Cryptic divergences in the genus Pisum L. (peas), as revealed by phylogenetic analysis of plastid genomes
| Autor: | Anatoliy V. Mglinets, Vera S. Bogdanova, Gennadiy V. Vasiliev, Vladimir I. Solovyev, Oleg E. Kosterin, Natalia V. Shatskaya |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Nuclear gene Turkey Genome Plastid Subspecies Biology Genes Plant Genome 03 medical and health sciences Genus Genetics Plastids Plastid Molecular Biology Ecology Evolution Behavior and Systematics Phylogeny Plant evolution Cell Nucleus Phylogenetic tree Base Sequence Greece Peas food and beverages Bayes Theorem 030104 developmental biology Plastid inheritance Black Sea Evolutionary biology Mutation |
| Zdroj: | Molecular phylogenetics and evolution. 129 |
| ISSN: | 1095-9513 |
| Popis: | Organellar genomes may shed light on complicated patterns of plant evolution at inter- and intraspecies level. Primary structure of plastid genomes sequenced in this study and taken from public databases was characterised and compared in 22 diverse, mostly wild representatives of the genus Pisum (peas). Phylogenetic trees reconstructed via Bayesian approach on the basis of entire plastid genomes resembled those reconstructed on the basis of a nuclear gene His5 coding for a minor histone H1 subtype. They reveal Pisum fulvum as an early divergence of the genus but do not support other taxonomical subdivisions. The positions of three accessions, classified as P. sativum subsp. elatius (the wild subspecies of the common pea), appeared quite unexpected. On the entire plastid genome tree, two accessions, from the Black Sea area of Turkey and Georgia, clustered with representatives of another species, P. fulvum, while the other, from Greece, was the first divergence of the P. sativum branch. We suppose these unusual plastid genomes to be ancient lineages ascending to a ‘missing link’ between P. fulvum and P. sativum, represented by accession Pe 013 from Turkey. Accessions with common pea appearance but deeply diverged plastids could occur through occasional crossing of diverged pea lines in the past and biparental plastid inheritance, both events being possible in peas. |
| Databáze: | OpenAIRE |
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