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Canadian journal of plant pathology
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Publication year rev
7983-2017
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2017 v.39 no.4
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- Author:
- Sheau-Fang Hwang; Stephen E. Strelkov; Hafiz U. Ahmed; Qixing Zhou; Heting Fu; Rudolph Fredua-Agyeman; George D. Turnbull
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 514-526
- ISSN:
- 1715-2992
- Subject:
- Brassica napus; DNA primers; Verticillium dahliae; Verticillium longisporum; Verticillium wilt; agar; canola; catechol oxidase; color; conidia; conidiophores; cultivars; enzyme activity; growth retardation; leaves; polymerase chain reaction; sclerotia; sequence analysis; surveys; vascular tissues; Alberta; Manitoba
- Abstract:
- ... In Canada, Verticillium wilt of canola (Brassica napus L.), caused by Verticillium longisporum, was first confirmed in Manitoba in 2014. Verticillium dahliae, however, has not been reported to cause this disease. In 2016, a field survey in Alberta revealed canola plants with vascular wilt symptoms. Symptomatic plants were collected and infected stem tissue was cultured on agar medium, with one iso ...
- DOI:
- 10.1080/07060661.2017.1375996
- https://doi.org/10.1080/07060661.2017.1375996
- Author:
- Yi-Xin Du; Niu-Niu Shi; Wen-Le Chen; Hong-Chun Ruan; Xiu-Juan Yang; Lin Gan; Yu-Li Dai; Fu-Ru Chen
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 527-532
- ISSN:
- 1715-2992
- Subject:
- Colletotrichum; Passiflora edulis; actin; anthracnose; color; disease incidence; fruits; genes; glyceraldehyde-3-phosphate dehydrogenase; internal transcribed spacers; leaves; passion fruits; pathogen identification; pathogenicity; sequence analysis; stems; transcription (genetics); tubulin; vines; China
- Abstract:
- ... Passion fruit (Passiflora edulis Sims.) has become an important commercial fruit with large-scale cultivation in China. A disease affecting the stems, fruits, leaves and tendrils was observed on passion fruit vines in Sanming, Fujian Province, China, in August 2015. The typical symptoms included lesions of oval to irregular shapes, brown to brownish black in colour, with sunken cavities. Acervuli ...
- DOI:
- 10.1080/07060661.2017.1367725
- https://doi.org/10.1080/07060661.2017.1367725
3. Impact of Fusarium graminearum on early-season soybean growth and seed yield under field conditions
- Author:
- David A. Marburger; Damon L. Smith; Shawn P. Conley
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 464-474
- ISSN:
- 1715-2992
- Subject:
- Fusarium graminearum; Glycine max; Triticum aestivum; Zea mays; corn; cultivars; field experimentation; fludioxonil; growers; growing season; mefenoxam; pathogens; seed treatment; seed yield; soybeans; wheat; Wisconsin
- Abstract:
- ... Fusarium graminearum is primarily regarded as an economically important pathogen on wheat (Triticum aestivum L.) and corn (Zea mays L.), but recently it has also been shown to be pathogenic to soybean [Glycine max L. (Merr.)]. However, little is known about its impact on soybean early-season growth and seed yield under field conditions. A field experiment was conducted near Arlington, WI during th ...
- DOI:
- 10.1080/07060661.2017.1378727
- https://doi.org/10.1080/07060661.2017.1378727
- Author:
- Brent D. McCallum; Pat Seto-Goh; Allen Xue
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 454-463
- ISSN:
- 1715-2992
- Subject:
- Puccinia recondita; breeding; cultivars; leaf rust; mature plants; phenotype; seedlings; virulence; wheat; Alberta; Manitoba; Ontario; Prince Edward Island; Quebec; Saskatchewan
- Abstract:
- ... Leaf rust collections were made across Canada in 2011 and 287 single-pustule isolates were tested for virulence on 16 standard differential lines and two additional lines containing Lr21 and LrCen, respectively. Of the 70 different virulence phenotypes found in Canada during 2011, the most common were TDBJ (12.5%), TDBG (10.5%) and MLDS (7.7%), which is similar to the findings from 2010. Three iso ...
- DOI:
- 10.1080/07060661.2017.1386715
- https://doi.org/10.1080/07060661.2017.1386715
- Author:
- Dustin E. MacLean; Reem Aboukhaddour; Van Anh Tran; Homa Askarian; Stephen E. Strelkov; T. Kelly Turkington; Hadley R. Kutcher
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 433-443
- ISSN:
- 1715-2992
- Subject:
- Pyrenophora tritici-repentis; fungi; germination; growers; leaf spot; pathogens; polymerase chain reaction; propiconazole; pyraclostrobin; races; spraying; wheat; Alberta; Saskatchewan
- Abstract:
- ... Tan spot, caused by Pyrenophora tritici-repentis (Ptr), is one of the most destructive leaf spot diseases of wheat in Canada. Several races of the fungus are known to occur. Wheat growers have adopted fungicides to manage tan spot; however, intensive spraying may lead to development of reduced sensitivity to fungicides in the pathogen. In this study, 62 Ptr isolates were collected from across Sask ...
