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

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 c...

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Veröffentlicht in:Plant disease. - 1997. - 108(2024), 6 vom: 04. Juni, Seite 1455-1460
1. Verfasser: De Leon, Victoria S (VerfasserIn)
Weitere Verfasser: Chen, Jianchi, McCollum, Greg, Park, Jong-Won, Louzada, Eliezer S, Setamou, Mamoudou, Kunta, Madhurababu
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article CLas phages citrus next generation sequencing prophage ‘Candidatus Liberibacter asiaticus’ strain diversity
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520 |a 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 environments: citrus leaf, citrus root, and Asian citrus psyllid (ACP), the vector of CLas. Regardless of the different habitats and time span, more than 80% of CLas strains consistently had both Type 1 and Type 2 prophages, the same prophage type profile as in CLas strains from Florida but different to those reported in California and China. Further studies were performed on prophage type diversity. Analyses on Type 1-specific PCR amplicon sequences (encoding an endolysin protein) revealed the presence of two groups: Type 1-A, clustered around prophage SC1 originating from Florida, and Type 1-B, clustered with prophage P-SGCA5-1 originating in California. Type 1-B strains were mostly from ACP of nearby citrus orchards. On the other hand, analyses on Type 2-specific PCR amplicon sequences (encoding a putative hypothetical protein) showed a single group clustering around prophage SC2 originated from Florida, although a different Type 2 prophage has been reported in California. The presence of two distinct Type 1 prophage groups suggested the possibility of two different CLas introductions in southern Texas. The results from this study provide an initial baseline of information on genomic and population diversity of CLas in Texas 
650 4 |a Journal Article 
650 4 |a CLas phages 
650 4 |a citrus 
650 4 |a next generation sequencing 
650 4 |a prophage 
650 4 |a ‘Candidatus Liberibacter asiaticus’ strain diversity 
700 1 |a Chen, Jianchi  |e verfasserin  |4 aut 
700 1 |a McCollum, Greg  |e verfasserin  |4 aut 
700 1 |a Park, Jong-Won  |e verfasserin  |4 aut 
700 1 |a Louzada, Eliezer S  |e verfasserin  |4 aut 
700 1 |a Setamou, Mamoudou  |e verfasserin  |4 aut 
700 1 |a Kunta, Madhurababu  |e verfasserin  |4 aut 
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