New Races ofColletotrichum lindemuthianumin Michigan and Implications in Dry Bean Resistance Breeding

Kelly, James D.; Afanador, L.; Cameron, L.

doi:10.1094/pd-78-0892

Cited by 76 publications

(54 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…lindemuthianum es conocido mundialmente por presentar una amplia variabilidad patogénica (Kelly et al, 1994;Araya, 2003;Rodríguez-Guerra et al, 2006;Sánchez-García et al, 2009;Campa et al, 2011;Pinto et al, 2012) y los resultados obtenidos en este estudio lo confirmaron al identificar trece razas diferentes de diecisiete aislamientos provenientes de tres provincias de Ecuador.…”

Section: Discussionunclassified

Variabilidad patogénica de Colletotrichum lindemuthianum y resistencia en germoplasma de Phaseolus vulgaris L. de Ecuador

et al. 2018

View full text Add to dashboard Cite

Anthracnose caused by Colletotrichum lindemuthianum is one of the most economically important diseases of bean (Phaseolus vulgaris L.) cultivation in Ecuador. The best control alternative is the use of resistant varieties. C. lindemuthianum presents great pathogenic variability, which hinders the development of varieties with a lasting resistance, therefore, the knowledge of the presence and distribution of the physiological races of the pathogen and the identification of resistance genes are key to developing varieties with broad and lasting resistance. The objective of this research was to determine the pathogenic variability of C. lindemuthianum and to evaluate the resistance of Ecuadorian bean germplasm. The research was carried out between 2013 and 2014. Seventeen isolates of C. lindemuthianum from northern central Ecuador were characterized by the inoculation of a group of twelve standard differential bean varieties. Among the analyzed samples, thirteen races were identified; five of those races had not been previously reported in the country. The differential G2333 (Co-42, Co-52 and Co-7) presented resistance to every characterized races in Ecuador. In addition, twenty - one improved varieties and elite bean lines were evaluated with sixteen of the seventeen isolates, three genotypes were identified (TB2, TB3 and INIAP 485 Urcuquí) with resistance to the mentioned isolates, which can be used as sources of resistance to Anthracnose. The identified sources of resistance in this study will allow to plan the development of bean varieties with broad and durable resistance to C. lindemuthianum.

show abstract

Section: Discussionunclassified

Variabilidad patogénica de Colletotrichum lindemuthianum y resistencia en germoplasma de Phaseolus vulgaris L. de Ecuador

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The numerical system used to characterize and distinguish different races is based on the sum of the binary values assigned to those CIAT differential cultivars on which the unknown races is pathogenic (CIAT, 1988;Pastor-Corrales, 1991;Rava et al, 1993;Kelly et al, 1994;Pastor-Corrales et al, 1995;Sicard et al, 1997;González et al, 1998;Mesquita et al, 1998;Balardin and Kelly, 1998;Thomazella et al, 2000).…”

Section: Methodsmentioning

confidence: 99%

Characterization of Colletotrichum lindemuthianum races in Paraná state, Brazil

Thomazella¹,

Gonçalves‐Vidigal²,

Filho³

et al. 2002

CBAB

View full text Add to dashboard Cite

Anthracnose caused by Colletotrichum lindemuthianum is one of the most important diseases in common beans (Phaseolus vulgaris L.). This research aimed at studying the Colletotrichum lindemuthianum in Paraná state region, Brazil, using race identification through differential cultivars. Nine races were identified from the eighteen isolates assessed: 7, 31, 65, 69, 73, 81, 87, 89 , Co-5 and Co-7 genes, were resistant to the identified races. These results showed the pathogenic variability and the importance of monitoring Colletotrichum lindemuthianum and resistant bean plant cultivars.

show abstract

“…Anthracnose occurs more severely in places where relative humidity conditions above 91% and temperatures ranging from 18° and 22°C predominate. The pathogen's development limits infection at temperatures higher than 24ºC and lower than 18ºC (Cháves, 1980;Kelly, Afanador, & Cameron, 1994). The control of anthracnose in common bean is greatly impaired due to the survival capacity of the fungus for several months in both the soil and infected crop residues (Sutton, 1992;Dillard & Cobb, 1993).…”

Section: Introductionmentioning

confidence: 99%

Characterization of race 65 of Colletotrichum lindemuthianum 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

New Races ofColletotrichum lindemuthianumin Michigan and Implications in Dry Bean Resistance Breeding

Cited by 76 publications

References 0 publications

Variabilidad patogénica de Colletotrichum lindemuthianum y resistencia en germoplasma de Phaseolus vulgaris L. de Ecuador

Variabilidad patogénica de Colletotrichum lindemuthianum y resistencia en germoplasma de Phaseolus vulgaris L. de Ecuador

Characterization of Colletotrichum lindemuthianum races in Paraná state, Brazil

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

Contact Info

Product

Resources

About