Epilobieae genomes and the evolution of Myrtales

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Publicado en:BMC Plant Biology vol. 25 (2025), p. 1-15
Autor principal: Wang, Dan
Otros Autores: Li, Wenkai, Yang, Bing, Shen, Yujia, He, Jun, Dunn, Derek W, Li, Kang Huangoguo
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Springer Nature B.V.
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022 |a 1471-2229 
024 7 |a 10.1186/s12870-025-07003-w  |2 doi 
035 |a 3237002584 
045 2 |b d20250101  |b d20251231 
084 |a 58484  |2 nlm 
100 1 |a Wang, Dan 
245 1 |a Epilobieae genomes and the evolution of Myrtales 
260 |b Springer Nature B.V.  |c 2025 
513 |a Journal Article 
520 3 |a The order Myrtales, one of the most species-rich lineage within the Superrosidae clade, with the majority of its species distributed across five families: Myrtaceae, Melastomataceae, Lythraceae, Onagraceae, and Combretaceae. Despite the ecological and economic importance of the Myrtales, its phylogenetic relationships remain unresolved, with previous studies yielding inconsistent results based on gene fragments and plastid genomes. Genomic data, particularly single-copy/low-copy nuclear genes, provide valuable insights for resolving these phylogenetic relationships. However, phylogenetic studies still lack sufficient clade coverage, particularly for less studied families such as the Onagraceae. Epilobieae is an important tribe of the Onagraceae, characterized by substantial chromosomal number variation and whole genome duplication event (WGD). Nevertheless, the mechanisms of chromosomal evolution remain unresolved. Here, we sequenced and assembled the genomes of two representative species from the Epilobieae, Chamerion angustifolium (formerly Chamaenerion angustifolium) and Epilobium hirsutum, with genome sizes of 636.59 Mb and 400.23 Mb, respectively. Genome evolution analysis revealed two WGD events, during which the chromosome number increased from \(\:\text{n}=9\) to \(\:\text{n}=18\), followed by aneuploid reduction, leading to the diverse chromosomal numbers observed within this tribe. The WGD retained genes are enriched in Environmental information processing pathways, potentially enhancing resistance to biotic and abiotic stresses. These genes also show a preference for multiple exons, which may promote alternative splicing and functional diversification. Additionally, integrating genomic data from 24 Myrtales species, a robust phylogenetic framework based on 994 single-copy/low-copy orthogroups were reconstructed. Our results supported Combretaceae as the sister group to Myrtaceae and Melastomataceae, providing new insights into the evolutionary relationships within the Myrtales. 
653 |a Diversification 
653 |a Chromosome number 
653 |a Chromosomes 
653 |a Economic importance 
653 |a Evolution 
653 |a Data processing 
653 |a Environmental information 
653 |a Phylogenetics 
653 |a Genes 
653 |a Alternative splicing 
653 |a Genomes 
653 |a Flow cytometry 
653 |a Genomics 
653 |a Phylogeny 
653 |a Evolution & development 
653 |a Genetic engineering 
653 |a Genomic analysis 
653 |a Information processing 
653 |a Polyploidy 
653 |a Exons 
653 |a Onagraceae 
653 |a Combretaceae 
653 |a Myrtaceae 
653 |a Myrtales 
653 |a Melastomataceae 
653 |a Environmental 
700 1 |a Li, Wenkai 
700 1 |a Yang, Bing 
700 1 |a Shen, Yujia 
700 1 |a He, Jun 
700 1 |a Dunn, Derek W 
700 1 |a Li, Kang Huangoguo 
773 0 |t BMC Plant Biology  |g vol. 25 (2025), p. 1-15 
786 0 |d ProQuest  |t Health & Medical Collection 
856 4 1 |3 Citation/Abstract  |u https://www.proquest.com/docview/3237002584/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text  |u https://www.proquest.com/docview/3237002584/fulltext/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/3237002584/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch