caa a22 4500 606193251 CHVBK 20210128100908.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s10682-015-9769-4 doi (NATIONALLICENCE)springer-10.1007/s10682-015-9769-4 Impact of asymmetric male and female gamete dispersal on allelic diversity and spatial genetic structure in valley oak ( Quercus lobata Née) [Elektronische Daten] [Victoria Sork, Peter Smouse, Delphine Grivet, Douglas Scofield] The distribution and abundance of genetic diversity in plant populations is initiated by sexually asymmetric propagule dispersal through pollen and seeds. Because these processes occur serially, it is not transparent how each contributes to subsequent patterns of genetic diversity. Using combined seedling/seed coat assay for naturally distributed seedlings of Quercus lobata Née, we extracted male and female gametic genotypes, and then assessed (wind-vectored) paternal and (gravity- and animal-vectored) maternal contributions to spatially distributed allelic diversity. We evaluated 200 naturally recruited seedlings from 4 open patches away from any adult canopies (denoted ‘open'), and 174 seedlings from 14 patches immediately beneath adult canopies (denoted ‘canopy'). The open patches included 19% long distant dispersal events of >1km while the canopy patches contained seedlings from one tree overhead. For each patch type, we partitioned average allelic diversity for six microsatellite loci for the whole study site (γ) into separate within-patch (α) and among-patch (β) components, translated into among-patch divergence (δ). We found that α-diversity resulting from seed dispersal was much less than that from pollen dispersal in both patch types, while total γ-diversity across the site was similar. Divergence (δ) among canopy patches was significantly greater than δ among open patches. We then evaluated spatial genetic autocorrelation (kinship) patterns for both open and canopy strata, separately for male and female gametes. Female gametes showed sharply declining kinship with increasing distance for canopy patches and modestly for open patches. In sharp contrast, male gametes from both patches showed only subtle decline of kinship, but seedlings still showed significant structure across patch types. On balance, sexual asymmetry in propagule dispersal shapes both the abundance and distribution of allelic diversity, with pollen dispersal promoting overall diversity but reducing spatial structure, but seed-dispersal reduces overall diversity and markedly increases spatial genetic structure. Springer International Publishing Switzerland, 2015 Alpha and gamma diversity nationallicence Genetic diversity nationallicence Isolation by distance nationallicence Pollen dispersal nationallicence Seed dispersal nationallicence Spatial genetic structure nationallicence Sork Victoria Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 90095-7239, Los Angeles, CA, USA aut Smouse Peter Department of Ecology, Evolution and Natural Resources, Rutgers University, 08901-8551, New Brunswick, NJ, USA aut Grivet Delphine Department of Forest Ecology and Genetics, Center of Forest Research, CIFOR-National Institute for Agriculture and Food Research and Technology, Madrid, Spain aut Scofield Douglas Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 90095-7239, Los Angeles, CA, USA aut Evolutionary Ecology Springer International Publishing 29/6(2015-11-01), 927-945 0269-7653 29:6<927 2015 29 10682 https://doi.org/10.1007/s10682-015-9769-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10682-015-9769-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sork Victoria Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 90095-7239, Los Angeles, CA, USA aut NATIONALLICENCE 700 1- Smouse Peter Department of Ecology, Evolution and Natural Resources, Rutgers University, 08901-8551, New Brunswick, NJ, USA aut NATIONALLICENCE 700 1- Grivet Delphine Department of Forest Ecology and Genetics, Center of Forest Research, CIFOR-National Institute for Agriculture and Food Research and Technology, Madrid, Spain aut NATIONALLICENCE 700 1- Scofield Douglas Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 90095-7239, Los Angeles, CA, USA aut NATIONALLICENCE 773 0- Evolutionary Ecology Springer International Publishing 29/6(2015-11-01), 927-945 0269-7653 29:6<927 2015 29 10682