Distribution and abundance of Aphanomyces euteiches in agricultural soils : effect of land use type, soil properties, and crop management practices

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dc.contributor.author

Karppinen, Erin M.

Payment, Josephine

Chatterton, Syama

Bainard, Jillian D.

Hubbard, Michelle

Gan, Yantai

Bainard, Luke D.

dc.date.accessioned

2023-04-17T18:11:21Z

dc.date.available

2023-04-17T18:11:21Z

dc.date.issued

2019-12-23

dc.description.abstract - en

Aphanomyces euteiches is a soil-borne pathogen that causes root rot in susceptible pulse crops. Although widespread across Canada, A. euteiches was not reported in Saskatchewan until 2012. The distribution of this pathogen across the Canadian prairies is unknown and it is unclear whether it is native to the region. The objective of this study was to conduct a survey of A. euteiches across the major agricultural soils of Saskatchewan, Canada to determine its distribution and to assess the relative importance of factors related to its distribution and possible spread across the province. Soil samples were collected from lentil and pea fields and their associated roadside ditches, as well as from native and tame rangelands. Soil samples were analyzed using a quantitative polymerase chain reaction (qPCR) assay to detect and quantify the presence of A. euteiches. In addition, root rot severity was assessed on affected pea and lentil plants, and the physical and chemical properties of the soils were measured. A. euteiches was present across all land use (i.e., annual cropland, roadside ditches, and rangeland) and soil types in Saskatchewan. A. euteiches abundance was highest in samples collected from annually cropped fields. Within annual cropland, A. euteiches abundance was higher in pea fields than lentil fields. Soil moisture, total and organic carbon, and total nitrogen were positively correlated to A. euteiches abundance in field and roadside soils. Based on this survey, A. euteiches is wide-spread across all the major agricultural regions of Saskatchewan and is not limited to specific soil or land use types. The frequent detection of A. euteiches in native rangeland indicates it is likely native to Saskatchewan. The significant relationship between A. euteiches gene abundance and disease severity in pea fields indicates that the qPCR assay may be a useful indicator for predicting the potential for certain agricultural soils to cause A. euteiches root rot in pea crops.

dc.identifier.citation

Karppinen, E. M., Payment, J., Chatterton, S., Bainard, J. D., Hubbard, M., Gan, Y., & Bainard, L. D. (2020). Distribution and abundance of Aphanomyces euteiches in agricultural soils: effect of land use type, soil properties, and crop management practices. Applied Soil Ecology, 150. https://doi.org/10.1016/j.apsoil.2019.103470

dc.identifier.doi

https://doi.org/10.1016/j.apsoil.2019.103470

dc.identifier.issn

1873-0272

dc.identifier.uri

https://open-science.canada.ca/handle/123456789/194

dc.language.iso

en

dc.publisher - en

Elsevier

dc.publisher - fr

Elsevier

dc.rights.openaccesslevel - en

Green

dc.rights.openaccesslevel - fr

Vert

dc.subject - en

Agriculture

dc.subject - fr

Agriculture

dc.subject.en - en

Agriculture

dc.subject.fr - fr

Agriculture

dc.title - en

Distribution and abundance of Aphanomyces euteiches in agricultural soils : effect of land use type, soil properties, and crop management practices

dc.title.fosrctranslation - fr

Distribution and abundance of Aphanomyces euteiches in agricultural soils : effect of land use type, soil properties, and crop management practices

dc.type - en

Article

dc.type - fr

Article

local.article.journaltitle

Applied Soil Ecology

local.article.journalvolume

150

local.peerreview - en

Yes

local.peerreview - fr

Oui

local.requestdoi - en

No

local.requestdoi - fr

No

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