Identifying coffee: development of a low-cost and robust barcoding assay for wild African Coffea species

Autores/as

  • Y. Bawin Meise Botanic Garden, Meise Centre for Environmental Sciences, Hasselt University, Hasselt Department of Biology, KU Leuven, Leuven
  • A. S. Tas Meise Botanic Garden, Meise Department of Biology, KU Leuven, Leuven
  • A. Mertens Meise Botanic Garden, Meise
  • P. Stoffelen Meise Botanic Garden, Meise
  • B. Verstraete Meise Botanic Garden, Meise
  • S. de Backer Meise Botanic Garden, Meise
  • F. Vandelook Meise Botanic Garden, Meise Department of Biology, KU Leuven, Leuven
  • S. B. Janssens Meise Botanic Garden, Meise Department of Biology, KU Leuven, Leuven

Resumen

With an estimated consumption of more than two billion cups a day, coffee is one of the most popular beverages in the world. Nearly all coffee is produced from the seeds of two species: Coffea arabica (Arabica coffee) and Coffea canephora (Robusta coffee). Both Arabica and Robusta coffee production is threatened by climate fluctuations and disease outbreaks, reducing yields and ravaging coffee plantations. To overcome these challenges, the potential of other wild Coffea species for the improvement of existing coffee varieties or for the development of new varieties has been studied. The Coffea genus consists of circa 130 described species that are mainly found in sub-Saharan Africa and Madagascar. Coffea species on the African continent are more closely related to Arabica and Robusta coffee. Nevertheless, the identification of African Coffea species at species level based on morphological traits can be challenging as several species seem to have overlapping trait characteristics. In this study, we developed a molecular barcoding assay consisting of eight nuclear markers between ca 200 and 800 base pairs long that can be sequenced using Sanger sequencing. Marker regions were selected based on the output of publicly available genotyping-by-sequencing data, ensuring that each Coffea species included in this dataset had a unique allele for at least two out of eight markers. The resulting barcoding assay is a cost-efficient and accessible tool for the molecular identification of wild African Coffea species, facilitating their conservation and their application for the improvement of coffee cultivation.

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Publicado

2023-10-25

Cómo citar

Bawin, Y., Tas, A. S., Mertens, A., Stoffelen, P., Verstraete, B., de Backer, S., Vandelook, F., & Janssens, S. B. (2023). Identifying coffee: development of a low-cost and robust barcoding assay for wild African Coffea species. Bonplandia, 32, 1. Recuperado a partir de https://revistas.unne.edu.ar/index.php/bon/article/view/6938

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