Kosakonia

Jan‐Roblero, Janet; Cruz-Maya, Juan Antonio; Barajas, Claudia Guerrero

doi:10.1016/b978-0-12-823414-3.00012-5

Cited by 18 publications

(15 citation statements)

References 43 publications

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“…The lipid analysis appeared to capture the characteristic cellular fatty acid content of closely related strains of each species. 11) 12) 13) 14) 15) 16) 17) However, it was not entirely clear due to the lack of standards. Related species of SO_005 ( Papiliotrema laurentii ) was known to produce lipids from D-Xyl, and studies on productivity and lipid composition were investigated.…”

Section: Resultsmentioning

confidence: 99%

Microorganisms Capable of Producing Polysaccharides from D-Xylose

et al. 2022

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In recent years, the importance of biomass utilization has increased, but it has not been effectively exploited. In particular, it is difficult to use hemicellulose, the second most abundant biopolymer of biomass. Therefore, in order to promote the utilization of hemicellulose, we screened for microorganisms capable of producing polysaccharides from xylose. The following four strains were selected from samples collected from various regions of Okinawa Prefecture: Kosakonia sp. (SO_001), Papiliotrema terrestris (SO_005), Pseudoarthrobacter sp. (SO_006), and Williamsia sp. (SO_009). Observation with a scanning electron microscope (SEM) confirmed that each bacterium produced polysaccharides with different shapes. In addition, the molecular weight and sugar composition of the polysaccharides produced by each bacterium were distinct. The selected microorganisms include closely related species known to promote plant growth and known to suppress postharvest pathogens. Since these microorganisms may be used not only in known fields but also in new fields, the results of this research are expected to greatly expand the uses of hemicellulose. extracellular polysaccharides, pentose bioconversion, Kosakonia, Papiliotrema, Pseudoarthrobacter, Williamsia

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Section: Resultsmentioning

confidence: 99%

Microorganisms Capable of Producing Polysaccharides from D-Xylose

et al. 2022

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“…During the germination time, the diversity of dominated microorganisms' increases and as the dominant Kosakonia cloacae, Pantoea agglomerans cultures have also been identified. A study by scientists reported that the genus Kosakonia is part of the Enterobacteria complex most of which is isolated from plants and produces fucose-rich EPS with higher productivity and higher fucose content than previously reported in the studies (Roblero, et al, 2020). Diversity of fungal population in flour was also determined and Phialemoniopsis curvata is highly dominant.…”

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confidence: 95%

The Influence of Germinated Hull-less Barley Sordough Fermentation Conditions on the Microbiota Development

Kļava

Poisa

Reidzāne

et al. 2021

Rural Sustainability Research

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Sourdough plays an important role in quality assurance, especially during developing wholegrain wheat bread products. The value of barley and hull-less barley grains is determined by the low lipid and high carbohydrate (starch and resistant starch) content, balanced amino acid profile, dietary fibre and phenolic compounds. During germination (24 h) the amount of sugar, amino acids and vitamins increase in the grains. Therefore, it could be optimal environment for microbiota growth in sourdough. The goal of the research was to find optimal technological parameters and to study microorganism growth dynamic during the fermentation of sourdough with germinated hull-less barley. The study was performed using three steps of fermentation, with different temperature and time parameters. At each step pH, dynamics of lactic acid bacteria (LAB), yeast-like fungi and total plate count (TPC) growth were determined using standard methods. The results of the study showed that the optimal fermentation conditions for the first stage are 48 h and 26 ± 1 °C, for the second stage 8 h and 26 ± 1 °C and for the third stage 20 h and 28 ± 1 °C. During fermentation of the sourdough, the pH 3.91 is reached, LAB 8.8 log10 CFU g−1, and the yeast-like fungi 8.7 log10 CFU g−1 was determined. Obtained data show that more than 80 bacteria and 50 microscopic fungal species were detected in hull-less barley flour, but after germination their diversity decreased and in the germinated hull-less barley sourdoughs dominated species were Pediococcus pentosaceus.

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“…As opposed to feeding on fungal hyphae or intrahyphal contents, a large number of soil bacteria have evolved strategies to utilize fungus-secreted metabolites [ 52 , 53 ]. Bacteria belonging to the genus Kosakonia of the family Enterobacteriaceae are common residents of the rhizosphere which are often found to be associated with plant tissues as endophytes and can promote plant growth via different mechanisms [ 54 , 55 , 56 , 57 ]. Kosakonia radicincitans (DSM 16656) is a nitrogen-fixing bacterium [ 58 ], which has a broad host range and upon successful inoculation can promote plant growth and yield under greenhouse conditions and field trials [ 59 , 60 , 61 , 62 ].…”

Section: Introductionmentioning

confidence: 99%

It Takes Two to Tango: A Bacterial Biofilm Provides Protection against a Fungus-Feeding Bacterial Predator

et al. 2021

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Fungus-bacterium interactions are widespread, encompass multiple interaction types from mutualism to parasitism, and have been frequent targets for microbial inoculant development. In this study, using in vitro systems combined with confocal laser scanning microscopy and real-time quantitative PCR, we test whether the nitrogen-fixing bacterium Kosakonia radicincitans can provide protection to the plant-beneficial fungus Serendipita indica, which inhabits the rhizosphere and colonizes plants as an endophyte, from the fungus-feeding bacterium Collimonas fungivorans. We show that K. radicincitans can protect fungal hyphae from bacterial feeding on solid agar medium, with probable mechanisms being quick hyphal colonization and biofilm formation. We furthermore find evidence for different feeding modes of K. radicincitans and C. fungivorans, namely “metabolite” and “hyphal feeding”, respectively. Overall, we demonstrate, to our knowledge, the first evidence for a bacterial, biofilm-based protection of fungal hyphae against attack by a fungus-feeding, bacterial predator on solid agar medium. Besides highlighting the importance of tripartite microbial interactions, we discuss implications of our results for the development and application of microbial consortium-based bioprotectants and biostimulants.

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Kosakonia

Cited by 18 publications

References 43 publications

Microorganisms Capable of Producing Polysaccharides from D-Xylose

Microorganisms Capable of Producing Polysaccharides from D-Xylose

The Influence of Germinated Hull-less Barley Sordough Fermentation Conditions on the Microbiota Development

It Takes Two to Tango: A Bacterial Biofilm Provides Protection against a Fungus-Feeding Bacterial Predator

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