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Putting ‘X’ into context: the diversity of ‘Candidatus Phytoplasma pruni’ strains associated with the induction of X-disease

Citation
Molnar et al. (2024). Plant Disease
Names
Ca. Phytoplasma pruni
Abstract
Recurrent epiphytotics of X-disease, caused by ‘Candidatus Phytoplasma pruni’, have inflicted significant losses on commercial cherry and peach production across North America in the last century. During this period, there have been multiple studies reporting different disease phenotypes, and more recently, identifying different strains through sequencing core genes, but the symptoms have not, to date, been linked with genotype. Therefore, in this study we collected and assessed differing disea

Detection of ‘Candidatus Phytoplasma mali’ and ‘Candidatus Phytoplasma prunorum’ in apple trees

Citation
Meral et al. (2024). Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi
Names
Ca. Phytoplasma mali Ca. Phytoplasma prunorum
Abstract
The apple orchards in Niğde, Turkiye were surveyed for ‘Candidatus Phytoplasma mali’ associated with apple proliferation disease, and the suspicious samples were tested by PCR-RFLP methods. A comprehensive study was conducted which included sampling from a total of 19 orchards from four different districts. The samples were collected according to the major symptoms of phytoplasma disease which were foliar reddening, witches’ brooms, leaf rosettes, yellowing, longer peduncles and development of u

Grove-level analysis of titer and prevalence of “Candidatus Liberibacter asiaticus” and Wolbachia in Diaphorina citri, vector of citrus Huanglongbing

Citation
Mann et al. (2024). Phytobiomes Journal
Names
Ca. Liberibacter asiaticus
Abstract
Huanglongbing (HLB, or citrus greening disease) affects all citrus varieties world-wide. In the USA, Asia, and South America the causal agent is “Candidatus Liberibacter asiaticus” (CLas), a phloem-limited, uncultured, alphaproteobacterium. The hemipteran insect vector, Diaphorina citri (Asian citrus psyllid) acquires and transmits CLas in a circulative, propagative manner. In addition to CLas, D. citri hosts multiple symbiotic bacterial species including Wolbachia (wDi). In D. citri, wDi has b

Integrated bacterial transcriptome and host metabolome analysis reveals insights into “ Candidatus Liberibacter asiaticus” population dynamics in the fruit pith of three citrus cultivars with different tolerance

Citation
Li et al. (2024). Microbiology Spectrum 12 (4)
Names
Ca. Liberibacter asiaticus
Abstract
ABSTRACT “ Candidatus Liberibacter asiaticus” (CLas), the causal agent of citrus Huanglongbing (HLB), is able to multiply to a high abundance in citrus fruit pith. However, little is known about the biological processes and phytochemical substances that are vital for CLas colonization and growth in fruit pith. In this study, CLas-infected fruit pith of three citrus cultivars (“Shatangju” mandarin, “Guanxi” pomelo, and

Zoothamnium mariella sp. nov., a marine, colonial ciliate with an atypcial growth pattern, and its ectosymbiont Candidatus Fusimicrobium zoothamnicola gen. nov., sp. nov

Citation
Kendlbacher et al. (2024). PLOS ONE 19 (4)
Names
Ca. Fusimicrobium zoothamnicola
Abstract
Ciliates are unicellular eukaryotes, regularly involved in symbiotic associations. Symbionts may colonize the inside of their cells as well as their surface as ectosymbionts. Here, we report on a new ciliate species, designated as Zoothamnium mariella sp. nov. (Peritrichia, Sessilida), discovered in the northern Adriatic Sea (Mediterranean Sea) in 2021. We found this ciliate species to be monospecifically associated with a new genus of ectosymbiotic bacteria, here proposed as Candidatus Fusimicr

Experimental evidence of <scp>d</scp>‐glutamate racemase activity in the uncultivated bacterium Candidatus Saccharimonas aalborgensis

Citation
Peñalver et al. (2024). Environmental Microbiology 26 (4)
Names
Ca. Saccharimonas aalborgenesis Saccharimonas aalborgensis Ts
Abstract
AbstractThe Candidate Phyla Radiation (CPR) encompasses widespread uncultivated bacteria with reduced genomes and limited metabolic capacities. Most CPR bacteria lack the minimal set of enzymes required for peptidoglycan (PG) synthesis, leaving it unclear how these bacteria produce this essential envelope component. In this study, we analysed the distribution of d‐amino acid racemases that produce the universal PG components d‐glutamate (d‐Glu) or d‐alanine (d‐Ala). We also examined moonlighting