Related Experiment Video
Updated: Mar 11, 2026

A Fast Air-dry Dropping Chromosome Preparation Method Suitable for FISH in Plants
Published on: December 16, 2015
A Consensus Map in Cultivated Hexaploid Oat Reveals Conserved Grass Synteny with Substantial Subgenome Rearrangement.
Researchers developed a high-density consensus linkage map for hexaploid oat, revealing significant genome rearrangements. This map aids understanding of oat genome evolution and organization in cultivated varieties.
Area of Science:
- Plant genetics
- Genomics
- Crop science
Background:
- Hexaploid oat (Avena sativa L.) possesses a large, complex genome (12.5 Gb) with three ancestral genomes.
- Physical rearrangements within the oat genome have historically complicated linkage map development.
Purpose of the Study:
- To construct a single, high-density consensus linkage map for hexaploid oat.
- To represent the genetic diversity of commonly cultivated oat varieties.
Main Methods:
- Utilized data from cDNA-derived single-nucleotide polymorphism (SNP) arrays and genotyping-by-sequencing (GBS).
- Analyzed progeny from 12 biparental recombinant inbred line populations (19 parents).
- Integrated linkage groups to form 21 consensus chromosomes.
Main Results:
- Generated a framework consensus map with 7202 markers spanning 2843 cM.
- Placed an additional 9678 markers with lower confidence.
- Confirmed high-confidence physical assignments for nine chromosomes.
- Identified extensive genomic rearrangements, including translocations, relative to ancestral diploid genomes and rice (Oryza sativa L.).
Conclusions:
- The developed consensus map provides a valuable resource for hexaploid oat genetics.
- Significant chromosomal rearrangements impact oat genome organization and evolution.
- Population-specific rearrangements may explain variations in linkage group collinearity.
More Related Videos
09:33An Efficient Method for Quantitative, Single-cell Analysis of Chromatin Modification and Nuclear Architecture in Whole-mount Ovules in Arabidopsis
Published on: June 19, 2014
08:36Development of Targeting Induced Local Lesions IN Genomes TILLING Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis
Published on: July 16, 2019
Related Concept Videos
Synteny and Evolution
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Monohybrid Crosses
Gene Conversion
Conservative Site-specific Recombination and Phase Variation
The recognition sites for Cre recombinase called LoxP...
Crossing Over
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process...
Crossing Over