Physiology


Publications
79

Refinement of the “ Candidatus Accumulibacter” genus based on metagenomic analysis of biological nutrient removal (BNR) pilot-scale plants operated with reduced aeration

Citation
Stewart et al. (2024). mSystems
Names
“Accumulibacter”
Abstract
ABSTRACT Members of the “ Candidatus Accumulibacter” genus are widely studied as key polyphosphate-accumulating organisms (PAOs) in biological nutrient removal (BNR) facilities performing enhanced biological phosphorus removal (EBPR). This diverse lineage includes 18 “ Ca . Accumulibacter” species, which have been proposed based on the phylogenetic divergence of the polyphosphate kinase 1 (

The ‘Candidatus Phytoplasma ziziphi’ effectors SJP1/2 negatively control leaf size by stabilizing ZjTCP2 in jujube

Citation
Ma et al. (2024). Journal of Experimental Botany
Names
Ca. Phytoplasma ziziphi
Abstract
Abstract Phytoplasmas manipulate host plant development to benefit their invasion and insect vector colonization. However, the virulence factors and mechanisms underlying small leaf formation caused by jujube witches’ broom (JWB) phytoplasmas remain largely unknown. Here, effectors SJP1 and SJP2 from JWB phytoplasmas were identified to induce small leaf formation in jujube. In vivo interaction and expression assays showed that SJP1 and SJP2 interacted with and stabilized ZjTCP2. O

Candidatus Methanosphaera massiliense sp. nov., a methanogenic archaeal species found in a human fecal sample and prevalent in pigs and red kangaroos

Citation
Pilliol et al. (2024). Microbiology Spectrum 12 (2)
Names
Ca. Methanosphaera massiliense
Abstract
ABSTRACT Methanosphaera stadtmanae was the sole Methanosphaera representative to be cultured and detected by molecular methods in the human gut microbiota, further associated with digestive and respiratory diseases, leaving unknown the actual diversity of human-associated Methanosphaera species. Here, a novel Methanosphaera species, Candidatus Methanosphaera massilie

Molecular characterization of ‘Candidatus Phytoplasma phoenicium’ infecting almond (Prunus dulcis) and evaluation of biochemical defenses produced in the plants

Citation
Akkurak et al. (2024). Journal of Phytopathology 172 (1)
Names
Ca. Phytoplasma phoenicium
Abstract
AbstractIncreasing incidences of phytoplasma infestations in Almond trees warrants the better management approach to prevent yield losses. Disease management rely on identification of the pathogen based on molecular profiling. The present study aimed, to identify the phytoplasma agent in almond trees and to measure the biochemical responses it causes in the host. Direct and Nested PCRs performed using phytoplasma specific primer pairs 16S rRNA, detected the presence of phytoplasma agent in sympt

A comprehensive overview of the Chloroflexota community in wastewater treatment plants worldwide

Citation
Petriglieri et al. (2023). mSystems 8 (6)
Names
“Flexifilaceae” “Flexifilum” “Flexifilum affine” “Flexifilum breve” “Flexicrinis” “Flexicrinis proximus” “Flexicrinis affinis” “Leptovillus” “Leptovillus affinis” “Leptovillus gracilis” “Leptofilum” “Leptofilum proximum” “Leptofilum gracile” “Promineofilum glycogenicum” “Trichofilum” “Trichofilum aggregatum” “Hadersleviella” “Hadersleviella danica” “Villigracilaceae” “Villigracilis saccharophilus” “Villigracilis proximus” “Villigracilis affinis” “Villigracilis” “Villigracilis propinquus” “Villigracilis adiacens” “Villigracilis vicinus” “Defluviilinea proxima” “Defluviilinea” “Defluviilinea gracilis” “Brachythrix” “Brachythrix odensensis” “Avedoeria” “Avedoeria danica” “Epilineales” “Epilineaceae” “Epilinea” “Epilinea brevis”
Abstract
ABSTRACT Filamentous Chloroflexota are abundant in activated sludge wastewater treatment plants (WWTPs) worldwide and are occasionally associated with poor solid-liquid separation or foaming, but most of the abundant lineages remain undescribed. Here, we present a comprehensive overview of Chloroflexota abundant in WWTPs worldwide, using high-quality metagenome-assembled genomes (MAGs) and 16S rRNA amplicon data from 740 Danish and global WWTPs. Many novel taxa were descri

