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  • Lack of pollinators selects for increased selfing, restricted gene flow and resource allocation in the rare Mediterranean sage Salvia brachyodon [Elektronski vir]
    Surina, Boštjan ...
    Range contraction and habitat fragmentation can cause biodiversity loss by creating conditions thatdirectly or indirectly affect the survival of plant populations. Fragmented habitats can alter ... pollinatorguilds and impact their behavior, which may result in pollen/pollinator limitation and selection forincreased selfing as a mechanism for reproductive assurance. We used Salvia brachyodon, a narrowlydistributed and endangered sage from eastern Adriatic, to test the consequences of range contractionand habitat fragmentation. Molecular data indicate a severe and relatively recent species rangereduction. While one population is reproductively almost completely isolated, moderate gene flow hasbeen detected between the remaining two populations. The high pollen‑to‑ovule ratio and the resultsof controlled hand pollination indicate that S. brachyodon has a mixed mating system. Quantitativeand qualitative differences in the community and behaviour of flower visitors resulted in limitedpollination services in one population where no effective pollinator other than pollen and nectarrobbers were observed. In this population, self‑pollination predominated over cross‑pollination.Various environmental factors, in which plant‑pollinator interactions play a pivotal role, have likelycreated selection pressures that have led to genetic and phenotypic differentiation and differentresource allocation strategies among populations.
    Vir: Scientific reports [Elektronski vir]. - ISSN 2045-2322 (Vol. 14, art. 5017, 2024, str. 1-17)
    Vrsta gradiva - e-članek ; neleposlovje za odrasle
    Leto - 2024
    Jezik - angleški
    COBISS.SI-ID - 188082435

    Povezava(-e):

    https://www.nature.com/articles/s41598-024-55344-7
    https://doi.org/10.1038/s41598-024-55344-7
    DOI

Vnos na polico