Morphological, Pathological and Genetic Diversity of the Colletotrichum Species, Pathogenic on Solanaceous Vegetable Crops in Bulgaria

Colletotrichum species are among the most devastating plant pathogens in a wide range of hosts. Their accurate identification requires a polyphasic approach, including geographical, ecological, morphological, and genetic data. Solanaceous crops are of significant economic importance for Bulgarian ag...

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Published in:Journal of fungi (Basel) 2022-10, Vol.8 (11), p.1123
Main Authors: Manova, Vasilissa, Stoyanova, Zornitsa, Rodeva, Rossitza, Boycheva, Irina, Korpelainen, Helena, Vesterinen, Eero, Wirta, Helena, Bonchev, Georgi
Format: Article
Language:English
Subjects:
Anthracnose
Biodiversity
Colletotrichum
Colletotrichum cigarro
Colletotrichum godetiae
Colletotrichum nymphaeae
Colletotrichum salicis
Crop diseases
Crops
Disease control
Disease resistance
Economic importance
Flowers & plants
Fruits
Genetic diversity
Morphology
multilocus DNA barcoding
Pathogens
Phylogenetics
phytopathogenic fungi
Species
Strawberries
Taxonomy
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Summary:Colletotrichum species are among the most devastating plant pathogens in a wide range of hosts. Their accurate identification requires a polyphasic approach, including geographical, ecological, morphological, and genetic data. Solanaceous crops are of significant economic importance for Bulgarian agriculture. Colletotrichum-associated diseases pose a serious threat to the yield and quality of production but are still largely unexplored. The aim of this study was to identify and characterize 26 pathogenic Colletotrichum isolates that threaten solanaceous crops based on morphological, pathogenic, and molecular data. DNA barcodes enabled the discrimination of three main taxonomic groups: C. acutatum, C. gloeosporioides, and C. coccodes. Three different species of acutatum complex (C. nymphaeae, C. godetiae, and C. salicis) and C. cigarro of the gloeosporioides complex were associated with fruit anthracnose in peppers and tomatoes. The C. coccodes group was divided in two clades: C. nigrum, isolated predominantly from fruits, and C. coccodes, isolated mainly from roots. Only C. salicis and C. cigarro produced sexual morphs. The species C. godetiae, C. salicis, and C. cigarro have not previously been reported in Bulgaria. Our results enrich the knowledge of the biodiversity and specific features of Colletotrichum species, which are pathogenic to solanaceous hosts, and may serve as a scientific platform for efficient disease control and resistance breeding.
ISSN:2309-608X
2309-608X
DOI:10.3390/jof8111123