ArticleAnnals of botany2017
Phylogenetic and functional signals in gymnosperm ovular secretions.
Article in Annals of botany, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 29 citations in OpenAlex.
- The angiosperm radiation played a dual role in the diversification of insects and insect pollinators.Nature communications · 2024Article
- Secondary Metabolites in Nectar-Mediated Plant-Pollinator Relationships.Plants (Basel, Switzerland) · 2023Review
- Model Species to Investigate the Origin of Flowers.Methods in molecular biology (Clifton, N.J.) · 2023Article
- Composition of Sexual Fluids inThe Botanical review; interpreting botanical progress · 2022Article
- The role of pollination in controlling Ginkgo biloba ovule development.The New phytologist · 2021Article
- Revealing the developmental dynamics in male strobilus transcriptome of Gnetum luofuense using nanopore sequencing technology.Scientific reports · 2021Article
- Evolutionary and Ecological Considerations on Nectar-Mediated Tripartite Interactions in Angiosperms and Their Relevance in the Mediterranean Basin.Plants (Basel, Switzerland) · 2021Review
- Distance Dependent Contribution of Ants to Pollination but Not Defense in a Dioecious, Ambophilous Gymnosperm.Frontiers in plant science · 2021Article
- Generalist Pollen-Feeding Beetles during the Mid-Cretaceous.iScience · 2020Article
- Functional and morphological evolution in gymnosperms: A portrait of implicated gene families.Evolutionary applications · 2020Article
- Article
- Complex reproductive secretions occur in all extant gymnosperm lineages: a proteomic survey of gymnosperm pollination drops.Plant reproduction · 2019Article
- Evidence for a double mutualistic interaction between a lizard and a Mediterranean gymnosperm,AoB PLANTS · 2019Article
- Why are the seed cones of conifers so diverse at pollination?Annals of botany · 2018Article
- Nectar in Plant-Insect Mutualistic Relationships: From Food Reward to Partner Manipulation.Frontiers in plant science · 2018Review
- The Evolution of Sexual Fluids in Gymnosperms From Pollination Drops to Nectar.Frontiers in plant science · 2018Review
- Constituent analysis and proteomic evaluation of ovular secretions inPlant signaling & behavior · 2018Article
- Creation of aApplications in plant sciencesArticle
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Authors and funding
11 authors at 5 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsGymnosperms are either wind-pollinated (anemophilous) or both wind- and insect-pollinated (ambophilous). Regardless of pollination mode, ovular secretions play a key role in pollen capture, germination and growth; they are likely also involved in pollinator reward. Little is known about the broad-scale diversity of ovular secretions across gymnosperms, and how these may relate to various reproductive functions. This study analyses the sugar and amino acid profiles of ovular secretions across a range of ambophilous (cycads and Gnetales) and anemophilous gymnosperms (conifers) to place them in an evolutionary context of their possible functions during reproduction.
methodsOvular secretions from 13 species representing all five main lineages of extant gymnosperms were sampled. High-performance liquid chromatography techniques were used to measure sugar and amino acid content. Multivariate statistics were applied to assess whether there are significant differences in the chemical profiles of anemophilous and ambophilous species. Data were compared with published chemical profiles of angiosperm nectar. Chemical profiles were placed in the context of phylogenetic relationships. KEY
resultsTotal sugar concentrations were significantly higher in ovular secretions of ambophilous species than wind-pollinated taxa such as Pinaceae and Cupressophyta. Ambophilous species had lower amounts of total amino acids, and a higher proportion of non-protein amino acids compared with anemophilous lineages, and were also comparable to angiosperm nectar. Results suggest that early gymnosperms likely had ovular secretion profiles that were a mosaic of those associated with modern anemophilous and ambophilous species. Ginkgo, thought to be anemophilous, had a profile typical of ambophilous taxa, suggesting that insect pollination either exists in Gingko, but is undocumented, or that its ancestral populations were insect-pollinated.
conclusionsChemical profiles of ovular secretions of ambophilous gymnosperms show a clear signal of pollinator-driven selection, including higher levels of carbohydrates than anemophilous taxa, lower levels of amino acids, and the presence of specific amino acids, such as β-alanine, that are known to influence insect feeding behaviour and physiology.
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