Antagonistic bacterium <i>Bacillus amyloliquefaciens</i>
 induces resistance and controls the bacterial wilt of tomato

Tan, Shiyong; Dong, Yue; Liao, Hanpeng; Huang, Jianfeng; Song, Song; Xu, Yangchun; Shen, Qirong

doi:10.1002/ps.3491

Cited by 62 publications

(43 citation statements)

References 47 publications

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“…6), demonstrating that the BCA was able to activate plant basal defense responses, thereby attenuating the Phytophthora infection. These results are similar with studies on the strains of B. cereus against DC3000 in Arabidopsis ( Niu et al 2011) and B. amyloliquefaciens against Ralstonia solanacearum in tomato (Tan et al 2013).…”

Section: Discussionsupporting

confidence: 89%

Isolation and characterization of Bacillus altitudinis JSCX-1 as a new potential biocontrol agent against Phytophthora sojae in soybean [Glycine max (L.) Merr.]

Zhou

Chen

et al. 2017

Plant Soil

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Aims Phytophthora root and stem rot caused by the oomycete plant pathogen Phytophthora sojae (Kaufmann & Gerdemann), is a destructive disease of soybean [Glycine max (L.) Merr.]. There is no straightforward available method to control this disease. The present study aimed to isolate a biocontrol agent (BCA) to control Phytophthora rot and gain insights into the mechanisms of biocontrol activity. Methods Antagonistic bacteria screening, inoculation assays, histochemical and fluorometric staining and real-time polymerase chain reaction (RT-PCR) were used to achieve the goals of the present study.Results The results indicated that the isolated BCA strain JSCX-1 was characterized as Bacillus altitudinis. Further studies showed that JSCX-1 bacterial filtrate inhibited the mycelial growth and zoospore germination of P. sojae. Greenhouse experiments showed that biocontrol efficiency of JSCX-1 against P. sojae was 49.28 ± 3.42%. Our results revealed that JSCX-1 increased the reactive oxygen species (ROS) production and callose deposition of soybean leaves. Moreover, JSCX-1 upregulated the transcriptional level of the G. max PR1a gene but not that of the LOX and ERF genes. Conclusions B. altitudinis JSCX-1 can effectively reduce the infectivity of P. sojae via increasing the ROS production and callose deposition on soybean, and up-regulating the expression of salicylate-responsive gene GmPR1a.

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Section: Discussionsupporting

confidence: 89%

Isolation and characterization of Bacillus altitudinis JSCX-1 as a new potential biocontrol agent against Phytophthora sojae in soybean [Glycine max (L.) Merr.]

Zhou

Chen

et al. 2017

Plant Soil

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“…30220; Agricultural Culture Collection of China) was used as the pathogen and was obtained from the Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences (Beijing, China). The pathogenic Ralstonia solanacearum strain QLRs-1115 was previously isolated from a wilted tomato plant (15).…”

Section: Methodsmentioning

confidence: 99%

Enhanced Control of Cucumber Wilt Disease by Bacillus amyloliquefaciens SQR9 by Altering the Regulation of Its DegU Phosphorylation

Zhang

Wang

et al. 2014

Appl Environ Microbiol

Self Cite

108

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Bacillus amyloliquefaciens strain SQR9, isolated from the cucumber rhizosphere, suppresses the growth of Fusarium oxysporum in the cucumber rhizosphere and protects the host plant from pathogen invasion through efficient root colonization. In the Gram-positive bacterium Bacillus, the response regulator DegU regulates genetic competence, swarming motility, biofilm formation, complex colony architecture, and protease production. In this study, we report that stepwise phosphorylation of DegU in B. amyloliquefaciens SQR9 can influence biocontrol activity by coordinating multicellular behavior and regulating the synthesis of antibiotics. Results from in vitro and in situ experiments and quantitative PCR (qPCR) studies demonstrate the following: (i) that the lowest level of phosphorylated DegU (DegUϳP) (the degQ mutation) impairs complex colony architecture, biofilm formation, colonization activities, and biocontrol efficiency of Fusarium wilt disease but increases the production of macrolactin and bacillaene, and (ii) that increasing the level of DegUϳP by degQ and degSU overexpression significantly improves complex colony architecture, biofilm formation, colonization activities, production of the antibiotics bacillomycin D and difficidin, and efficiency of biocontrol of Fusarium wilt disease. The results offer a new strategy to enhance the biocontrol efficacy of Bacillus amyloliquefaciens SQR9.

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“…In addition to antagonism, some Bacillus species induce plant defence response mechanisms (Tan et al . ). The defence response enables plants to physiologically ‘resist’ infection, thereby protecting plant cells from phytopathogenic challengers and suppressing phytopathogen infection in plants.…”

Section: Introductionmentioning

confidence: 97%

Are cyclic lipopeptides produced by Bacillus amyloliquefaciens S13-3 responsible for the plant defence response in strawberry against Colletotrichum gloeosporioides ?

Yamamoto¹,

Shiraishi

Suzuki

2015

Lett Appl Microbiol

100

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Antagonistic bacterium Bacillus amyloliquefaciens induces resistance and controls the bacterial wilt of tomato

Cited by 62 publications

References 47 publications

Isolation and characterization of Bacillus altitudinis JSCX-1 as a new potential biocontrol agent against Phytophthora sojae in soybean [Glycine max (L.) Merr.]

Isolation and characterization of Bacillus altitudinis JSCX-1 as a new potential biocontrol agent against Phytophthora sojae in soybean [Glycine max (L.) Merr.]

Enhanced Control of Cucumber Wilt Disease by Bacillus amyloliquefaciens SQR9 by Altering the Regulation of Its DegU Phosphorylation

Are cyclic lipopeptides produced by Bacillus amyloliquefaciens S13-3 responsible for the plant defence response in strawberry against Colletotrichum gloeosporioides ?

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