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Related Experiment Video

Updated: Mar 13, 2026

Development of Targeting Induced Local Lesions IN Genomes TILLING Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis

Development of Targeting Induced Local Lesions IN Genomes TILLING Populations in Small Grain Crops by Ethyl Methanesulfonate Mutagenesis

Published on: July 16, 2019

A sorghum pangenome reference improves global crop trait discovery.

Geoffrey P Morris¹, Avril M Harder², Adam L Healey²

¹Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO, USA. geoff.morris@colostate.edu.

|March 12, 2026

Summary

This study introduces a sorghum pangenome and diversity panel to explore crop genetic diversity. It reveals structural variations in key genes, aiding in accelerated breeding and trait discovery for improved crop resilience.

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Annotation of Plant Gene Function via Combined Genomics, Metabolomics and Informatics

Annotation of Plant Gene Function via Combined Genomics, Metabolomics and Informatics

Published on: June 17, 2012

Area of Science:

Plant genetics
Crop science
Bioinformatics

Background:

Global food security relies on diverse, locally-adapted crops from smallholder farms, not just industrialized agriculture.
Sorghum, a vital grain and bioenergy crop, possesses significant genetic diversity crucial for improvement.
Breeding efforts are often limited by highly specialized traits and breeding targets.

Purpose of the Study:

To construct a comprehensive sorghum pangenome reference and diversity panel.
To investigate the genetic diversity, historical adaptation, and structural variations within sorghum cultivars and landraces.
To demonstrate pangenome-accelerated trait discovery by linking genetic variation to phenotypic traits.

Main Methods:

Construction of a 33-member pangenome reference and a diversity panel (1,984 cultivars/landraces).
Analysis of structural variants, particularly in the SHATTERING1 domestication gene.
Application of landscape genomics to study gene flow and adaptation.
Correlation of structural variation in biosynthetic gene clusters with dhurrin concentration.

Main Results:

Identification of multiple nested and deeply diverged structural variants in SHATTERING1, supporting sorghum's multicentric origin.
Uncovering the complex genetic mosaic in contemporary breeding networks shaped by gene flow and secondary contact.
Demonstrated a link between structural variation in biosynthetic gene clusters and dhurrin levels in sorghum leaves.

Conclusions:

The developed pangenome and diversity panel are valuable resources for sorghum genetic improvement.
Understanding structural diversity is key to unlocking the potential of crop genetic resources.
This framework accelerates breeding and trait discovery, applicable to other crop species.