Título:	Diversity of Colletotrichum species causing anthracnose in chayote in Brazil, with a description of two new species in the C. magnum complex
Autor(es):	Vieira, Willie Anderson dos Santos Costa, Christiane Almeida da Veloso, Josiene Silva Lima, Waléria Guerreiro Correia, Kamila Câmara Michereff, Sami Jorge Pinho, Danilo Batista Câmara, Marcos Paz Saraiva Reis, Ailton
ORCID:	https://orcid.org/0000-0002-0524-7710 https://orcid.org/0000-0003-2624-302X https://orcid.org/0000-0002-7930-7886
Afiliação do autor:	Universidade de Brasília, Departamento de Fitopatologia Universidade Federal Rural de Pernambuco, Departamento de Agronomia Universidade Federal Rural de Pernambuco, Departamento de Agronomia AFYA, Faculdade de Ciências Médicas, Jaboatao do Guarapes Universidade Federal do Cariri, Centro de Ciências Agrárias e da Biodiversidade Universidade Federal do Cariri, Centro de Ciências Agrárias e da Biodiversidade Universidade de Brasília, Departamento de Fitopatologia Universidade Federal Rural de Pernambuco, Departamento de Agronomia Universidade Federal Rural de Pernambuco, Departamento de Agronomia Embrapa Hortaliças, Laboratório de Fitopatologia
Assunto:	Chuchu Filogenia Morfologia Patogenicidade
Data de publicação:	9-Dez-2024
Editora:	MDPI AG
Referência:	VIEIRA, Willie Anderson dos Santos; COSTA, Christiane Almeida da; VELOSO, Josiene Silva; LIMA, Waléria Guerreiro; CORREIA, Kamila Câmara; MICHEREFF, Sami Jorge; PINHO, Danilo Batista; CÂMARA, Marcos Paz Saraiva; REIS, Ailton. Diversity of Colletotrichum species causing anthracnose in chayote in Brazil, with a description of two new species in the C. magnum complex. Journal of Fungi, [S. l.], v. 10, n. 12, 847, 2024. DOI: https://doi.org/10.3390/jof10120847. Disponível em: https://www.mdpi.com/2309-608X/10/12/847. Acesso em: 24 jul. 2026.
Abstract:	Anthracnose caused by Colletotrichum species is the most important disease of chayote (Sicyos edulis) in Brazil. The etiology of chayote anthracnose has been assigned to the species C. orbiculare, an important plant pathogenic fungus also reported as the causal agent of anthracnose in other cucurbits worldwide. However, there is no recent survey of the Colletotrichum species causing anthracnose in chayote in Brazil. In this study, Colletotrichum isolates associated with anthracnose on the fruit and leaves of chayote, from various producing regions in Brazil, were collected and identified. Haplotype analysis based on sequences of the β-tubulin genomic region (TUB2) of 44 Colletotrichum isolates was carried out as a first measure of genetic diversity. A subset of 22 isolates were sequenced using the partial sequences of actin (ACT), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and the rDNA ITS (ITS) region. Maximum likelihood analysis was performed using the concatenated sequences. The multilocus sequence analysis revealed four previously described species, Colletotrichum chrysophilum, C. menezesiae, C. plurivorum, and C. karsti, and two novel species, named C. cucurbitacearum and C. sicyi. All species were able to induce typical symptoms of anthracnose in chayote fruits but varied in their aggressiveness. The species C. menezesiae and C. sicyi were the most aggressive, while C. plurivorum was the least aggressive. The species C. orbiculare was not found to cause chayote anthracnose in Brazil.
Unidade Acadêmica:	Instituto de Ciências Biológicas (IB) Departamento de Fitopatologia (IB FIT)
DOI:	https://doi.org/10.3390/jof10120847
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