Phylogenetic relationships among <i>Pisum</i> L. species from Asia Minor inferred from pollen and seed coat morphology

Aydin, Hamza; Sarı, Duygu; Sari, Hatice; Eker, Tuba; Aykurt, Candan; Toker, Cengiz

doi:10.1080/00173134.2021.1912820

Cited by 1 publication

(1 citation statement)

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“…Except for leaflet serration pattern and minor variations of pigment pattern on stems, pods and seeds, the species portrays a relatively consistent morphology, making identification of accessions using morphology extremely difficult. The recent collection of an extensive sample of P. fulvum germplasm from Israel ( Naim-Feil et al., 2017 ), as well as the availability of additional accessions from Turkey, Jordan, and Syria in various germplasm repositories ( Aydin et al., 2021 ; Rispail et al., 2023 ) makes this species an excellent candidate for the study of evolution and adaption in a close relative to an important crop. Although Bayesian or PAUP analysis of SGR sequences does not appear to reflect the overall evolutionary history of the species, correlations between SGR genotype and geographical or ecological parameters can provide insight into several aspects of its biology and phylogeny.…”

Section: Discussionmentioning

confidence: 99%

A hypervariable intron of the STAYGREEN locus provides excellent discrimination among Pisum fulvum accessions and reveals evidence for a relatively recent hybridization event with Pisum sativum

Weeden,

Lavin,

Abbo

et al. 2023

Front. Plant Sci.

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An analysis of 82 non-synonymous Pisum fulvum accessions for sequence variation in a fragment of the STAYGREEN (SGR) locus revealed 57 alleles, most of which differed in indel structure. Eight additional P. fulvum accessions, each supposedly synonymous with a different accession of the initial group, were also analyzed. In every case the paired synonymous accessions possessed the same SGR sequence but varied slightly for a 6-trait morphological phenotype, indicating that SGR sequence is a much more reliable indicator of accession identity than is a morphological characterization. SGR sequence analysis confirmed our previous finding that P. fulvum accessions separate into two allele groups. This division was not supported by results of previous studies that were based on sequences distributed across the entire genome, suggesting that the division may have been produced by selection at a nearby locus and that the SGR phylogeny may not be good indicator of overall relationships within the species. One P. fulvum accession, PI 595941 (=JI1796), displayed an SGR sequence outside the variation typical of the species. Instead, its allele resembled alleles limited to a set of Pisum sativum landraces from the Middle East, suggesting hybridization between ancestors of PI 595941 and some primitive form of domesticated P. sativum. With one exception from the extreme northwest corner of Israel, P. fulvum accessions collected north of latitude 35.5° N were fixed for alleles from group A. These northern accessions also displayed greatly reduced SGR sequence diversity compared to group A accessions collected from other regions, suggesting that the northern populations may represent recent extensions of the range of the species. Group B accessions were distributed from Lake Tiberias south and were generally sympatric with the southern group A accessions. Although group B accessions occupied a smaller area than group A, the SGR sequence diversity in this group (28 alleles in 33 accessions) exceeded that for group A.

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Section: Discussionmentioning

confidence: 99%