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Stuehler DS, Hunter WB, Carrillo-Tarazona Y, Espitia H, Cicero JM, Bell T, Mann HR, Clarke SKV, Paris TM, Metz JL, D'Elia T, Qureshi JA, Cano LM. Wild lime psyllid Leuronota fagarae Burckhardt (Hemiptera: Psylloidea) picorna-like virus full genome annotation and classification. J Invertebr Pathol 2023; 201:107995. [PMID: 37748676 DOI: 10.1016/j.jip.2023.107995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 09/27/2023]
Abstract
Picorna-like viruses of the order Picornavirales are a poorly defined group of positive-sense, single-stranded RNA viruses that include numerous pathogens known to infect plants, animals, and insects. A new picorna-like viral species was isolated from the wild lime psyllid (WLP), Leuronota fagarae, in the state of Florida, USA, and labelled: Leuronota fagarae picorna-like virus isolate FL (LfPLV-FL). The virus was found to have homology to a picorna-like virus identified in the Asian Citrus Psyllid (ACP), Diaphorina citri, collected in the state of Florida. Computational analysis of RNA extracts from WLP adult heads identified a 10,006-nucleotide sequence encoding a 2,942 amino acid polyprotein with similar functional domain structure to polyproteins of both Dicistroviridae and Iflaviridae. Sequence comparisons of nucleic acid and amino acid translations of the conserved RNA-dependent RNA polymerase, along with the entire N-terminal nonstructural coding region, provided insight into an evolutionary relationship of LfPLV-FL to insect-infecting iflaviruses. Viruses belonging to the family Iflaviridae encode a polyprotein of around 3000 amino acids in length that is processed post-translationally to produce components necessary for replication. The classification of a novel picorna-like virus in L. fagarae, with evolutionary characteristics similar to picorna-like viruses infecting Bactericera cockerelli and D. citri, provides an opportunity to examine virus host specificity, as well as identify critical components of the virus' genome required for successful transmission, infection, and replication. This bioinformatic classification allows for further insight into a novel virus species, and aids in the research of a closely related virus of the invasive psyllid, D. citri, a major pest of Floridian citriculture. The potential use of viral pathogens as expression vectors to manage the spread D. citri is an area that requires additional research; however, it may bring forth an effective control strategy to reduce the transmission of Candidatus Liberibacter asiaticus (CLas), the causative agent of Huanglongbing (HLB).
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Affiliation(s)
- Douglas S Stuehler
- ORISE Participant, DOE/USDA, ARS, Fort Pierce, FL 34945, USA; USDA, ARS, 2001 South Rock Road, Fort Pierce, FL 34945, USA.
| | - Wayne B Hunter
- USDA, ARS, 2001 South Rock Road, Fort Pierce, FL 34945, USA.
| | - Yisel Carrillo-Tarazona
- University of Florida, IFAS, Department of Plant Pathology, Indian River Research and Education Center, Fort Pierce, FL 34945, USA.
| | - Hector Espitia
- University of Florida, IFAS, Department of Plant Pathology, Indian River Research and Education Center, Fort Pierce, FL 34945, USA.
| | - Joseph M Cicero
- University of Florida, IFAS, Department of Plant Pathology, Indian River Research and Education Center, Fort Pierce, FL 34945, USA
| | - Tracey Bell
- Indian River State College, Fort Pierce, FL 34949, USA.
| | - Hannah R Mann
- Indian River State College, Fort Pierce, FL 34949, USA
| | | | - Thomson M Paris
- ORISE Participant, DOE/USDA, ARS, Fort Pierce, FL 34945, USA; USDA, ARS, 2001 South Rock Road, Fort Pierce, FL 34945, USA.
| | - Jackie L Metz
- University of Florida, IFAS, Department of Plant Pathology, Indian River Research and Education Center, Fort Pierce, FL 34945, USA.
| | - Tom D'Elia
- Department of Biology, Indian River State College, Fort Pierce, FL 34949, USA.
| | - Jawwad A Qureshi
- University of Florida, Southwest Florida Research and Education Center (SWFREC), 2685 SR 29 North Immokalee, FL 34142, USA.
| | - Liliana M Cano
- University of Florida, IFAS, Department of Plant Pathology, Indian River Research and Education Center, Fort Pierce, FL 34945, USA.
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Mann M, Saha S, Cicero JM, Pitino M, Moulton K, Hunter WB, Cano LM, Mueller LA, Heck M. Lessons learned about the biology and genomics of Diaphorina citri infection with "Candidatus Liberibacter asiaticus" by integrating new and archived organ-specific transcriptome data. Gigascience 2022; 11:6575386. [PMID: 35482489 PMCID: PMC9049105 DOI: 10.1093/gigascience/giac035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/16/2022] [Accepted: 03/16/2022] [Indexed: 12/14/2022] Open
Abstract
Background Huanglongbing, a devastating disease of citrus, is caused by the obligate, intracellular bacterium “Candidatus Liberibacter asiaticus” (CLas). CLas is transmitted by Diaphorina citri, the Asian citrus psyllid. Development of transmission-blocking strategies to manage huanglongbing relies on knowledge of CLas and D. citri interactions at the molecular level. Prior transcriptome analyses of D. citri point to changes in psyllid biology due to CLas infection but have been hampered by incomplete versions of the D. citri genome, proper host plant controls, and/or a lack of a uniform data analysis approach. In this work, we present lessons learned from a quantitative transcriptome analysis of excised heads, salivary glands, midguts, and bacteriomes from CLas-positive and CLas-negative D. citri using the chromosomal length D. citri genome assembly. Results Each organ had a unique transcriptome profile and response to CLas infection. Though most psyllids were infected with the bacterium, CLas-derived transcripts were not detected in all organs. By analyzing the midgut dataset using both the Diaci_v1.1 and v3.0 D. citri genomes, we showed that improved genome assembly led to significant and quantifiable differences in RNA-sequencing data interpretation. Conclusions Our results support the hypothesis that future transcriptome studies on circulative, vector-borne pathogens should be conducted at the tissue-specific level using complete, chromosomal-length genome assemblies for the most accurate understanding of pathogen-induced changes in vector gene expression.
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Affiliation(s)
- Marina Mann
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Surya Saha
- Boyce Thompson Institute, Ithaca, NY 14853, USA
| | - Joseph M Cicero
- School of Plant Sciences, University of Arizona, Tucson, AZ 85721, USA
| | | | - Kathy Moulton
- U.S. Horticultural Research Laboratory, Unit of Subtropical Insects and Horticulture, USDA Agricultural Research Service, Fort Pierce, FL 34945, USA
| | - Wayne B Hunter
- U.S. Horticultural Research Laboratory, Unit of Subtropical Insects and Horticulture, USDA Agricultural Research Service, Fort Pierce, FL 34945, USA
| | - Liliana M Cano
- Indian River Research and Education Center, University of Florida, Fort Pierce, FL 34945, USA
| | | | - Michelle Heck
- Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA.,Boyce Thompson Institute, Ithaca, NY 14853, USA.,Emerging Pests and Pathogens Research Unit, Robert W. Holley Center, USDA Agricultural Research Service, Ithaca, NY 14853, USA
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