Genetic characterization of anthracnose resistance genes Co-4
                     3 and Co-9 in common bean cultivar tlalnepantla 64 (PI 207262)

Alzate-Marin, Ana Lília; Souza, Krystyano Almeida de; Silva, Marcelo Geraldo de Morais; Oliveira, E. J. de; Moreira, Maurílio Alves; Barros, Everaldo Gonçalves de

doi:10.1007/s10681-006-9253-x

Cited by 37 publications

(35 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It presents a wide range of resistance; however it does not confer resistance to race 65 [23,37,76]. Although, five duplicated genes associated with resistance to race 65 of C .…”

Section: Discussionmentioning

confidence: 99%

Are duplicated genes responsible for anthracnose resistance in common bean?

et al. 2017

View full text Add to dashboard Cite

The race 65 of Colletotrichum lindemuthianum, etiologic agent of anthracnose in common bean, is distributed worldwide, having great importance in breeding programs for anthracnose resistance. Several resistance alleles have been identified promoting resistance to this race. However, the variability that has been detected within race has made it difficult to obtain cultivars with durable resistance, because cultivars may have different reactions to each strain of race 65. Thus, this work aimed at studying the resistance inheritance of common bean lines to different strains of C. lindemuthianum, race 65. We used six C. lindemuthianum strains previously characterized as belonging to the race 65 through the international set of differential cultivars of anthracnose and nine commercial cultivars, adapted to the Brazilian growing conditions and with potential ability to discriminate the variability within this race. To obtain information on the resistance inheritance related to nine commercial cultivars to six strains of race 65, these cultivars were crossed two by two in all possible combinations, resulting in 36 hybrids. Segregation in the F2 generations revealed that the resistance to each strain is conditioned by two independent genes with the same function, suggesting that they are duplicated genes, where the dominant allele promotes resistance. These results indicate that the specificity between host resistance genes and pathogen avirulence genes is not limited to races, it also occurs within strains of the same race. Further research may be carried out in order to establish if the alleles identified in these cultivars are different from those described in the literature.

show abstract

“…It presents a wide range of resistance; however it does not confer resistance to race 65 [23,37,76]. Although, five duplicated genes associated with resistance to race 65 of C .…”

Section: Discussionmentioning

confidence: 99%

Are duplicated genes responsible for anthracnose resistance in common bean?

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The plants were incubated and maintained in a mist chamber (20–22°C, 100% relative humidity) for 7 days. After this period, each plant was scored visually for disease symptoms as described by Alzate‐Marin et al. (2007).…”

Section: Methodsmentioning

confidence: 99%

Association of Dominant and Recessive Genes Confers Anthracnose Resistance in Stem and Leaves of Common Bean

Alzate-Marin

Schuster²,

Moreira

et al. 2008

Journal of Phytopathology

Self Cite

View full text Add to dashboard Cite

Different genes might be involved in Colletotrichum lindemuthianum resistance in leaves and stem of common bean. This work aimed to study the genetic mechanisms of the resistance in the leaf and stem in segregating populations from backcrosses involving resistant cultivar AN 910408 and susceptible cultivar Ruda´inoculated with spore suspensions of C. lindemuthianum race 83. Our results indicate that two genes which interact epistatically, one dominant and one recessive, are involved in the genetic control of leaf anthracnose resistance. As for stem anthracnose resistance, two genes also epistatic, one dominant and one recessive, explain the resistance to C. lindemuthianum race 83. The recessive gene is the same for leaf and stem resistance; however, the dominant genes are distinct and independent from each other. The three independent resistance genes of AN 910408 observed in this work could be derived from Guanajuato 31.

show abstract

“…In turn, Group II consists of twelve isolates of race 65, the isolates of race 17, race 2, MAFF 305390, R23.19, Rec15, the subgroup with isolate 11 from the State of Santa Catarina belonging to race 65, and races 23, 31, 73 and 1096. Gonçalves-Vidigal and Kelly (2006) used an isolate of race 65 that overcame resistance in cultivar BAT93 that differed from the one used by Alzate-Marin et al (2007) for which BAT93 showed resistance. In the present study, two groups within race 65 were observed in the phylogenetic tree.…”

Section: Similarity and Dissimilarity Measuresmentioning

confidence: 99%

<b>Characterization of race 65 of <i>Colletotrichum lindemuthianum</i> by sequencing ITS regions

et al. 2016

View full text Add to dashboard Cite

ABSTRACT. The present work aimed characterize isolates of C. lindemuthianum race 65 from different regions in Brazil by ITS sequencing. A total of 17 isolates of race 65, collected in the states of Mato Grosso, Minas Gerais, Paraná, Santa Catarina and São Paulo, were studied. Analysis of the sequences of isolates 8, 9, 12, 14 and 15 revealed the presence of two single nucleotide polymorphisms (SNPs) in the ITS1 region at the same positions. These isolates, when analyzed together with the sequence of isolate 17, revealed a SNP in the ITS2 region. The highest genetic dissimilarity, observed between isolates 11 and 3 and between isolates 11 and 10, was 0.772. In turn, isolates 7 and 2 were the most similar, with a value of 0.002 for genetic distance. The phylogenetic tree obtained based on the sequences of the ITS1 and ITS2 regions revealed the formation of two groups, one with a subgroup. The results reveal high molecular variability among isolates of race 65 of C. lindemuthianum.Keywords: anthracnose, genetic variability, pathogens, dissimilarity.Caracterização da raça 65 de Colletotrichum lindemuthianum utilizando sequenciamento das regiões ITS RESUMO. O presente trabalho teve como objetivo caracterizar isolados de C. lindemuthianum da raça 65 provenientes de diversas regiões do Brasil, por meio de sequenciamento de regiões ITS. Um total de 17 isolados da raça 65, coletados nos estados do Mato Grosso, Minas Gerais, Paraná, Santa Catarina e São Paulo, foram estudados. As análises das sequências dos isolados 8, 9, 12, 14 e 15 revelaram a presença de dois SNPs na região ITS1 nas mesmas posições. Estes mesmos isolados quando analisados juntamente com a sequência do isolado 17 apresentaram um SNP na região ITS2. A maior dissimilaridade genética foi de 0,772 observada entre os isolados 11 e 3 e entre os isolados 11 e 10. Por sua vez, os isolados 7 e 2 foram os mais similares, com valor de distância genética de 0,002. A árvore filogenética obtida com base nas sequências das regiões ITS1 e ITS2 revelou a formação de dois grupos, sendo um com a divisão de um subgrupo. Estes resultados revelam uma elevada variabilidade molecular entre isolados da raça 65 de C. lindemuthianum.

show abstract

Genetic characterization of anthracnose resistance genes Co-4 3 and Co-9 in common bean cultivar tlalnepantla 64 (PI 207262)

Cited by 37 publications

References 17 publications

Are duplicated genes responsible for anthracnose resistance in common bean?

Are duplicated genes responsible for anthracnose resistance in common bean?

Association of Dominant and Recessive Genes Confers Anthracnose Resistance in Stem and Leaves of Common Bean

<b>Characterization of race 65 of <i>Colletotrichum lindemuthianum</i> by sequencing ITS regions

Contact Info

Product

Resources

About