Interaction between wheat translationally controlled tumor protein TCTP and SNF1-related protein kinase SnRK1.

Nan MA; Jinzhu Qiao; Wenqian Tang; Tianjie Sun; Na Liu; Yan Chen; Xingtong LU; Shengfang Han; Dongmei Wang

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Interaction between wheat translationally controlled tumor protein TCTP and SNF1-related protein kinase SnRK1.

Author: Nan MA ¹ ; Jinzhu QIAO ¹ ; Wenqian TANG ¹ ; Tianjie SUN ¹ ; Na LIU ¹ ; Yan CHEN ¹ ; Xingtong LU ¹ ; Shengfang HAN ¹ ; Dongmei WANG ¹
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1. Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding 071001, Hebei, China.
Publication Type:Journal Article
Keywords: BiFC; Co-IP; SNF1- related protein kinase; translationally controlled tumor proteins; yeast two hybrid
MeSH: Basidiomycota; Humans; Neoplasms; Protein Biosynthesis; Protein-Serine-Threonine Kinases; Triticum
From: Chinese Journal of Biotechnology 2019;35(9):1686-1697
CountryChina
Language:Chinese
Abstract: Translationally controlled tumor proteins (TCTP) and SNF1- related protein kinase (SnRK1) are conserved and widely present in eukaryotic cells. TCTP regulates cell division, plant growth and development, and mediates plant resistance against pathogen infection. SnRK1 participates in a range of physiological processes including sugar metabolism and resistance to abiotic and biotic stresses. Previous work in our laboratory demonstrated that wheat TCTP can respond to Puccinia triticina infection and induce host defense responses. In order to further investigate the mechanism of TaTCTP in wheat resistance to Puccinia triticina infection, we used TAP (tandem affinity purification) and mass spectrometry to screen the potential interactants of TaTCTP. A SNF1- related protein kinase (SnRK1) was identified as a potential interacting protein of TaTCTP. The results of yeast two-hybrid assay showed that TCTP could interact with SnRK1 in yeast, and the yeast carrying TCTP and SnRK1 could grow on SD/-Leu/-Trp/-His/-Ade (SD/-LWHA) medium. The fluorescence signal of the interaction between TCTP and SnRK1 was found to be distributed in the cytoplasm in the Bi-fluorescense complementation experiment. Co-IP experiments further showed that TCTP and SnRK1 could interact in plant cells. This study lays an important foundation for further studying the mechanism of TaTCTP in the interaction between wheat and Puccinia triticina, and it play a great influence on further improving the molecular mechanism of wheat resistant to Puccinia triticina.