An open-pollinated design for mapping imprinting genes in natural populations.

Abstract:

:With the increasing recognition of its role in trait and disease development, it is crucial to account for genetic imprinting to illustrate the genetic architecture of complex traits. Genetic mapping can be innovated to test and estimate effects of genetic imprinting in a segregating population derived from experimental crosses. Here, we describe and assess a design for imprinting detection in natural plant populations. This design is to sample maternal plants at random from a natural population and collect open-pollinated (OP) seeds randomly from each maternal plant and germinate them into seedlings. A two-stage hierarchical platform is constructed to jointly analyze maternal and OP progeny markers. Through tracing the segregation and transmission of alleles from the parental to progeny generation, this platform allows parent-of-origin-dependent gene expression to be discerned, providing an avenue to estimate the effect of imprinting genes on a quantitative trait. The design is derived to estimate imprinting effects expressed at the haplotype level. Its usefulness and utilization were validated through computer simulation. This OP-based design provides a tool to detect the genomic distribution and pattern of imprinting genes as an important component of heritable variation that is neglected in traditional genetic studies of complex traits.

journal_name

Brief Bioinform

authors

Sun L,Zhu X,Bo W,Xu F,Cheng T,Zhang Q,Wu R

doi

10.1093/bib/bbu019

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

449-60

issue

3

eissn

1467-5463

issn

1477-4054

pii

bbu019

journal_volume

16

pub_type

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