Phylogenomic proof of Recurrent Demipolyploidization and Evolutionary Stalling of the 'Triploid Bridge' in Arundo (Poaceae)
| Autor: | Enrico Barbaro, Gaurav Sablok, Mingai Li, Claudio Varotto, Omar Rota-Stabelli, Nicola Zadra, Wuhe Jike, Giorgio Bertorelle |
|---|---|
| Přispěvatelé: | Organismal and Evolutionary Biology Research Programme, Embryophylo |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Settore BIO/01 - BOTANICA GENERALE
0106 biological sciences 0301 basic medicine ARUNDO-DONAX L ACCURACY Adaptive evolution Arundogenus POLYPLOIDY CHROMOSOME-NUMBER 01 natural sciences lcsh:Chemistry MULTIPLE SEQUENCE ALIGNMENT polyplodization Genus Phylogenomics lcsh:QH301-705.5 Phylogeny Spectroscopy adaptive evolution ORIGIN phylogenomics General Medicine Arundo genus Arundo Computer Science Applications Molecular dating Arundinoideae Ploidy Evolution Biology Poaceae 010603 evolutionary biology Article Catalysis NO MECHANISMS Chromosome number evolution Polyplodization Evolution Molecular Polyploidy Inorganic Chemistry Arundo genus chromosome number evolution adaptive evolution phylogenomics molecular dating polyplodization 03 medical and health sciences Molecular evolution RECONSTRUCTION Physical and Theoretical Chemistry Molecular Biology molecular dating chromosome number evolution MODEL SELECTION Comparative genomics Organic Chemistry Molecular 15. Life on land biology.organism_classification 030104 developmental biology lcsh:Biology (General) lcsh:QD1-999 Evolutionary biology 1182 Biochemistry cell and molecular biology POACEAE |
| Zdroj: | International Journal of Molecular Sciences Volume 21 Issue 15 International Journal of Molecular Sciences, Vol 21, Iss 5247, p 5247 (2020) |
| Popis: | Polyploidization is a frequent phenomenon in plants, which entails the increase from one generation to the next by multiples of the haploid number of chromosomes. While tetraploidization is arguably the most common and stable outcome of polyploidization, over evolutionary time triploids often constitute only a transient phase, or a &ldquo triploid bridge&rdquo between diploid and tetraploid levels. In this study, we reconstructed in a robust phylogenomic and statistical framework the evolutionary history of polyploidization in Arundo, a small genus from the Poaceae family with promising biomass, bioenergy and phytoremediation species. Through the obtainment of 10 novel leaf transcriptomes for Arundo and outgroup species, our results prove that recurrent demiduplication has likely been a major driver of evolution in this species-poor genus. Molecular dating further demonstrates that the species originating by demiduplication stalled in the &ldquo for evolutionary times in the order of millions of years without undergoing tetratploidization. Nevertheless, we found signatures of molecular evolution highlighting some of the processes that accompanied the genus radiation. Our results clarify the complex nature of Arundo evolution and are valuable for future gene functional validation as well as reverse and comparative genomics efforts in the Arundo genus and other Arundinoideae. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|