Photochemical smog light O 2 + NO 3 O 3 + NO O 3 + NO + - PowerPoint PPT Presentation

Photochemical smog light O 2 + NO 3 O 3 + NO O 3 + NO + hydrocarbons PAN ( peroxyacetyl nitrate)

Ozone damage on Ponderosa pine

Crown gall - a disease caused by Agrobacterium tumefaciens

Bacterial scorch of red oak Bacterial scorch-like symptoms of California buckeye Images from Diseases of Trees and Shrubs Sinclair et al. 1989

Elm Yellows - caused by a “MLO” Bacteria in vessel Images from Diseases of Trees and Shrubs. Sinclair et al. 1989

Blackline disease of walnut, cause by Cherry leafroll virus Images from Diseases of Trees and Shrubs. Sinclair et al. 1989

Dodder - Cuscuta sp. a parasitic plant

Dodder - a close-up

Mistletoes

Mistletoes Leafy Mistletoe on oak Dwarf Mistletoe on pine

http://www.landandwater.com/features/vol49no6/vol49no6_1.php

Host and host- specificity of dwarf mistletoes From Biology and classification of Dwarf Mistletoe ( Arceuthobium ) Hawksworth & Wiens 1972

distribution of dwarf mistletoes in North America From Biology and classification of Dwarf Mistletoe ( Arceuthobium ) Hawksworth & Wiens 1972

From Biology and classification of Dwarf Mistletoe ( Arceuthobium ) Hawksworth & Wiens 1972

Seed being shot From Biology and classification of Dwarf Mistletoe ( Arceuthobium ) Hawksworth & Wiens 1972 flowers capsules

seeds and sliding

germinating seeds in X-sections

“Runner and sinkers” - endophyte morphology of dwarf mistletoe From Hawkswork and Weins http://www.rms.nau.edu/publications/ah_709/

Arceuthobium (Dwarf Mistletoe) whole plant view sugar pine Douglas-fir white fir limber pine

western white pine Brooms larch

large broom on ponderosa pine

Oyster mushroom ( Pleurotus ) fruiting on an old mistletoe canker of red fir

Phorodendron Berries of P. libocedri on incense cedar seedling on hardwood Deposition of seeds on true fir

Leafy mistletoe Phorodendron Phorodendron pauciflorum on white fir

Desert Mistletoes from Chile Tristerix aphyllus Tristerix veritcillatus www.ujf-grenoble.fr/JAL/chili/imag-FJ/paras.jpg&imgrefurl=http://www.ujf-grenoble.fr/JAL/ chili/plantes

Nuytsia floribunda Australian Christmas bush