Arbuscular mycorrhiza affects grapevine fanleaf virus transmission by the nematode vector Xiphinema index.

摘要: Abstract The soil-borne nepovirus Grapevine fanleaf virus (GFLV), causal agent of grapevine degeneration disease, spreads mainly via the nematode vector Xiphinema index. Since arbuscular mycorrhizal (AM) fungus Rhizophagus intraradices can induce local and systemic protection against X. index (Hao et al., 2012), therefore, objective present study was to investigate if AM may represent a means for limiting GFLV infection by reducing attack. Three-week-old or nonmycorrhizal rootstock SO4 (Vitis berlandieri × V. riparia) plants were inoculated with 10 100 viruliferous nematodes per plant under glasshouse conditions. Plants harvested 35 90 days after inoculation (DAIN), prior appearance symptoms, respectively. Both levels inhibited root growth at 90 DAIN, while presence colonization significantly decreased gall formation on roots both time points reduced reproduction in soil DAIN. not detected one-step reverse transcription PCR any DAIN inoculation. At plant, but absent from grapevine. It is suggested that inhibition proliferation penetration protect low abundance soils so contribute control these