Longevity of Plant Pathogens in Dry Agricultural Seeds during 30 Years of Storage
Plant diseases may survive and be spread by infected seeds. In this study we monitored the longevity of 14 seed-borne pathogens in 9 crop species commonly grown in the Nordic countries, in addition to a sample of sclerotia of Sclerotinia sclerotiorum. The data from the first 30 years of a 100-year s...
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ftpubmed:oai:pubmedcentral.nih.gov:8539852 2023-05-15T17:57:58+02:00 Longevity of Plant Pathogens in Dry Agricultural Seeds during 30 Years of Storage Brodal, Guro Asdal, Åsmund 2021-10-19 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8539852/ http://www.ncbi.nlm.nih.gov/pubmed/34683496 https://doi.org/10.3390/microorganisms9102175 en eng MDPI http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8539852/ http://www.ncbi.nlm.nih.gov/pubmed/34683496 http://dx.doi.org/10.3390/microorganisms9102175 © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). CC-BY Microorganisms Communication Text 2021 ftpubmed https://doi.org/10.3390/microorganisms9102175 2021-10-31T00:44:58Z Plant diseases may survive and be spread by infected seeds. In this study we monitored the longevity of 14 seed-borne pathogens in 9 crop species commonly grown in the Nordic countries, in addition to a sample of sclerotia of Sclerotinia sclerotiorum. The data from the first 30 years of a 100-year seed storage experiment located in a natural −3.5 °C environment (permafrost) in Svalbard, Norway, are presented. To date, the pathogens, tested by traditional seed health testing methods (freezing blotter, agar plates, growing on tests), have survived. Linear regression analyses showed that the seed infection percentages of Drechslera dictyoides in meadow fescue, Drechslera phlei in timothy, and Septoria nodorum in wheat were significantly reduced compared to the percentages at the start of the experiment (from 63% to 34%, from 70% to 65%, and from 15% to 1%, respectively), and that Phoma betae in beet had increased significantly (from 43% to 56%). No trends in the infection percentage were observed over the years in Drechslera spp. in barley (fluctuating between 30% and 64%) or in Alternaria brassicicola in cabbage (fluctuating between 82% and 99%), nor in pathogens with low seed infection percentages at the start of the experiment. A major part of the stored sclerotia was viable after 30 years. To avoid the spread of seed-borne diseases, it is recommended that gene banks implement routines that avoid the use of infected seeds. Text permafrost Svalbard PubMed Central (PMC) Norway Svalbard Microorganisms 9 10 2175 |
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English |
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Communication |
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Communication Brodal, Guro Asdal, Åsmund Longevity of Plant Pathogens in Dry Agricultural Seeds during 30 Years of Storage |
topic_facet |
Communication |
description |
Plant diseases may survive and be spread by infected seeds. In this study we monitored the longevity of 14 seed-borne pathogens in 9 crop species commonly grown in the Nordic countries, in addition to a sample of sclerotia of Sclerotinia sclerotiorum. The data from the first 30 years of a 100-year seed storage experiment located in a natural −3.5 °C environment (permafrost) in Svalbard, Norway, are presented. To date, the pathogens, tested by traditional seed health testing methods (freezing blotter, agar plates, growing on tests), have survived. Linear regression analyses showed that the seed infection percentages of Drechslera dictyoides in meadow fescue, Drechslera phlei in timothy, and Septoria nodorum in wheat were significantly reduced compared to the percentages at the start of the experiment (from 63% to 34%, from 70% to 65%, and from 15% to 1%, respectively), and that Phoma betae in beet had increased significantly (from 43% to 56%). No trends in the infection percentage were observed over the years in Drechslera spp. in barley (fluctuating between 30% and 64%) or in Alternaria brassicicola in cabbage (fluctuating between 82% and 99%), nor in pathogens with low seed infection percentages at the start of the experiment. A major part of the stored sclerotia was viable after 30 years. To avoid the spread of seed-borne diseases, it is recommended that gene banks implement routines that avoid the use of infected seeds. |
format |
Text |
author |
Brodal, Guro Asdal, Åsmund |
author_facet |
Brodal, Guro Asdal, Åsmund |
author_sort |
Brodal, Guro |
title |
Longevity of Plant Pathogens in Dry Agricultural Seeds during 30 Years of Storage |
title_short |
Longevity of Plant Pathogens in Dry Agricultural Seeds during 30 Years of Storage |
title_full |
Longevity of Plant Pathogens in Dry Agricultural Seeds during 30 Years of Storage |
title_fullStr |
Longevity of Plant Pathogens in Dry Agricultural Seeds during 30 Years of Storage |
title_full_unstemmed |
Longevity of Plant Pathogens in Dry Agricultural Seeds during 30 Years of Storage |
title_sort |
longevity of plant pathogens in dry agricultural seeds during 30 years of storage |
publisher |
MDPI |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8539852/ http://www.ncbi.nlm.nih.gov/pubmed/34683496 https://doi.org/10.3390/microorganisms9102175 |
geographic |
Norway Svalbard |
geographic_facet |
Norway Svalbard |
genre |
permafrost Svalbard |
genre_facet |
permafrost Svalbard |
op_source |
Microorganisms |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8539852/ http://www.ncbi.nlm.nih.gov/pubmed/34683496 http://dx.doi.org/10.3390/microorganisms9102175 |
op_rights |
© 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
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CC-BY |
op_doi |
https://doi.org/10.3390/microorganisms9102175 |
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Microorganisms |
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9 |
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10 |
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2175 |
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