ArticleBotanical studies2014
From leaf and branch into a flower: Magnolia tells the story.
Article in Botanical studies, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 27 citations in OpenAlex.
- Article
- Article
- An Anatomically Preserved Cone-like Flower from the Lower Cretaceous of China.Life (Basel, Switzerland) · 2023Article
- Pre-Carpels from the Middle Triassic of Spain.Plants (Basel, Switzerland) · 2022Article
- Serial Section-Based Three-Dimensional Reconstruction ofPlants (Basel, Switzerland) · 2021Article
- Rafflesia patma Blume flower organs: histology of the epidermis and vascular structures, and a search for stomata.Planta · 2020Article
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- Article
- Article
- How the ovules get enclosed in magnoliaceous carpels.PloS one · 2017Article
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Authors and funding
3 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundIn the classical doctrines, Magnolia was frequently considered the archetype among flowering plants, and its conduplicate carpel with marginal placentation was assumed to be derived from a leaf-like organ bearing ovules along its margins. Although the robustness of this concept has been seriously questioned by advances in botanical research, especially the emergence of Magnolia deeper in the angiosperm tree of life in molecular systematics, it remains the most-taught interpretation for the origin of carpels.
resultsTo test the validity of this classical doctrine, we performed comparative anatomical analyses of the vascular bundles in the flowers of Magnolia using fine (8-μm) paraffin -sections. We document the presence of two independent vascular systems in the carpels: the collateral bundles of the dorsal and ventral veins arising from the stelar bundle, and the amphicribral ovular bundles arising from the cortical bundles. This observation in conjunction with data from other fields concurrently suggests that the ovary wall is equivalent to a foliar organ whereas the placenta represents an ovule-bearing shoot.
conclusionsOur observation on the former model plant, Magnolia, nullifies the classical doctrine of carpel evolution and supports the Unifying Theory. This conclusion prompts a reconsideration of the concept of angiosperm flower evolution.
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