We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Genome-wide detection of genetic loci triggering uneven descending of gametes from a natural hybrid pine.
- Authors
Li, Shuxian; Tang, Zaixiang; Zhang, Defang; Ye, Ning; Xu, Chenwu; Yin, Tongming
- Abstract
Marker transmission ratio distortion (TRD) revealed in genetic mapping studies on distant crosses can be used to infer the genetic basis relating to reproductive barriers between species. Unlike measuring the degree of TRD by the overall number of segregation distorted markers in the affected genome regions, mapping the segregation distorting loci (SDL) provides reliable statistic parameters that help to confine the target genomic regions for further characterization at molecular level. Using the linkage map constructed for a natural hybrid of Pinus hwangshanensis and Pinus massoniana, we perform SDL analyses and align the established map to the loblolly pine consensus map. Altogether, six SDLs with relatively strong LOD supports are detected on four linkage groups of the established map. Since gametes inheriting different alternate chromatid blocks from the SDL affecting genome regions have uneven chance to descend to the offspring, the corresponding genome regions are supposed to play more significant roles in rendering the reproductive isolations between P. hwangshanensis and P. massoniana. This paper presents a case study on a crucial step for uncovering the hidden genetic factors that trigger the uneven descending of gametes in a natural hybrid pine.
- Subjects
LOCUS (Genetics); LOBLOLLY pine; PLANT genetics; PLANT gene mapping; GENETIC markers in plants; CASE studies
- Publication
Tree Genetics & Genomes, 2012, Vol 8, Issue 6, p1371
- ISSN
1614-2942
- Publication type
Article
- DOI
10.1007/s11295-012-0524-5