Screening for the identification of potential biological control agents that induce systemic acquired resistance in sugar beet

Bargabus, Rebecca Lynn; Zidack, Nina K.; Sherwood, John E.; Jacobsen, Barry J.

doi:10.1016/j.biocontrol.2003.11.005

Cited by 102 publications

(43 citation statements)

References 38 publications

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“…The capability of the Bacillus mycoides BmJ isolate, in the control of Cercospora beticola leaf spot disease on sugarbeet is through systemic acquired resistance, in which induction of pathogenesis related proteins and biphasic hydrogen peroxide production play a key role (Bargabus et al 2002(Bargabus et al , 2004. The same condition has been seen in sugarbeet treatments with 203-6 and 203-7 isolates of Bacillus pumilus which led to a decrease in Cercospora leaf spot disease on sugarbeet (Bargabus et al 2004). Collins and Jakobsen (2003) were able to control Cercospora leaf spot disease of sugarbeet using B. subtilis isolate BacB.…”

Section: Discussionmentioning

confidence: 88%

“…It has been shown, that several species of the genus Bacillus act as a biological inducer of host resistance against various groups of plant pathogenic fungi, bacteria, and viruses Bargabus et al 2002Bargabus et al , 2004. The capability of the Bacillus mycoides BmJ isolate, in the control of Cercospora beticola leaf spot disease on sugarbeet is through systemic acquired resistance, in which induction of pathogenesis related proteins and biphasic hydrogen peroxide production play a key role (Bargabus et al 2002(Bargabus et al , 2004. The same condition has been seen in sugarbeet treatments with 203-6 and 203-7 isolates of Bacillus pumilus which led to a decrease in Cercospora leaf spot disease on sugarbeet (Bargabus et al 2004).…”

Section: Discussionmentioning

confidence: 99%

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Inhibitory effects of antagonistic bacteria inhabiting the rhizosphere of the sugarbeet plants, on Cercospora beticola Sacc., the causal agent of Cercospora leaf spot disease on sugarbeet

Arzanlou¹,

Mousavi²,

Bakhshi³

et al. 2016

Journal of Plant Protection Research

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Abstract:In the present study, the antagonistic capability of bacterial agents inhabiting the rhizosphere of sugarbeet plants were evaluated against Cercospora beticola Sacc. under laboratory and greenhouse conditions. After preliminary screening using the dual culture method, 14 strains with higher antagonistic capability were selected for further inhibitory assays against C. beticola. Bacterial strains were identified based on the sequence data of the small subunit-rDNA (SSU-rDNA) gene. Based on the SSU sequence data, the identity of bacterial strains were determined as Bacillus (10 strains: RB1, RB2, RB3, RB4, RB5, RB6, RB7, RB8, RB9, RB10), Paenibacillus (two strains: RP1, RP2), Enterobacter (one strain: RE), and Pseudomonas (one strain: RPs). The results obtained in this study showed that in all of the assays (dual culture, volatile and non-volatile metabolites) bacterial antagonists significantly inhibited the growth of C. beticola compared to the control. Bacillus (RB2) showed the highest inhibition rate on C. beticola in all of the assays. Based on the results of the laboratory assays, three bacterial strains RB2 (Bacillus), RPs (Pseudomonas), and RE (Paenibacillus) were selected for greenhouse assays. The experiment was designed based on a completely randomised design (CRD) with the application of antagonists prior to, simultaneously, and after inoculation with C. beticola on sugarbeet leaves. The reduction in disease severity was evaluated seven days after inoculation. The results of greenhouse assays were consistent with the results of laboratory studies. The obtained results showed that bacterial antagonists significantly reduced the disease severity when compared to the control.

