AI Article Synopsis
- Diaphorina citri, a psyllid, spreads the pathogen 'Candidatus Liberibacter asiaticus', causing serious citrus disease (huanglongbing), and this study looks at the genetic diversity of its populations across Asia and Florida using specific genes.
- *AMOVA analysis indicates distinct genetic differences between populations in East/South-East Asia versus those in Pakistan and Florida, with the P-endosymbiont showing more geographical structure than D. citri and its other endosymbiont.
- *The study suggests that managing the pest could benefit from understanding the genetic diversity of D. citri and its endosymbionts, particularly with evidence of multiple psyllid introductions in China.*
Article Abstract
Background: Diaphorina citri is the vector of 'Candidatus Liberibacter asiaticus', the most widespread pathogen associated huanglongbing, the most serious disease of citrus. To enhance our understanding of the distribution and origin of the psyllid, we investigated the genetic diversity and population structures of 24 populations in Asia and one from Florida based on the mtCOI gene. Simultaneously, genetic diversity and population structures of the primary endosymbiont (P-endosymbiont) 'Candidatus Carsonella ruddii' and secondary endosymbiont (S-endosymbiont) 'Candidatus Profftella armatura' of D. citri were determined with the housekeeping genes.
Result: AMOVA analysis indicated that populations of D. citri and its endosymbionts in east and south-east Asia were genetically distinct from populations in Pakistan and Florida. Furthermore, P-endosymbiont populations displayed a strong geographical structure across east and south-east Asia, while low genetic diversity indicated the absence of genetic structure among the populations of D. citri and its S-endosymbiont across these regions.
Conclusion: The 'Ca. C. ruddii' is more diverse and structured than the D. citri and the 'Ca. P. armatura' across east and south-east Asia. Multiple introductions of the psyllid have occurred in China. Management application for controlling the pest is proposed based on the genetic information of D. citri and its endosymbionts. © 2017 Society of Chemical Industry.
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| http://dx.doi.org/10.1002/ps.4582 | DOI Listing |
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