Suppression of Magnaporthe oryzae by culture filtrates of Streptomyces globisporus JK-1

Li, Qili; Jiang, Yinhui; Ning, Ping; Zheng, Lu; Huang, Junbin; Li, Guoqing; Hsiang, Tom

doi:10.1016/j.biocontrol.2011.04.013

Cited by 93 publications

(57 citation statements)

References 29 publications

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“…Li et al (2011) showed that the crude extract of Streptomyces globisporus inhibited mycelial growth, conidial germination and appressorial formation of M. oryzae in histological observations of cut leaves. According to Madrigal et al (1991) the secondary metabolite flavipine poduced by Epicoccum sp.…”

Section: Discussionmentioning

confidence: 99%

Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Sena¹,

Chaibub²,

Cortes³

et al. 2013

Trop. plant pathol.

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Epicoccum sp. showed in vitro antagonism to the rice pathogens Magnaporthe oryzae, Rhizoctonia solani, Sarocladium oryzae, Monographella albescens and Cochliobolus miyabeanus in dual culture. The colony growth of the rice blast fungus, M. oryzae, was reduced by 42.50%. The lethal doses (LD 50 ) determined based on probit-log dosage response curves at 3 and 6 hours after germination were 393.0 and 326.6 ppm, respectively. The crude extract (600 ppm) reduced appressorial formation by 95.68%. A greenhouse experiment comparing the relative efficiency of conidial suspension and crude extract of Epicoccum sp. in the suppression of leaf blast showed no statistical difference between both application methods. However, the crude extract of Epicoccum sp. (4000 ppm) 48 hours before the application of M. oryzae induced resistance and suppressed leaf blast by 97.6%. Scanning electron microscopy of rice leaves inoculated with crude extract of Epicoccum sp. and challenged with M. oryzae showed appressorial deformation on penetration phase. Peroxidase and β-1,3-glucanase activities increased in plants sprayed with crude extract of Epicoccum sp., 24 hours after the application of the challenger. PAL as well as chitinase activities increased 72 hours after challenge inoculation. Epicoccum sp. was shown to be a potential antagonist and inducer of resistance against M. oryzae.

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Section: Discussionmentioning

confidence: 99%

Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Sena¹,

Chaibub²,

Cortes³

et al. 2013

Trop. plant pathol.

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“…In other studies, the effects of these compounds on different soil borne fungi pathogen of chickpea have also been observed (Abo-Elyousr and Mohamed 2009). Non-volatile antifungal substances produced by Streptomyces globisporus JK-1 can inhibit the growth of Magnaporthe oryzae causing rice blast of rice (Li et al 2011). Production of chitinase was observed in all selected Streptomyces strains.…”

Section: Discussionmentioning

confidence: 95%

Evaluation of Streptomyces spp. against Fusarium oxysporum f. sp. ciceris for the management of chickpea wilt

Amini¹,

Agapoor²,

Ashengroph³

2016

Journal of Plant Protection Research

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Abstract:In this study, about 112 isolates of Streptomyces were isolated from chickpea rhizospheric soils. Among the isolated strains, five showed strong inhibitory effects against chickpea Fusarium wilt caused by Fusarium oxysporum f. sp. ciceris in vitro using plate assay and selected for further studies. The selected strains were identified as Streptomyces spp. based on morphological and biochemical characterization as well as 16S rDNA sequences analysis. Our results assigned them to strains related to genus of Streptomyces.In vitro, antagonistic effects of Streptomyces strains against the disease were evaluated through the dual-culture method, volatile and non-volatile metabolites, siderophore, protease and chitinase production. All bacterial strains inhibited mycelial growth of the pathogen ranging from 26 to 44.2% in dual culture assay. The non-volatile extract of five of the Streptomyces strains inhibited more than 50% growth of the pathogen, whereas volatile compounds were less effective on mycelial growth inhibition (20.2 to 33.4%). The ability of the biocontrol agents to produce siderophore and protease were varied, whereas, production of chitinase was detected for all strains. Results of the greenhouse assay indicated that all biocontrol agents reduced disease severity (ranging from 38.7 to 54.8%).Accordingly, strain KS62 showed higher control efficacy (54.8%). In addition, the biomass of chickpea plants (plant height and dry weight) significantly increased in plants treated with Streptomyces strains compared to non-bacterized control. The results of this study showed that it may be possible to manage chickpea Fusarium wilt disease effectively by using Streptomyces species, as biocontrol agents. Therefore, evaluating their efficiency under field conditions is needed.

