Helichrysum stoechas (L.) Moench Inflorescence Extract for Tomato Disease Management
Loading...
Date
2023
Authors
Sánchez Hernández, EvaÁlvarez Martínez, Javier
González García, Vicente
Casanova Gascón, José
Martín Gil, Jesús
Martín Ramos, Pablo
Journal Title
Journal ISSN
Volume Title
Publisher
Typology
articleArticle
Abstract
Helichrysum stoechas is a singular halophyte that has been shown to have anti-inflammatory, antioxidant, and allelopathic properties. In the work presented herein, we have characterized its inflorescences hydromethanolic extract and assessed its antifungal activity for the pre- and postharvest management of tomato crop diseases. Gas chromatography–mass spectrometry characterization of the extract showed that 4-ethenyl-1,3-benzenediol, 2,3-dihydro-benzofuran, quinic acid, 3,5-dihydroxy-6,7,8-trimethoxy-2-phenyl-4H-1-benzopyran-4-one, 1,6-anhydro-?-D-glucopyranose, catechol, scopoletin, and maltol were the main constituents. The co-occurrence of pyranones, benzenediols, and quinic acids as phytoconstituents of H. stoechas extract resulted in promising in vitro minimum inhibitory concentrations of 500, 375, 500, 187.5, 187.5, and 375 ?g·mL?1 against mycelia of Alternaria alternata, Colletotrichum coccodes, Fusarium oxysporum f. sp. lycopersici, Rhizoctonia solani, Sclerotinia sclerotiorum, and Verticillium dahliae, respectively. Further, to assess the potential of H. stoechas inflorescence extract for postharvest tomato crop protection, ex situ tests were conducted against C. coccodes, obtaining high protection at a dose of 750 ?g·mL?1. Taking into consideration that the demonstrated activity is among the highest reported to date for plant extracts and comparable to that of the synthetic fungicides tested as positive controls, H. stoechas inflorescence extract may be put forward as a promising biorational and may deserve further testing in field-scale studies.
Description
Keywords
Bibliographic citation
Molecules, 2023, 28, 15, 5861
AGROVOC subjects
TomateProtección de las plantas
Halofitas
Eco-productos
Alternaria alternata
Colletotrichum coccodes
Fusarium oxysporum f. sp. lycopersici
Rhizoctonia solani
Sclerotinia sclerotiorum
Verticillium dahliae
Cg (cromatografía de gases)
Sponsorship
This research was partly funded through the PID2020-116055RB-C22 I+D+i project funded by MCIN/AEI/10.13039/501100011003; and through the A11-20R project funded by the Aragon Government.