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Genetic diversity and occurrence of the F129L substitutions among isolates of Alternaria solani in south-eastern Sweden

Odilbekov, Firuz and Edin, Eva and Gustavsson, Larisa and Persson Hovmalm, Helena and Liljeroth, Erland (2016). Genetic diversity and occurrence of the F129L substitutions among isolates of Alternaria solani in south-eastern Sweden. Hereditas. 153, 1-10
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Official URL: http://dx.doi.org/10.1186/s41065-016-0014-0

Abstract

Background: Early blight, caused by the fungus Alternaria solani, occurs on potato mainly in the south-eastern part of Sweden, but also in other parts of the country. The aim of this study was to investigate the genetic diversity of A. solani populations from different potato growing regions in south-eastern Sweden using AFLP marker analysis. In addition, the cultured isolates were examined for substitutions in the gene encoding cytochrome b, associated with loss of sensitivity against QoI fungicides.Results: Nei's gene diversity index for the Swedish populations of A. solani revealed a gene diversity of up to 0.20. Also genetic differentiation was observed among populations of A. solani from different locations in south-eastern Sweden. The mitochondrial genotype of the isolates of A. solani was determined and both known genotypes, GI (genotype 1) and GII (genotype 2), were found among the isolates. The occurrence of the F129L substitution associated with a loss of sensitivity to strobilurins was confirmed among the GII isolates. In vitro conidial germination tests verified that isolates containing the F129L substitution had reduced sensitivity to azoxystrobin and, at a lower extent, to pyraclostrobin.Conclusions: Genetic diversity was relatively high among isolates of A. solani in south-eastern part of Sweden. F129L substitutions, leading to reduced sensitivity to strobilurins, have been established in field populations, which may have implications for the future efficacy of QoI fungicides.

Authors/Creators:Odilbekov, Firuz and Edin, Eva and Gustavsson, Larisa and Persson Hovmalm, Helena and Liljeroth, Erland
Title:Genetic diversity and occurrence of the F129L substitutions among isolates of Alternaria solani in south-eastern Sweden
Series/Journal:Hereditas (1601-5223)
Year of publishing :2016
Volume:153
Page range:1-10
Number of Pages:10
Publisher:BioMed Central
Associated Programs and Other Stakeholders:Z - SLU - Libray > Odla mera
ISSN:1601-5223
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:H Protection of plants and stored products > H01 Protection of plants - General aspects
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:AFLP, Early blight, Potato, Strobilurin, Sensitivity
URN:NBN:urn:nbn:se:slu:epsilon-e-3924
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3924
Additional ID:
Type of IDID
Web of Science (WoS)000383771200001
ID Code:14019
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
(LTJ, LTV) > Department of Plant Protection Biology
(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:03 Feb 2017 12:31
Metadata Last Modified:04 Feb 2017 05:03

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