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“…The fungicide has a detrimental effect on leaves number increase and root length; while biological control against the pathogen by different actinomycetes isolates especially D5 and D8 is a more best to fight against diseases in bread wheat (HD) variety (Figure 5(a): A1, A2 & Figure 5(b): B1, B2). Production of antifungal substances [35] [36] and phytohormones [35]- [37] by actinomycetes isolates, can increase seed germination and controlling plant pathogenicity [38] [39]. Few or most of these factors attribute an advantage to treated plants.…”

Section: Discussionmentioning

confidence: 99%

Effects of Plant Growth Promoting Rhizobacteria (PGPR) on <i>In Vitro</i> Bread Wheat (<i>Triticum aestivum</i> L.) Growth Parameters and Biological Control Mechanisms

Benderradji¹,

Kellou²,

Ghadbane³

et al. 2016

AiM

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Three endemic plants rhizosphere (Astragalus gombo Coss. & Dur., Daucus sahariensis Murb., Ononis angustissima Lam.), were used for actinomycetes isolation. Ninety-three (93) isolates have been screened to evaluate their antagonistic properties against phytopathogenic microorganisms and to determine their biocontrol properties against Fusarium culmorum, especially responsible for several cereal diseases like font's seedlings, rust, and burn of ears. Four (04) isolates (D2, D5, D8, and AST1) have been in vitro tested to determine PGPR effect and biocontrol characters of bread wheat (Triticum aestivum L.), Hidhab (HD) variety cultivated in the Murashigue and Skoog (MS) culture medium. The aim of this study is the evaluation of antagonistic isolates of pathogenic fungi F. culmorum, without and within commercial fungicide (Tebuconazole, 60 g/l) solution. Our results showed clearly that these isolates have a significant effect on seed germination and seedling growth. However, results argue that these actinomycetes isolates show a very interesting activity compared to the commercial fungicide. As a result, these bacteria isolates can be used as biocontrol agents against Fusarium wilt disease of wheat, which have a beneficial effect on growth parameters.

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Suppression of Magnaporthe oryzae by culture filtrates of Streptomyces globisporus JK-1

Cited by 93 publications

References 29 publications

Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Evaluation of Streptomyces spp. against Fusarium oxysporum f. sp. ciceris for the management of chickpea wilt

Effects of Plant Growth Promoting Rhizobacteria (PGPR) on <i>In Vitro</i> Bread Wheat (<i>Triticum aestivum</i> L.) Growth Parameters and Biological Control Mechanisms

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Suppression of Magnaporthe oryzae by culture filtrates of Streptomyces globisporus JK-1

Cited by 93 publications

References 29 publications

Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Increased enzymatic activity in rice leaf blast suppression by crude extract of Epicoccum sp

Evaluation of Streptomyces spp. against Fusarium oxysporum f. sp. ciceris for the management of chickpea wilt

Effects of Plant Growth Promoting Rhizobacteria (PGPR) on &lt;i&gt;In Vitro&lt;/i&gt; Bread Wheat (&lt;i&gt;Triticum aestivum&lt;/i&gt; L.) Growth Parameters and Biological Control Mechanisms

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Effects of Plant Growth Promoting Rhizobacteria (PGPR) on <i>In Vitro</i> Bread Wheat (<i>Triticum aestivum</i> L.) Growth Parameters and Biological Control Mechanisms