Linked Life Data

19889720

Source:http://linkedlifedata.com/resource/pubmed/id/19889720

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2010-2-18
pubmed:abstractText
When considering the genetic implications of immigrant gene flow, it is important to evaluate both the proportions of immigrant gametes and their genetic composition. We simultaneously investigated paternal and maternal gene flow in dispersed seeds in a natural population of Pinus densiflora located along a ridge. The paternity and maternity of a total of 454 dispersed seeds (in 2004 and 2005) were accurately and separately assigned to 454 candidate adult trees, by analyzing the nuclear DNA of both diploid biparentally derived embryos and haploid maternally derived megagametophytes of the seeds. The relative genetic diversities and differences between within-population and immigrant groups of both paternally and maternally derived gametes (4 groups) that formed the genotypes of the seeds were evaluated. Using 8 microsatellite markers, we found that 64.0-72.6% of paternally derived gametes, and 17.8-20.2% of maternally derived gametes, were from other populations. Principal coordinate analysis showed that the 4 gamete groups tended to be plotted at different locations on the scattergram, indicating that they each have different genetic compositions. Substantial paternal and maternal immigrant gene flow occurred in this population, and therefore, the overall genetic variation of dispersed seeds is enhanced by both paternally and maternally derived immigrant gametes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1465-7333
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
101
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
144-53
pubmed:meshHeading
pubmed:articleTitle
Simultaneous evaluation of paternal and maternal immigrant gene flow and the implications for the overall genetic composition of Pinus densiflora dispersed seeds.
pubmed:affiliation
Forest Tree Breeding Center, Forestry and Forest Products Research Institute, Hitachi, Ibaraki 319-1301, Japan. ganchan@affrc.go.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't