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Complete Genome Sequence of Cotton Leafroll Dwarf Virus Isolated from Cotton in Texas, USA.

ABSTRACT: Cotton leafroll dwarf virus (CLRDV; genus, Polerovirus; family, Luteoviridae) was first described in Alabama. In this study, we present the complete genome (5,865 nucleotides) sequence of a CLRDV isolate (CS4) that was collected from cotton during the 2019 growing season in Texas.

SUBMITTER: Ali A

PROVIDER: S-EPMC7163032 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Complete Genome Sequence of Cotton Leafroll Dwarf Virus Isolated from Cotton in Texas, USA.

Ali Akhtar A Mokhtari Samira S

Microbiology resource announcements 20200416 16

Cotton leafroll dwarf virus (CLRDV; genus, Polerovirus; family, Luteoviridae) was first described in Alabama. In this study, we present the complete genome (5,865 nucleotides) sequence of a CLRDV isolate (CS4) that was collected from cotton during the 2019 growing season in Texas. ...[more]

PMID: 32299894

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Project description:TaxonomyCotton leafroll dwarf virus (CLRDV) is a member of the genus Polerovirus, family Solemoviridae. Geographical Distribution: CLRDV is present in most cotton-producing regions worldwide, prominently in North and South America.Physical propertiesThe virion is a nonenveloped icosahedron with T = 3 icosahedral lattice symmetry that has a diameter of 26-34 nm and comprises 180 molecules of the capsid protein. The CsCl buoyant density of the virion is 1.39-1.42 g/cm3 and S20w is 115-127S. Genome: CLRDV shares genomic features with other poleroviruses; its genome consists of monopartite, single-stranded, positive-sense RNA, is approximately 5.7-5.8 kb in length, and is composed of seven open reading frames (ORFs) with an intergenic region between ORF2 and ORF3a.TransmissionCLRDV is transmitted efficiently by the cotton aphid (Aphis gossypii Glover) in a circulative and nonpropagative manner. Host: CLRDV has a limited host range. Cotton is the primary host, and it has also been detected in different weeds in and around commercial cotton fields in Georgia, USA.SymptomsCotton plants infected early in the growth stage exhibit reddening or bronzing of foliage, maroon stems and petioles, and drooping. Plants infected in later growth stages exhibit intense green foliage with leaf rugosity, moderate to severe stunting, shortened internodes, and increased boll shedding/abortion, resulting in poor boll retention. These symptoms are variable and are probably influenced by the time of infection, plant growth stage, varieties, soil health, and geographical location. CLRDV is also often detected in symptomless plants.ControlVector management with the application of chemical insecticides is ineffective. Some host plant varieties grown in South America are resistant, but all varieties grown in the United States are susceptible. Integrated disease management strategies, including weed management and removal of volunteer stalks, could reduce the abundance of virus inoculum in the field.

Dataset Information

Complete Genome Sequence of Cotton Leafroll Dwarf Virus Isolated from Cotton in Texas, USA.

Publications

Complete Genome Sequence of <i>Cotton Leafroll Dwarf Virus</i> Isolated from Cotton in Texas, USA.

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