Nematology 100 Lecture 12 Slides.

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Presentation transcript:

Nematology 100 Lecture 12 Slides

Aphelenchoides besseyi -rice Aphelenchoides fragariae -lily Aphelenchoides ritzemabosi -chrysanthemum

Aphelenchoides fragariae - Hosta Aphelenchoides sp. - Verbena Aphelenchoides fragariae - Carnation Aphelenchoides fragariae - Weigelia

Bursaphelenchus cocophilus - palm

Bursaphelenchus cocophilus – “little leaf” symptoms

insecticide traps with pheromone attractant Bursaphelenchus cocophilus – vector control

Bursaphelenchus xylophilus – pine wilt

horizontal gene transfer- HGT Bursaphelenchus xylophilus Aphelenchoidea fungus horizontal gene transfer- HGT cellulases – GHF45- glycoside hydrolase family the evolution of plant parasitism

Bursaphelenchus xylophilus – vector, Monochamus sp.

Searching for Bursaphelenchus spp.: – gray pine, El Dorado County - found mainly bacterial- and fungal-feeders

Signs of bark-beetle damage to Monterey Pine (Pinus radiata) Laimaphelenchus sp. is detected in samples of bark with exuding resin feeding on fungi or algae? or…?

feeding on fungi or algae? or…? From tree in foreground: Laimaphelenchus sp. – Monterey Pine, El Dorado County Laimaphelenchus sp. feeding on fungi or algae? or…?

Another aphelench: Seinura sp. – a predator