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Identification and distribution of novel badnaviral sequences integrated in the genome of cacao (Theobroma cacao)

Muller, Emmanuelle; Ullah, Ihsan; Dunwell, Jim M; Daymond, Andrew J; Richardson, Megan; Allainguillaume, Jo�l; Wetten, Andy

Identification and distribution of novel badnaviral sequences integrated in the genome of cacao (Theobroma cacao) Thumbnail


Authors

Emmanuelle Muller

Ihsan Ullah

Jim M Dunwell

Andrew J Daymond

Megan Richardson

Andy Wetten Andy.Wetten@uwe.ac.uk
Senior Lecturer in Plant Sciences



Abstract

Theobroma cacao is one of the most economically important tropical trees, being the source of chocolate. As part of an ongoing study to understand the diversity of the badnavirus complex, responsible for the cacao swollen shoot virus disease in West Africa, evidence was found recently of virus-like sequences in asymptomatic cacao plants. The present study exploited the wealth of genomic resources in this crop, and combined bioinformatic, molecular, and genetic approaches to report for the first time the presence of integrated badnaviral sequences in most of the cacao genetic groups. These sequences, which we propose to name eTcBV for endogenous T. cacao bacilliform virus, varied in type with each predominating in a specific genetic group. A diagnostic multiplex PCR method was developed to identify the homozygous or hemizygous condition of one specific insert, which was inherited as a single Mendelian trait. These data suggest that these integration events occurred before or during the species diversification in Central and South America, and prior to its cultivation in other regions. Such evidence of integrated sequences is relevant to the management of cacao quarantine facilities and may also aid novel methods to reduce the impact of such viruses in this crop.

Citation

Muller, E., Ullah, I., Dunwell, J. M., Daymond, A. J., Richardson, M., Allainguillaume, J., & Wetten, A. (2021). Identification and distribution of novel badnaviral sequences integrated in the genome of cacao (Theobroma cacao). Scientific Reports, 11(1), Article 8270. https://doi.org/10.1038/s41598-021-87690-1

Journal Article Type Article
Acceptance Date Mar 22, 2021
Online Publication Date Apr 15, 2021
Publication Date Apr 15, 2021
Deposit Date Aug 11, 2021
Publicly Available Date Mar 28, 2024
Journal Scientific Reports
Electronic ISSN 2045-2322
Publisher Nature Research (part of Springer Nature)
Peer Reviewed Peer Reviewed
Volume 11
Issue 1
Article Number 8270
DOI https://doi.org/10.1038/s41598-021-87690-1
Public URL https://uwe-repository.worktribe.com/output/7260629
Publisher URL www.nature.com/scientificreports/

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