Proteomic Analysis of Wheat Grain Development
Summary
Proteomic analysis of wheat grain development has emerged as a powerful approach to unravel the dynamic changes in protein composition, post-translational modifications and metabolic pathways that underpin grain formation, filling and maturation. By mapping the proteome at successive stages—from early cell division through rapid starch and protein accumulation to desiccation and dormancy—researchers have identified key enzymes involved in carbohydrate metabolism, storage protein deposition and stress-defence mechanisms. Advanced workflows combining high-resolution mass spectrometry with quantitative labelling techniques enable the detection of hundreds to thousands of proteins, revealing temporal expression patterns and phosphorylation events that regulate enzyme activity and signal transduction. Integration of proteomic data with transcriptomic and metabolomic profiles has provided a systems-level view of the coordination between gene expression, protein synthesis and metabolite fluxes during grain development. This holistic picture has illuminated how environmental cues and genetic variation shape yield, nutritional quality and end-use properties such as baking performance. Moreover, the identification of cultivar-specific protein isoforms and post-translational marks offers new biomarkers for breeding and targeted manipulation of grain traits. As proteomic technologies continue to evolve, they promise finer resolution of subcellular compartments, deeper coverage of low-abundance regulatory proteins and more robust characterisation of protein–protein interactions, thereby driving innovation in wheat improvement programmes worldwide.
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Proteomic Analysis of Wheat Grain Development publication trend
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Technical terms
Proteomics: The large-scale study of proteins expressed in a biological sample at a given time.
iTRAQ: An isobaric tagging technique for simultaneous identification and quantification of proteins across multiple samples.
Phosphoproteome: The subset of the proteome comprising proteins modified by phosphorylation.
Two-dimensional electrophoresis (2-DE): A method that separates proteins by their isoelectric point and molecular weight.
References
- iTRAQ-based quantitative proteome and phosphoprotein characterization reveals the central metabolism changes involved in wheat grain development. BMC Genomics (2014).
- Proteomic analysis of middle and late stages of bread wheat (Triticum aestivum L.) grain development. Frontiers in Plant Science (2015).
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