scholarly journals Bacillus cereus AR156 triggers induced systemic resistance against Pseudomonas syringae pv. tomato DC3000 by suppressing miR472 and activating CNLs‐mediated basal immunity in Arabidopsis

2020 ◽  
Vol 21 (6) ◽  
pp. 854-870 ◽  
Author(s):  
Chunhao Jiang ◽  
Zhihang Fan ◽  
Zijie Li ◽  
Dongdong Niu ◽  
Yan Li ◽  
...  
Keyword(s):  
Bacillus Cereus ◽  
Pseudomonas Syringae ◽  
Induced Systemic Resistance ◽  
Systemic Resistance ◽  
Tomato Dc3000 ◽  
Basal Immunity

scholarly journals Induction of systemic resistance in tomato by the autochthonous phylloplane resident Bacillus cereus

2006 ◽  
Vol 41 (8) ◽  
pp. 1247-1252 ◽  
Author(s):  
Bernardo de Almeida Halfeld-Vieira ◽  
José Roberto Vieira Júnior ◽  
Reginaldo da Silva Romeiro ◽  
Harllen Sandro Alves Silva ◽  
Maria Cristina Baracat-Pereira
Keyword(s):  
Bacillus Cereus ◽  
Induced Resistance ◽  
Pseudomonas Syringae ◽  
Induced Systemic Resistance ◽  
Resistance Mechanism ◽  
Systemic Resistance ◽  
Tomato Plants

The objective of this work was to verify if the induced resistance mechanism is responsible for the capacity of a phylloplane resident bacteria (Bacillus cereus), isolated from healthy tomato plants, to control several diseases of this crop. A strain of Pseudomonas syringae pv. tomato was used as the challenging pathogen. The absence of direct antibiosis of the antagonist against the pathogen, the significant increase in peroxidases activity in tomato plants exposed to the antagonist and then inoculated with the challenging pathogen, as well as the character of the protection, are evidences wich suggest that biocontrol efficiency presented by the antagonist in previous works might be due to induced systemic resistance (ISR).

Dimethyl disulfide is an induced systemic resistance elicitor produced by Bacillus cereus C1L

2012 ◽  
Vol 68 (9) ◽  
pp. 1306-1310 ◽  
Author(s):  
Chien-Jui Huang ◽  
Jia-Fang Tsay ◽  
Shu-Yu Chang ◽  
Hsiu-Ping Yang ◽  
Wen-Shi Wu ◽  
...  
Keyword(s):  
Bacillus Cereus ◽  
Induced Systemic Resistance ◽  
Dimethyl Disulfide ◽  
Systemic Resistance

scholarly journals Bacillus cereus AR156 Activates Defense Responses to Pseudomonas syringae pv. tomato in Arabidopsis thaliana Similarly to flg22

2018 ◽  
Vol 31 (3) ◽  
pp. 311-322 ◽  
Author(s):  
Shune Wang ◽  
Ying Zheng ◽  
Chun Gu ◽  
Chan He ◽  
Mengying Yang ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Bacillus Cereus ◽  
Pseudomonas Syringae ◽  
Transcriptional Profiling ◽  
Quantitative Polymerase Chain Reaction ◽  
Polymerase Chain Reaction Analysis ◽  
Defense Responses ◽  
Systemic Resistance ◽  
Callose Deposition ◽  
Plant Growth Promoting

Bacillus cereus AR156 (AR156) is a plant growth–promoting rhizobacterium capable of inducing systemic resistance to Pseudomonas syringae pv. tomato in Arabidopsis thaliana. Here, we show that, when applied to Arabidopsis leaves, AR156 acted similarly to flg22, a typical pathogen-associated molecular pattern (PAMP), in initiating PAMP-triggered immunity (PTI). AR156-elicited PTI responses included phosphorylation of MPK3 and MPK6, induction of the expression of defense-related genes PR1, FRK1, WRKY22, and WRKY29, production of reactive oxygen species, and callose deposition. Pretreatment with AR156 still significantly reduced P. syringae pv. tomato multiplication and disease severity in NahG transgenic plants and mutants sid2-2, jar1, etr1, ein2, npr1, and fls2. This suggests that AR156-induced PTI responses require neither salicylic acid, jasmonic acid, and ethylene signaling nor flagella receptor kinase FLS2, the receptor of flg22. On the other hand, AR156 and flg22 acted in concert to differentially regulate a number of AGO1-bound microRNAs that function to mediate PTI. A full-genome transcriptional profiling analysis indicated that AR156 and flg22 activated similar transcriptional programs, coregulating the expression of 117 genes; their concerted regulation of 16 genes was confirmed by real-time quantitative polymerase chain reaction analysis. These results suggest that AR156 activates basal defense responses to P. syringae pv. tomato in Arabidopsis, similarly to flg22.

scholarly journals Transcript and metabolite analysis of the Trichoderma-induced systemic resistance response to Pseudomonas syringae in Arabidopsis thaliana

