Characteristics of Enterobacteria from Harmonia axyridis and Effects of Staphylococcus spp. on Development of H. axyridis

Moon, Chung-Woun; Kim, Ki-Kwang; Whang, Kyung-Sook; Seo, Mi-Ja; Youn, Young‐Nam; Yu, Yong-Man

doi:10.5656/ksae.2011.06.0.30

Cited by 2 publications

(2 citation statements)

References 37 publications

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“…The bacteria community composition described here shows overlap with the community composition of native H. axyridis (from Korea), which consisted of α‐ and γ‐ Proteobacteria , Actinobacteria , Firmicutes, and Deinococcus–Thermus (Kim, Han, Moon, Yu, & Whang, ; Moon et al, ). In contrast, the beetles used in this study showed Enterococcus and Lactococcus strains which were not identified in samples of native H. axyridis .…”

Section: Resultsmentioning

confidence: 76%

“…In aphids, S. sciuri is known to produce volatile semiochemicals that attract natural enemies. Bacteria of the genus Pseudomonas are known to produce IPMP and SBMP (Chen & Reineccius, ; Cheng, Reineccius, Bjorklund, & Leete, ; Dumont, Mourgues, & Adda, ; Filipiak et al, ; Gallois, Kergomard, & Adda, ; Miller, Scanlan, Lee, Libbey, & Morgan, ; Morgan, Libbey, & Scanlan, ) and Kim et al () and Moon et al () also described two Pseudomonas strains in native H. axyridis . Bacteria associated with Acinetobacter and Stenotrophomonas that were detected in the gut tissue of adults feeding on aphids are reported to synthesize pyrazines (Gao et al, ; Zou, Mo, Gu, Zhou, & Zhang, ).…”

Section: Resultsmentioning

confidence: 99%

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Symbiont‐mediated chemical defense in the invasive ladybird Harmonia axyridis

Schmidtberg

Shukla

Halitschke

et al. 2019

Ecology and Evolution

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The volatile alkylpyrazines methyl‐ and methoxypyrazines (MPs) present in the reflex bleeds of coccinellid beetles such as the harlequin ladybird beetle Harmonia axyridis are important semiochemicals that function in antipredatory defense behavior. Pyrazines have also been coadapted from a primarily defensive role into pheromones that function in intraspecific communication, attraction, and aggregation behavior. However, the biosynthesis of MPs in ladybird beetles is poorly understood. Here, we tested the hypothesis that MPs could be produced by microbial symbionts in H. axyridis , which generates four different MPs. The evaluation of tissue‐specific MP production showed that MP concentrations were highest in the gut tissue and hemolymph of the beetles rather than the fat body tissue as the presumed site of MP biosynthesis. Furthermore, manipulation of gut microbiota by antibiotic‐containing diets resulted in a lower MP content in adult beetles. The analysis of the bacterial community of the digestive tract revealed the presence of bacteria of the genera Serratia and Lactococcus which are reportedly able to produce MPs. In line with the known diet‐dependent production of MP in H. axyridis, we determined that the presence or relative abundance of some of the potential MP producers ( Enterococcus and Staphylococcus ) is also diet‐dependent. We hypothesize a potential role of the microbiota in MP production in H. axyridis as a possible example for outsourcing the synthesis of ecologically important semiochemicals to its gut bacteria.

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Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 99%

Symbiont‐mediated chemical defense in the invasive ladybird Harmonia axyridis

Schmidtberg

Shukla

Halitschke

et al. 2019

Ecology and Evolution

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Plant Growth Promotion and Biocontrol Potential of Various Phytopathogenic Fungi Using Gut Microbes of Allomyrina dichotoma Larva

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김²

2020

Res. Plant Dis

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This research was executed to select beneficial antagonists from digestive organ of Allomyrina dichotoma larva that can be put on environment friendly control against phytopathogenic fungi. We screened 38 bacterial strains inhibiting mycelial growth against eight plant pathogens through dual culture assay. The 10 strains among 38 bacterial strains were selected as beneficial microbes showing antifungal activity against Botrytis cinerea, Plasmodiophora brassicae, Colletotrichum acutatum and Phytophthora capsici through under greenhouse pot trials. The 10 bacterial strains that shown strongest antifungal activity were classified into 3 genera and 10 species, and identified as the genus Bacillus (DM146, DM152, DH2, and DH16), Paenibacillus (DF30, DH14, and DM142) and Streptomyces (DF137, DM48, and DH92) by morphological characteristics and 16s rRNA gene sequence. The 10 bacterial strains had solubilizing activity of insoluble phosphates, production of IAA (indole-3-acetic acid), β-1,3-glucanase and protease. Among the 10 bacterial strains, DM152 strain was produced significant enhancement of all growth parameters of chili pepper and tomato seedlings under greenhouse condition. Thus, this study demonstrated that gut microbes of Allomyrina dichotoma larva will be useful as a potential biocontrol agent against plant pathogens and biofertilizer.

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Characteristics of Enterobacteria from Harmonia axyridis and Effects of Staphylococcus spp. on Development of H. axyridis

Cited by 2 publications

References 37 publications

Symbiont‐mediated chemical defense in the invasive ladybird Harmonia axyridis

Symbiont‐mediated chemical defense in the invasive ladybird Harmonia axyridis

Plant Growth Promotion and Biocontrol Potential of Various Phytopathogenic Fungi Using Gut Microbes of Allomyrina dichotoma Larva

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