Draft Genome Sequences of Seven
            <i>Chryseobacterium</i>
            Type Strains

Matu, Andisiwe; Nde, Adeline Lum; Oosthuizen, Lize; Hitzeroth, Arina; Badenhorst, Moira; Duba, Lebogang; Gidaga, Mphumzi; Klinck, Johan; Kriek, Ina-Maré; Lekoma, Palesa June; Nel, Lynette; Ramos, Sergio; Rossouw, Jacques E.; Salomane, Nicolaas; Segone, Neo; Serobe, Shiela; Tiyani, Tarsisius; Hugo, Celia J.; Newman, Jeffrey D.

doi:10.1128/mra.01518-18

Cited by 10 publications

(8 citation statements)

References 21 publications

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“…Species of the Chryseobacterium are aerobic and producing flexirubin pigments, which give the colonies a light yellow or yellowish-orange color. They can be isolated from various habitats and involved in remediation processes [ 47 ]. Pseudomonas spp.…”

Section: Resultsmentioning

confidence: 99%

Assessment of Chlorella sorokiniana Growth in Anaerobic Digester Effluent

Ziganshina

Bulynina

Ziganshin

2021

Plants

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Microalgae are considered a potential source of valuable compounds for multiple purposes and are potential agents for bioremediation of aquatic environments contaminated with different pollutants. This work evaluates the use of agricultural waste, unsterilized and anaerobically digested, to produce biomass from a strain of Chlorella sorokiniana. Furthermore, the presence of bacteria in these wastes was investigated based on the bacterial 16S rRNA gene sequencing. The results showed a specific growth rate ranging between 0.82 and 1.45 day–1, while the final biomass yield in different digestate-containing treatments (bacterial-contaminated cultures) ranged between 0.33 and 0.50 g L−1 day−1. Besides, substantial amounts of ammonium, phosphate, and sulfate were consumed by C. sorokiniana during the experimental period. The predominant bacteria that grew in the presence of C. sorokiniana in the effluent-containing treatments belonged to the genera Chryseobacterium, Flavobacterium, Sphingomonas, Brevundimonas, Hydrogenophaga, Sphingobacterium, and Pseudomonas. Therefore, this microalga can tolerate and grow in the presence of other microorganisms. Finally, these results show that anaerobically digested agricultural waste materials are a good substitute for growth media for green microalgae; however, phosphate and sulfate levels must also be controlled in the media to maintain adequate growth of microalgae.

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Section: Resultsmentioning

confidence: 99%

Assessment of Chlorella sorokiniana Growth in Anaerobic Digester Effluent

Ziganshina

Bulynina

Ziganshin

2021

Plants

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“…A recent comparative study characterized genomes of seven Chryseobacterium spp. from environmental and animal-associated samples demonstrates more diversity in the genomes of congeners ( Matu et al, 2019 ). Genomes of the Cryseobacterium isolates in the comparative study range from 3.7–5.2 Mb and 33.6%–37.1% GC, but no gene annotation or prediction effort was performed ( Matu et al, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

In vitro assays reveal inherently insecticide-tolerant termite symbionts

2023

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Introduction: Termite symbionts are well known for conferring a myriad of benefits to their hosts. Bacterial symbionts are repeatedly associated with increased fitness, nutritional supplementation, pathogen protection, and proper development across insect taxa. In addition, several recent studies link bacterial symbionts to reduced insecticide efficacy. This has important implications both in pest control management and environmental bioremediation efforts. Insects’ guts may be a valuable resource for microbes with broad application given their unique niches and metabolic diversity. Though insecticide resistance in termites is considered unlikely due to their life history, the close association of termites with a multitude of bacteria raises the question: is there potential for symbiont-mediated pesticide tolerance in termites?Methods and results: We identified a candidate that could grow in minimal medium containing formulated pesticide. This bacterial isolate was then subjected to continuous culture and subsequently demonstrated improved performance in the presence of pesticide. Isolates subjected to continuous culture were then grown at a range of concentrations from 1–10X the formulation rate. After constant exposure for several generations, isolates grew significantly better.Conclusion: Here we demonstrate that naïve insect hosts can harbor symbionts with inherent insecticide tolerance capable of rapid adaptation to increasing insecticide concentrations overtime. This has broad implications for both pest control and environmental cleanup of residual pesticides.

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“…Members of Chryseobacterium (in Bacteroidetes) have so far been found in various environments, i.e. freshwater (Strahan et al 2011), soil (Li and Zhu 2012), rhizosphere (Cho et al 2010), phyllosphere (Behrendt et al 2007), sludge (Pires et al 2010), sh (Zamora et al 2012a, b, c), midgut of insects (Kämpfer et al 2010b), raw dairy products (Hantsis-Zacharov et al 2008), raw chicken (de Beer et al 2005), faeces of millipede (Kämpfer et al 2010a), industrial plants (Herzog et al 2008) and clinical samples (Holmes et al 1984;Matu et al 2019). Chryseobacterium is also an important genus associated with plants ( Lee et al 2006;Anderson and Habiger 2012;Brown et al 2012) including poplar.…”

Section: Discussionmentioning

confidence: 99%

Bacteria associated with vascular wilt of poplar

Kwaśna

Szewczyk

Baranowska

et al. 2021

Preprint

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In 2017, the 560-ha area of hybrid poplar plantation in northern Poland showed symptoms of tree decline. Leaves appeared smaller, turned yellow-brown, and were shed prematurely. Twigs and smaller branches died. Bark was sunken and discolored, often loosened and split. Trunks decayed from the base. Phloem and xylem showed brown necrosis. Ten per cent of trees died in 1–2 months. None of these symptoms was typical for known poplar diseases. Bacteria in soil and the necrotic base of poplar trunk were analysed with Illumina sequencing. Soil and wood were colonized by at least 615 and 249 taxa. The majority of bacteria were common to soil and wood. The most common taxa in soil were: Acidobacteria (14.757%), Actinobacteria (14.583%), Proteobacteria (36.872) with Betaproteobacteria (6.516%), Burkholderiales (6.102%), Comamonadaceae (2.786%), and Verrucomicrobia (5.307%).The most common taxa in wood were: Bacteroidetes (22.722%) including Chryseobacterium (5.074%), Flavobacteriales (10.873%), Sphingobacteriales (9.396%) with Pedobacter cryoconitis (7.306%), Proteobacteria (73.785%) with Enterobacteriales (33.247%) including Serratia (15.303%) and Sodalis (6.524%), Pseudomonadales (9.829%) including Pseudomonas (9.017%), Rhizobiales (6.826%), Sphingomonadales (5.646%), and Xanthomonadales (11.194%). Possible pathogens were Pseudomonas, Rhizobium and Xanthomonas. The initially endophytic character of bacteria is emphasized. Soil and possibly planting material might be the sources of pathogen inoculum.

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Draft Genome Sequences of Seven Chryseobacterium Type Strains

Cited by 10 publications

References 21 publications

Assessment of Chlorella sorokiniana Growth in Anaerobic Digester Effluent

Assessment of Chlorella sorokiniana Growth in Anaerobic Digester Effluent

In vitro assays reveal inherently insecticide-tolerant termite symbionts

Bacteria associated with vascular wilt of poplar

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