Draft Genome Sequence of Bradyrhizobium elkanii Strain SEMIA 938, Used in Commercial Inoculants for
            <i>Lupinus</i>
            spp. in Brazil

Hungría, Mariangela; Delamuta, Jakeline Renata Marçon; Ribeiro, Renan Augusto; Nogueira, Marco Antônio

doi:10.1128/mra.00546-19

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…Other notable but less abundant CR soil isolates included Enterococcus gallinarum , which is associated with nosocomial‐ and community‐acquired bacteremia and other infections (Narciso‐Schiavon et al, 2015; Quinones, Goni, Rubio, Duran, & Gomez‐Lus, 2005; Reid, Cockerill, & Patel, 2001; Schouten, Voss, & Hoogkamp‐Korstanje, 1999); Enterococcus durans , an infrequent human pathogen mostly associated with diarrhea in piglets and calves (Cheon & Chae, 1996; Quinones et al, 2005; Rogers, Zeman, & Erickson, 1992; Schouten et al, 1999); Achromobacter marplatensis, a soil microbe that has also been found in cystic fibrosis patients (Gomila et al, 2011; Papalia et al, 2019); Bradyrhizobium elkanii, a soil bacterium and legume symbiont used commercially as an inoculant to improve the growth of legume plants (Crovadore et al, 2016; Faruque et al, 2015; Hungria, Delamuta, Ribeiro, & Nogueira, 2019); and Planomicrobium glaciei , an infrequently isolated bacterium, first found in a glacier and later in food (Tshipamba, Lubanza, Adetunji, & Mwanza, 2018; Zhang et al, 2009). Finding these isolates is significant for several reasons.…”

Section: Discussionmentioning

confidence: 99%

“…Members of this genus are usually found in soil or water environments and occasionally as opportunistic pathogens (Coenye et al, 1999;Coenye, Goris, Spilker, Vandamme, & LiPuma, 2002;Harmon et al, 2019;Henriques et al, 2012;Hrenovic et al, 2019;Karafin et al, 2010;Kobayashi et al, 2016;Wang et al, 2015). 1992;Schouten et al, 1999); Achromobacter marplatensis, a soil microbe that has also been found in cystic fibrosis patients (Gomila et al, 2011;Papalia et al, 2019); Bradyrhizobium elkanii, a soil bacterium and legume symbiont used commercially as an inoculant to improve the growth of legume plants (Crovadore et al, 2016;Faruque et al, 2015;Hungria, Delamuta, Ribeiro, & Nogueira, 2019); and Planomicrobium glaciei, an infrequently isolated bacterium, first found in a glacier and later in food (Tshipamba, Lubanza, Adetunji, & Mwanza, 2018;Zhang et al, 2009). Finding these isolates is significant for several reasons.…”

Section: Discussionmentioning

confidence: 99%

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Urban and agricultural soils in Southern California are a reservoir of carbapenem‐resistant bacteria

et al. 2020

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Carbapenems are last‐resort β‐lactam antibiotics used in healthcare facilities to treat multidrug‐resistant infections. Thus, most studies on identifying and characterizing carbapenem‐resistant bacteria (CRB) have focused on clinical settings. Relatively, little is still known about the distribution and characteristics of CRBs in the environment, and the role of soil as a potential reservoir of CRB in the United States remains unknown. Here, we have surveyed 11 soil samples from 9 different urban or agricultural locations in the Los Angeles–Southern California area to determine the prevalence and characteristics of CRB in these soils. All samples tested contained CRB with a frequency of <10 to 1.3 × 104 cfu per gram of soil, with most agricultural soil samples having a much higher relative frequency of CRB than urban soil samples. Identification and characterization of 40 CRB from these soil samples revealed that most of them were members of the genera Cupriavidus, Pseudomonas, and Stenotrophomonas. Other less prevalent genera identified among our isolated CRB, especially from agricultural soils, included the genera Enterococcus, Bradyrhizobium, Achromobacter, and Planomicrobium. Interestingly, all of these carbapenem‐resistant isolates were also intermediate or resistant to at least 1 noncarbapenem antibiotic. Further characterization of our isolated CRB revealed that 11 Stenotrophomonas, 3 Pseudomonas, 1 Enterococcus, and 1 Bradyrhizobium isolates were carbapenemase producers. Our findings show for the first time that both urban and agricultural soils in Southern California are an underappreciated reservoir of bacteria resistant to carbapenems and other antibiotics, including carbapenemase‐producing CRB.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Urban and agricultural soils in Southern California are a reservoir of carbapenem‐resistant bacteria

et al. 2020

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Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by Legumes

et al. 2021

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At present, there are numerous examples in which symbiotic nitrogen fixation by rhizobia can totally replace the use of nitrogen fertilizers in legume crops. Over the years, there has been a great effort by research institutions to develop and select rhizobial inoculants adapted for these crops. The symbiotic process is highly dependent on the dynamic exchange of signals and molecular nutrients between partners. Our focus in this review was to discuss the two key determinants in successful symbiotic interactions of rhizobia to nodulate pulses. One of them is the production of exopolysaccharides (EPS) and the other the presence of the type VI secretion system (T6SS). EPS are extracellular polymers weakly associated with the bacterial surface and are abundantly released into acid soils facilitating, among other functions, an adaptation of rhizobia to this environment. On the other hand, different protein secretion systems, involved in symbiosis, have been described in rhizobia. This is not the case with the T6SS. The current availability of various rhizobial genomes offers the possibility of discussing its role in symbiosis. The study of these determinants will be of great utility for the selection of effective inoculants for legumes, a promising way to improve nitrogen acquisition by legumes.

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Draft Genome Sequence of Bradyrhizobium elkanii Strain SEMIA 938, Used in Commercial Inoculants for Lupinus spp. in Brazil

Cited by 2 publications

References 12 publications

Urban and agricultural soils in Southern California are a reservoir of carbapenem‐resistant bacteria

Urban and agricultural soils in Southern California are a reservoir of carbapenem‐resistant bacteria

Rhizobial Exopolysaccharides and Type VI Secretion Systems: A Promising Way to Improve Nitrogen Acquisition by Legumes

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