Levy, Julien G.


Publications
9

A ‘Candidatus Liberibacter solanacearum’ Haplotype B-Specific Family of Candidate Bacterial Effectors

Citation
Levy et al. (2023). Phytopathology® 113 (9)
Names
“Liberibacter solanacearum”
Abstract
‘ Candidatus Liberibacter solanacearum’ (Lso) is a phloem-limited pathogen associated with devastating diseases in members of the Solanaceae and Apiaceae and vectored by several psyllid species. Different Lso haplotypes have been identified, and LsoA and LsoB are responsible for diseases in Solanaceae crops. Our efforts are aimed at identifying pathogenicity factors used by this bacterium to thrive in different hosts. Bacterial secreted proteins can play a role in host colonization or the manip

Evaluation of the Effect of ‘Candidatus Liberibacter Solanacearum’ Haplotypes in Tobacco Infection

Citation
Levy et al. (2023). Agronomy 13 (2)
Names
“Liberibacter solanacearum” Liberibacter
Abstract
‘Candidatus Liberibacter solanacearum’ (Lso) is a phloem-limited bacterial plant pathogen infecting solanaceous plants in the Americas and New Zealand and is associated with diseases of apiaceous crops in Europe, Northern Africa, and the Middle East. This pathogen is also related to other Liberibacter species that infect other crops. In the USA, two haplotypes of Lso, LsoA and LsoB, are predominant and responsible for diseases in potato and tomato. Tobacco, Nicotiana tabacum, a model species to

Effects of ‘Candidatus Liberibacter solanacearum’ haplotypes A and B on tomato gene expression and geotropism

Citation
Harrison et al. (2022). BMC Plant Biology 22 (1)
Names
“Liberibacter solanacearum”
Abstract
Abstract Background The tomato psyllid, Bactericera cockerelli Šulc (Hemiptera: Triozidae), is a pest of solanaceous crops such as tomato (Solanum lycopersicum L.) in the U.S. and vectors the disease-causing pathogen ‘Candidatus Liberibacter solanacearum’ (or Lso). Disease symptom severity is dependent on Lso haplotype: tomato plants infected with Lso haplotype B experience more severe symptoms and higher mortality compared to plants infected with Lso haplotype A.

Lso-HPE1, an Effector of ‘Candidatus Liberibacter solanacearum’, Can Repress Plant Immune Response

Citation
Levy et al. (2020). Phytopathology® 110 (3)
Names
“Liberibacter solanacearum”
Abstract
‘Candidatus Liberibacter solanacearum’ is a plant pathogen affecting the families Solanaceae and Apiaceae in different parts of the world. ‘Ca. L. solanacearum’ is a Gram-negative, fastidious α-proteobacterium that is vectored by different psyllid species. Plant-pathogenic bacteria are known for interfering with the host physiology or defense mechanisms, often by secreting bacterial effectors. Effector proteins are critical for virulence; therefore, the identification of effectors could help wi

Mycorrhization Mitigates Disease Caused by “Candidatus Liberibacter solanacearum” in Tomato

Citation
Tiénébo et al. (2019). Plants 8 (11)
Names
“Liberibacter solanacearum”
Abstract
Disease caused by the bacterial pathogen “Candidatus Liberibacter solanacearum” (Lso) represents a serious threat to solanaceous crop production. Insecticide applications to control the psyllid vector, Bactericera cockerelli Šulc (Hemiptera: Triozidae) has led to the emergence of resistance in psyllids populations. Efforts to select natural resistant cultivars have been marginally successful and have been complicated by the presence of distinct Lso haplotypes (LsoA, LsoB) differing in symptoms s

The Candidatus Liberibacter–Host Interface: Insights into Pathogenesis Mechanisms and Disease Control

Citation
Wang et al. (2017). Annual Review of Phytopathology 55 (1)
Names
Liberibacter
Abstract
“Candidatus Liberibacter” species are associated with economically devastating diseases of citrus, potato, and many other crops. The importance of these diseases as well as the proliferation of new diseases on a wider host range is likely to increase as the insects vectoring the “Ca. Liberibacter” species expand their territories worldwide. Here, we review the progress on understanding pathogenesis mechanisms of “Ca. Liberibacter” species and the control approaches for diseases they cause. We d