The plant pathogenic bacterium Candidatus Liberibacter solanacearum induces calcium-regulated autophagy in midgut cells of its insect vector Bactericera trigonica

Citation
Sarkar et al. (2023). Microbiology Spectrum 11 (5)
Names
“Liberibacter solanacearum”
Abstract
ABSTRACT Autophagy plays an important role against pathogen infection in many organisms; however, little has been done with regard to vector-borne plant and animal pathogens, that sometimes replicate and cause deleterious effects in their vectors. Candidatus Liberibacter solanacearum (CLso) is a fastidious gram-negative phloem-restricted plant pathogen and vectored by the carrot psyllid, Bactericera trigonica . The plant dise

Indications for a genetic basis for big bacteria and description of the giant cable bacterium Candidatus Electrothrix gigas sp. nov

Citation
Geelhoed et al. (2023). Microbiology Spectrum 11 (5)
Names
Electrothrix arhusiensis Electrothrix communis Ts Electrothrix Electronema Electrothrix gigas
Abstract
ABSTRACT Bacterial cells can vary greatly in size, from a few hundred nanometers to hundreds of micrometers in diameter. Filamentous cable bacteria also display substantial size differences, with filament diameters ranging from 0.4 to 8 µm. We analyzed the genomes of cable bacterium filaments from 11 coastal environments of which the resulting 23 new genomes represent 10 novel species-level clades of Candidatus Electrothrix and two clades that putat

Distribution, abundance, and ecogenomics of the Palauibacterales , a new cosmopolitan thiamine-producing order within the Gemmatimonadota phylum

Citation
Aldeguer-Riquelme et al. (2023). mSystems
Names
Palauibacter ramosifaciens Palauibacter polyketidifaciens Kutchimonas denitrificans Ts Carthagonibacter metallireducens Ts Palauibacter denitrificans Palauibacter irciniicola Palauibacter australiensis Palauibacter poriticola Palauibacter rhopaloidicola Palauibacter scopulicola Palauibacter soopunensis Ts Benthicola azotiphorus Indicimonas acetifermentans Ts Benthicola marisminoris Ts Caribbeanibacter nitroreducens Ts Humimonas hydrogenitrophica Ts Kutchimonas Indicimonas Carthagonibacter Caribbeanibacter Humimonas Benthicola Palauibacter Palauibacterales Palauibacteraceae
Abstract
ABSTRACT The phylum Gemmatimonadota comprises mainly uncultured microorganisms that inhabit different environments such as soils, freshwater lakes, marine sediments, sponges, or corals. Based on 16S rRNA gene studies, the group PAUC43f is one of the most frequently retrieved Gemmatimonadota in marine samples. However, its physiology and ecological roles are completely unknown since, to date, not a single PAUC43f isolate or me

Pathogenicity and Transcriptomic Analyses of Two “ Candidatus Liberibacter asiaticus” Strains Harboring Different Types of Phages

Citation
Zheng et al. (2023). Microbiology Spectrum 11 (3)
Names
Ca. Liberibacter asiaticus
Abstract
Citrus Huanglongbing (HLB), also called citrus greening disease, is a highly destructive disease threatening citrus production worldwide. “ Candidatus Liberibacter asiaticus” is one of the most common putative causal agents of HLB. Phages of “ Ca . Liberibacter asiaticus”

An effector of ‘Candidatus Liberibacter asiaticus’ manipulates autophagy to promote bacterial infection

Citation
Shi et al. (2023). Journal of Experimental Botany
Names
Ca. Liberibacter asiaticus
Abstract
Abstract Autophagy functions in plant host immunity responses to pathogen infection. The molecular mechanisms and functions used by the citrus Huanglongbing (HLB)-associated intracellular bacterium ‘Candidatus Liberibacter asiaticus’ (CLas) to manipulate autophagy are unknown. We identified a CLas effector, SDE4405 (CLIBASIA_04405), which contributes to HLB progression. ‘Wanjincheng’ orange (Citrus sinensis) transgenic plants expressing SDE4405 promotes CLas proliferation and symp