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Ilić B, Unković N, Knežević A, Savković Ž, Ljaljević Grbić M, Vukojević J, Jovanović Z, Makarov S, Lučić L. Multifaceted activity of millipede secretions: Antioxidant, antineurodegenerative, and anti-Fusarium effects of the defensive secretions of Pachyiulus hungaricus (Karsch, 1881) and Megaphyllum unilineatum (C. L. Koch, 1838) (Diplopoda: Julida). PLoS One 2019; 14:e0209999. [PMID: 30605481 PMCID: PMC6317802 DOI: 10.1371/journal.pone.0209999] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 12/15/2018] [Indexed: 12/22/2022] Open
Abstract
Members of the millipede order Julida rely on dominantly quinonic defensive secretions with several minor, non-quinonic components. The free radical-scavenging activities of ethanol, methanol, hexane, and dichloromethane extracts of defensive secretions emitted by Pachyiulus hungaricus (Karsch, 1881) and Megaphyllum unilineatum (C. L. Koch, 1838) were investigated using the ABTS, DPPH, and total reducing power (TRP) tests. The obtained extracts were also tested for inhibition of acetylcholinesterase and tyrosinase activity. Finally, the antifungal potential of both julid extracts was evaluated against seven Fusarium species. Secretions of both species showed activity against free radicals, acetylcholinesterase, tyrosinase, and all of the selected fungal species. The secretions of P. hungaricus exhibited a more potent antioxidative effect than did those of M. unilineatum, while there were no significant differences of antiacetylcholinesterase activity between the tested extracts. Only the hexane extract of M. unilineatum showed an effect on tyrosinase activity stronger than that of P. hungaricus. Fusarium sporotrichioides, F. graminearum, and F. verticillioides were the fungi most resistant to secretions of both julids. The Fusarium species most susceptible to the secretion of P. hungaricus was F. avenaceum, while the concentrations of M. unilienatum extracts needed to inhibit and completely suppress fungal growth were lowest in the case of their action on F. lateritium. Our data support previous findings that julid defensive secretions possess an antimicrobial potential and reveal their antioxidative and antineurodegenrative properties. Bearing in mind the chemical complexity of the tested defensive secretions, we presume that they can also exhibit other biological activities.
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Affiliation(s)
- Bojan Ilić
- Department of Animal Development, University of Belgrade—Faculty of Biology, Belgrade, Serbia
- * E-mail:
| | - Nikola Unković
- Department of Algology, Mycology, and Lichenology, University of Belgrade—Faculty of Biology, Belgrade, Serbia
| | - Aleksandar Knežević
- Department of Algology, Mycology, and Lichenology, University of Belgrade—Faculty of Biology, Belgrade, Serbia
| | - Željko Savković
- Department of Algology, Mycology, and Lichenology, University of Belgrade—Faculty of Biology, Belgrade, Serbia
| | - Milica Ljaljević Grbić
- Department of Algology, Mycology, and Lichenology, University of Belgrade—Faculty of Biology, Belgrade, Serbia
| | - Jelena Vukojević
- Department of Algology, Mycology, and Lichenology, University of Belgrade—Faculty of Biology, Belgrade, Serbia
| | - Zvezdana Jovanović
- Department of Animal Development, University of Belgrade—Faculty of Biology, Belgrade, Serbia
| | - Slobodan Makarov
- Department of Animal Development, University of Belgrade—Faculty of Biology, Belgrade, Serbia
| | - Luka Lučić
- Department of Animal Development, University of Belgrade—Faculty of Biology, Belgrade, Serbia
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Bodner M, Vagalinski B, Raspotnig G. Chemotaxonomic potential of exocrine alkyl esters in julid millipedes (Diplopoda: Julidae: Cylindroiulini). BIOCHEM SYST ECOL 2018. [DOI: 10.1016/j.bse.2018.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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