ArticleMethods in molecular biology (Clifton, N.J.)2023
An Overview to the Index to Chromosome Numbers in Asteraceae Database: Revisiting Base Chromosome Numbers, Polyploidy, Descending Dysploidy, and Hybridization.
Article in Methods in molecular biology (Clifton, N.J.), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 8 citations in OpenAlex.
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- Evolving Together: Cassandra Retrotransposons Gradually Mirror Promoter Mutations of the 5S rRNA Genes.Molecular biology and evolution · 2024Article
- Genomic constitution and relationships ofPhysiology and molecular biology of plants : an international journal of functional plant biology · 2022Article
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- Home at last: the enigmatic genera Eriachaenium and Adenocaulon (Compositae, Mutisioideae, Mutisieae, Adenocaulinae).PhytoKeys · 2016Article
- Apomixis is not prevalent in subnival to nival plants of the European Alps.Annals of botany · 2011Article
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Authors and funding
2 authors at 2 institutions in 2 countries.
Funding
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Abstract
A brief overview to the Index to Chromosome Numbers in Asteraceae database is provided. The database contains karyological information on Asteraceae and has been repeatedly improved and updated and is now hosted at the National Bioscience Database center. Also, we take the opportunity to revisit the evolution of base chromosome numbers in Asteraceae, emphasizing the phenomena of polyploidy, descending dysploidy, and hybridization, common in the family. Chromosome numbers for species included in one of the most recent phylogenetic treatments of the Asteraceae were obtained from the Index to Chromosome Numbers in Asteraceae database were mapped on to the modified phylogeny diagram, and base chromosome numbers were determined for each branch of the phylogeny. Results for tribal base numbers were the same as those hypothesized in our previous work with additional base numbers added for tribes not previously recognized but supported by newer phylogenetic methods. The Asteraceae show an ancestral base chromosome number of x = 9 and originated in the Antarctica (Gondowanaland) in Cretaceous (80 Mys ago). The x = 9 number has been retained through successive South American lineages of the Barnadesieeae, Gochnatieae, Stiffieae, Wunderlichieae, Astereae, and Senecioneae following northward migration. Northward migration to Africa was accompanied with x = 10 becoming the dominant base chromosome number as the family evolved multiple additional tribes. Northward migration to Australasia with x = 9 was in Astereae and the families Goodeneaseae, Menyanthaceae, and Stylydiaceae. The evolution of the North American Heliantheae alliance began with the appearance of x
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