ArticleGenome biology and evolution2017
Comparative Genomics of an Unusual Biogeographic Disjunction in the Cotton Tribe (Gossypieae) Yields Insights into Genome Downsizing.
Article in Genome biology and evolution, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 34 citations in OpenAlex.
- CottonGen 2025: a knowledgebase for cotton genomics, genetics, and breeding research.Genetics · 2026Article
- Population Genomics Informs Conservation Strategies for Critically EndangeredEcology and evolution · 2026Article
- Comparative Population Genomics of Relictual Caribbean Island Gossypium hirsutum.Molecular ecology · 2026Article
- Genomic diversity and evolution of the Hawaiian Islands endemic Kokia (Malvaceae).G3 (Bethesda, Md.) · 2024Article
- Origin and diversity of the wild cottons (Gossypium hirsutum) of Mound Key, Florida.Scientific reports · 2024Article
- A comprehensive overview of cotton genomics, biotechnology and molecular biological studies.Science China. Life sciences · 2023Review
- Time-calibrated phylogenies reveal mediterranean and pre-mediterranean origin of the thermophilous vegetation of the Canary Islands.Annals of botany · 2023Article
- Genomic rearrangements and evolutionary changes in 3D chromatin topologies in the cotton tribe (Gossypieae).BMC biology · 2023Article
- Resequencing of durian genomes reveals large genetic variations among different cultivars.Frontiers in plant science · 2023Article
- Evolutionary divergence of duplicated genomes in newly described allotetraploid cottons.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Deleterious Mutations Accumulate Faster in Allopolyploid Than Diploid Cotton (Gossypium) and Unequally between Subgenomes.Molecular biology and evolution · 2022Article
- Genome sequencing of the Australian wild diploid species Gossypium australe highlights disease resistance and delayed gland morphogenesis.Plant biotechnology journal · 2020Article
- Article
- Insights into the Evolution of the New World Diploid Cottons (Gossypium, Subgenus Houzingenia) Based on Genome Sequencing.Genome biology and evolution · 2019Article
- The Genome Sequence ofFrontiers in plant science · 2019Article
- The genomic landscape of molecular responses to natural drought stress in Panicum hallii.Nature communications · 2018Article
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Authors and funding
16 authors at 7 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Long-distance insular dispersal is associated with divergence and speciation because of founder effects and strong genetic drift. The cotton tribe (Gossypieae) has experienced multiple transoceanic dispersals, generating an aggregate geographic range that encompasses much of the tropics and subtropics worldwide. Two genera in the Gossypieae, Kokia and Gossypioides, exhibit a remarkable geographic disjunction, being restricted to the Hawaiian Islands and Madagascar/East Africa, respectively. We assembled and use de novo genome sequences to address questions regarding the divergence of these two genera from each other and from their sister-group, Gossypium. In addition, we explore processes underlying the genome downsizing that characterizes Kokia and Gossypioides relative to other genera in the tribe. Using 13,000 gene orthologs and synonymous substitution rates, we show that the two disjuncts last shared a common ancestor ∼5 Ma, or half as long ago as their divergence from Gossypium. We report relative stasis in the transposable element fraction. In comparison to Gossypium, there is loss of ∼30% of the gene content in the two disjunct genera and a history of genome-wide accumulation of deletions. In both genera, there is a genome-wide bias toward deletions over insertions, and the number of gene losses exceeds the number of gains by ∼2- to 4-fold. The genomic analyses presented here elucidate genomic consequences of the demographic and biogeographic history of these closest relatives of Gossypium, and enhance their value as phylogenetic outgroups.
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