Earlier occurrence and increased explanatory power of climate for the first incidence of potato late blight caused by Phytophthora infestans in Fennoscandia.
Late blight (caused by Phytophthora infestans) is a devastating potato disease that has been found to occur earlier in the season over the last decades in Fennoscandia. Up until now the reasons for this change have not been investigated. Possible explanations for this change are climate alterations,...
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ftdoajarticles:oai:doaj.org/article:9c6044b7967c485898cfb0ef38eb67a7 2023-05-15T16:11:43+02:00 Earlier occurrence and increased explanatory power of climate for the first incidence of potato late blight caused by Phytophthora infestans in Fennoscandia. Veiko Lehsten Lars Wiik Asko Hannukkala Erik Andreasson Deliang Chen Tinghai Ou Erland Liljeroth Åsa Lankinen Laura Grenville-Briggs 2017-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0177580 https://doaj.org/article/9c6044b7967c485898cfb0ef38eb67a7 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5448744?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0177580 https://doaj.org/article/9c6044b7967c485898cfb0ef38eb67a7 PLoS ONE, Vol 12, Iss 5, p e0177580 (2017) Medicine R Science Q article 2017 ftdoajarticles https://doi.org/10.1371/journal.pone.0177580 2022-12-31T06:12:09Z Late blight (caused by Phytophthora infestans) is a devastating potato disease that has been found to occur earlier in the season over the last decades in Fennoscandia. Up until now the reasons for this change have not been investigated. Possible explanations for this change are climate alterations, changes in potato production or changes in pathogen biology, such as increased fitness or changes in gene flow within P. infestans populations. The first incidence of late blight is of high economic importance since fungicidal applications should be typically applied two weeks before the first signs of late blight and are repeated on average once a week.We use field observations of first incidence of late blight in experimental potato fields from five sites in Sweden and Finland covering a total of 30 years and investigate whether the earlier incidence of late blight can be related to the climate.We linked the field data to meteorological data and found that the previous assumption, used in common late blight models, that the disease only develops at relative humidity levels above 90% had to be rejected. Rather than the typically assumed threshold relationship between late blight disease development and relative humidity we found a linear relationship. Our model furthermore showed two distinct responses of late blight to climate. At the beginning of the observation time (in Sweden until the early 90s and in Finland until the 2000s) the link between climate and first incidence was very weak. However, for the remainder of the time period the link was highly significant, indicating a change in the biological properties of the pathogen which could for example be a change in the dominating reproduction mode or a physiological change in the response of the pathogen to climate.The study shows that models used in decision support systems need to be checked and re-parametrized regularly to be able to capture changes in pathogen biology. While this study was performed with data from Fennoscandia this new pathogen biology and ... Article in Journal/Newspaper Fennoscandia Directory of Open Access Journals: DOAJ Articles PLOS ONE 12 5 e0177580 |
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Medicine R Science Q Veiko Lehsten Lars Wiik Asko Hannukkala Erik Andreasson Deliang Chen Tinghai Ou Erland Liljeroth Åsa Lankinen Laura Grenville-Briggs Earlier occurrence and increased explanatory power of climate for the first incidence of potato late blight caused by Phytophthora infestans in Fennoscandia. |
topic_facet |
Medicine R Science Q |
description |
Late blight (caused by Phytophthora infestans) is a devastating potato disease that has been found to occur earlier in the season over the last decades in Fennoscandia. Up until now the reasons for this change have not been investigated. Possible explanations for this change are climate alterations, changes in potato production or changes in pathogen biology, such as increased fitness or changes in gene flow within P. infestans populations. The first incidence of late blight is of high economic importance since fungicidal applications should be typically applied two weeks before the first signs of late blight and are repeated on average once a week.We use field observations of first incidence of late blight in experimental potato fields from five sites in Sweden and Finland covering a total of 30 years and investigate whether the earlier incidence of late blight can be related to the climate.We linked the field data to meteorological data and found that the previous assumption, used in common late blight models, that the disease only develops at relative humidity levels above 90% had to be rejected. Rather than the typically assumed threshold relationship between late blight disease development and relative humidity we found a linear relationship. Our model furthermore showed two distinct responses of late blight to climate. At the beginning of the observation time (in Sweden until the early 90s and in Finland until the 2000s) the link between climate and first incidence was very weak. However, for the remainder of the time period the link was highly significant, indicating a change in the biological properties of the pathogen which could for example be a change in the dominating reproduction mode or a physiological change in the response of the pathogen to climate.The study shows that models used in decision support systems need to be checked and re-parametrized regularly to be able to capture changes in pathogen biology. While this study was performed with data from Fennoscandia this new pathogen biology and ... |
format |
Article in Journal/Newspaper |
author |
Veiko Lehsten Lars Wiik Asko Hannukkala Erik Andreasson Deliang Chen Tinghai Ou Erland Liljeroth Åsa Lankinen Laura Grenville-Briggs |
author_facet |
Veiko Lehsten Lars Wiik Asko Hannukkala Erik Andreasson Deliang Chen Tinghai Ou Erland Liljeroth Åsa Lankinen Laura Grenville-Briggs |
author_sort |
Veiko Lehsten |
title |
Earlier occurrence and increased explanatory power of climate for the first incidence of potato late blight caused by Phytophthora infestans in Fennoscandia. |
title_short |
Earlier occurrence and increased explanatory power of climate for the first incidence of potato late blight caused by Phytophthora infestans in Fennoscandia. |
title_full |
Earlier occurrence and increased explanatory power of climate for the first incidence of potato late blight caused by Phytophthora infestans in Fennoscandia. |
title_fullStr |
Earlier occurrence and increased explanatory power of climate for the first incidence of potato late blight caused by Phytophthora infestans in Fennoscandia. |
title_full_unstemmed |
Earlier occurrence and increased explanatory power of climate for the first incidence of potato late blight caused by Phytophthora infestans in Fennoscandia. |
title_sort |
earlier occurrence and increased explanatory power of climate for the first incidence of potato late blight caused by phytophthora infestans in fennoscandia. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2017 |
url |
https://doi.org/10.1371/journal.pone.0177580 https://doaj.org/article/9c6044b7967c485898cfb0ef38eb67a7 |
genre |
Fennoscandia |
genre_facet |
Fennoscandia |
op_source |
PLoS ONE, Vol 12, Iss 5, p e0177580 (2017) |
op_relation |
http://europepmc.org/articles/PMC5448744?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0177580 https://doaj.org/article/9c6044b7967c485898cfb0ef38eb67a7 |
op_doi |
https://doi.org/10.1371/journal.pone.0177580 |
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PLOS ONE |
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12 |
container_issue |
5 |
container_start_page |
e0177580 |
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1765996879296856064 |