Siderophores of Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis

Wilson, Melissa K.; Abergel, Rebecca J.; Raymond, Kenneth N.; Arceneaux, J. E. L.; Byers, B. R.

doi:10.1016/j.bbrc.2006.07.055

Cited by 173 publications

(149 citation statements)

References 21 publications

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“…Fe-binding chelators, known as siderophores, bind or capture free Fe (III) and transport iron into the cell (Neilands and Nakamura 1991). Many different types of siderophores have been studied and identified in different bacterial genera including Bacillus (Park et al 2005;Temirov et al 2003;Wilson et al 2006). The relation between siderophore production, plant growth promotion, and uptake of Fe has also been well documented for a variety of plants and microorganisms.…”

Section: Plant Growth Promotion Resulting From Better Nutrient Uptakementioning

confidence: 99%

Agricultural uses of plant biostimulants

2014

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Background Plant biostimulants are diverse substances and microorganisms used to enhance plant growth. The global market for biostimulants is projected to increase 12 % per year and reach over $2,200 million by 2018. Despite the growing use of biostimulants in agriculture, many in the scientific community consider biostimulants to be lacking peer-reviewed scientific evaluation. Scope This article describes the emerging definitions of biostimulants and reviews the literature on five categories of biostimulants: i. microbial inoculants, ii. humic acids, iii. fulvic acids, iv. protein hydrolysates and amino acids, and v. seaweed extracts.Conclusions The large number of publications cited for each category of biostimulants demonstrates that there is growing scientific evidence supporting the use of biostimulants as agricultural inputs on diverse plant species. The cited literature also reveals some commonalities in plant responses to different biostimulants, such as increased root growth, enhanced nutrient uptake, and stress tolerance.

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Section: Plant Growth Promotion Resulting From Better Nutrient Uptakementioning

confidence: 99%

Agricultural uses of plant biostimulants

2014

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“…Bacillus anthracis, the causative agent of anthrax and a known bioterrorism agent, is capable of synthesizing two siderophores, bacillibactin and petrobactin (3,4). Bacillibactin, a catechol-containing trilactone, is generated by a non-ribosomal peptide synthetase pathway encoded by the dhb operon (5); however, this metabolite is dispensable during pathogenesis and likely not secreted during an anthrax infection (6 -9).…”

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confidence: 99%

“…Conversely, a second siderophore, petrobactin (Fig. 1A), is essential for virulence within current infection models (6,10) and has since become a focus of multiple microbiological, genetic, and biochemical studies (3,(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)20). This mixed catechol-carboxylate siderophore was first isolated from the Gram-negative marine microbe Marinobacter hydrocarbonoclasticus (21).…”

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confidence: 99%

Functional and Structural Analysis of the Siderophore Synthetase AsbB through Reconstitution of the Petrobactin Biosynthetic Pathway from Bacillus anthracis

Nusca

Kim

Maltseva

et al. 2012

Journal of Biological Chemistry

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Background: asbABCDEF mediates petrobactin production and facilitates anthrax virulence. Results: Purified AsbA-E proteins reconstituted petrobactin assembly in vitro. The crystal structure and enzymatic studies of AsbB highlight its function and role in the siderophore pathway. Conclusion: AsbB characterization demonstrated reaction flexibility and substrate positions in the binding pocket. Significance: Siderophore synthetases represent promising antimicrobial targets, and characterization of these versatile enzymes enables creation of novel compounds.

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“…1) (13)(14)(15). PB is a crucial virulence component of B. anthracis that enables the bacteria to establish infection in mice and supports development in macrophages (16).…”

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confidence: 99%

Characterization of a Bacillus subtilis transporter for petrobactin, an anthrax stealth siderophore

Zawadzka

Kim

Maltseva

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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Iron deprivation activates the expression of components of the siderophore-mediated iron acquisition systems in Bacillus subtilis, including not only the synthesis and uptake of its siderophore bacillibactin but also expression of multiple ABC transporters for iron scavenging using xenosiderophores. The yclNOPQ operon is shown to encode the complete transporter for petrobactin (PB), a photoreactive 3,4-catecholate siderophore produced by many members of the B.

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Siderophores of Bacillus anthracis, Bacillus cereus, and Bacillus thuringiensis

Cited by 173 publications

References 21 publications

Agricultural uses of plant biostimulants

Agricultural uses of plant biostimulants

Functional and Structural Analysis of the Siderophore Synthetase AsbB through Reconstitution of the Petrobactin Biosynthetic Pathway from Bacillus anthracis

Characterization of a Bacillus subtilis transporter for petrobactin, an anthrax stealth siderophore

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