Colletotrichum: species complexes, lifestyle, and peculiarities of some sources of genetic variability

The genus Colletotrichum comprises species with different lifestyles but is mainly known for phytopathogenic species that infect crops of agronomic relevance causing considerable losses. The fungi of the genus Colletotrichum are distributed in species complexes and within each complex some species h...

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Bibliographic Details
Published in:Applied microbiology and biotechnology 2020-03, Vol.104 (5), p.1891-1904
Main Authors: da Silva, Leandro Lopes, Moreno, Hanna Lorena Alvarado, Correia, Hilberty Lucas Nunes, Santana, Mateus Ferreira, de Queiroz, Marisa Vieira
Format: Article
Language:English
Subjects:
Agronomic crops
Agronomy
Biomedical and Life Sciences
Biotechnology
Colletotrichum
Colletotrichum - genetics
Colletotrichum - growth & development
DNA Transposable Elements - genetics
Emergence
Endophytes
Fungi
Genetic diversity
Genetic variability
Genetic variance
Genetic Variation - genetics
Genome, Fungal - genetics
Genotypes
Heterokaryosis
Host Specificity
Life Sciences
Lifestyles
Microbial Genetics and Genomics
Microbiology
Mini-Review
Mutation
Parasexual cycle
Plant Diseases - microbiology
Repetitive Sequences, Nucleic Acid - genetics
Species
Species Specificity
Transposons
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Summary:The genus Colletotrichum comprises species with different lifestyles but is mainly known for phytopathogenic species that infect crops of agronomic relevance causing considerable losses. The fungi of the genus Colletotrichum are distributed in species complexes and within each complex some species have particularities regarding their lifestyle. The most commonly found and described lifestyles in Colletotrichum are endophytic and hemibiotrophic phytopathogenic. Several of these phytopathogenic species show wide genetic variability, which makes long-term maintenance of resistance in plants difficult. Different mechanisms may play an important role in the emergence of genetic variants but are not yet fully understood in this genus. These mechanisms include heterokaryosis, a parasexual cycle, sexual cycle, transposable element activity, and repeat-induced point mutations. This review provides an overview of the genus Colletotrichum , the species complexes described so far and the most common lifestyles in the genus, with a special emphasis on the mechanisms that may be responsible, at least in part, for the emergence of new genotypes under field conditions.
ISSN:0175-7598
1432-0614
DOI:10.1007/s00253-020-10363-y