Low virus diversity and spread in wild Capsicum spp. accessions from Ecuador under natural inoculum pressure

Challenging wild plant accessions with pathogens is an initial approach for finding resistance genes for breeding programs. Viruses can be transmitted artificially by mechanical or arthropod-borne inoculation, but these experimental assays do not always reproduce natural conditions in the field. In...

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Bibliographic Details
Published in:Archives of virology 2021-05, Vol.166 (5), p.1447-1453
Main Authors: Vélez-Olmedo, Jefferson B., Quiñonez, Liliana Corozo, Vélez-Zambrano, Sergio M., Monteros-Altamirano, Álvaro, De Oliveira, Athos S., Resende, Renato O.
Format: Article
Language:English
Subjects:
Biodiversity
Biomedical and Life Sciences
Biomedicine
Brief Report
Capsicum
Capsicum - classification
Capsicum - genetics
Capsicum - virology
Cultivars
Disease resistance
Disease Resistance - genetics
Disease transmission
Ecuador
Host plants
Infectious Diseases
Inoculation
Inoculum
Medical Microbiology
Plant Breeding
Plant Diseases - virology
RNA viruses
RNA, Viral - genetics
Virology
Viruses
Viruses - classification
Viruses - genetics
Viruses - isolation & purification
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Summary:Challenging wild plant accessions with pathogens is an initial approach for finding resistance genes for breeding programs. Viruses can be transmitted artificially by mechanical or arthropod-borne inoculation, but these experimental assays do not always reproduce natural conditions in the field. In this study, 56 wild Capsicum spp. accessions from Ecuador that were under natural inoculum pressure for six months were screened for virus infections by RNA sequencing. These plants exhibited low virus diversity in comparison to a commercial pepper cultivar that was used as a susceptible host. Subjecting numerous plants to natural infection prior to artificial assays may indicate promising accessions to track within virus/vector resistance breeding programs.
ISSN:0304-8608
1432-8798
DOI:10.1007/s00705-021-05027-9