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First Report of the Causal Agent of Huanglongbing (“Candidatus Liberibacter asiaticus”) in Brazil

Citation
Coletta-Filho et al. (2004). Plant Disease 88 (12)
Names
Ca. Liberibacter asiaticus
Abstract
Huanglongbing (ex-greening) disease is one of the most serious diseases of citrus. It is caused by the phloem-limited, gram-negative bacterium “Candidatus Liberibacter spp.”. This bacterium is not well characterized mainly because it is still uncultured. There are two known strains, Asian (“Candidatus Liberibacter asiaticus”) and African (“Candidatus Liberibacter africanus”) that cause severe damage to citrus plants including twig dieback, decline, and death. Symptoms first appear as leaf mottl

Characterization of “ Candidatus Piscichlamydia salmonis” (Order Chlamydiales ), a Chlamydia-Like Bacterium Associated With Epitheliocystis in Farmed Atlantic Salmon ( Salmo salar )

Citation
Draghi et al. (2004). Journal of Clinical Microbiology 42 (11)
Names
Ca. Piscichlamydia salmonis
Abstract
ABSTRACT To characterize intracellular gram-negative bacteria associated with epitheliocystis in farmed Atlantic salmon ( Salmo salar ), gills with proliferative lesions were collected for histopathology, conventional transmission and immunoelectron microscopy, in situ hybridization, and DNA extraction during epitheliocystis outbreaks in Ireland and Norway in 1999 and 2000, respectively, and compared by ultrastructure and immunoreactivity to nonprol

Description of ‘Candidatus Helicobacter heilmannii’ based on DNA sequence analysis of 16S rRNA and urease genes

Citation
O'Rourke et al. (2004). International Journal of Systematic and Evolutionary Microbiology 54 (6)
Names
Ca. Helicobacter heilmannii
Abstract
While Helicobacter pylori is accepted as the major bacterial agent of gastric disease in humans, some patients and many animals are infected with a larger, tightly helical-shaped bacterium previously referred to as ‘Helicobacter heilmannii’ or ‘Gastrospirillum hominis’. Taxonomic classification of these bacteria has been hampered by the inability to cultivate them in vitro and by the inadequate discriminatory power of 16S rRNA gene sequence analysis. This study describes the detection and phylog

‘Candidatus Burkholderia calva’ and ‘Candidatus Burkholderia nigropunctata’ as leaf gall endosymbionts of African Psychotria

Citation
Van Oevelen et al. (2004). International Journal of Systematic and Evolutionary Microbiology 54 (6)
Names
Ca. Burkholderia nigropunctata Ca. Burkholderia calva
Abstract
Phylogenetic 16S rRNA gene analysis was used to assign the bacterial leaf-nodulating endosymbionts of two tropical African Psychotria species to the genus Burkholderia. The microsymbionts of the different Psychotria hosts were recognized as distinct and novel species of Burkholderia on the basis of relatively low intersequence similarities and sufficiently large evolutionary distances when compared with each other and their closest validly named neighbours. The obligate endosymbiotic nature of t

Isolation, Free-Living Capacities, and Genome Structure of “ Candidatus Glomeribacter gigasporarum,” the Endocellular Bacterium of the Mycorrhizal Fungus Gigaspora margarita

Citation
Jargeat et al. (2004). Journal of Bacteriology 186 (20)
Names
Ca. Glomeribacter gigasporarum
Abstract
ABSTRACT “ Candidatus Glomeribacter gigasporarum” is an endocellular β-proteobacterium present in the arbuscular mycorrhizal (AM) fungus Gigaspora margarita . We established a protocol to isolate “ Ca . Glomeribacter gigasporarum” from its host which allowed us to carry out morphological, physiological, and genomic investigations on purified bacteria. They are rod shaped, with a cell wall typical of gr

Candidatus Hepatoplasma crinochetorum,” a New, Stalk-Forming Lineage of Mollicutes Colonizing the Midgut Glands of a Terrestrial Isopod

Citation
Wang et al. (2004). Applied and Environmental Microbiology 70 (10)
Names
Hepatoplasma Hepatoplasma crinochetorum Ts
Abstract
ABSTRACT Uncultivated bacteria that densely colonize the midgut glands (hepatopancreas) of the terrestrial isopod Porcellio scaber (Crustacea: Isopoda) were identified by cloning and sequencing of their 16S rRNA genes. Phylogenetic analysis revealed that these symbionts represent a novel lineage of the Mollicutes and are only distantly related (<82% sequence identity) to members of the Mycoplasmatales