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Plant Breeding and Biotechnology

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Related Experiment Video

Updated: Sep 4, 2025

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput

Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput

Published on: March 30, 2018

Improving bread wheat yield through modulating an unselected AP2/ERF gene.

Yuange Wang¹, Fei Du¹, Jian Wang¹

¹State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Beijing, China.

|July 19, 2022

Summary

This summary is machine-generated.

Researchers identified DUO-B1, a gene regulating wheat inflorescence architecture. Its mutations increase grain number and yield, offering new potential for crop improvement without negatively impacting other traits.

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Area of Science:

Plant genetics
Crop science
Molecular biology

Background:

Crop breeding utilizes natural genetic variation, but new variations are needed for increasing global food demand.
Inflorescence architecture, specifically grain number per spike, is a key factor in bread wheat (Triticum aestivum L.) yield.

Purpose of the Study:

To identify genetic factors regulating spike inflorescence architecture in bread wheat.
To explore the potential of novel genetic variations for enhancing wheat yield.

Main Methods:

Utilized Brachypodium distachyon as a model system to identify genes involved in inflorescence development.
Characterized the function of the identified DUO-B1 gene, an APETALA2/ethylene response factor (AP2/ERF) transcription factor.
Performed pan-genome analysis to assess the breeding potential of DUO-B1.

Main Results:

Identified DUO-B1, a gene regulating spike inflorescence architecture in bread wheat.
Mutations in DUO-B1 resulted in mild supernumerary spikelets and increased grain number per spike.
Field trials demonstrated that DUO-B1 mutations significantly increased wheat yield without adverse effects on other agronomic traits.
DUO-B1 was found to suppress cell division and regulate the expression of BH^t/WFZP.

Conclusions:

DUO-B1 is a promising target for genetic improvement of wheat yield.
The identified DUO-B1 gene has not been exploited in current breeding programs.
Further utilization of DUO-B1 holds significant potential for increasing future wheat production.