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    Severity of citrus tristeza virus isolates from Texas

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    S05ArtHerronSeverityInthomNodev.pdf (186.3Kb)
    Date
    2005
    Author
    Herron, C.
    Mirkov, T.
    Solis-Gracia, N.
    Kahlke, C.
    Skaria, M.
    Graca, J. da
    Type
    Journal Article
    Metadata
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    Abstract/Description
    Citrus tristeza virus (CTV) isolates collected from the Lower Rio Grande Valley in south Texas and east Texas were characterized using citrus indicators and molecular methods. The citrus indicators were Mexican lime (Citrus aurantifolia), sour orange (C. aurantium), sweet orange (C. sinensis) grafted to sour orange, Duncan grapefruit (C. × paradisi), and Madam Vinous sweet orange, with some CTV isolates additionally indexed using the Texas commercial grapefruit cvs. Rio Red and Star Ruby, and Marrs and N-33 sweet orange. Severity ratings used 11 biotype groups or cumulative mean relative indices. Molecular characterization was carried out using poly- and monoclonal antibodies, seven strain-specific probes and single-stranded conformational polymorphism, and all were based on the CTV major coat protein or gene. All Texas CTV isolates produced vein clearing symptoms on inoculated Mexican lime plants. Over half of the CTV isolates tested were placed in biotype groups IX and X (causing decline of sweet orange on sour orange, seedling yellows on sour orange and grapefruit seedlings, and stem pitting of grapefruit or sweet orange), and one isolate was in biotype I (mild).
    https://dx.doi.org/10.1094/PD-89-0575
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/3374
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1094/PD-89-0575
    IITA Subjects
    Bioscience; Biofortification; Crop Systems; Genetic Improvement; Handling, Transport, Storage And Protection Of Agricultural Products; Pests Of Plants; Plant Breeding; Livelihoods; Plant Genetic Resources
    Agrovoc Terms
    Citrus Tristeza Virus; Citrus Indicators; Citrus Aurantifolia; Molecular; Biotype Group; Seedlings
    Regions
    Acp; Africa; North America; West Africa
    Countries
    United States; Nigeria
    Collections
    • Journal and Journal Articles4842
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