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N-Terminal polyhedrin sequences and occluded Baculovirus evolution

G F Rohrmann, M N Pearson, T J Bailey

    Journal of Molecular Evolution
    |January 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

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    This study constructed a baculovirus phylogenetic tree using occlusion body protein sequences. Lepidopteran nuclear polyhedrosis viruses (NPVs) are most closely related, suggesting ancient co-evolution with insects.

    Area of Science:

    • Virology
    • Molecular Evolution
    • Insect Pathology

    Background:

    • Baculoviruses are double-stranded DNA viruses that infect insects.
    • Understanding baculovirus phylogeny is crucial for insect-virus co-evolutionary studies.
    • Occlusion body proteins play a key role in baculovirus infection and survival.

    Purpose of the Study:

    • To construct a phylogenetic tree of occluded baculoviruses.
    • To investigate the evolutionary relationships of baculoviruses based on polyhedrin N-terminal amino acid sequences.
    • To compare molecular evolution data with antigenic properties of occlusion body proteins.

    Main Methods:

    • Phylogenetic analysis using N-terminal amino acid sequences of occlusion body proteins from six baculoviruses.
    • Antigenic comparisons of polyhedrin using solid-phase radioimmune assays.

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  • Inclusion of viruses from Lepidoptera, Hymenoptera, and Diptera orders.

    • Main Results:

    • A phylogenetic tree revealed lepidopteran NPVs as the most closely related group.
    • The evolutionary order of relatedness was determined: N. sertifer NPV, P. brassicae granulosis virus, and T. paludosa NPV.
    • Antigenic comparisons supported the molecular evolution-based phylogenetic findings.

    Conclusions:

    • Baculoviruses exhibit ancient evolutionary associations with insects.
    • The data suggest baculoviruses and insects have co-evolved over long periods.
    • Phylogenetic analysis of occlusion body proteins provides insights into baculovirus diversity and evolution.