ArticleProceedings of the National Academy of Sciences of the United States of America2011
Stearoyl-acyl carrier protein desaturases are associated with floral isolation in sexually deceptive orchids.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.
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Who cites it
38 citing papers in PubMed, 115 citations in OpenAlex.
- Plants, Pollinators and Pheromones: Promises and Lies of Semiochemicals.Plant, cell & environment · 2025Review
- Fine-tuned terpene synthase gene expression, functional promiscuity, and subcellular localization: implications for the evolution of complex floral volatile bouquet in Caladenia orchids.Plant & cell physiology · 2025Article
- Within-species floral evolution reveals convergence in adaptive walks during incipient pollinator shift.Nature communications · 2025Article
- Practical preparation of unsaturated very-long-chain fatty acids (VLCFAs) and very-long-chain alkene pollinator attractants.Scientific reports · 2024Article
- Plant pangenomes for crop improvement, biodiversity and evolution.Nature reviews. Genetics · 2024Review
- Genome of the early spider-orchid Ophrys sphegodes provides insights into sexual deception and pollinator adaptation.Nature communications · 2024Article
- Analysis of Delta(9) fatty acid desaturase gene family and their role in oleic acid accumulation inFrontiers in plant science · 2023Article
- Why does an obligate autogamous orchid produce insect attractants in nectar? - a case study on Epipactis albensis (Orchidaceae).BMC plant biology · 2022Article
- Regioselectivity mechanism of the Thunbergia alata Δ6-16:0-acyl carrier protein desaturase.Plant physiology · 2022Article
- Drakolide Structure-activity Relationships for Sexual Attraction of Zeleboria Wasp Pollinator.Journal of chemical ecology · 2022Article
- Development of a High Oleic Cardoon Cell Culture Platform byFrontiers in plant science · 2022Article
- Do floral and ecogeographic isolation allow the co-occurrence of two ecotypes ofEcology and evolution · 2021Article
- Review
- Modelling sexually deceptive orchid species distributions under future climates: the importance of plant-pollinator interactions.Scientific reports · 2020Article
- Diversification in evolutionary arenas-Assessment and synthesis.Ecology and evolution · 2020Review
- Volatile Organic Compounds from Orchids: From Synthesis and Function to Gene Regulation.International journal of molecular sciences · 2020Review
- Identification of (International journal of molecular sciences · 2020Article
- Duplication and selection in β-ketoacyl-ACP synthase gene lineages in the sexually deceptive Chiloglottis (Orchidaceace).Annals of botany · 2019Article
- Emergence of a floral colour polymorphism by pollinator-mediated overdominance.Nature communications · 2019Article
- Tunisian Table Olive Oil Traceability and Quality Using SNP Genotyping and Bioinformatics Tools.BioMed research international · 2019Article
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Authors and funding
7 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The orchids Ophrys sphegodes and O. exaltata are reproductively isolated from each other by the attraction of two different, highly specific pollinator species. For pollinator attraction, flowers chemically mimic the pollinators' sex pheromones, the key components of which are alkenes with different double-bond positions. This study identifies genes likely involved in alkene biosynthesis, encoding stearoyl-acyl carrier protein (ACP) desaturase (SAD) homologs. The expression of two isoforms, SAD1 and SAD2, is flower-specific and broadly parallels alkene production during flower development. SAD2 shows a significant association with alkene production, and in vitro assays show that O. sphegodes SAD2 has activity both as an 18:0-ACP Δ(9) and a 16:0-ACP Δ(4) desaturase. Downstream metabolism of the SAD2 reaction products would give rise to alkenes with double-bonds at position 9 or position 12, matching double-bond positions observed in alkenes in the odor bouquet of O. sphegodes. SAD1 and SAD2 show evidence of purifying selection before, and positive or relaxed purifying selection after gene duplication. By contributing to the production of species-specific alkene bouquets, SAD2 is suggested to contribute to differential pollinator attraction and reproductive isolation among these species. Taken together, these data are consistent with the hypothesis that SAD2 is a florally expressed barrier gene of large phenotypic effect and, possibly, a genic target of pollinator-mediated selection.
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