularly prominent on the global academic stage, and consequently, the University of Guelph in Canada and the State University of Norte Fluminense Darcy Ribeiro-UENF in Brazil. The most prevalent inoculation techniques were multi-needle and spraying with a bacterial suspension (1 x 108 cfu.mL-1). Gene transfer was primarily conducted through traditional hybridization, with backcrossing being the most prevalent method. An interdisciplinary approach, integrating genetics, molecular biology, and biochemistry, was observed, resulting in the mapping of contributions to bean breeding for resistance to CBB.