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Citrus trees or fruits from outside of the country are inspected to ensure they are bacteria-free trees. Under the management program, the production of Xac (X. axonopodis pv. citri)-free nursery trees for exclusion of canker from orchard is also mandatory. Because the bacteria can be introduced from countries with endemic canker or canker ...
Compared above is a healthy tree and segment (left) to a tree infected and containing a canker. Apple canker, caused by the fungus Neonectria galligena formerly Nectria galligena. [2] Ash bacterial canker, now understood to be caused by the bacterium Pseudomonas savastanoi, rather than Pseudomonas syringae.
Bacterial diseases; Bacterial spot Xanthomonas euvesicatoria pv. citrumelo: Black pit (fruit) Pseudomonas syringae: Blast Pseudomonas syringae: Citrus canker: Xanthomonas citri pv. citri: Citrus variegated chlorosis Xylella fastidiosa: Huanglongbing = citrus greening Candidatus Liberibacter asiaticus. Candidatus L. africanus
Bacterial blast: Pseudomonas syringae [3] Bacterial canker: Pseudomonas syringae pv. syringae [2] Bacterial hyperplastic canker: Pseudomonas amygdali: Bacterial spot: Xanthomonas pruni (syn. X. campestris pv. pruni) Crown gall: Agrobacterium tumefaciens [1]
Brown rot blossom blight and fruit rot Monilinia fructicola Monilinia laxa. Cercospora leaf spot Cercospora circumscissa Cercospora rubrotincta. Ceratocystis canker Ceratocystis fimbriata. Constriction canker = Fusicoccum canker, Phomopsis shoot blight Phomopsis amygdali = Fusicoccum amygdali. Cytospora canker Leucostoma persoonii
Black rot, frogeye leafspot and canker Botryosphaeria obtusa Sphaeropsis malorum [anamorph] Blister canker = nailhead canker Biscogniauxia marginata = Nummularia discreta. Blue mold Penicillium spp. Penicillium expansum. Brooks fruit spot Mycosphaerella pomi Cylindrosporium pomi [anamorph] Brown rot blossom blight and spur infection Monilinia laxa
Strict hygiene practices used in orchards along with pruning in early spring and summer were proven to make the trees more resistant to P. syringae. Cauterizing cankers found on orchard trees can save the tree's life by stopping the infection from spreading. [31] Breeding plants for resistance is another somewhat effective way to avoid P. syringae.
Bacterial diseases; Bacterial black spot = bacterial canker Xanthomonas campestris pv. mangiferaeindicae: Bacterial fruit rot Pectobacterium carotovorum subsp. carotovorum = Erwinia carotovora subsp. carotovora. Erwinia herbicola. Crown gall hi Agrobacterium tumefaciens