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Front Plant Sci

Title:		Not Only Systemin: Prosystemin Harbors Other Active Regions Able to Protect Tomato Plants
Author(s):		Molisso D; Coppola M; Buonanno M; Di Lelio I; Aprile AM; Langella E; Rigano MM; Francesca S; Chiaiese P; Palmieri G; Tate R; Sinno M; Barra E; Becchimanzi A; Monti SM; Pennacchio F; Rao R;
Address:		"Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy. Institute of Biostructures and Bioimaging, National Research Council (IBB-CNR), Naples, Italy. Institute of Biosciences and BioResources, National Research Council (IBBR-CNR), Naples, Italy. Institute of Genetics and Biophysics, National Research Council (IGB-CNR), Naples, Italy. Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology (BAT Center), University of Naples Federico II, Naples, Italy"
Journal Title:		Front Plant Sci
Year:		2022
Volume:		20220524
Issue:
Page Number:		887674 -
DOI:		10.3389/fpls.2022.887674
ISSN/ISBN:		1664-462X (Print) 1664-462X (Electronic) 1664-462X (Linking)
Abstract:		"Prosystemin is a 200-amino acid precursor expressed in Solanaceae plants which releases at the C-terminal part a peptidic hormone called Systemin in response to wounding and herbivore attack. We recently showed that Prosystemin is not only a mere scaffold of Systemin but, even when deprived of Systemin, is biologically active. These results, combined with recent discoveries that Prosystemin is an intrinsically disordered protein containing disordered regions within its sequence, prompted us to investigate the N-terminal portions of the precursor, which contribute to the greatest disorder within the sequence. To this aim, PS1-70 and PS1-120 were designed, produced, and structurally and functionally characterized. Both the fragments, which maintained their intrinsic disorder, were able to induce defense-related genes and to protect tomato plants against Botrytis cinerea and Spodoptera littoralis larvae. Intriguingly, the biological activity of each of the two N-terminal fragments and of Systemin is similar but not quite the same and does not show any toxicity on experimental non-targets considered. These regions account for different anti-stress activities conferred to tomato plants by their overexpression. The two N-terminal fragments identified in this study may represent new promising tools for sustainable crop protection"
Keywords:		bioactivity endogenous defense fragments insect herbivores natively unfolded not direct toxicity effect phytopathogenic fungi tomato protection;
Notes:		"PubMed-not-MEDLINEMolisso, Donata Coppola, Mariangela Buonanno, Martina Di Lelio, Ilaria Aprile, Anna Maria Langella, Emma Rigano, Maria Manuela Francesca, Silvana Chiaiese, Pasquale Palmieri, Gianna Tate, Rosarita Sinno, Martina Barra, Eleonora Becchimanzi, Andrea Monti, Simona Maria Pennacchio, Francesco Rao, Rosa eng Switzerland 2022/06/11 Front Plant Sci. 2022 May 24; 13:887674. doi: 10.3389/fpls.2022.887674. eCollection 2022"