Heritability of aggressiveness components in Cercospora coffeicola isolates

Brown eye spot (BES) disease caused by the fungus Cercospora coffeicola is present in all coffee-producing regions of the world. Heritability has been estimated in studies of Cercospora leaf spot disease resistance in several crops, but there are few studies characterizing the genetic heritability o...

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Published inEuropean journal of plant pathology Vol. 164; no. 4; pp. 495 - 505
Main Authors dos Santos Botelho, Deila Magna, de Resende, Mário Lúcio Vilela, Andrade, Vinicius Teixeira, de Castro Guerra Guimarães, Leonor, Andrade, Alan Carvalho, de Rezende Abrahão, Juliana Costa
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.12.2022
Springer Nature B.V
Subjects
Aggressiveness
Agriculture
Biomedical and Life Sciences
Brown spot
Cercospora coffeicola
Cercosporin
Cluster analysis
Coffee
Cultivars
Disease resistance
Ecology
Eyespot
Fungi
Genetic analysis
Genetic variability
Heritability
Leafspot
Life Sciences
Municipalities
Plant Pathology
Plant Sciences
Sporulation
Disease severity
spp
Cercosporin production
Sporulation
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Summary:Brown eye spot (BES) disease caused by the fungus Cercospora coffeicola is present in all coffee-producing regions of the world. Heritability has been estimated in studies of Cercospora leaf spot disease resistance in several crops, but there are few studies characterizing the genetic heritability of the phenotypic characteristics of the fungus. Therefore, this study aims to verify the existence of heritability of the aggressiveness components (disease severity, sporulation and cercosporin production) in C. coffeicola isolates. Additionally, we estimate the effect of the municipalities (geographic origin) to check their influence on the fungus aggressiveness components. Variation in heritability was observed for each of the three aggressiveness components evaluated. Cluster analysis showed the genetic variability of C. coffeicola isolates, however there was no grouping of C. coffeicola isolates according to their geographic origin. Based on the results obtained, a group of C. coffeicola isolates with high severity and heritability values were selected with the potential to be used in the development and screening of resistant coffee cultivars.
ISSN:0929-1873
1573-8469
DOI:10.1007/s10658-022-02573-z