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    Distribution and molecular diversity of whitefly species colonizing cassava in Kenya

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    Journal Article (873.5Kb)
    Date
    2021
    Author
    Munguti, F.
    Kilalo, D.
    Nyaboga, E.
    Wosula, E.N.
    Macharia, I.
    Mwango'mbe, A.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    The whitefly, Bemisia tabaci (Gennadium, Hemiptera) has been reported to transmit viruses that cause cassava mosaic disease (CMD) and cassava brown streak disease (CBSD) in many parts of sub-Saharan Africa (SSA). Currently, there is limited information on the distribution, species and haplotype composition of the whitefly populations colonizing cassava in Kenya. A study was conducted in the major cassava growing regions of Kenya to address this gap. Analyses of mitochondrial DNA cytochrome oxidase 1 (mtCO1) sequences revealed the presence of four distinct whitefly species: Bemisia tabaci, Bemisia afer, Aleurodicus dispersus and Paraleyrodes bondari in Kenya. The B. tabaci haplotypes were further resolved into SSA1, SSA2 and Indian Ocean (IO) putative species. The SSA1 population had three haplogroups of SSA1-SG1, SSA-SG2 and SSA1-SG3. Application of KASP genotyping grouped the Bemisia tabaci into two haplogroups namely sub-Saharan Africa East and Southern Africa (SSA-ESA) and sub-Saharan Africa East and Central Africa (SSA-ECA). The study presents the first report of P. bondari (Bondar’s nesting whitefly) on cassava in Kenya. Bemisia tabaci was widely distributed in all the major cassava growing regions in Kenya. The increased detection of different whitefly species on cassava and genetically diverse B. tabaci mitotypes indicates a significant influence on the dynamics of cassava virus epidemics in the field. The study highlights the need for continuous monitoring of invasive whitefly species population on cassava for timely application of management practices to reduce the impact of cassava viral diseases and prevent potential yield losses.
    https://dx.doi.org/10.3390/insects12100875
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7330
    IITA Authors ORCID
    EVERLYNE WOSULAhttps://orcid.org/0000-0001-5693-0889
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.3390/insects12100875
    Research Themes
    Biotech and Plant Breeding
    IITA Subjects
    Agronomy; Cassava; Climate Change; Food Security; Plant Breeding; Plant Health; Plant Production
    Agrovoc Terms
    Bemisia Tabaci; Genes; Paraleyrodes; Genotypes; Haplotypes; East Africa; Kenya
    Regions
    Africa; East Africa
    Countries
    Kenya
    Hubs
    Eastern Africa Hub
    Journals
    Insects
    Collections
    • Journal and Journal Articles4835
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