A new nematicidal compound produced by Streptomyces albogriseolus HA10002

Zeng, Qiandong; Huang, Huiqin; Zhu, Jun; Fang, Zongjuan; Sun, Qianguang; Bao, Siqi

doi:10.1007/s10482-013-9890-8

Cited by 48 publications

(27 citation statements)

References 14 publications

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“…4 ). All of these taxa are members of the Actinobacteria, which include many populations that have been shown to promote plant growth, mobilise nutrients and suppress bacterial, fungal or viral phytopathogens 26 27 28 29 30 . For this reason, the observed changes in the relative abundances of actinobacterial populations in our study, may have had functional consequences for the host, which deserve further investigation in future studies.…”

Section: Resultsmentioning

confidence: 99%

Effects of jasmonic acid signalling on the wheat microbiome differ between body sites

Liu

Carvalhais

Schenk

et al. 2017

Sci Rep

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Jasmonic acid (JA) signalling helps plants to defend themselves against necrotrophic pathogens and herbivorous insects and has been shown to influence the root microbiome of Arabidopsis thaliana. In this study, we determined whether JA signalling influences the diversity and functioning of the wheat (Triticum aestivum) microbiome and whether these effects are specific to particular parts of the plant. Activation of the JA pathway was achieved via exogenous application of methyl jasmonate and was confirmed by significant increases in the abundance of 10 JA-signalling-related gene transcripts. Phylogenetic marker gene sequencing revealed that JA signalling reduced the diversity and changed the composition of root endophytic but not shoot endophytic or rhizosphere bacterial communities. The total enzymatic activity and substrate utilisation profiles of rhizosphere bacterial communities were not affected by JA signalling. Our findings indicate that the effects of JA signalling on the wheat microbiome are specific to individual plant compartments.

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Section: Resultsmentioning

confidence: 99%

Effects of jasmonic acid signalling on the wheat microbiome differ between body sites

Liu

Carvalhais

Schenk

et al. 2017

Sci Rep

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“…So far, many nematicidal agents have been discovered from microorganisms such as bacteria, and fungi , which suggested that the microorganism‐based resources could serve as an abundant reservoir to explore the effective nematicidal agents. In this work, several compounds were obtained from SMrs28.…”

Section: Resultsmentioning

confidence: 99%

Isolation and identification of chemical constituents from the bacterium Bacillus sp. and their nematicidal activities

Zeng

Jin

et al. 2015

J. Basic Microbiol.

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A strain SMrs28 was isolated from the rhizosphere soil of a toxic plant Stellera chamaejasme and identified as Bacillus sp. on the basis of morphological and partial 16S rRNA gene sequence analysis. The crude extract of SMrs28 fermentation broth showed strong nematocidal activities in preliminary test. To define the active nematocidal metabolites of SMrs28, a novel compound (1), 4-oxabicyclo[3.2.2]nona-1(7), 5,8-triene, along with five known compounds (2-6), were isolated from the strain by various column chromatographic techniques and characterized on the basis of spectroscopic analysis. Results of the in vitro nematicidal tests showed that the metabolites presented different levels of activity at certain exposure conditions. Compounds (1-3) displayed LC50 values of 904.12, 451.26, 232.98 µg/ml and 1594.0, 366.62, 206.38 µg/ml against Bursaphelenchus xylophilus and Ditylenchus destructor at 72 h, respectively. This is the first report of the nematicidal activity of the compounds as constituents of Bacillus sp.. Our findings help to find potential chemical structures to develop nematicides from microbial source for the management of nematode-infected plant diseases.

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“…on plant parasitic nematodes. Recently a new nematicidal compound named as fungichromin B produced by Streptomyces albogriseolus was isolated against M. incognita which is having antifungal properties also (Qingfei Zeng et al, 2013). Similarly Nematicidal activity of fervenulin isolated from a nemati- cidal actinomycete, Streptomyces sp.…”

Section: Resultsmentioning

confidence: 99%

Biocontrol and growth promotive potential of <i>Streptomyces</i> spp. in black pepper (<i>Piper nigrum</i> L.)

Bhai

Lijina

Prameela

et al. 2017

JBC

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Actinomycetes isolated from the rhizosphere of black pepper and from vermicompost were tested for their antagonistic effect against Phytophthora capsici and Radopholus similis, the causal agents of foot rot and slow decline diseases of black pepper. Based on in vitro evaluations, four isolates were shortlisted (IISR Act2, IISR Act5, IISR Act6, and IISR Act9) and subjected to in vivo evaluation for Phytophthora infection by challenge inoculation and also greenhouse evaluation for growth promotion in black pepper. Rooted plants of black pepper were raised in soil amended with Actinomycetes strains individually and in combinations in portray and were transplanted into earthenware pots containing potting mixture amended with respective actinomycetes keeping un-amended plants as control. Observations were recorded on growth parameters like plant height, root weight, shoot weight and root infection by nematodes. Besides, soil was also analyzed for pH, dehydrogenase activity, EC and NPK content to know the influence of actinomycetes on soil microflora as well as on nutrient status. The results showed that consortia are more effective than individual isolates. Consortia holding IISR Act5+IISR Act9 were found highly effective in enhancing all the growth parameters followed by IISR Act2+ IISR Act9 and IISR Act2 + IISR Act5. The dehydrogenase activity was found higher in these consortia showing the higher microbial metabolic activity. Root lesions were also negligible in these treatments. Being effective in growth promotion as well as antagonistic activity, the isolates were tested for plant growth promotion and biocontrol traits. Among the isolates, IISR Act9 was found highly efficient in IAA production (119µg/ml) when compared to IISR Act2 (36.25µg/ml) and IISR Act5 (32.4µg/ml). Hence based on the growth promotive and pathogen suppressive effect, the consortia of either IISR Act5+IISR Act9 , IISR Act2+IISR Act9 or IISR Act2+IISR Act5 can be effectively used in black pepper for growth promotion and biological control of foot rot and slow decline diseases. The potential actinomycetes were identified as Streptomyces spp. as per Bergey's manual and rpoB gene sequence similarity of which IISR Act2 is identified as Streptomyces sp., IISR Act9 as Streptomyces albus and IISR Act5 as Streptomyces sp.

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A new nematicidal compound produced by Streptomyces albogriseolus HA10002

Cited by 48 publications

References 14 publications

Effects of jasmonic acid signalling on the wheat microbiome differ between body sites

Effects of jasmonic acid signalling on the wheat microbiome differ between body sites

Isolation and identification of chemical constituents from the bacterium Bacillus sp. and their nematicidal activities

Biocontrol and growth promotive potential of <i>Streptomyces</i> spp. in black pepper (<i>Piper nigrum</i> L.)

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