Brown, Judith K.


Publications
10

Differential expression of “Candidatus Liberibacter solanacearum” genes and prophage loci in different life stages of potato psyllid

Citation
Saberi et al. (2024). Scientific Reports 14 (1)
Names
“Liberibacter solanacearum” Liberibacter
Abstract
AbstractPsyllid species, including the potato psyllid (PoP) Bactericera cockerelli (Sulc) (Triozidae) serve as host and vector of “Candidatus Liberibacter spp.” (“Ca. Liberibacter”), which also infects diverse plant hosts, including citrus and tomato. Psyllid transmission of “Ca. Liberibacter” is circulative and propagative. The time of “Ca. Liberibacter” acquisition and therefore vector life stage most competent for bacterial transmission varies by pathosystems. Here, the potato psyllid-“Ca. Li

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

Sub-optimal temperatures lead to altered expression of stress-related genes and increased ‘Candidatus Liberibacter solanacearum’ accumulation in potato psyllid

Citation
Fisher et al. (2024). Frontiers in Insect Science 3
Names
“Liberibacter solanacearum”
Abstract
IntroductionThe potato psyllid Bactericera cockerelli is the insect vector of the fastidious bacterium ‘Candidatus Liberibacter solanacearum’. The bacterium infects both B. cockerelli and plant species, causing zebra chip (ZC) disease of potato and vein-greening disease of tomato. Temperatures are known to influence the initiation and progression of disease symptom in the host plant, and seasonal transitions from moderate to high temperatures trigger psyllid dispersal migration to facilitate sur

Characterization of the Asian Citrus Psyllid-‘Candidatus Liberibacter Asiaticus’ Pathosystem in Saudi Arabia Reveals Two Predominant CLas Lineages and One Asian Citrus Psyllid Vector Haplotype

Citation
Ibrahim et al. (2022). Microorganisms 10 (10)
Names
Liberibacter Ca. Liberibacter asiaticus
Abstract
In Saudi Arabia (SA), the citrus greening disease is caused by ‘Candidatus Liberibacter asiaticus’ (CLas) transmitted by the Asian citrus psyllid (ACP) Diaphorina citri. The origin and route(s) of the ACP-CLas pathosystem invasion in SA have not been studied. Adult ACP were collected from citrus trees in SA and differentiated by analysis of the mitochondrial cytochrome oxidase I (mtCOI) and nuclear copper transporting protein (atox1) genes. A phylogenetic analysis of the Wolbachia spp. surface p

Colonization and Intrusive Invasion of Potato Psyllid by ‘Candidatus Liberibacter solanacearum’

Citation
Cicero et al. (2017). Phytopathology® 107 (1)
Names
“Liberibacter solanacearum”
Abstract
Previous studies have shown that the fastidious bacterial plant pathogen ‘Candidatus Liberibacter solanacearum’ (CLso) is transmitted circulatively and propagatively by the potato psyllid (PoP) Bactericera cockerelli. In this study, the temporal and spatial interrelationships between CLso PoP were investigated by scanning electron microscopy of the digestive system of PoP immature and adult instars and salivary glands of adults post CLso ingestion. CLso biofilms were not detectable on the outer