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Diversity of ‘Candidatus Liberibacter asiaticus’ Strains in Texas Revealed by Prophage Sequence Analyses

Citation
De Leon et al. (2024). Plant Disease
Names
Ca. Liberibacter asiaticus
Abstract
Prophages/phages are important components of the genome of ‘Candidatus Liberibacter asiaticus’ (CLas), an unculturable alphaproteobacterium associated with citrus huanglongbing (HLB) disease. Phage variations have significant contributions to CLas strain diversity research, which provide critical information for HLB management. In this study, prophage variations among selected CLas strains from southern Texas were studied. The CLas strains were collected from three different CLas inhabitant env

Divergence within the Taxon ‘Candidatus Phytoplasma asteris’ Confirmed by Comparative Genome Analysis of Carrot Strains

Citation
Toth et al. (2024). Microorganisms 12 (5)
Names
Ca. Phytoplasma asteris
Abstract
Phytoplasmas are linked to diseases in hundreds of economically important crops, including carrots. In carrots, phytoplasmosis is associated with leaf chlorosis and necrosis, coupled with inhibited root system development, ultimately leading to significant economic losses. During a field study conducted in Baden-Württemberg (Germany), two strains of the provisional taxon ‘Candidatus Phytoplasma asteris’ were identified within a carrot plot. For further analysis, strains M8 and M33 underwent shot

Genome reduction and horizontal gene transfer in the evolution of Endomicrobia—rise and fall of an intracellular symbiosis with termite gut flagellates

Citation
Mies et al. (2024). mBio
Names
Ruminimicrobium bovinum Ts Ruminimicrobiellum ovillum Endomicrobiellum Ectomicrobium Parendomicrobium Ectomicrobium neotermitis Ts Parendomicrobium reticulitermitis Ts Ruminimicrobiellum bubulum Ts Ruminimicrobiellum caprinum Ruminimicrobiellum tauri Praeruminimicrobium Proruminimicrobium Ruminimicrobium Ruminimicrobiellum Endomicrobiellum devescovinae Proruminimicrobium quisquiliarum Ts Praeruminimicrobium purgamenti Ts Endomicrobiellum agilis Endomicrobiellum siamense Endomicrobiellum basalitermitum Endomicrobiellum guadaloupense Endomicrobiellum meruensis Endomicrobium embiratermitis Endomicrobium labiotermitis Endomicrobium neocapritermitis Endomicrobium macrotermitis Endomicrobium procryptotermitis Endomicrobiellum dinenymphae Endomicrobiellum trichonymphae Ts Endomicrobiellum pyrsonymphae Endomicrobiellum neotermitis Endomicrobiellum mastotermitis Endomicrobiellum calonymphae Endomicrobiellum cryptotermitis Endomicrobiellum roisinitermitis Endomicrobiellum incisitermitis Endomicrobiellum porotermitis Endomicrobiellum cubanum Endomicrobiellum africanum
Abstract
ABSTRACT Bacterial endosymbionts of eukaryotic hosts typically experience massive genome reduction, but the underlying evolutionary processes are often obscured by the lack of free-living relatives. Endomicrobia, a family-level lineage of host-associated bacteria in the phylum Elusimicrobiota that comprises both free-living representatives and endosymbionts of termite gut flagellates, are an excellent model to study e

‘Candidatus Phytoplasma mali’ SAP11-Like protein modulates expression of genes involved in energy production, photosynthesis, and defense in Nicotiana occidentalis leaves

Citation
Mittelberger et al. (2024). BMC Plant Biology 24 (1)
Names
Ca. Phytoplasma mali
Abstract
Abstract Background ‘Candidatus Phytoplasma mali’, the causal agent of apple proliferation disease, exerts influence on its host plant through various effector proteins, including SAP11CaPm which interacts with different TEOSINTE BRANCHED1/ CYCLOIDEA/ PROLIFERATING CELL FACTOR 1 and 2 (TCP) transcription factors. This study examines the transcriptional response of the plant upon early expression of SAP11CaPm. For that purpose, leaves of Nicotiana occidentalis H.-M

Mitochondrial Genome Resource of the Cottony Ash Psyllid, a Host of a Newly Identified ‘Candidatus Liberibacter’ bacterium

Citation
Sabaghian et al. (2024). PhytoFrontiers™
Names
“Liberibacter solanacearum” Liberibacter
Abstract
Cottony ash psyllid (CAP, Phyllopsis discrepans) is an important, invasive insect pest of ash trees in North America where it has established populations and is the host of a newly identified strain of 'Candidatus Liberibacter solanacearum'. However, not much is known about the diversity of its introduced population. In this study, a CAP mitochondrial genome (mitogenome) sequence was obtained from a collection in Saskatoon, Saskatchewan, Canada. The CAP mitogenome is a circular DNA of 18,824 bp

Identification of ‘Candidatus Liberibacter asiaticus’, the Huanglongbing Bacterium, in Citrus from Colombia

Citation
Chaves-Sierra et al. (2024). Plant Disease 108 (5)
Names
Liberibacter Ca. Liberibacter asiaticus
Abstract
‘Candidatus Liberibacter’ spp. are the most prevalent microorganisms in the citrus plant, associated with citrus huanglongbing, which are transmitted by psyllid vectors. In Colombia, the vector Diaphorina citri Kuwayama has been reported in different regions, but ‘Ca. Liberibacter asiaticus’ (CLas) has only been detected in insect vectors, not in citrus host plants. To identify the presence and quantify the pathogen in citrus tissues, we employed a combined strategy that involved three techniqu