Pathogenicity and Relative Abundance of <i>Dickeya</i> and <i>Pectobacterium</i> Species in Switzerland: An Epidemiological Dichotomy
<i>Pectobacterium</i> and <i>Dickeya</i> species are the causal agents of blackleg and soft rot diseases in potatoes. The main pathogenic species identified so far on potatoes are <i>Dickeya dianthicola</i>, <i>Dickeya solani</i>, <i>Pectobacteri...
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MDPI AG
2021-10-01
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| Series: | Microorganisms |
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| Online Access: | https://www.mdpi.com/2076-2607/9/11/2270 |
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| author | Patrice de Werra Christophe Debonneville Isabelle Kellenberger Brice Dupuis |
| author_facet | Patrice de Werra Christophe Debonneville Isabelle Kellenberger Brice Dupuis |
| author_sort | Patrice de Werra |
| collection | DOAJ |
| description | <i>Pectobacterium</i> and <i>Dickeya</i> species are the causal agents of blackleg and soft rot diseases in potatoes. The main pathogenic species identified so far on potatoes are <i>Dickeya dianthicola</i>, <i>Dickeya solani</i>, <i>Pectobacterium atrosepticum</i>, <i>Pectobacterium brasiliense</i>, <i>Pectobacterium carotovorum</i>, and <i>Pectobacterium parmentieri</i>. Ten years ago, the most prevalent Soft Rot Pectobacteriaceae in Europe were the <i>Dickeya</i> species, <i>P. atrosepticum</i> and <i>P. carotovorum</i>, with some variations among countries. Since then, a drastic increase in the abundance of <i>P. brasiliense</i> has been observed in most European countries. This shift is difficult to explain without comparing the pathogenicity of all <i>Dickeya</i> and <i>Pectobacterium</i> species. The pathogenicity of all the above-mentioned bacterial species was assessed in field trials and in vitro tuber slice trials in Switzerland. Two isolates of each species were inoculated by soaking tubers of cv. Desiree in a suspension of 10<sup>5</sup> CFU/mL, before planting in the field. For all trials, the <i>Dickeya</i> species were the most virulent ones, but long-term strain surveys performed in Switzerland indicate that <i>P. brasiliense</i> is currently the most frequent species detected. Our results show that the pathogenicity of the species is not the main factor explaining the high prevalence of <i>P. brasiliense</i> and <i>P. parmentieri</i> in the Swiss potato fields. |
| first_indexed | 2024-03-10T05:15:38Z |
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| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-10T05:15:38Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Microorganisms |
| spelling | doaj.art-42df5905b02746d1a26b747f628dd3602023-11-23T00:28:52ZengMDPI AGMicroorganisms2076-26072021-10-01911227010.3390/microorganisms9112270Pathogenicity and Relative Abundance of <i>Dickeya</i> and <i>Pectobacterium</i> Species in Switzerland: An Epidemiological DichotomyPatrice de Werra0Christophe Debonneville1Isabelle Kellenberger2Brice Dupuis3Plants and Plant Products, Varieties and Production Techniques, Agroscope, 1260 Nyon, SwitzerlandPlant Protection, Virology, Bacteriology and Phytoplasmology, Agroscope, 1260 Nyon, SwitzerlandPlant Protection, Virology, Bacteriology and Phytoplasmology, Agroscope, 1260 Nyon, SwitzerlandPlants and Plant Products, Varieties and Production Techniques, Agroscope, 1260 Nyon, Switzerland<i>Pectobacterium</i> and <i>Dickeya</i> species are the causal agents of blackleg and soft rot diseases in potatoes. The main pathogenic species identified so far on potatoes are <i>Dickeya dianthicola</i>, <i>Dickeya solani</i>, <i>Pectobacterium atrosepticum</i>, <i>Pectobacterium brasiliense</i>, <i>Pectobacterium carotovorum</i>, and <i>Pectobacterium parmentieri</i>. Ten years ago, the most prevalent Soft Rot Pectobacteriaceae in Europe were the <i>Dickeya</i> species, <i>P. atrosepticum</i> and <i>P. carotovorum</i>, with some variations among countries. Since then, a drastic increase in the abundance of <i>P. brasiliense</i> has been observed in most European countries. This shift is difficult to explain without comparing the pathogenicity of all <i>Dickeya</i> and <i>Pectobacterium</i> species. The pathogenicity of all the above-mentioned bacterial species was assessed in field trials and in vitro tuber slice trials in Switzerland. Two isolates of each species were inoculated by soaking tubers of cv. Desiree in a suspension of 10<sup>5</sup> CFU/mL, before planting in the field. For all trials, the <i>Dickeya</i> species were the most virulent ones, but long-term strain surveys performed in Switzerland indicate that <i>P. brasiliense</i> is currently the most frequent species detected. Our results show that the pathogenicity of the species is not the main factor explaining the high prevalence of <i>P. brasiliense</i> and <i>P. parmentieri</i> in the Swiss potato fields.https://www.mdpi.com/2076-2607/9/11/2270potatoblacklegSoft Rot Pectobacteriaceaepathogenicity |
| spellingShingle | Patrice de Werra Christophe Debonneville Isabelle Kellenberger Brice Dupuis Pathogenicity and Relative Abundance of <i>Dickeya</i> and <i>Pectobacterium</i> Species in Switzerland: An Epidemiological Dichotomy Microorganisms potato blackleg Soft Rot Pectobacteriaceae pathogenicity |
| title | Pathogenicity and Relative Abundance of <i>Dickeya</i> and <i>Pectobacterium</i> Species in Switzerland: An Epidemiological Dichotomy |
| title_full | Pathogenicity and Relative Abundance of <i>Dickeya</i> and <i>Pectobacterium</i> Species in Switzerland: An Epidemiological Dichotomy |
| title_fullStr | Pathogenicity and Relative Abundance of <i>Dickeya</i> and <i>Pectobacterium</i> Species in Switzerland: An Epidemiological Dichotomy |
| title_full_unstemmed | Pathogenicity and Relative Abundance of <i>Dickeya</i> and <i>Pectobacterium</i> Species in Switzerland: An Epidemiological Dichotomy |
| title_short | Pathogenicity and Relative Abundance of <i>Dickeya</i> and <i>Pectobacterium</i> Species in Switzerland: An Epidemiological Dichotomy |
| title_sort | pathogenicity and relative abundance of i dickeya i and i pectobacterium i species in switzerland an epidemiological dichotomy |
| topic | potato blackleg Soft Rot Pectobacteriaceae pathogenicity |
| url | https://www.mdpi.com/2076-2607/9/11/2270 |
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