Biofungicidal Potential of Neosartorya (Aspergillus) Fischeri Antifungal Protein NFAP and Novel Synthetic γ-Core Peptides

Because of enormous crop losses worldwide due to pesticide-resistant plant pathogenic fungi, there is an increasing demand for the development of novel antifungal strategies in agriculture. Antifungal proteins (APs) and peptides are considered potential biofungicides; however, several factors limit...

Teljes leírás

Elmentve itt :
Bibliográfiai részletek
Szerzők: Tóth Liliána
Váradi Györgyi
Boros Éva
Borics Attila
Ficze Hargita
Nagy István
Tóth Gábor
Rákhely Gábor
Galgóczi László Norbert
Dokumentumtípus: Cikk
Megjelent: 2020
Sorozat:FRONTIERS IN MICROBIOLOGY 11
doi:10.3389/fmicb.2020.00820

mtmt:31312066
Online Access:http://publicatio.bibl.u-szeged.hu/19003
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520 3 |a Because of enormous crop losses worldwide due to pesticide-resistant plant pathogenic fungi, there is an increasing demand for the development of novel antifungal strategies in agriculture. Antifungal proteins (APs) and peptides are considered potential biofungicides; however, several factors limit their direct agricultural application, such as the high cost of production, narrow antifungal spectrum, and detrimental effects to plant development and human/animal health. This study evaluated the safety of the application of APs and peptides from the ascomycete Neosartorya fischeri as crop preservatives. The full-length N. fischeri AP (NFAP) and novel rationally designed γ-core peptide derivatives (PDs) γNFAP-opt and γNFAP-optGZ exhibited efficacy by inhibiting the growth of the agriculturally relevant filamentous ascomycetes in vitro. A high positive net charge, however, neither the hydrophilicity nor the primary structure supported the antifungal efficacy of these PDs. Further testing demonstrated that the antifungal activity did not require a conformational change of the β-pleated NFAP or the canonically ordered conformation of the synthetic PDs. Neither hemolysis nor cytotoxicity was observed when the NFAP and γNFAP-opt were applied at antifungally effective concentrations in human cell lines. Similarly, the Medicago truncatula plants that served as toxicity model and were grown from seedlings that were treated with NFAP, γNFAP-opt, or γNFAP-optGZ failed to exhibit morphological aberrations, reduction in primary root length, or the number of lateral roots. Crop protection experiments demonstrated that NFAP and associated antifungal active γ-core PDs were able to protect tomato fruits against the postharvest fungal pathogen Cladosporium herbarum. 
700 0 1 |a Váradi Györgyi  |e aut 
700 0 1 |a Boros Éva  |e aut 
700 0 1 |a Borics Attila  |e aut 
700 0 1 |a Ficze Hargita  |e aut 
700 0 1 |a Nagy István  |e aut 
700 0 1 |a Tóth Gábor  |e aut 
700 0 1 |a Rákhely Gábor  |e aut 
700 0 1 |a Galgóczi László Norbert  |e aut 
856 4 0 |u http://publicatio.bibl.u-szeged.hu/19003/1/TothLetalFM2020.pdf  |z Dokumentum-elérés