- DOI:
- 10.1080/07060661.2017.1387178
- https://doi.org/10.1080/07060661.2017.1387178
- Author:
- Li Wang; Xiao-Bo Li; Hai-Cui Suo; Kang An; Huan-Min Luo; Xiao-Jin Liu
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 533-539
- ISSN:
- 1715-2992
- Subject:
- Bacillus amyloliquefaciens; bacteria; hosts; onions; pathogenicity; potatoes; tomatoes; tubers; China
- Abstract:
- ... Potato tubers exhibiting symptoms of soft rot were observed in a field in Baiyun District, Guangzhou, Guangdong Province, China, in March 2016. Bacteria were isolated from the diseased potato tubers. Using morphological and molecular (16S rDNA and gyrB) characterization and pathogenicity tests, a representative isolate of the bacterium was identified as Bacillus amyloliquefaciens. Inoculating the ...
- DOI:
- 10.1080/07060661.2017.1381994
- https://doi.org/10.1080/07060661.2017.1381994
- Author:
- Bruce D. Gossen; Travis J. Cranmer; Thomas V. Gludovacz; Mary Ruth Mcdonald
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 475-485
- ISSN:
- 1715-2992
- Subject:
- Brassica napus; cabbage; canola; clubroot; cole crops; cultivars; data collection; flowering; heat; heat sums; hosts; models; rain; soil water; soil-borne diseases; sowing date; spores; temperature; Ontario
- Abstract:
- ... Clubroot, caused by Plasmodiaphora brassicae, is an important soil-borne disease of canola (Brassica napus) and other brassica crops worldwide. Temperature and soil moisture are known to affect clubroot development. To understand the influence of weather on development of clubroot, replicated small-plot seeding date trials were conducted from 2011 to 2014 at the Muck Crops Research Station in sout ...
- DOI:
- 10.1080/07060661.2017.1369459
- https://doi.org/10.1080/07060661.2017.1369459
- Author:
- Benjamin Mimee; Brahim Soufiane; Nathalie Dauphinais; Guy Bélair
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 503-513
- ISSN:
- 1715-2992
- Subject:
- DNA; Globodera rostochiensis; cyst nematodes; eggs; fumigation; genotype; growers; heat treatment; methyl bromide; organobromine compounds; planting; potatoes; quantitative polymerase chain reaction; quarantine; reverse transcriptase polymerase chain reaction; soil; viability; Quebec
- Abstract:
- ... Potato cyst nematodes (PCN) – Globodera rostochiensis and G. pallida – cause significant yield losses on potato worldwide. One of the main challenges to PCN management is the ability of PCN to remain dormant in the soil for several decades. For that reason, many countries have strict quarantine regulations for PCN. These regulations, although expensive and restrictive for growers, are necessary to ...
- DOI:
- 10.1080/07060661.2017.1382574
- CHORUS:
- 10.1080/07060661.2017.1382574
- https://doi.org/10.1080/07060661.2017.1382574
- Author:
- Kiela B. Caudillo-Ruiz; Vijai Bhadauria; Sabine Banniza
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 422-432
- ISSN:
- 1715-2992
- Subject:
- Coriandrum sativum; Stemphylium; alfalfa; blight; caraway; conidia; crops; faba beans; fenugreek; genes; glyceraldehyde-3-phosphate dehydrogenase; hosts; internal transcribed spacers; lentils; morphometry; pathogens; peas; phylogeny; soybeans; transcription (genetics); Canada
- Abstract:
- ... Field isolates of Stemphylium spp. collected from lentil and nine other western Canadian crops were compared to the ex-type isolate of Stemphylium botryosum by morphology and by molecular phylogenetic analysis based on the internal transcribed spacer (ITS) and the glyceraldehyde-3-phosphate dehydrogenase gene regions. Sequence data of these genes for six other Stemphylium spp. obtained from GenBan ...
- DOI:
- 10.1080/07060661.2017.1378728
- https://doi.org/10.1080/07060661.2017.1378728
- Author:
- Becky Lyon; Kirk Broders
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 385-392
- ISSN:
- 1715-2992
- Subject:
- Puccinia striiformis f. tritici; climate change; crop production; disease outbreaks; disease severity; ecology; evolution; models; monitoring; overwintering; pathogens; races; risk; stripe rust; virulence; virulent strains; weather; wheat; Canada; Eastern United States
- Abstract:
- ... Stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most devastating diseases of wheat globally. Since 2000, the geographic footprint of Pst has increased in North America due to a combination of changing weather patterns and introductions of new and more virulent strains. Pst is endemic throughout North America, but the emergence of new virulent strains poses an increa ...
