Related Experiment Video
Updated: Mar 22, 2026
10:29
Measuring Gene Expression in Bombarded Barley Aleurone Layers with Increased Throughput
Published on: March 30, 2018
7.0K
Label-free proteome profiling reveals developmental-dependent patterns in young barley grains
Stephanie Kaspar-Schoenefeld1, Kathleen Merx1, Anna Maria Jozefowicz1
1Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Stadt Seeland OT Gatersleben, Germany.
Journal of Proteomics
|April 23, 2016
Summary
This study reveals two distinct protein patterns during barley grain development. Proteins are most abundant during the transition phase or storage phase, impacting grain quality and defense mechanisms.
Area of Science:
- Proteomics
- Plant Biology
- Biochemistry
Background:
- Barley grain quality is crucial for global food security.
- Understanding early grain development at the proteome level is limited.
- Early developmental processes significantly influence final grain weight and quality.
Purpose of the Study:
- To elucidate protein networks affecting early barley grain development.
- To identify key proteomic mechanisms during grain development.
- To understand how protein abundance changes across developmental phases.
Main Methods:
- NanoLC-based separation coupled with label-free mass spectrometry (MS) detection.
- Analysis of protein abundance across five developmental phases (3-16 days after flowering).
- Multivariate statistics, Western Blot analysis, and enzyme assays for verification.
Main Results:
- Two distinct protein abundance patterns were identified: transition phase (5-7 DAF) and storage phase (10-16 DAF).
- Transition phase proteins are linked to high metabolic activity, including protein synthesis and photosynthesis.
- Storage phase proteins are associated with storage product accumulation and pathogen defense.
Conclusions:
- Early barley grain development exhibits distinct proteomic phases influencing grain quality.
- Proteins play roles in metabolic activity, storage accumulation, and defense mechanisms.
- Protein isoform regulation is a key mechanism in enzyme activity during grain development.
