Plant Science


Publications
825

The ‘Candidatus phytoplasma ziziphi’ effectors SJP1 and SJP2 destabilise the bifunctional regulator ZjTCP7 to modulate floral transition and shoot branching

Citation
Ma et al. (2024). Plant, Cell & Environment 47 (8)
Names
Ca. Phytoplasma ziziphi
Abstract
AbstractPhytoplasmic SAP11 effectors alter host plant architecture and flowering time. However, the exact mechanisms have yet to be elucidated. Two SAP11‐like effectors, SJP1 and SJP2, from ‘Candidatus Phytoplasma ziziphi’ induce shoot branching proliferation. Here, the transcription factor ZjTCP7 was identified as a central target of these two effectors to regulate floral transition and shoot branching. Ectopic expression of ZjTCP7 resulted in enhanced bolting and earlier flowering than did the

Hiding in Plain Sight: A Widespread Native Perennial Harbors Diverse Haplotypes of ‘Candidatus Liberibacter solanacearum’ and Its Potato Psyllid Vector

Citation
Kenney et al. (2024). Phytopathology® 114 (7)
Names
“Liberibacter solanacearum”
Abstract
The unculturable bacterium ‘ Candidatus Liberibacter solanacearum’ (CLso) is responsible for a growing number of emerging crop diseases. However, we know little about the diversity and ecology of CLso and its psyllid vectors outside of agricultural systems, which limits our ability to manage crop disease and understand the impacts this pathogen may have on wild plants in natural ecosystems. In North America, CLso is transmitted to crops by the native potato psyllid ( Bactericera cockerelli). Ho

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

Citation
De Leon et al. (2024). Plant Disease 108 (6)
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

Identification and Characterization of Polyamine Metabolism in Citrus in Response to ‘Candidatus Liberibacter asiaticus’ Infection

Citation
Qifang et al. (2024). Phytopathology® 114 (6)
Names
Ca. Liberibacter asiaticus
Abstract
Citrus Huanglongbing, one of the most devastating citrus diseases, is caused by ‘ Candidatus Liberibacter asiaticus’ ( CLas). Polyamines are aliphatic nitrogen-containing compounds that play important roles in disease resistance and are synthesized primarily by two pathways: an arginine decarboxylation pathway and an ornithine decarboxylation pathway. However, it is unclear whether polyamines play a role in the tolerance of citrus to infection by CLas and, if so, whether one or both of the core

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

Molecular Identification of ‘Candidatus Phytoplasma malaysianum’-Related Strains Associated with Areca catechu Palm Yellow Leaf Disease and Phylogenetic Diversity of the Phytoplasmas Within the 16SrXXXII Group

Citation
Yu et al. (2024). Plant Disease 108 (5)
Names
Ca. Phytoplasma malaysianum
Abstract
Areca catechu palm is an important cash plant in Hainan Island of China and also in the tropical regions of the world. A. catechu palm yellow leaf (AcYL) disease caused by phytoplasmas is a devastating disease for plant production. In the study, the phytoplasmas associated with the AcYL disease were identified and characterized based on their conserved genes, and genetic variation and phylogenetic relationship of the phytoplasma strains in the 16SrXXXII group were demonstrated. The results indi

Dynamics of ‘Candidatus Liberibacter asiaticus’ Growth, Concentrations of Reactive Oxygen Species, and Ion Leakage in Huanglongbing-Positive Sweet Orange

Citation
Pandey et al. (2024). Phytopathology® 114 (5)
Names
Ca. Liberibacter asiaticus
Abstract
Citrus Huanglongbing (HLB) caused by ‘ Candidatus Liberibacter asiaticus’ (CLas) is the most devastating citrus disease worldwide. CLas induces systemic and chronic reactive oxygen species (ROS) production, which has been suggested to be a primary cause of cell death in phloem tissues and subsequent HLB symptoms. Mitigating oxidative stress caused by CLas using horticultural approaches has been suggested as a useful strategy to reduce HLB damages. To provide information regarding the applicatio

An Inhibitor-Monitorable Single-Tube Duplex Quantitative Real-Time PCR Assay for the Detection of ‘Candidatus Liberibacter asiaticus’

Citation
Huang et al. (2024). Plant Disease 108 (5)
Names
Ca. Liberibacter asiaticus
Abstract
Huanglongbing (HLB) is a citrus infectious disease caused by ‘Candidatus Liberibacter’ spp. Recently, it has begun to spread rapidly worldwide, causing significant losses to the citrus industry. Early diagnosis of HLB relies on quantitative real-time PCR assays. However, the PCR inhibitors found in the nucleic acid extracted from plant materials pose challenges for PCR assays because they may result in false-negative results. Internal standard (IS) can be introduced to establish a single-tube d