First Report of Cotton leafroll dwarf virus Associated with Cotton Blue Disease Symptoms in Alabama
2018; American Phytopathological Society; Volume: 103; Issue: 3 Linguagem: Inglês
10.1094/pdis-09-18-1550-pdn
ISSN1943-7692
AutoresS. Avelar, Drew Schrimsher, Kathy Lawrence, Judith K. Brown,
Tópico(s)Plant and Fungal Interactions Research
ResumoHomePlant DiseaseVol. 103, No. 3First Report of Cotton leafroll dwarf virus Associated with Cotton Blue Disease Symptoms in Alabama PreviousNext DISEASE NOTES OPENOpen Access licenseFirst Report of Cotton leafroll dwarf virus Associated with Cotton Blue Disease Symptoms in AlabamaS. Avelar, D. W. Schrimsher, K. Lawrence, and J. K. BrownS. Avelarhttp://orcid.org/0000-0002-3507-9009School of Plant Sciences, University of Arizona, Tucson, AZ 85721; Search for more papers by this author, D. W. SchrimsherAGRI-AFC, Decatur, AL 35609; and Search for more papers by this author, K. Lawrencehttp://orcid.org/0000-0002-5358-2011Department of Entomology and Plant Pathology, Auburn University, AL, 36849Search for more papers by this author, and J. K. Brown†Corresponding author: J. K. Brown; E-mail: E-mail Address: jbrown@ag.arizona.eduSchool of Plant Sciences, University of Arizona, Tucson, AZ 85721; Search for more papers by this authorAffiliationsAuthors and Affiliations S. Avelar1 D. W. Schrimsher2 K. Lawrence3 J. K. Brown1 † 1School of Plant Sciences, University of Arizona, Tucson, AZ 85721; 2AGRI-AFC, Decatur, AL 35609; and 3Department of Entomology and Plant Pathology, Auburn University, AL, 36849 Published Online:21 Jan 2019https://doi.org/10.1094/PDIS-09-18-1550-PDNAboutSections ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmailWechat During 2017, virus-like symptoms were observed in cotton fields in six counties in coastal Alabama infested by the whitefly Bemisia tabaci (Genn.) and cotton aphid Aphis gossypii (Glover). Symptoms consisted of foliar distortion, curling, rolling, bluish-green discoloration, vein-clearing, shortened internodes that resulted in dwarfing of plants, and reduced boll set. Disease incidence ranged from 3 to 30% per field, resulting in approximately 560 kg/ha loss, and affecting 25% of the 50,585-ha cotton crop in Alabama, with a loss of approximately 50,000 bales valued at $19 million dollars. Leaves were collected from symptomatic cotton plants, Gossypium hirsutum L., in Barbour County, AL, during late August and mid-September 2017. Total DNA and RNA were purified and subjected to DNA and RNAseq Illumina Hi-Seq 2500 (paired-end reads, 150-bp) shotgun sequencing. The de novo-assembled DNA contigs yielded no match to viral sequences available in the GenBank database. However, one RNA de novo assembled contig (103 reads) of 1,143 bp (accession no. MK015625), located at nucleotide coordinates 3,830 to 4,972, was annotated as Cotton leafroll dwarf virus (CLRDV) “atypical isolate” from Argentina (KF359947), based on 97.1% similarity and 98% coverage (BLASTn, GenBank). The CLRDV belongs to the genus Polerovirus (family Luteoviridae), which are aphid-transmitted, positive-sense single-stranded RNA viruses with a genome size of approximately 5.8 kb (Distéfano et al. 2010). To verify the Illumina results, the polymerase chain reaction (PCR) primer pair AL674F-5′-CCGTAGCGGTCATCGTCTTT/AL1407R-5′-TAACCCTGACACAGTGGGGA was designed based on a region conserved in all six available CLRDV genome sequences (GenBank accession nos. GU167940, HQ827780, KF359946, KF359947, KF906260, and KF906261) and was used in parallel with the primers CLRDV3675F and Pol3982R (Sharman et al. 2015) for reverse transcription PCR amplification of total RNA purified from symptomatic cotton plants (n = 3). An amplicon of the expected size was obtained using the primers, AL674F/1407R and CLRDV3675F/Pol3982R, at 733 bp (accession no. MH883237) and 310 bp (accession no. MH883236) in size, respectively. Bidirectional Sanger sequencing confirmed CLRDV presence, based on the BLASTn score of 94 and 99% similarity for the AL674F/1407R and CLRDV3675F/Pol3982R amplicon sequence, having a closest match to CLRDV from South America (GU167940 and KF906261, respectively). Pairwise distance analysis (Muhire et al. 2014) of the CLRDV fragments from Alabama cotton plants with the analogous genome fragment from the six available CLRDV isolates from South America indicated 91.5 to 99.3% nt sequence identity, suggesting the U.S. isolate is closely related, but not identical, to previously reported CLRDV isolates. The CLRDV, endemic to Africa and/or Asia-Pacific (Ray et al. 2016), was introduced into Brazil and Argentina during 2005 and 2010, respectively (Corrêa et al. 2005; Distéfano et al. 2010). Although A. gossypii is the only known CLRDV vector, and it was prevalent in symptomatic cotton fields during 2017, aphid transmissibility of the Alabama isolate has not been verified. Whether the CLRDV becomes established and causes economic losses to the U.S. cotton crop remains to be determined. To our knowledge, this is the first detection of the exotic CLRDV in U.S. cotton plantings.References:Corrêa, R. L., et al. 2005. Arch. Virol. 150:1357. Crossref, ISI, Google ScholarDistéfano, A. J., et al. 2010. Arch. Virol. 155:1849. Crossref, ISI, Google ScholarMuhire, B. M., et al. 2014. PLoS One 9:e108277. Crossref, ISI, Google ScholarRay, J. D., et al. 2016. Australas. Plant Dis. Notes 11:29. Crossref, ISI, Google ScholarSharman, M., et al. 2015. Australas. Plant Dis. Notes. 10:24. Crossref, ISI, Google ScholarFunding: Funding was provided by Cotton Incorporated.DetailsFiguresLiterature CitedRelated Vol. 103, No. 3 March 2019SubscribeISSN:0191-2917e-ISSN:1943-7692 Metrics Article History Issue Date: 6 Mar 2019Published: 21 Jan 2019First Look: 10 Oct 2018Accepted: 5 Oct 2018 Pages: 592-592 Information© 2019 The American Phytopathological SocietyFundingCotton IncorporatedCited byImidacloprid‐resistant Aphis gossypii populations are more common in cotton‐dominated landscapes29 November 2022 | Pest Management Science, Vol. 79, No. 3A novel and efficient method for identifying cotton leafroll dwarf virus infection in upland cotton ( Gossypium hirsutum )31 January 2023 | Plant Breeding, Vol. 26First Report of Tomato Yellow Leaf Curl Virus Infecting Upland Cotton (Gossypium hirsutum) in Alabama, U.S.A.Autumn McLaughlin, Brianna Heilsnis, Jenny Koebernick, Kassie Conner, and Alana L. 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