Occurrence of botrytis leaf blight, anthracnose leaf spot, and white blister rust on <i>Wasabia japonica</i> in British Columbia

MacDonald, Jesse Lance; Punja, Zamir K.

doi:10.1080/07060661.2017.1304021

Cited by 4 publications

(1 citation statement)

References 23 publications

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“…In 2018, 44 plant samples were collected from which 12 potential fungal pathogens, as well as one oomycete, two bacterial pathogens, and one virus were identified. Several diseases previously reported on wasabi were isolated over the two survey years and confirmed (Table 1) (Rodríguez & Punja 2007MacDonald & Punja 2016;Park et al 2016;Punja et al 2016;Betz & Punja 2018). Moderate to severe levels of powdery mildew infection were recorded at half of the locations surveyed (Betz & Punja 2018).…”

Section: Results and Commentsmentioning

confidence: 57%

Canadian Plant Disease Survey 2019 Volume 99: Disease Highlights 2018

2019

Canadian Journal of Plant Pathology

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The British Columbia Ministry of Agriculture (BCAGRI) Plant Health Laboratory provides diagnoses of diseases caused by fungi, bacteria, viruses, plant parasitic nematodes and insect pests of agricultural crops grown in British Columbia. Between January 1 and November 30, 2018, the laboratory received 921 samples including Christmas trees, field crops, greenhouse vegetable and floriculture crops, forest nursery seedlings, herbaceous and woody ornamentals, small fruits, tree fruits, nuts and specialty crops for diagnosis. No significantly new or unusually high level of any disease was detected in the samples. METHODS:The BCAGRI Plant Health Laboratory provides diagnoses for diseases caused by fungi, bacteria, viruses, plant parasitic nematodes, and insect pests of agricultural crops grown in British Columbia. Samples were submitted to the laboratory by ministry staff, growers, agri-businesses, munici-palities and Master Gardeners. Diagnoses were accomplished by visual and microscopic examination, culturing onto artificial media, biochemical identification of bacteria using BIOLOG®, serological testing of viruses, fungi and bacteria with micro-well and membrane-based enzymelinked immunosorbent assay (ELISA). Molecular tech-niques (polymerase chain reaction (PCR) (conventional and/or real time) were used for some species-specific diagnoses. Electron microscopic examination was performed on samples with unknown virus-like symptoms. Some specimens were referred to other laboratories for identification or confirmation of the diagnosis. RESULTS AND COMMENTS: Overall in 2018, British Columbia had a wet spring followed by a long dry summer. The wet weather in the spring supported bacterial blights on woody ornamentals, tree fruits and berry crops. Fire blight incidence was higher in tree fruit and woody ornamental crops. Fruit rots and postharvest rots were much lower than normal due to dry weather in late summer. Diseases and their causal agents diagnosed on crop samples submitted to the laboratory are presented in the following Tables 1-11 organized by crop category. Diagnoses not listed include: abiotic symptoms such as nutritional stress, pH imbalance, water stress, drought stress, physiological response to adverse growing conditions, genetic abnormalities, environmental and chemical stresses including herbicide damage, fruit abortion due to lack of pollination, insect-related injury and damage where no conclusive causal factor was identified.

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Section: Results and Commentsmentioning

confidence: 57%