Journal of Integrative Agriculture ›› 2016, Vol. 15 ›› Issue (12): 2795-2802.DOI: 10.1016/S2095-3119(16)61444-2

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  • 收稿日期:2016-02-24 出版日期:2016-12-01 发布日期:2016-12-02

Antimicrobial, herbicidal and antifeedant activities of mansonone E from the heartwoods of Mansonia gagei Drumm.

Rachsawan Mongkol1, Warinthorn Chavasiri2   

  1. 1 Program in Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
    2 Natural Products Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
  • Received:2016-02-24 Online:2016-12-01 Published:2016-12-02
  • Contact: Warinthorn Chavasiri, Tel: +66-2-2187625, E-mail: warinthorn.c@chula.ac.th
  • About author:Rachsawan Mongkol, E-mail: rachy_067@hotmail.com
  • Supported by:

    The authors would like to thank the office of the Higher Education Commission, Thailand for supporting grant fund under the program Strategic Scholarships for Frontier Research Network for the Ph D Program Thai Doctoral degree for this research (77/2551) and the 90th Anniversary of Chulalongkorn University Fund (Ratchadaphiseksomphot Endowment Fund, GCUGR11244525026D24).

Abstract:     In vitro biological activities including anti-phytopathogenic fungi, antibacterial, antifeedant and herbicidal activities of the extracts from the heartwoods of Mansonia gagei Drumm. were evaluated. The dichloromethane (DCM) extract displayed antifungal activity against four plant pathogenic fungi (Alternaria porri, Colletotrichum gloeosporioides, Fusarium oxysporum and Phytophthora parasitica) higher than the methanolic (MeOH) extract. The separation of the DCM extract using bioassay guided antifungal activity against P. parasitica led to the isolation of mansorins A, B, and C, mansonones C, E, G and H. Among isolated compounds, mansonone E displayed the highest antifungal activity against P. parasitica, followed by mansonone C, mansorin B and mansonone G. This potent compound revealed the same minimum inhibitory concentrations (MIC) of 31 µg mL–1 against C. gloeosporioides and P. parasitica, and minimum fungicidal concentration (MFC) of 31 and 125 µg mL–1, respectively. Moreover, mansonone E exhibited highly significant antibacterial activity against both Xanthomonas oryzae pv. oryzae (Xoo) and X. oryzae pv. oryzicola (Xoc) with MIC and minimum bactericidal concentration (MBC) as 7.8 and >500 µg mL–1, respectively. This compound furthermore could inhibit the feed of Spodoptera litura with 45.9% antifeedant and significantly herbicidal activity reduced the shoot and root growth of Brassica chinensis, Oryza sativa, Mimosa pigra and Echinochlooa crus-galli. Mansonone E has potential as a new natural pesticide for agricultural plant pathogen management.

Key words: Mansonia gagei Drumm. ,  mansonone E ,  plant pathogens ,  antifungal ,  antibacterial ,  antifeedant ,  herbicidal activities