Abstract
Citrus greening disease or huanglongbing (HLB) caused by Candidatus Liberibacter asiaticus (CLas) limits citrus production worldwide. CLas is transmitted by the Asian citrus psyllid (ACP), Diaphorina citri (Hemiptera: Psyllidae) in a persistent-propagative manner. Understanding the molecular interaction between CLas and ACP and interrupting the interrelationship can provide an alternative to insecticides for managing citrus greening disease. Transcriptome analysis of ACP in response to CLas showed differential expression of 3911 genes (2196 upregulated, and 1715 downregulated) including the key genes of ACP involved in cytoskeleton synthesis and nutrition-related proteins, such as vitellogenins, extensin, laminin, tropomyosin, troponin C, and flightin. Majority of the differentially expressed genes were categorized under molecular functions followed by cellular components and biological processes. KEGG pathway analysis showed differential regulation of carbohydrate, nucleotide, and energy metabolic pathways, the endocytotic pathway, and the defense-related pathways. Differential regulation of genes associated with the key pathways might favour CLas to become systemic and propagate in its insect vector. The study provides an understanding of genes involved in circulation of CLas in ACP. The candidate genes involved in key physiological processes and CLas transmission by ACP would be potential targets for sustainable management of ACP and CLas.
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Data availability
The datasets generated during the current study are available in the NCBI with BioProject ID PRJNA634436.
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Acknowledgements
The sequencing service provided by Nucleome Informatics Pvt. Ltd. Hyderabad, India is thankfully acknowledged. We also acknowledged the funding received from IARI and DBT. The funding bodies played no role in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript.
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Indian Agricultural Research Institute, New Delhi. Department of Biotechnology, Government of India.
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AG and VKB conceived and designed the research. AG prepared biological samples. DJ and RR carried out the wet lab experiments. AG, VKS analyzed data. SKS provided HLB isolate. NC reviewed the results. DJ and VKS wrote draft manuscript. VKB and AG edited final manuscript. All authors read and approved the manuscript.
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Jaiswal, D., Sidharthan, V.K., Sharma, S.K. et al. Candidatus Liberibacter asiaticus manipulates the expression of vitellogenin, cytoskeleton, and endocytotic pathway-related genes to become circulative in its vector, Diaphorina citri (Hemiptera: Psyllidae). 3 Biotech 11, 88 (2021). https://doi.org/10.1007/s13205-021-02641-x
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DOI: https://doi.org/10.1007/s13205-021-02641-x