The UK Cocoa and Chocolate Industry: SEARCH

International Cocoa Quarantine Centre at the University of Reading (ICQC,R). Phase 2016-2021

Found '7' references

Identification of Cacao Mild Mosaic Virus (CaMMV) and Cacao Yellow Vein-Banding Virus (CYVBV) in Cocoa (Theobroma cacao) Germplasm. (10/2021) Ullah, I., Daymond, A.J., Hadley, P., End, M.J., Umaharan, P., Dunwell, J.M.

Viruses, 13, 2152.

Link to paper

Identification and distribution of novel badnaviral sequences integrated in the genome of cacao (Theobroma cacao). (6/5/2021) Muller, E., Ullah, I., Dunwell, J. M., Daymond, A. J., Richardson, M., Allainguillaume, J., & Wetten, A. C.

Scientific Reports, 11(1), 8270.

p 8270

Link to paper

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.

Safe handling and movement of cocoa germplasm for breeding. (2018) Daymond AJ.

Publisher: In: Umaharan P, editor. Achieving sustainable cultivation of cocoa [Internet]. Cambridge, England: Burleigh Dodds Series in Agricultural Science, Burleigh Dodds Scientific Publishing; 2018. Available from: http://centaur.reading.ac.uk/79464/

Conserving and exploiting cocoa genetic resources:the key challenges. (2018) Laliberté, Brigitte End, Michelle J Cryer, Nicholas C Daymond, Andrew J Engels, Jan M M Eskes, Albertus B Gilmour, Martin Lachenaud, Philippe Phillips-Mora, Wilbert Turnbull, Christopher James Umaharan, Pathmanathan Zhang, Dapeng Weise, Stepha

In: Achieving sustainable cultivation of cocoa. 2018. p. 19-46

Publisher: Umaharan P, editor. Cambridge, UK.: Burleigh Dodds Series in Agricultural Science, Burleigh Dodds Scientific Publishing

CacaoNet Guidelines for the Safe Movement of Germplasm. English Version November 2017 (1/11/2017) End, M.J., Daymond, A.J. & Hadley, P. (Eds)

Publisher: Bioversity International

ISBN: 978-92-9043-987-5

Link to paper Download file (pdf - 3.0 MB)

Adopting Reference Genotypes to Identify Off-types in Cacao Collections. (2017) Turnbull CJ, Daymond AJ, Gutierrez O, Hadley, Paul Livingstone, D Motamayor, Juan-Carlos Phillips-Mora, Wilbert Umaharan, Pathmanathan

Paper presented at International Symposium on Cocoa Research, 13-17 November 2017, Lima, Peru. 2017.

Publisher: ICCO

Safe Movement of Cocoa Germplasm. (2017) Daymond AJ, End MJ, Turnbull CJ, Wetten AC, Hadley P

Publisher: In: Paper presented at International Symposium on Cocoa Research, 13-17 November 2017, Lima, Peru. 2017.

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