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Identification of Phosphorylated Proteins in Response to Salt Stress in Wheat Embryo and Endosperm during Seed Germination

  • Physiology
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Abstract

Seed germination is a new beginning for the crop life cycle, which is closely related to seed sprouting and subsequent plant growth and development, and ultimately affects grain yield and quality. Salt stress is one of the most important abiotic stress factors that restrict crop production. Therefore, it is highly important to improve crop salt tolerance and sufficient utilization of saline-alkali land. In this study, we identified the phosphorylated proteins involved in salt stress response by combining SEM, 2-DE, Pro-Q Diamond staining and tandem mass spectrometry. The results showed that salt stress significantly inhibited seed germination and starch degradation. In total, 14 phosphorylated protein spots (11 unique proteins) in the embryo and 6 phosphorylated protein spots (4 unique proteins) in the endosperm were identified, which mainly involved in stress/defense, protein metabolism and energy metabolism. The phosphorylation of some proteins such as cold regulated proteins, 27K protein, EF-1β and superoxide dismutase could play important roles in salt stress tolerance.

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  1. These authors contributed equally to this work.

Authors and Affiliations

  1. College of Life Science, Capital Normal University, Beijing, 100048, China

    X. Luo, C. Han, X. Deng, D. Zhu, Y. Liu & Y. Yan

  2. Hubei Collaborative Innovation Center for Grain Industry (HCICGI), Yangtze University, Jingzhou, 434025, China

    Y. Yan

Authors
  1. X. Luo
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  2. C. Han
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  3. X. Deng
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  4. D. Zhu
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  5. Y. Liu
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  6. Y. Yan
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Correspondence to Y. Yan.

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Communicated by I. Molnár

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Luo, X., Han, C., Deng, X. et al. Identification of Phosphorylated Proteins in Response to Salt Stress in Wheat Embryo and Endosperm during Seed Germination. CEREAL RESEARCH COMMUNICATIONS 47, 53–66 (2019). https://doi.org/10.1556/0806.46.2018.061

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  • DOI: https://doi.org/10.1556/0806.46.2018.061

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