Bacillus-Based Biological Control of Plant Diseases

Cawoy, Hélène; Bettiol, W.; Fickers, Patrick; Ongena, Marc

doi:10.5772/17184

Cited by 150 publications

(107 citation statements)

References 131 publications

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“…The production of the phytohormone (IAA) and siderophores by Bacillus species has been investigated in many studies. The IAA stimulates the plant growth and siderophores chelate iron (Fe) and deprive the phytopathogenic fungi of it [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Here, the Bacillus spp.…”

Section: Resultsmentioning

confidence: 99%

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Biocontrol and Plant Growth Promotion Characterization of Bacillus Species Isolated from Calendula officinalis Rhizosphere

et al. 2013

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The phenotypic and genotypic diversity of the plant growth promoting Bacillus genus have been widely investigated in the rhizosphere of various agricultural crops. However, to our knowledge this is the first report on the Bacillus species isolated from the rhizosphere of Calendula officinalis. 15 % of the isolated bacteria were screened for their important antifungal activity against Fusarium oxysporum, Botrytis cinerea, Aspergillus niger, Cladosporium cucumerinium and Alternaria alternata. The bacteria identification based on 16S r-RNA and gyrase-A genes analysis, revealed strains closely related to Bacillus amyloliquefaciens, B. velezensis, B. subtilis sub sp spizezenii and Paenibacillus polymyxa species. The electro-spray mass spectrometry coupled to liquid chromatography (ESI-LC MS) analysis showed that most of the Bacillus isolates produced the three lipopeptides families. However, the P. polymyxa (18SRTS) didn't produce any type of lipopeptides. All the tested Bacillus isolates produced cellulase but the protease activity was observed only in the B. amyloliquefaciens species (9SRTS). The Salkowsky colorimetric test showed that the screened bacteria synthesized 6-52 lg/ml of indole 3 acetic acid. These bacteria produced siderophores with more than 10 mm wide orange zones on chromazurol S. The greenhouse experiment using a naturally infested soil with Sclerotonia sclerotiorum showed that the B. amyloliquefaciens (9SRTS) had no significant (P [ 0.05) effect on the pre-germination of the chickpea seeds. However, it increased the size of the chickpea plants and reduced the stem rot disease (P \ 0.05).These results suggested that the Bacillus strains isolated in this work may be further used as bioinoculants to improve the production of C. officinalis and other crop systems.

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Section: Resultsmentioning

confidence: 99%

“…The well studied and applied organisms are members of Bacillus subtilis spp. group [3,7]. Such organisms have almost identical 16S rDNA sequences (99.2-99.6 % sequence similarity).…”

Section: Introductionmentioning

confidence: 99%

Biocontrol and Plant Growth Promotion Characterization of Bacillus Species Isolated from Calendula officinalis Rhizosphere

et al. 2013

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“…Major insect families, which can be controlled by Cry/Cyt toxins include Coleoptera, Lepidoptera, and Diptera. A wide range of plant diseases (root rot, leaf spot, anthracnose, gray mold, early blight, late blight, powdery mildew, downy mildew, and bacterial spot) can also be controlled successfully by the antagonistic Bacillus isolates [99]. …”

Section: Marine Bacillus Strains As Potential Biocontrol Agentsmentioning

confidence: 99%

Diversity of Secondary Metabolites from Marine Bacillus Species: Chemistry and Biological Activity

Mondol

Shin

Islam³

2013

Marine Drugs

211

132

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Marine Bacillus species produce versatile secondary metabolites including lipopeptides, polypeptides, macrolactones, fatty acids, polyketides, and isocoumarins. These structurally diverse compounds exhibit a wide range of biological activities, such as antimicrobial, anticancer, and antialgal activities. Some marine Bacillus strains can detoxify heavy metals through reduction processes and have the ability to produce carotenoids. The present article reviews the chemistry and biological activities of secondary metabolites from marine isolates. Side by side, the potential for application of these novel natural products from marine Bacillus strains as drugs, pesticides, carotenoids, and tools for the bioremediation of heavy metal toxicity are also discussed.

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“…Some strains of the Bacillus amyloliquefaciens species have been described as beneficial rhizobacteria, because of their ability to promote growth and/or protect plants from infection by multiple pathogens (Lugtenberg and Kamilova, 2009; Cawoy et al, 2011; Kumar et al, 2011). This protective effect against disease is achieved through multiple mechanisms, of which competition for space/nutrients, direct antibiosis against pathogens, and induction of systemic resistance (ISR) in the host plant are the most relevant (Nihorimbere et al, 2011; Bakker et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Key Impact of an Uncommon Plasmid on Bacillus amyloliquefaciens subsp. plantarum S499 Developmental Traits and Lipopeptide Production

et al. 2017

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The rhizobacterium Bacillus amyloliquefaciens subsp. plantarum S499 (S499) is particularly efficient in terms of the production of cyclic lipopeptides, which are responsible for the high level of plant disease protection provided by this strain. Sequencing of the S499 genome has highlighted genetic differences and similarities with the closely related rhizobacterium B. amyloliquefaciens subsp. plantarum FZB42 (FZB42). More specifically, a rare 8008 bp plasmid (pS499) harboring a rap-phr cassette constitutes a major distinctive element between S499 and FZB42. By curing this plasmid, we demonstrated that its presence is crucial for preserving the typical physiology of S499 cells. Indeed, the growth rate and extracellular proteolytic activity were significantly affected in the cured strain (S499 P−). Furthermore, pS499 made a significant contribution to the regulation of cyclic lipopeptide production. Surfactins and fengycins were produced in higher quantities by S499 P−, whereas lower amounts of iturins were detected. In line with the increase in surfactin release, bacterial motility improved after curing, whereas the ability to form biofilm was reduced in vitro. The antagonistic effect against phytopathogenic fungi was also limited for S499 P−, most probably due to the reduction of iturin production. With the exception of this last aspect, S499 P− behavior fell between that of S499 and FZB42, suggesting a role for the plasmid in shaping some of the phenotypic differences observed in the two strains.

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Bacillus-Based Biological Control of Plant Diseases

Cited by 150 publications

References 131 publications

Biocontrol and Plant Growth Promotion Characterization of Bacillus Species Isolated from Calendula officinalis Rhizosphere

Biocontrol and Plant Growth Promotion Characterization of Bacillus Species Isolated from Calendula officinalis Rhizosphere

Diversity of Secondary Metabolites from Marine Bacillus Species: Chemistry and Biological Activity

Key Impact of an Uncommon Plasmid on Bacillus amyloliquefaciens subsp. plantarum S499 Developmental Traits and Lipopeptide Production

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