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Phosphoproteomics Analysis of the Systemin Signaling Pathway in tomato.

Systemin is a small peptide with important functions in plant wound response signaling. To elucidate systemin perception and signal transduction mechanisms, a phosphoproteomic profiling study was performed to reconstruct a systemin-specific kinase/phosphatase signaling network. Time course analyses...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Ahmad, Fatima Haj
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Göttingen : Cuvillier Verlag, 2019.
Colección:Schriftenreihe zur Physiologie und Biochemie der Pflanzen.
Temas:
Acceso en línea:Texto completo

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245 1 0 |a Phosphoproteomics Analysis of the Systemin Signaling Pathway in tomato. 
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520 |a Systemin is a small peptide with important functions in plant wound response signaling. To elucidate systemin perception and signal transduction mechanisms, a phosphoproteomic profiling study was performed to reconstruct a systemin-specific kinase/phosphatase signaling network. Time course analyses revealed early events at the plasma membrane, such as dephosphorylation of H+-ATPase, and the phosphorylation of NADPH-oxidase and Ca2+-ATPase in response to systemin. Later responses included transient phosphorylation of small GTPases and vesicle trafficking proteins, as well as transcription factors. Based on a correlation analysis of systemin-induced phosphorylation profiles, substrate candidates for 44 systemin-responsive kinases and 9 phosphatases were predicted, some of which are involved in a regulatory circuit for the regulation of the plasma membrane H+-ATPase. In this regulatory model, H+-ATPase LHA1 is rapidly de-phosphorylated at its C-terminal regulatory residue T955 by phosphatase PLL5, resulting in the alkalization of the growth medium within two minutes of systemin treatment. LHA1 is re-activated by MAP-Kinase MPK2 later in the systemin response. A valuable resource of proteomic events involved in the systemin signaling cascade is provided with a focus on the prediction of substrates to early systemin-responsive kinases and phosphatases. 
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650 0 |a Plants  |x Wounds and injuries. 
650 0 |a Tomatoes. 
650 0 |a Peptides. 
650 6 |a Plantes  |x Lésions et blessures. 
650 6 |a Tomates. 
650 6 |a Peptides. 
650 7 |a tomato.  |2 aat 
650 7 |a Peptides  |2 fast 
650 7 |a Plants  |x Wounds and injuries  |2 fast 
650 7 |a Tomatoes  |2 fast 
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830 0 |a Schriftenreihe zur Physiologie und Biochemie der Pflanzen. 
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