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Title: | Tracking the Biostimulatory Effect of Fractions from a Commercial Plant Protein Hydrolysate in Greenhouse-Grown Lettuce | Authors: | Cristofano, Francesco El-Nakhel, Christophe Colla, Giuseppe Cardarelli, Mariateresa Pii, Youry Lucini, Luigi Rouphael, Youssef |
Journal: | ANTIOXIDANTS | Issue Date: | 2023 | Abstract: | Protein hydrolysate biostimulants are environmentally friendly options for the reduction of nitrogen input, but their plant growth-promoting mechanisms are still not completely unveiled. Here, to put the “signaling peptide theory” to the test, a greenhouse experiment was undertaken using low (1 mM) and optimal (8 mM) NO3-treated butterhead lettuce and three molecular fractions (PH1 (>10 kDa), PH2 (1−10 kDa) and PH3 (<10 kDa) fractions), in addition to the whole product Vegamin®: PH, in a randomized block design. PH1 and PH3 significantly increased fresh yield (+8%) under optimal (lighter leaves), but not under low (darker leaves) NO3 conditions. Total ascorbic acid, lutein and β-carotene increased with PH3, and disinapoylgentobiose and kaempferol-3-hydroxyferuloyl-sophorosie-7-glucoside content increased with PH (whole/fractions) treatments, particularly under low NO3 conditions. The complete hydrolysate and analyzed peptide fractions have differential biostimulatory effects, enhancing the growth and nutritional quality of lettuce. |
URI: | http://hdl.handle.net/2067/52660 | ISSN: | 2076-3921 | DOI: | 10.3390/antiox12010107 |
Appears in Collections: | A1. Articolo in rivista |
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2023_Cristofano_Antioxidants.pdf | 964.32 kB | Adobe PDF | View/Open |
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