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Diseases - Root and Butt / Root and Stem Diseases

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Image Subject Name Scientific Name Description
5488367 Truncatella fungi Truncatella spp. Conidia on conidiophores (Infection secondary to Sphaeropsis)
5488368 Truncatella fungi Truncatella spp. Conidia (Infection secondary to Sphaeropsis)
5488373 Truncatella fungi Truncatella spp. Sphaeropsis infected stem invaded by Truncatella
5488372 Truncatella fungi Truncatella spp. Conidia
5488371 Truncatella fungi Truncatella spp. Vertical section of conidioma (Infection secondary to Sphaeropsis)
5488370 Truncatella fungi Truncatella spp. Vertical section of conidioma (Infection secondary to Sphaeropsis)
5488369 Truncatella fungi Truncatella spp. Vertical section of conidioma (Infection secondary to Sphaeropsis)
5488366 Truncatella fungi Truncatella spp. Conidia on conidiophores (Infection secondary to Sphaeropsis)
5485270 Monochaetia fungi Monochaetia spp. Black acervuli evident in Taphrina caerulescens lesions.
5485269 Monochaetia fungi Monochaetia spp. Black acervuli evident in Taphrina caerulescens lesions.
5485268 Monochaetia fungi Monochaetia spp. Taphrina infected leaf, host of Monochaetia.
5485267 Monochaetia fungi Monochaetia spp. Vertical section of acervulus.
5485266 Monochaetia fungi Monochaetia spp. Black acervuli in Taphrina caerulescens lesion.
5485265 Monochaetia fungi Monochaetia spp. Black acervuli in Taphrina caerulescens lesion.
5485264 Monochaetia fungi Monochaetia spp. Vertical section of acervulus showing conidia on conidiophores
5485263 Monochaetia fungi Monochaetia spp. Vertical section of acervulus showing conidia on conidiophores
5485262 Monochaetia fungi Monochaetia spp. Conidia
5485261 Monochaetia fungi Monochaetia spp. Conidia
1436062 crown gall Rhizobium radiobacter on roots
5408716 Phytophthora root and crown rots Phytophthora spp. Image shows samples of field soil (25 cm2) from Fraser fir production sites, flooded with 40 ml of distilled water. Rhododendron leaf disks were floated on the water surface as a bait for zoospores of Phytophthora spp.  Leaf disks are typically removed after 24 hours and plated on selective medium for detection of Phytophthora.
5335027 Leptographium root disease Leptographium procerum pales weevil chambers and black discoloration characteristic of L. procerum
5371812 Cylindrocladium root diseases Cylindrocladium spp.
5371813 Cylindrocladium root diseases Cylindrocladium spp.
5371811 Cylindrocladium root diseases Cylindrocladium spp.
5224015 crown gall Rhizobium radiobacter

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