- DOI:
- 10.1080/07060661.2017.1368713
- https://doi.org/10.1080/07060661.2017.1368713
- Author:
- Karla Y. Leyva-Madrigal; Eduardo Sandoval-Castro; Carlos L. Calderón-Vázquez; Claudia P. Larralde-Corona; Ignacio E. Maldonado-Mendoza
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 486-496
- ISSN:
- 1715-2992
- Subject:
- Fusarium verticillioides; aggression; alleles; asexual reproduction; chemical control; corn; disease control; fungi; gene flow; genetic analysis; genetic variation; haplotypes; hyphae; mutation; mycotoxins; pathogenicity; pathogens; root rot; roots; seedlings; seeds; sexual reproduction; Mexico
- Abstract:
- ... The filamentous fungus Fusarium verticillioides is a widely distributed pathogen that causes ear, stalk and root rot of maize. This fungus also produces mycotoxins that accumulate in maize kernels. As chemical control has proven to be insufficient, new and effective disease control measures must be implemented. An improved understanding of the diversity of pathogen populations is thus crucial. Her ...
- DOI:
- 10.1080/07060661.2017.1378726
- https://doi.org/10.1080/07060661.2017.1378726
- Author:
- Mona Sorahinobar; Hassan Soltanloo; Vahid Niknam; Hassan Ebrahimzadeh; Babak Moradi; Naser Safaie; Mehrdad Behmanesh; Mohammad Bahram
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 444-453
- ISSN:
- 1715-2992
- Subject:
- Fusarium graminearum; Fusarium head blight; catalase; catechol oxidase; cultivars; cytochrome P-450; drug resistance; enzyme activity; gene expression; grain yield; hydrogen peroxide; malondialdehyde; mycotoxins; oxidative stress; peroxidase; phenylalanine ammonia-lyase; quantitative polymerase chain reaction; spikelets; superoxide dismutase; wheat
- Abstract:
- ... Fusarium graminearum, causing Fusarium head blight (FHB), is one of the most important diseases on cereals worldwide leading to a reduction in both grain yield and quality. Currently, there is limited knowledge about the physiological and molecular mechanisms involved in wheat resistance against F. graminearum mycotoxins. Crude culture extract of F. graminearum was used to determine the physiologi ...
- DOI:
- 10.1080/07060661.2017.1379442
- https://doi.org/10.1080/07060661.2017.1379442
- Author:
- Inga Zasada; Amy Peetz; Tom Forge
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 497-502
- ISSN:
- 1715-2992
- Subject:
- Bellis perennis; Calystegia sepium; Capsella bursa-pastoris; Cynodon dactylon; Echinochloa crus-galli; Epilobium angustifolium; Hypochaeris radicata; Persicaria lapathifolia; Pratylenchus crenatus; Senecio; Sonchus; Taraxacum officinale; Trifolium; Vaccinium; autumn; blueberries; dominant species; hosts; population density; root lesion nematodes; roots; soil; soil sampling; spring; weeds; Canada; United States
- Abstract:
- ... Blueberry (Vaccinium spp.) is a rapidly growing segment of the agricultural sectors in the Pacific North-west (PNW) of the USA and Canada. Plant-parasitic nematodes are commonly found in blueberry production fields, with root lesion nematodes (Pratylenchus species) reported as being widespread; however, the identity of these populations associated with blueberry roots has not been previously deter ...
- DOI:
- 10.1080/07060661.2017.1367724
- https://doi.org/10.1080/07060661.2017.1367724
- Author:
- Keiko Nabetani; Brandon Kirk Wood; Siva Sabaratnam
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 405-421
- ISSN:
- 1715-2992
- Subject:
- Diaporthe; Vaccinium corymbosum; agar; blight; blueberries; branches; bud set; conidia; developmental stages; dieback; germination; growing season; histology; leaf abscission; mycelium; pathogenicity; phenology; photoperiod; pycnidia; temperature; tissues; weather; British Columbia
- Abstract:
- ... Twig and blossom blight, and stem dieback, has become an impediment to highbush blueberry (Vaccinium corymbosum L.) production in British Columbia. Periodic assessment of disease symptoms and pathogenicity test confirmed Phomopsis vaccinii to be the major causal agent of the disease. Symptomatic tissues sampled at 7- to 10-day intervals in the 2014 and 2015 growing seasons were examined for presen ...
- DOI:
- 10.1080/07060661.2017.1375995
- https://doi.org/10.1080/07060661.2017.1375995
- Author:
- O. Carisse; M. L. Fall; C. Vincent
- Source:
- Canadian journal of plant pathology 2017 v.39 no.4 pp. 393-404
- ISSN:
- 1715-2992
- Subject:
- aggression; biodiversity; climate change; crop rotation; cultivars; disease control; ecosystem services; fertilizers; genetic improvement; insects; mechanization; natural enemies; natural selection; new crops; pathogens; perennials; pesticide resistance; pesticides; plant products; plant protection; vineyards; viticulture; weeds; Quebec
- Abstract:
- ... Biovigilance can be defined as the study of the unintentional effects of various factors on pest (insects, pathogens, and weeds) populations, biodiversity and ecological services. Biovigilance research allows for the detection of significant temporal and spatial trends that may be linked to agricultural practices, new plant protection products, cultivars grown, new crops, climate change, or emergi ...
- DOI:
- 10.1080/07060661.2017.1366368
- https://doi.org/10.1080/07060661.2017.1366368