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Section: Discussionmentioning

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Inhibitory effects of antagonistic bacteria inhabiting the rhizosphere of the sugarbeet plants, on Cercospora beticola Sacc., the causal agent of Cercospora leaf spot disease on sugarbeet

Arzanlou¹,

Mousavi²,

Bakhshi³

et al. 2016

Journal of Plant Protection Research

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“…2 Three infested plots with the causal pathogen were infested with the bioagent B.subtilis ( 1x10 6 cfu/ L water) at the rate of one 2 L / plot.…”

Section: Effect Of Combination Among Compost the Two Bioagents Bsubmentioning

confidence: 99%

Effect of Combination among Bioagents, Compost and Soil Solarization on Management of Strawberry Fusarium Wilt

Abada¹

2014

AJLS

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Sterilized aqueous filtrate of the tested compost resulted in significant reduction to the linear growth of the tested fungus compared with control treatment. This reduction was gradually increased by increasing it‫׳‬s concentration. The combination among the bioagents B.subtilis and P.flurescens, compost and soil solarization resulted in significant reduction to strawberry Fusarium wilt with significant increase to the produced fruits and their total soluble solids (T.S.S.) , either each of them was used alone or in their different combinations, compared with control treatment (infested with the causal fungus).On the other hand, compost was the most efficient in this regard compared with the other three items of disease management, i.e. soil solarization and the bioagents B.subtilis and P.flurescens when each of them was used alone. Moreover, no apparent infection was detected when the bioagents B.subtilis and P.flurescens ,compost and soil solarization were used together and produced fruit yield of T.S.S., to somewhat, similar to control treatment ( uninfested soil with the causal fungus).

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“…Research concluded that Bacillus mycoides isolate BacJ (Bargabus et al, 2002) and Bacillus pumilis isolate 203-7 (Bargabus et al, 2004) suppressed Cercospora isolates BT8, and BP24 has successfully been used to experimentally manage diseases on several crop species including tomato, potato and pecan.…”

Section: Campestrismentioning

confidence: 99%

Characterization of effective bio-control agent Bacillus sp. SRB 27 with high salt tolerance and thermostability isolated from forest soil sample

A¹,

Pindi²,

Shankar³

2014

Afr. J. Biotechnol.

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A potential antagonist Bacillus sp. SRB 27, against Fusarium oxysporum, Rhizoctonia solani and Alternaria solani was obtained from forest soil sample by carrying out in vitro and in vivo screening techniques. This study reports the identification and characterization of a Bacillus sp. SRB 27 that may be used as a bio-control agent against the plant diseases in crop plants. It was identified as Bacillus sp. SRB 27 based on 16S rDNA sequence analysis and biochemical tests. The isolate showed a wide range of antifungal activity in vitro against a number of phytopathogens such as F. oxysporum, Alternaria and Rhizoctonia in terms of percentage of growth inhibition which were 76.78, 78.57 and 77.55%, respectively. Strain SRB 27 was tolerant to high salt concentration up to 13%, was phosphate solubilizer, proteolytic and amylase positive and coagulase negative. It had compatibility with broad spectrum of fungicides with field recommended dose. Apart from the antagonistic activities, it showed a positive effect on the growth of the castor and cotton plants (both under seed and soil treatments) in comparison with control (non-inoculated). The growth parameters of the test plant surpassed the control in all the cases.

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Screening for the identification of potential biological control agents that induce systemic acquired resistance in sugar beet

Cited by 102 publications

References 38 publications

Inhibitory effects of antagonistic bacteria inhabiting the rhizosphere of the sugarbeet plants, on Cercospora beticola Sacc., the causal agent of Cercospora leaf spot disease on sugarbeet

Inhibitory effects of antagonistic bacteria inhabiting the rhizosphere of the sugarbeet plants, on Cercospora beticola Sacc., the causal agent of Cercospora leaf spot disease on sugarbeet

Effect of Combination among Bioagents, Compost and Soil Solarization on Management of Strawberry Fusarium Wilt

Characterization of effective bio-control agent Bacillus sp. SRB 27 with high salt tolerance and thermostability isolated from forest soil sample

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