期刊
PROTEIN SCIENCE
卷 27, 期 3, 页码 620-632出版社
WILEY
DOI: 10.1002/pro.3348
关键词
Prosystemin; natively unfolded; solanaceae; Spodoptera littoralis; plant defense
资金
- Ministero dell'Istruzione, dell'Universita e della Ricerca [PON RC 2007-2013]
- Italian Cluster Agrifood SafeSmart
Prosystemin, originally isolated from Lycopersicon esculentum, is a tomato pro-hormone of 200 aminoacid residues which releases a bioactive peptide of 18 aminoacids called Systemin. This signaling peptide is involved in the activation of defense genes in solanaceous plants in response to herbivore feeding damage. Using biochemical, biophysical and bioinformatics approaches we characterized Prosystemin, showing that it is an intrinsically disordered protein possessing a few secondary structure elements within the sequence. Plant treatment with recombinant Prosystemin promotes early and late plant defense genes, which limit the development and survival of Spodoptera littoralis larvae fed with treated plants.
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