Food Science


Publications (99)

Dehalogenation of Chlorinated Ethenes to Ethene by a Novel Isolate, “ <i>Candidatus</i> Dehalogenimonas etheniformans”

Citation
Chen et al. (2022). Applied and Environmental Microbiology 88 (12)
Names
Ca. Dehalogenimonas etheniformans
Subjects
Applied Microbiology and Biotechnology Biotechnology Ecology Food Science
Abstract
Chlorinated ethenes are risk drivers at many contaminated sites, and current bioremediation efforts focus on organohalide-respiring Dehalococcoides mccartyi strains to achieve detoxification. We isolated and characterized the first non- Dehalococcoides bacterium, “ Candidatus Dehalogenimonas etheniformans” strain GP, capable of metabolic reductive dechlorination of TCE, all DCE isomers, and VC to environmentally benign ethene.

<i>Methanosaeta</i> and “ <i>Candidatus</i> Velamenicoccus archaeovorus”

Citation
Kizina et al. (2022). Applied and Environmental Microbiology 88 (7)
Names
“Velamenicoccus” “Velamenicoccus archaeovorus”
Subjects
Applied Microbiology and Biotechnology Biotechnology Ecology Food Science
Abstract
Epibiotic bacteria are known to live on and off bacterial cells. Here, we describe the ultramicrobacterial anaerobic epibiont OP3 LiM living on Archaea and Bacteria .

The “Other” <i>Rickettsiales</i> : an Overview of the Family “ <i>Candidatus</i> Midichloriaceae”

Citation
Giannotti et al. (2022). Applied and Environmental Microbiology 88 (6)
Names
Ca. Midichloriaceae
Subjects
Applied Microbiology and Biotechnology Biotechnology Ecology Food Science
Abstract
Among endosymbiotic bacterial lineages, few are as intensely studied as Rickettsiales , which include the causative agents of spotted fever, typhus, and anaplasmosis. However, an important subgroup called “ Candidatus Midichloriaceae” receives little attention despite accounting for a third of the diversity of Rickettsiales and harboring a wide range of bacteria with unique features, like the ability to infect mitochondria.

New Avoparcin-like Molecules from the Avoparcin Producer Amycolatopsis coloradensis ATCC 53629

Citation
Ramoni et al. (2022). Fermentation 8 (2)
Names
Amycolatopsis coloradensis
Subjects
Biochemistry, Genetics and Molecular Biology (miscellaneous) Food Science Plant Science
Abstract
Amycolatopsis coloradensis ATCC 53629 is the producer of the glycopeptide antibiotic avoparcin. While setting up the production of the avoparcin complex, in view of its use as analytical standard, we uncovered the production of a to-date not described ristosamynil-avoparcin. Ristosamynil-avoparcin is produced together with α- and β-avoparcin (overall indicated as the avoparcin complex). Selection of one high producer morphological variant within the A. coloradensis population, together with the use of a new fermentation medium, allowed to increase productivity of the avoparcin complex up to 9 g/L in flask fermentations. The selected high producer displayed a non-spore forming phenotype. All the selected phenotypes, as well as the original unselected population, displayed invariably the ability to produce a complex rich in ristosamynil-avoparcin. This suggested that the original strain deposited was not conforming to the description or that long term storage of the lyovials has selected mutants from the original population.

<i>Candidatus</i> Kaistella beijingensis sp. nov., Isolated from a Municipal Wastewater Treatment Plant, Is Involved in Sludge Foaming

Citation
Song et al. (2021). Applied and Environmental Microbiology 87 (24)
Names
Ca. Kaistella beijingensis
Subjects
Applied Microbiology and Biotechnology Biotechnology Ecology Food Science
Abstract
Biological foaming or scumming is a sludge separation problem that has become the subject of major concern for long-term stable activated sludge operation in decades. Biological foaming was considered induced by foaming bacteria.

Genomic Insights into the Ecological Role and Evolution of a Novel Thermoplasmata Order, “ Candidatus Sysuiplasmatales”

Citation
Yuan et al. (2021). Applied and Environmental Microbiology 87 (22)
Names
Ca. Sysuiplasmatales
Subjects
Applied Microbiology and Biotechnology Biotechnology Ecology Food Science
Abstract
A wide array of archaea populate Earth’s extreme environments; therefore, they may play important roles in mediating biogeochemical processes such as iron and sulfur cycling. However, our knowledge of archaeal biology and evolution is still limited considering that the majority of the archaeal diversity is uncultured.

A Glycolipid Glycosyltransferase with Broad Substrate Specificity from the Marine Bacterium “ Candidatus Pelagibacter sp.” Strain HTCC7211

Citation
Wei et al. (2021). Applied and Environmental Microbiology 87 (14)
Names
Ca. Pelagibacter
Subjects
Applied Microbiology and Biotechnology Biotechnology Ecology Food Science
Abstract
The bilayer formed by membrane lipids serves as the containment unit for living microbial cells. In the marine environment, it has been firmly established that phytoplankton and heterotrophic bacteria can substitute phospholipids with nonphosphorus sugar-containing glycoglycerolipids in response to phosphorus limitation.

“ Sifarchaeota ,” a Novel Asgard Phylum from Costa Rican Sediment Capable of Polysaccharide Degradation and Anaerobic Methylotrophy

Citation
Farag et al. (2021). Applied and Environmental Microbiology 87 (9)
Names
Ca. Sifarchaeota Ca. Sifarchaeum subterraneus Ca. Sifarchaeum marinoarchaea Ca. Sifarchaeum
Subjects
Applied Microbiology and Biotechnology Biotechnology Ecology Food Science
Abstract
The exploration of deep marine sediments has unearthed many new lineages of microbes. The finding of this novel phylum of Asgard archaea is important, since understanding the diversity and evolution of Asgard archaea may inform also about the evolution of eukaryotic cells. The comparison of metabolic potentials of the Asgard archaea can help inform about selective pressures the lineages have faced during evolution.

“ Candidatus Liberibacter asiaticus” Secretes Nonclassically Secreted Proteins That Suppress Host Hypersensitive Cell Death and Induce Expression of Plant Pathogenesis-Related Proteins

Citation
Du et al. (2021). Applied and Environmental Microbiology 87 (8)
Names
Ca. Liberibacter asiaticus
Subjects
Applied Microbiology and Biotechnology Biotechnology Ecology Food Science
Abstract
In this study, we present a combined computational and experimental methodology that allows a rapid and efficient identification of the ncSecPs from bacteria, in particular the unculturable bacteria like CLas. Meanwhile, the study determined that a number of CLas ncSecPs suppressed HR-based cell death, and thus indicated a novel role for the bacterial ncSecPs in extracellular milieu.