TY - JOUR

T1 - Cryptic divergences in the genus Pisum L. (peas), as revealed by phylogenetic analysis of plastid genomes

AU - Bogdanova, Vera S.

AU - Mglinets, Anatoliy V.

AU - Shatskaya, Natalia V.

AU - Kosterin, Oleg E.

AU - Solovyev, Vladimir I.

AU - Vasiliev, Gennadiy V.

N1 - Publisher Copyright: © 2018 Elsevier Inc.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - 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.

AB - 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.

KW - Introgression

KW - Phylogenetic trees

KW - Pisum L.

KW - Plant microevolution

KW - Plastid genome

KW - Wild peas

KW - MAXIMUM-LIKELIHOOD

KW - WILD-SPECIES ACCESSIONS

KW - MARKERS

KW - DOMESTICATION

KW - POLYMORPHISM

KW - NUCLEAR-CYTOPLASMIC INCOMPATIBILITY

KW - CHARACTERS

KW - GENETIC DIVERSITY

KW - SATIVUM L.

KW - INHERITANCE

KW - Genes, Plant

KW - Phylogeny

KW - Greece

KW - Base Sequence

KW - Cell Nucleus/genetics

KW - Mutation/genetics

KW - Black Sea

KW - Genome, Plastid

KW - Peas/classification

KW - Turkey

KW - Bayes Theorem

KW - Plastids/genetics

UR - http://www.scopus.com/inward/record.url?scp=85053133966&partnerID=8YFLogxK

U2 - 10.1016/j.ympev.2018.09.002

DO - 10.1016/j.ympev.2018.09.002

M3 - Article

C2 - 30195476

AN - SCOPUS:85053133966

VL - 129

SP - 280

EP - 290

JO - Molecular Phylogenetics and Evolution

JF - Molecular Phylogenetics and Evolution

SN - 1055-7903

ER -