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The presence of Phytophthora infestans in the rhizosphere of a wild Solanum species may contribute to off-season survival and pathogenicity

Ramesh, Vetukuri and Masini, Laura and McDougal, Rebecca and Panda, Preeti and De Zinger, Levine and Brus-Szkalej, Maja and Lankinen, Åsa and Grenville-Briggs Didymus, Laura (2020). The presence of Phytophthora infestans in the rhizosphere of a wild Solanum species may contribute to off-season survival and pathogenicity. Applied Soil Ecology. 148 , 103475
[Research article]

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Abstract

We evaluated oomycete presence and abundance in the rhizosphere of wild perennial Solarium species to investigate the presence of plant pathogenic or mycoparasitic species. Furthermore, we investigated whether these plant species could function as hosts, or associated plants, for off-season survival of economically important pathogens. We collected soil samples in Sweden from Solarium dulcamara and as a control from Vitis vinifera over all four seasons of a year, and in New Zealand from Solarium nigrum and Solarium laciniatum in the summer. Species identification, confirmed by ITS and Cox2 sequencing, and root infection assays on the crop plant Solarium tuberosum and on S. dulcamara, suggested the presence of mainly Pythiales species. In Sweden, we also found evidence for the presence of Phytophthora infestans, the causal agent of potato late blight, in the rhizosphere of S. dulcamara. These Ph. infestans isolates had no negative effects on root growth of S. dulcamara in Sweden, but were more pathogenic on potato leaves than a common lab strain. Oomycete diversity measures indicated a high similarly between seasons and countries. In conclusion, our study suggests a previously unknown overwintering strategy for the pathogen Ph. infestans, indicating a possible influence of the wild species S. dulcamara on the epidemiology of potato late blight in Sweden.

Authors/Creators:Ramesh, Vetukuri and Masini, Laura and McDougal, Rebecca and Panda, Preeti and De Zinger, Levine and Brus-Szkalej, Maja and Lankinen, Åsa and Grenville-Briggs Didymus, Laura
Title:The presence of Phytophthora infestans in the rhizosphere of a wild Solanum species may contribute to off-season survival and pathogenicity
Series Name/Journal:Applied Soil Ecology
Year of publishing :2020
Volume:148
Article number:103475
Number of Pages:11
Publisher:ELSEVIER
ISSN:0929-1393
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Soil microbiome, Pythiales, Late blight, Biodiversity, Solanum dulcamara, Phylogeny, Overwintering
URN:NBN:urn:nbn:se:slu:epsilon-p-104333
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-104333
Additional ID:
Type of IDID
DOI10.1016/j.apsoil.2019.103475
Web of Science (WoS)000508826300001
ID Code:22677
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:01 Mar 2021 09:03
Metadata Last Modified:01 Mar 2021 09:11

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