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  5. The Gongora gibba genome assembly provides new insights into the evolution of floral scent in male euglossine bee-pollinated orchids.

The Gongora gibba genome assembly provides new insights into the evolution of floral scent in male euglossine bee-pollinated orchids.

Resource type
Journal article
Creator (person)
Guizar Amador, Maria Fernanda
ORCIDORCID logo
Darragh, Kathy
ORCIDORCID logo
Liu, Jasen W.
Dean, Cheryl
Bogarín, Diego
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more
Date published
September 4, 2024
Abstract

Orchidaceae is one of the most prominent flowering plant families, with many species exhibiting highly specialized reproductive and ecological adaptations. An estimated 10% of orchid species in the American tropics are pollinated by scent-collecting male euglossine bees; however, to date, there are no published genomes of species within this pollination syndrome. Here we present the first draft genome of an epiphytic orchid from the genus Gongora, a representative of the male euglossine bee-pollinated subtribe Stanhopeinae. The 1.83 Gb de novo genome with a scaffold N50 of 1.7Mb was assembled using short- and long-read sequencing and chromosome capture (Hi-C) information. Over 17,000 genes were annotated, and 82.95% of the genome was identified as repetitive content. Furthermore, we identified and manually annotated 26 terpene synthase (TPS) genes linked to floral scent biosynthesis and performed a phylogenetic analysis with other published orchid TPS genes. The Gongora gibba genome assembly will serve as the foundation for future research to understand the genetic basis of floral scent biosynthesis and diversification in orchids. Las orquídeas (Orchidaceae) son una de las familias de plantas con mayor riqueza de especies y exhiben adaptaciones reproductivas altamente especializadas. Se estima que el 10% de las especies de orquídeas en los trópicos americanos son polinizadas por abejas euglosinas; sin embargo, hasta la fecha no existen genomas publicados de especies con este síndrome de polinización. Aquí presentamos el primer genoma de una orquídea epífita del género Gongora, un representante de la subtribu Stanhopeinae, que es polinizada exclusivamente por abejas euglosinas macho. El genoma de 1,83 Gb se ensambló de novo utilizando secuenciación e información de captura de cromosomas (Hi-C), logrando un N50 de 1,7 Mb. Se anotaron más de 17.000 genes y se identificó que el 82,95% del genoma presenta elementos repetitivos. Además, identificamos y anotamos manualmente 26 genes de la familia de genes terpeno sintasa (TPS) y realizamos un análisis filogenético con otros genes TPS de orquídeas publicados. El ensamblaje del genoma de Gongora gibba servirá como base para futuras investigaciones para comprender la base genética de la biosíntesis y la diversificación de los aromas florales en las orquídeas.

Organisational unit
Science
Contributor (person)
Verhoeven, Koen
Editor
ORCIDORCID logo
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Funder
Funder nameISNIAwards
David and Lucile Packard Foundation, United States
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Secretaría Nacional de Ciencia, Tecnología e Innovación, Panama
(APY-NI-2017-05)
Universidad de Costa Rica, Costa Rica
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(Project C4074)
Journal title
G3: Genes, Genomes, Genetics
Article number
jkae211
Publisher
Oxford University Press (OUP)
Place of publication
Oxford, UK
eISSN
2160-1836
Date accepted
September 3, 2024
Official URL
https://doi.org/10.1093/g3journal/jkae211
Rights statement
In Copyright
Licence
CC BY 4.0
DOI
10.1093/g3journal/jkae211
Alternate identifier
jkae211
Keywords
Orchids
Gongora gibba
Genome assembly
Terpene synthesis
Orchidaceae
Bee-pollinated orchids
Floral scent
Gongora
Chemotype A
Euglossini
Additional information
IF = 3.542 (2023-2024)
Managed by the British Library and supported by the AHRC

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