Chen, Jianchi


Publications
23

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

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

Mitochondrial Genome Resource of the Cottony Ash Psyllid, a Host of a Newly Identified ‘Candidatus Liberibacter’ bacterium

Citation
Sabaghian et al. (2024). PhytoFrontiers™
Names
“Liberibacter solanacearum” Liberibacter
Abstract
Cottony ash psyllid (CAP, Phyllopsis discrepans) is an important, invasive insect pest of ash trees in North America where it has established populations and is the host of a newly identified strain of 'Candidatus Liberibacter solanacearum'. However, not much is known about the diversity of its introduced population. In this study, a CAP mitochondrial genome (mitogenome) sequence was obtained from a collection in Saskatoon, Saskatchewan, Canada. The CAP mitogenome is a circular DNA of 18,824 bp

Genome sequence resource for “Candidatus Liberibacter asiaticus” strain GDCZ from a historical HLB endemic region in China

Citation
Zheng et al. (2023). BMC Genomic Data 24 (1)
Names
Ca. Liberibacter asiaticus
Abstract
Abstract Objectives “Candidatus Liberibacter asiaticus” (CLas) is an un-culturable α-proteobacterium that caused citrus Huanglongbing (HLB), a destructive disease threatening citrus production worldwide. In China, the presence of HLB was first reported in Chaoshan region of Guangdong province, China around a century ago. Thus, whole genome information of CLas strains from Chaoshan area become the most important resource to understand the population diversity and e

Genome sequence resource for “Candidatus Liberibacter asiaticus” strain GDCZ from a historical HLB endemic region in China

Citation
Zheng et al. (2023).
Names
Ca. Liberibacter asiaticus
Abstract
Abstract Objectives: “Candidatus Liberibacter asiaticus” (CLas) is an un-culturable α-proteobacterium that caused citrus Huanglongbing (HLB), a destructive disease threatening citrus production worldwide. In China, the presence of HLB was first reported in Chaoshan region of Guangdong province, China around a century ago. Thus, whole genome information of CLas strains from Chaoshan area become the most important resource to understand the population diversity and evaluation of CLas in Ch

Machine learning and analysis of genomic diversity of “Candidatus Liberibacter asiaticus” strains from 20 citrus production states in Mexico

Citation
Huang et al. (2022). Frontiers in Plant Science 13
Names
Ca. Liberibacter asiaticus
Abstract
BackgroundHuanglongbing (HLB, yellow shoot disease) is a highly destructive citrus disease associated with a nonculturable bacterium, “Candidatus Liberibacter asiaticus” (CLas), which is transmitted by Asian citrus psyllid (ACP, Diaphorina citri). In Mexico, HLB was first reported in Tizimin, Yucatán, in 2009 and is now endemic in 351 municipalities of 25 states. Understanding the population diversity of CLas is critical for HLB management. Current CLas diversity research is exclusively based on

Biological Features and In Planta Transcriptomic Analyses of a Microviridae Phage (CLasMV1) in “Candidatus Liberibacter asiaticus”

Citation
Wang et al. (2022). International Journal of Molecular Sciences 23 (17)
Names
Ca. Liberibacter asiaticus
Abstract
“Candidatus Liberibacter asiaticus” (CLas) is the causal agent of citrus Huanglongbing (HLB, also called citrus greening disease), a highly destructive disease threatening citrus production worldwide. A novel Microviridae phage (named CLasMV1) has been found to infect CLas, providing a potential therapeutic strategy for CLas/HLB control. However, little is known about the CLasMV1 biology. In this study, we analyzed the population dynamics of CLasMV1 between the insect vector of CLas, the Asian c

Investigation of Citrus HLB Symptom Variations Associated with “Candidatus Liberibacter asiaticus” Strains Harboring Different Phages in Southern China

Citation
Bao et al. (2021). Agronomy 11 (11)
Names
Ca. Liberibacter asiaticus
Abstract
Huanglongbing (HLB) is a devastating disease affecting citrus production worldwide. In China, the disease is associated with an unculturable alpha-proteobacterium, “Candidatus Liberibacter asiaticus” (CLas). Phages/prophages of CLas have recently been identified through intensive genomic research. The phage information has facilitated research on CLas biology such as population diversity and virulence gene identification. However, little is known about the roles of CLas phages in HLB symptom dev

A Novel Microviridae Phage (CLasMV1) From “Candidatus Liberibacter asiaticus”

Citation
Zhang et al. (2021). Frontiers in Microbiology 12
Names
Ca. Liberibacter asiaticus
Abstract
“Candidatus Liberibacter asiaticus” (CLas) is an unculturable phloem-limited α-proteobacterium associated with citrus Huanglongbing (HLB; yellow shoot disease). HLB is currently threatening citrus production worldwide. Understanding the CLas biology is critical for HLB management. In this study, a novel single-stranded DNA (ssDNA) phage, CLasMV1, was identified in a CLas strain GDHZ11 from Guangdong Province of China through a metagenomic analysis. The CLasMV1 phage had a circular genome of 8,86

Bacteriomic Analyses of Asian Citrus Psyllid and Citrus Samples Infected With “Candidatus Liberibacter asiaticus” in Southern California and Huanglongbing Management Implications

Citation
Huang et al. (2021). Frontiers in Microbiology 12
Names
Ca. Carsonella ruddii Ca. Liberibacter asiaticus Ca. Profftella armatura
Abstract
Citrus Huanglongbing (HLB; yellow shoot disease) is associated with an unculturable α-proteobacterium “Candidatus Liberibacter asiaticus” (CLas). HLB was found in southern California in 2012, and the current management strategy is based on suppression of the Asian citrus psyllid (Diaphorina citri) that transmits CLas and removal of confirmed CLas-positive trees. Little is known about Asian citrus psyllid-associated bacteria and citrus-associated bacteria in the HLB system. Such information is im

Genome Sequence Resources of Two ‘Candidatus Liberibacter asiaticus’ Strains from Pakistan

Citation
Liu et al. (2020). Plant Disease 104 (8)
Names
Ca. Liberibacter asiaticus
Abstract
‘Candidatus Liberibacter asiaticus’ (CLas) is an unculturable, phloem-restricted αProteobacteria, associated with citrus Huanglongbing (HLB), which is one of the most destructive diseases in citrus production worldwide. Here, we present the genome sequences of CLas strains PA19 and PA20 from HLB-affected kinnow trees in Multan, Punjab Province, Pakistan. The CLas genomes of PA19 and PA20 comprise 1,224,156 bp and 1,226,225 bp, respectively, with an average GC content of 36.4%. Both harbored the