Microbiology ◽  
2012 ◽  
Vol 158 (1) ◽  
pp. 139-146 ◽  
Author(s):  
Yariv Brotman ◽  
Jan Lisec ◽  
Michaël Méret ◽  
Ilan Chet ◽  
Lothar Willmitzer ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Pseudomonas Syringae ◽  
Induced Systemic Resistance ◽  
Systemic Resistance ◽  
Metabolite Analysis ◽  
Resistance Response

scholarly journals Induced Systemic Resistance in Arabidopsis thaliana Against Pseudomonas syringae pv. tomato by 2,4-Diacetylphloroglucinol-Producing Pseudomonas fluorescens

2012 ◽  
Vol 102 (4) ◽  
pp. 403-412 ◽  
Author(s):  
David M. Weller ◽  
Dmitri V. Mavrodi ◽  
Johan A. van Pelt ◽  
Corné M. J. Pieterse ◽  
Leendert C. van Loon ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Pseudomonas Fluorescens ◽  
Induced Resistance ◽  
Pseudomonas Syringae ◽  
Induced Systemic Resistance ◽  
Signal Transduction Pathway ◽  
Systemic Resistance ◽  
Wild Type ◽  
Challenge Inoculation ◽  
Dependent Signal

Pseudomonas fluorescens strains that produce the polyketide antibiotic 2,4-diacetylphloroglucinol (2,4-DAPG) are among the most effective rhizobacteria that suppress root and crown rots, wilts, and damping-off diseases of a variety of crops, and they play a key role in the natural suppressiveness of some soils to certain soilborne pathogens. Root colonization by 2,4-DAPG-producing P. fluorescens strains Pf-5 (genotype A), Q2-87 (genotype B), Q8r1-96 (genotype D), and HT5-1 (genotype N) produced induced systemic resistance (ISR) in Arabidopsis thaliana accession Col-0 against bacterial speck caused by P. syringae pv. tomato. The ISR-eliciting activity of the four bacterial genotypes was similar, and all genotypes were equivalent in activity to the well-characterized strain P. fluorescens WCS417r. The 2,4-DAPG biosynthetic locus consists of the genes phlHGF and phlACBDE. phlD or phlBC mutants of Q2-87 (2,4-DAPG minus) were significantly reduced in ISR activity, and genetic complementation of the mutants restored ISR activity back to wild-type levels. A phlF regulatory mutant (overproducer of 2,4-DAPG) had ISR activity equivalent to the wild-type Q2-87. Introduction of DAPG into soil at concentrations of 10 to 250 μM 4 days before challenge inoculation induced resistance equivalent to or better than the bacteria. Strain Q2-87 induced resistance on transgenic NahG plants but not on npr1-1, jar1, and etr1 Arabidopsis mutants. These results indicate that the antibiotic 2,4-DAPG is a major determinant of ISR in 2,4-DAPG-producing P. fluorescens, that the genotype of the strain does not affect its ISR activity, and that the activity induced by these bacteria operates through the ethylene- and jasmonic acid-dependent signal transduction pathway.

scholarly journals The Plant Growth–Promoting Rhizobacterium Bacillus cereus AR156 Induces Systemic Resistance in Arabidopsis thaliana by Simultaneously Activating Salicylate- and Jasmonate/Ethylene-Dependent Signaling Pathways

2011 ◽  
Vol 24 (5) ◽  
pp. 533-542 ◽  
Author(s):  
Dong-Dong Niu ◽  
Hong-Xia Liu ◽  
Chun-Hao Jiang ◽  
Yun-Peng Wang ◽  
Qing-Ya Wang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Bacillus Cereus ◽  
Signaling Pathways ◽  
Pseudomonas Syringae ◽  
Defense Responses ◽  
Systemic Resistance ◽  
Dependent Manner ◽  
Challenge Inoculation ◽  
Plant Growth Promoting ◽  
Growth Promoting

Bacillus cereus AR156 is a plant growth–promoting rhizobacterium that induces resistance against a broad spectrum of pathogens including Pseudomonas syringae pv. tomato DC3000. This study analyzed AR156-induced systemic resistance (ISR) to DC3000 in Arabidopsis ecotype Col-0 plants. Compared with mock-treated plants, AR156-treated ones showed an increase in biomass and reductions in disease severity and pathogen density in the leaves. The defense-related genes PR1, PR2, PR5, and PDF1.2 were concurrently expressed in the leaves of AR156-treated plants, suggesting simultaneous activation of the salicylic acid (SA)- and the jasmonic acid (JA)- and ethylene (ET)-dependent signaling pathways by AR156. The above gene expression was faster and stronger in plants treated with AR156 and inoculated with DC3000 than that in plants only inoculated with DC3000. Moreover, the cellular defense responses hydrogen peroxide accumulation and callose deposition were induced upon challenge inoculation in the leaves of Col-0 plants primed by AR156. Also, pretreatment with AR156 led to a higher level of induced protection against DC3000 in Col-0 than that in the transgenic NahG, the mutant jar1 or etr1, but the protection was absent in the mutant npr1. Therefore, AR156 triggers ISR in Arabidopsis by simultaneously activating the SA- and JA/ET-signaling pathways in an NPR1-dependent manner that leads to an additive effect on the level of induced protection.

