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Dynamic proteomic changes in soft wheat seeds during accelerated ageing.
Yangyong Lv1, Pingping Tian1, Shuaibing Zhang1
1College of Biological Engineering, Henan University of Technology, Zhengzhou, China.
Peerj
|November 9, 2018
Summary
Soft wheat seeds show better storage tolerance than hard wheat during ageing. This is linked to increased defense proteins that help detoxify reactive oxygen species (ROS), improving seed quality.
Area of Science:
- Agricultural Science
- Plant Biology
- Biochemistry
Background:
- Soft wheat cultivars exhibit superior post-harvest storage tolerance compared to hard wheat cultivars under accelerated ageing conditions.
- Understanding the molecular mechanisms behind this difference is crucial for improving wheat seed longevity.
Purpose of the Study:
- To investigate the proteomic changes in soft wheat seeds during accelerated ageing.
- To identify proteins responsible for the enhanced storage tolerance of soft wheat.
Main Methods:
- Tandem mass tag-based quantitative proteomic analysis was employed.
- Soft wheat seeds were analyzed at various stages of accelerated ageing, indicated by decreasing germination ratios (97% to 6%).
Main Results:
- A total of 1,010 proteins were differentially regulated, with 519 upregulated and 491 downregulated.
- Upregulated proteins were predominantly involved in nutrient reservoir, enzyme activity, energy metabolism, and response to stimulus.
- Significantly, defense-associated proteins, including wheatwin-2, pathogenesis-related proteins, and those involved in reactive oxygen species (ROS) detoxification (glutathione S-transferase, glutathione synthetase), were upregulated in soft wheat.
Conclusions:
- The enhanced storage tolerance of soft wheat is potentially attributed to the upregulation of defense and ROS-detoxifying proteins.
- These findings offer novel proteomic insights into the dynamic processes of seed deterioration in soft wheat during storage.
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