A Comprehensive Review of the Major Genes Conditioning Resistance to Anthracnose in Common Bean

By J. Kelly, Veronica A. Vallejo. 2004

214 citations recorded by the source corpus.

Resistance to anthracnose in common bean is conditioned primarily by nine major independent genes, Co-1 to Co-10 as the Co-3/Co-9 genes are allelic. With the exception of the recessive co-8 gene, all other nine are dominant genes and multiple alleles exist at the Co-1, Co-3 and Co-4 loci. A reverse of dominance at the Co-1 locus suggests that an order of dominance exists among individual alleles at this locus. The nine resistance genes Co-2 to Co-10 are Middle American in origin and Co-1 is the only locus from the Andean gene pool. Seven resistance loci have been mapped to the integrated bean linkage map and Co-1 resides on linkage group B1; Co-2 on B11, Co-3 on B4; Co-4 on B8; Co-6 on B7; and Co-9 and Co- 10 are located on B4 but do not appear to be linked. Three Co-genes map to linkage groups B1, B4 and B11 where clusters with genes for rust resistance are located. In addition, there is co-localization with major resistance genes and QTL that condition partial resistance to anthracnose. Other QTL for resistance may provide putative map locations for the major resistance loci still to be mapped. Molecular markers linked to the majority of major Co- genes have been reported and these provide the opportunity to enhance disease resistance through marker-assisted selection and gene pyramiding. The 10 Co-genes are represented in the anthracnose differential cultivars, but are present as part of a multi-allelic series or in combination with other Co-genes, making the characterization of more complex races diffi cult. Although the Co-genes behave as major Mendelian factors, they most likely exist as resistance gene clusters as has been demonstrated on the molecular level at the Co-2 locus. Since the genes differ in their effectiveness in controlling the highly variable races of the anthracnose pathogen, the authors discuss the value of individual genes and alleles in resistance breeding and suggest the most effective gene pyramids to ensure long-term durable resistance to anthracnose in common bean.

Subfields: Agronomy and Crop Science, Plant Science

View Paper: https://www.semanticscholar.org/paper/ecfb87c0b69480aee1d6b3e1236af45e74939912

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Agronomy and Crop Science

1. J. Beaver
2. J. Osorno
3. P. Gepts
4. M. Blair
5. J. Kelly
6. Phillip N. Miklas
7. Steve Beebe
8. J. Kami

In Plant Science

1. J. Beaver
2. J. Osorno
3. M. Blair
4. J. Kelly
5. Steve Beebe
6. P. Gepts
7. Phillip N. Miklas
8. J. Kami

Citations in the corpus

• Achievements and limitations of contemporary common bean breeding using conventional and molecular approaches (2009, background): “2006b); anthracnose (Kelly and Vallejo 2004); white mold (Kolkman and Kelly 2003; Park et al.”
• Common bean breeding for resistance against biotic and abiotic stresses: From classical to MAS breeding (2006, background): “With the exception of the recessive Co-8 gene, all other nine are dominant genes and multiple alleles exist at the Co-1, Co-3 and Co4 loci (reviewed by Kelly & Vallejo, 2004).”
• The Putative Mesoamerican Domestication Center of Phaseolus vulgaris Is Located in the Lerma–Santiago Basin of Mexico (2009, methodology): “…was provided by morphological (Gepts et al., 1986; Singh et al., 1991a,b), molecular marker (Singh et al., 1991c; Khairallah et al., 1990, 1992; Becerra-Velásquez and Gepts 1994; Tohme et al., 1996; Chacón et al., 2007), and phytopathological (Guzmán et al., 1995; Kelly and Vallejo, 2004) data.”
• Genomics of Phaseolus Beans, a Major Source of Dietary Protein and Micronutrients in the Tropics (2008, background): “Patterns of marker diversity and virulence in pathogens and Rhizobium parallel those in the bean host, suggesting host-microbe coevolution (Guzmán et al. 1995; Geffroy et al. 1999, 2000; Kelly and Vallejo 2004; Araya et al. 2004; Mkandawire et al. 2004; Aguilar et al. 2004).”
• A review of breeding objectives, genomic resources, and marker-assisted methods in common bean (Phaseolus vulgaris L.) (2019, methodology): “QTLs for Al stress tolerance were first identified by López-Marín and Rao (2009).”
• Plant Genetic Resources Conservation and Utilization: The Accomplishments and Future of a Societal Insurance Policy (2006, background): “However, in this species the geographicdivergence between an Andean and a Mesoamerican gene pool is matched by geographically comparable gene pools in Rhizobium and several pathogens including those causing angular leafspot, anthracnose, rust, and common bacterial blight pathogens (Guzmán et al., 19”
• Biotechnology approaches to overcome biotic and abiotic stress constraints in legumes (2006, unknown): “1800 RAPD Kolkman & Kelly (2003)”