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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

Identification and Distribution of the ‘Candidatus Liberibacter asiaticus’-Asian Citrus Psyllid Pathosystem in Saudi Arabia

Citation
Ibrahim et al. (2024). Plant Disease 108 (4)
Names
Ca. Liberibacter asiaticus
Abstract
Citrus greening disease was first reported in Saudi Arabia during the 1970s when characteristic foliar and fruit symptoms were observed in commercial citrus groves. However, ‘Candidatus Liberibacter asiaticus’ (CLas) was not detected in symptomatic trees until 1981 to 1984 when CLas-like cells were observed by transmission electron microscopy in leaves collected from symptomatic citrus groves in southwestern Saudi Arabia. Despite the anticipated establishment of the CLas-Asian citrus psyllid (A