Identification of common bean genotypes resistant to angular leaf spot by assessing the incompatibility reactions and molecular markers

• Grant number: 14/19967-1
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: October 01, 2014
• End date: March 31, 2016
• Field of knowledge: Agronomical Sciences - Agronomy - Crop Science
• Principal Investigator: Luciana Lasry Benchimol-Reis
• Grantee: Natalia Arruda
• Host Institution: Instituto Agronômico (IAC). Agência Paulista de Tecnologia dos Agronegócios (APTA). Secretaria de Agricultura e Abastecimento (São Paulo - Estado). Campinas , SP, Brazil

Abstract

The common bean is one of the most cultivated legumes in the world, standing out as the main source of protein and calories to populations of Africa and the Americas. Being a species cultivated throughout the year, this crop is vulnerable to attack by pathogenic fungi, foremost among them the Pseudocercospora griseola (Sacc.) Crous & Braun, causal agent of angular leaf spot (ALS), very important disease of the common bean. The pathogen has a wide genetic variability, providing constant resistance in commercial cultivars breaks. Phenotypic and molecular characterization of potential parents intercrossed to be a fundamental step in the selection assisted by molecular markers aimed at disease resistance. According to recent studies by our research group, this pattern of quantitative disease resistance gene shows and several QTLs are associated with the resistance profile. Some types of molecular markers such as SCARs SSRs were linked to the main peaks of the QTLs and they can be used for indirect selection of resistance in other genotypes. The objective of this project is the phenotypic and molecular characterization of 85 genotypes of the carioca grain type including the parents of the backcross program aimed at molecular marker assisted selection (FAPESP no 2014 / 11145-2), for resistance to ALS and the presence of the respective alleles of markers linked to resistance. Some cultivars that show to be resistant to pathotypes may be used as sources of the fittest genes in an attempt to develop cultivars with multiple resistances to this disease in a shorter period, compared to the use of exotic sources of resistance. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE ALMEIDA, CALEO PANHOCA; ARRUDA, NATALIA; DE CARVALHO PAULINO, JEAN FAUSTO; DE FREITAS, GABRIEL MAMEDIO; JANINI BONFANTE, GABRIEL FRANCESCO; BAJAY, MIKLOS MAXIMILIANO; DE DEUS, BIANCA CRISTINA; ALVES PATRICIO, FLAVIA RODRIGUES; MORAIS CARBONELL, SERGIO AUGUSTO; CHIORATO, ALISSON FERNANDO; et al. Genetic diversity ofPseudocercospora griseolaresistancelociin common beans. TROPICAL PLANT PATHOLOGY, v. 46, n. 1, SEP 2020. (17/01753-3, 14/19967-1, 14/11145-2)

DE ALMEIDA, CALEO PANHOCA; ARRUDA, NATALIA; DE CARVALHO PAULINO, JEAN FAUSTO; DE FREITAS, GABRIEL MAMEDIO; JANINI BONFANTE, GABRIEL FRANCESCO; BAJAY, MIKLOS MAXIMILIANO; DE DEUS, BIANCA CRISTINA; ALVES PATRICIO, FLAVIA RODRIGUES; MORAIS CARBONELL, SERGIO AUGUSTO; CHIORATO, ALISSON FERNANDO; et al. Genetic diversity ofPseudocercospora griseolaresistancelociin common beans. ROPICAL PLANT PATHOLOG, v. 46, n. 1, p. 10-pg., 2020-09-03. (14/19967-1, 14/11145-2, 17/01753-3)