Evidence suggesting interactions between immunodominant membrane protein Imp of Flavescence dorée phytoplasma and protein extracts from distantly related insect species.

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ID: 43066
2019
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Abstract
In this study, binding between the immunodominant membrane protein Imp of the 16SrV-D phytoplasma associated with Flavescence dorée disease (FD-Dp) and insect proteins of vectors and non-vectors of FD-Dp was tested.Six Auchenorrhyncha species, from distantly related groups were selected: Scaphoideus titanus, Euscelidius variegatus, Macrosteles quadripunctulatus, Zyginidia pullula (Cicadomorpha), Ricania speculum and Metcalfa pruinosa (Fulgoromorpha). The vector status of each species was retrieved from the literature or determined by transmission trials in this study. A His-tagged partial Imp protein and a rabbit polyclonal antibody were synthesized and used for Western and Far-Western dot Blot (FWdB) experiments. Total native and membrane proteins were extracted from entire bodies and organs (gut and salivary glands) of each insect species. FWdB showed a decreasing interaction intensities of Imp fusion protein with total proteins from entire bodies of S. titanus, E. variegatus (competent vectors) and M. quadripunctulatus (non-vector), while no interaction signal was detected with the other three species (non-vectors). A strong signal detected upon interaction of FD-D Imp and membrane proteins from guts of closely related insects supports the role of this organ as the first barrier to ensure successful transmission.Our results showed that specific Imp binding, correlated with vector status, is involved in interactions between FD-Dp and insect proteins.Integrating knowledge on host-pathogen protein-protein interactions and on insect phylogeny would help to identify the actual range of vectors of phytoplasma strains of economic importance.
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trivellone2019evidencejournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Trivellone, V;Ripamonti, M;Angelini, E;Filippin, L;Rossi, M;Marzachí, C;Galetto, L;
Journal Journal of applied microbiology
Year 2019
DOI
10.1111/jam.14445
URL
Keywords
imp grapevine yellows leafhopper planthopper transmission efficiency

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