Biological control of Meloidogyne incognita by Aspergillus niger F22 producing oxalic acid

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dc.contributor.authorJ Y Jang-
dc.contributor.authorY H Choi-
dc.contributor.authorT S Shin-
dc.contributor.authorT H Kim-
dc.contributor.authorKee Sun Shin-
dc.contributor.authorH W Park-
dc.contributor.authorY H Kim-
dc.contributor.authorH KIm-
dc.contributor.authorG J Choi-
dc.contributor.authorK S Jang-
dc.contributor.authorB Cha-
dc.contributor.authorI S Kim-
dc.contributor.authorE J Myung-
dc.contributor.authorJ C Kim-
dc.date.accessioned2017-04-19T10:22:48Z-
dc.date.available2017-04-19T10:22:48Z-
dc.date.issued2016-
dc.identifier.issn19326203-
dc.identifier.uri10.1371/journal.pone.0156230ko
dc.identifier.urihttps://oak.kribb.re.kr/handle/201005/13295-
dc.description.abstractRestricted usage of chemical nematicides has led to development of environmentally safe alternatives. A culture filtrate of Aspergillus niger F22 was highly active against Meloidogyne incognita with marked mortality of second-stage juveniles (J2s) and inhibition of egg hatching. The nematicidal component was identified as oxalic acid by organic acid analysis and gas chromatography-mass spectroscopy (GC-MS). Exposure to 2 mmol/L oxalic acid resulted in 100% juvenile mortality at 1 day after treatment and suppressed egg hatching by 95.6% at 7 days after treatment. Oxalic acid showed similar nematicidal activity against M. hapla, but was not highly toxic to Bursaphelenchus xylophilus. The fungus was incubated on solid medium and dried culture was used for preparation of a wettable powder-type (WP) formulation as an active ingredient. Two WP formulations, F22-WP10 (ai 10%) and oxalic acid-WP8 (ai 8%), were prepared using F22 solid culture and oxalic acid. In a field naturally infested with M. incognita, application of a mixture of F22-WP10 + oxalic acid-WP8 at 1,000- and 500-fold dilutions significantly reduced gall formation on the roots of watermelon plants by 58.8 and 70.7%, respectively, compared to the non-treated control. The disease control efficacy of the mixture of F22-WP10 + oxalic acid-WP8 was significantly higher than that of a chemical nematicide, Sunchungtan (ai 30% fosthiazate). These results suggest that A. niger F22 can be used as a microbial nematicide for the control of root-knot nematode disease.-
dc.publisherPublic Library of Science-
dc.titleBiological control of Meloidogyne incognita by Aspergillus niger F22 producing oxalic acid-
dc.title.alternativeBiological control of Meloidogyne incognita by Aspergillus niger F22 producing oxalic acid-
dc.typeArticle-
dc.citation.titlePLoS One-
dc.citation.number6-
dc.citation.endPagee0156230-
dc.citation.startPagee0156230-
dc.citation.volume11-
dc.contributor.affiliatedAuthorKee Sun Shin-
dc.contributor.alternativeName장자영-
dc.contributor.alternativeName최용호-
dc.contributor.alternativeName신택수-
dc.contributor.alternativeName김태훈-
dc.contributor.alternativeName신기선-
dc.contributor.alternativeName박해웅-
dc.contributor.alternativeName김영호-
dc.contributor.alternativeName김훈-
dc.contributor.alternativeName최경자-
dc.contributor.alternativeName장경수-
dc.contributor.alternativeName차병진-
dc.contributor.alternativeName김인선-
dc.contributor.alternativeName명을재-
dc.contributor.alternativeName김진철-
dc.identifier.bibliographicCitationPLoS One, vol. 11, no. 6, pp. e0156230-e0156230-
dc.identifier.doi10.1371/journal.pone.0156230-
dc.description.journalClassY-
Appears in Collections:
Division of Biomaterials Research > Industrial Bio-materials Research Center > 1. Journal Articles
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