Verticillium wilt of potato in southwestern Ontario and survival of<i>Verticillium albo-atrum</i>and<i>V. dahliae</i>in field soil

McKeen, C. D.; Thorpe, H. J.

doi:10.1080/07060668109501401

Cited by 16 publications

(8 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…P. pénétrons alone has caused losses of up to 73% in microplot experiments (20,21). In other potato growing regions with similar climates, losses due to early dying have ranged from 15 to 50% under normal conditions (4,18,26,29). The causal pathogens can be successfully eradicated from soils by fumigation with Telone®, chloropicrin, Vapam®, and other chemical sterilants (26,29,32).…”

mentioning

confidence: 98%

Soil solarization to controlVerticillium dahliaeandPratylenchus penetronson potatoes in central Ontario

Lazarovits¹,

Hawke²,

Tomlin³

et al. 1991

Canadian Journal of Plant Pathology

View full text Add to dashboard Cite

mentioning

confidence: 98%

Soil solarization to controlVerticillium dahliaeandPratylenchus penetronson potatoes in central Ontario

Lazarovits¹,

Hawke²,

Tomlin³

et al. 1991

Canadian Journal of Plant Pathology

View full text Add to dashboard Cite

“…Confirmation of the specific pathogens which cause potato diseases has been done in various potato growing regions of Canada (e.g. Banville 1989, Celetti & Platt 1987, James & MacKenzie 1972, McKeen & Thorpe 1981, Zimmer & Russell 1981, Studies on fungal infection processes and on seed treatments with fungicides have been carried out to address these disease problems (Busch & Edgington 1967, Platt 1989.…”

Section: Soil-borne Diseasesmentioning

confidence: 99%

The role of plant pathology research in the Canadian potato industry

Boer

1994

Canadian Journal of Plant Pathology

View full text Add to dashboard Cite

“…Previous studies have shown that when infected stems are buried in field soil, V. albo-atrum mycelium has low saprophytic abiilty and thus limited growth potential under these conditions (Sewell, 1959;Keinath & Millar. 1986), McKeen & Thorpe (1981) found that warm temperatures increased the level of competitive soil microbes, resulting in more rapid reduction of the V. alboatrum population. Fluctuations in soil moisture have been shown to alter population levels of microbial antagonists which could influence pathogen survival, A (', albo-atrum isolate from New York survived for only 4 months at 2rC when soil moisture was adjusted to -3 0 bars (Keinath & Millar, 1986), At a soil matric potential of 0 5 bars, the southern California isolate continued to survive at 21 C for over 18 months, showing no decrease in viability or virulence after 4 months.…”

Section: Characterization Studiesmentioning

confidence: 99%

Characterization and persistence of Verticillium albo‐atrum isolated from alfalfa growing in high temperature regions of southern California

Howell

Erwin

1995

Plant Pathology

View full text Add to dashboard Cite

Verticillium albo‐atrum isolated from alfalfa (lucerne) (Medicago sativa) growing at high air temperatures in southern California desert regions was compared with isolates from cooler, more favourable climates in Europe and the northern USA by determination of colony morphology, temperature effects on radial growth on agar, virulence on a resistant (NK‐89786) and susceptible (Moapa‐69) alfalfa cultivar, and by isozyme electrophoresis. Isolates from Europe, northern USA and southern California produced different colony morphologies on lactose yeast prune agar. Southern California isolates incubated at 30°C on agar produced significantly (P = 005) greater colony diameters than isolates from northern USA and Europe after 20 days. The virulence of isolates from southern California and northern USA was equally severe on alfalfa, while the virulence of European isolates was comparatively less severe. Alfalfa isolates of V. albo‐atrum from southern California had similar isozyme banding patterns to alfalfa isolates from Europe and northern USA, suggesting a common origin. However, differences in morphology, virulence and temperature relations indicate that isolates may have adapted to local environmental conditions. V. albo‐atrum from southern California was tested for its persistence in alfalfa debris at high temperatures over time, and for its ability to infect other crops and weeds. The fungus persisted over a 32‐month period in baled alfalfa hay exposed to air temperatures as high as 40°C during the summer months. Alfalfa stem pieces infected with V. albo‐atrum were buried in sterile soil or in non‐sterile field soil, or held without soil and incubated at 20, 24, 30, 35 and 41°C. Regrowth continued for up to 16 months at 30°C and for 3 months at 35°C from a small percentage of stem pieces buried in field soil. Regrowth continued for up to 16 months at 41°C from a small percentage of stems stored without soil. V. albo‐atrum was reisolated from all nine inoculated weed species, with three of these exhibiting foliar symptoms of Verticillium wilt. Ten of the inoculated crop species harboured V. albo‐atrum and four showed symptoms.

show abstract

Verticillium wilt of potato in southwestern Ontario and survival ofVerticillium albo-atrumandV. dahliaein field soil

Cited by 16 publications

References 19 publications

Soil solarization to controlVerticillium dahliaeandPratylenchus penetronson potatoes in central Ontario

Soil solarization to controlVerticillium dahliaeandPratylenchus penetronson potatoes in central Ontario

The role of plant pathology research in the Canadian potato industry

Characterization and persistence of Verticillium albo‐atrum isolated from alfalfa growing in high temperature regions of southern California

Contact Info

Product

Resources

About