Knowra Amborella Amborella Amborella is a genus of flowering plants containing the sole species Amborella trichopoda, a shrub endemic to New Caledonia. It is the earliest-diverging living lineage of flowering plants.
Flowering plant : A plant that produces seeds enclosed within an ovary, typically developing into a fruit. Amborella belongs to this group, whose evolutionary history it helps illuminate.
Flower : The reproductive structure of flowering plants, containing organs that produce gametes and develop into seeds and fruit. Amborella’s floral structure offers evidence about early angiosperm reproduction.
New Caledonia : A French archipelago in the southwest Pacific, east of Australia. Amborella is endemic to this archipelago’s humid forests.
Amborella Genome Project : An international effort that sequenced and analyzed the nuclear genome of Amborella trichopoda. Its genome provided a reference for studying the ancestral features of flowering plants.
Angiosperm phylogeny : The evolutionary relationships among flowering plant lineages. Amborella’s placement on the angiosperm family tree is unusually informative.
Vascular plant : A plant with specialized tissues that transport water, minerals, and sugars. Amborella’s wood anatomy stands out among living flowering plants.
Gondwana : An ancient southern supercontinent that included present-day Africa, South America, Antarctica, Australia, and India. Its breakup shaped the region’s geological history, though Amborella’s lineage is much older than the islands’ current geography.
Amborella Genome Project Consortium : The research collaboration that produced the first nuclear genome sequence of Amborella trichopoda. The consortium coordinated the genomic study that established Amborella as a comparative model.
Basal (phylogenetics) : A position near the root of a phylogenetic tree, indicating an early divergence from other sampled lineages. Amborella is often described as the earliest-diverging living angiosperm lineage.
Xylem : Vascular tissue that conducts water and dissolved minerals through a plant. Amborella lacks vessel elements, a feature relevant to reconstructing early angiosperm wood.
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