Nematology 100

Lecture 12 Slides

Aphelenchoidesritzemabosi-chrysanthemum

Aphelenchoidesfragariae-lily

Aphelenchoidesbesseyi-rice

Aphelenchoides fragariae - Hosta Aphelenchoides sp. - Verbena

Aphelenchoides fragariae - Carnation Aphelenchoides fragariae - Weigelia

Bursaphelenchus cocophilus - palm

Bursaphelenchus cocophilus – “little leaf” symptoms

Bursaphelenchus cocophilus – vector control

insecticide traps with pheromone attractant

Bursaphelenchus xylophilus – pine wilt

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

Laimaphelenchus sp. is detectedin samples of bark with exudingresin

Signs of bark-beetle damage to Monterey Pine (Pinus radiata)

feeding on fungi or algae? or…?

From tree in foreground:Laimaphelenchus sp.– Monterey Pine, El Dorado County

feeding on fungi or algae? or…?

Laimaphelenchus sp.

Another aphelench:Seinura sp. – a predator