scholarly journals Bacillus cereus AR156 primes induced systemic resistance by suppressing miR825/825* and activating defense-related genes in Arabidopsis

2016 ◽  
Vol 58 (4) ◽  
pp. 426-439 ◽  
Author(s):  
Dongdong Niu ◽  
Jing Xia ◽  
Chunhao Jiang ◽  
Beibei Qi ◽  
Xiaoyu Ling ◽  
...  
Keyword(s):  
Bacillus Cereus ◽  
Induced Systemic Resistance ◽  
Systemic Resistance

scholarly journals Salicylic Acid Produced by Serratia marcescens 90-166 Is Not the Primary Determinant of Induced Systemic Resistance in Cucumber or Tobacco

1997 ◽  
Vol 10 (6) ◽  
pp. 761-768 ◽  
Author(s):  
C. M. Press ◽  
M. Wilson ◽  
S. Tuzun ◽  
J. W. Kloepper
Keyword(s):  
Salicylic Acid ◽  
Serratia Marcescens ◽  
Pseudomonas Syringae ◽  
Ferric Iron ◽  
Induced Systemic Resistance ◽  
Iron Concentration ◽  
Systemic Resistance ◽  
Broth Culture ◽  
In Planta

The rhizobacterial strain Serratia marcescens 90–66 mediates induced systemic resistance (ISR) to fungal, bacterial, and viral pathogens. It was determined that strain 90–166 produced salicylic acid (SA), using the salicylateresponsive reporter plasmid pUTK21. High-pressure liquid chromatography analysis of culture extracts confirmedthe production of SA in broth culture. Mini-Tn5phoA mutants, which did not produce detectable amounts of SA, retained ISR activity in cucumber against the fungal pathogen Colletotrichum orbiculare. Strain 90–166 induced disease resistance to Pseudomonas syringae pv. tabaci in wild-type Xanthi-nc and transgenic NahG-10 tobacco expressing salicylate hydroxylase. Increasing ferric iron concentrations in vitro reduced SA production below detectable limits, and increasing ferric iron concentration in planta, applied as a root drench, significantly reduced the level of ISR observed in cucumber to C. orbiculare. An ISR¯ mutant (90-166-2882) still produced SA. The results of this study indicate that SA produced by 90–166 is not the primary bacterial determinant of ISR and that this bacterial-mediated ISR system is affected by iron concentration.

scholarly journals Differential Induction of Systemic Resistance in Arabidopsis by Biocontrol Bacteria

1997 ◽  
Vol 10 (6) ◽  
pp. 716-724 ◽  
Author(s):  
Saskia C. M. Van Wees ◽  
Corné M. J. Pieterse ◽  
Annemiek Trijssenaar ◽  
Yvonne A. M. Van 't Westende ◽  
Femke Hartog ◽  
...  
Keyword(s):  
Pseudomonas Syringae ◽  
Molecular Mechanisms ◽  
Systemic Acquired Resistance ◽  
Induced Systemic Resistance ◽  
Acquired Resistance ◽  
Systemic Resistance ◽  
Biocontrol Bacteria ◽  
Pathogenesis Related ◽  
Pathogenesis Related Gene ◽  
Related Plant

Selected nonpathogenic, root-colonizing bacteria are able to elicit induced systemic resistance (ISR) in plants. To elucidate the molecular mechanisms underlying this type of systemic resistance, an Arabidopsis-based model system was developed in which Pseudomonas syringae pv. tomato and Fusarium oxysporum f. sp. raphani were used as challenging pathogens. In Arabidopsis thaliana ecotypes Columbia and Landsberg erecta, colonization of the rhizosphere by P. fluorescens strain WCS417r induced systemic resistance against both pathogens. In contrast, ecotype RLD did not respond to WCS417r treatment, whereas all three ecotypes expressed systemic acquired resistance upon treatment with salicylic acid (SA). P. fluorescens strain WCS374r, previously shown to induce ISR in radish, did not elicit ISR in Arabidopsis. The opposite was found for P. putida strain WCS358r, which induced ISR in Arabidopsis but not in radish. These results demonstrate that rhizosphere pseudomonads are differentially active in eliciting ISR in related plant species. The outer membrane lipopolysaccharide (LPS) of WCS417r is the main ISR-inducing determinant in radish and carnation, and LPS-containing cell walls also elicit ISR in Arabidopsis. However, mutant WCS417rOA¯, lacking the O-antigenic side chain of the LPS, induced levels of protection similar to those induced by wild-type WCS417r. This indicates that ISR-inducing bacteria produce more than a single factor that trigger ISR in Arabidopsis. Furthermore, WCS417r and WCS358r induced protection in both wildtype Arabidopsis and SA-nonaccumulating NahG plants without activating pathogenesis-related gene expression. This suggests that elicitation of an SA-independent signaling pathway is a characteristic feature of ISR-inducing biocontrol bacteria.

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