The Bacterial Wilt Reservoir Host Solanum dulcamara Shows Resistance to Ralstonia solanacearum Infection
Ralstonia solanacearum causes bacterial wilt, a devastating plant disease, responsible for serious losses on many crop plants. R. solanacearum phylotype II-B1 strains have caused important outbreaks in temperate regions, where the pathogen has been identified inside asymptomatic bittersweet (Solanum...
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Frontiers Media S.A.
2021
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oai:doaj.org-article:ffbd0d15506b4ad7b3ee373d664c28a82021-11-10T08:24:13ZThe Bacterial Wilt Reservoir Host Solanum dulcamara Shows Resistance to Ralstonia solanacearum Infection1664-462X10.3389/fpls.2021.755708https://doaj.org/article/ffbd0d15506b4ad7b3ee373d664c28a82021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fpls.2021.755708/fullhttps://doaj.org/toc/1664-462XRalstonia solanacearum causes bacterial wilt, a devastating plant disease, responsible for serious losses on many crop plants. R. solanacearum phylotype II-B1 strains have caused important outbreaks in temperate regions, where the pathogen has been identified inside asymptomatic bittersweet (Solanum dulcamara) plants near rivers and in potato fields. S. dulcamara is a perennial species described as a reservoir host where R. solanacearum can overwinter, but their interaction remains uncharacterised. In this study, we have systematically analysed R. solanacearum infection in S. dulcamara, dissecting the behaviour of this plant compared with susceptible hosts such as tomato cv. Marmande, for which the interaction is well described. Compared with susceptible tomatoes, S. dulcamara plants (i) show delayed symptomatology and bacterial progression, (ii) restrict bacterial movement inside and between xylem vessels, (iii) limit bacterial root colonisation, and (iv) show constitutively higher lignification in the stem. Taken together, these results demonstrate that S. dulcamara behaves as partially resistant to bacterial wilt, a property that is enhanced at lower temperatures. This study proves that tolerance (i.e., the capacity to reduce the negative effects of infection) is not required for a wild plant to act as a reservoir host. We propose that inherent resistance (impediment to colonisation) and a perennial habit enable bittersweet plants to behave as reservoirs for R. solanacearum.Pau SebastiàRoger de Pedro-JovéRoger de Pedro-JovéBenoit DaubechAnurag KashyapNúria S. CollMarc VallsMarc VallsFrontiers Media S.A.articlebacterial wiltRalstonia solanacearumdisease resistancereservoir host plantsvascular reinforcementsoverwinteringPlant cultureSB1-1110ENFrontiers in Plant Science, Vol 12 (2021) |
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| topic |
bacterial wilt Ralstonia solanacearum disease resistance reservoir host plants vascular reinforcements overwintering Plant culture SB1-1110 |
| spellingShingle |
bacterial wilt Ralstonia solanacearum disease resistance reservoir host plants vascular reinforcements overwintering Plant culture SB1-1110 Pau Sebastià Roger de Pedro-Jové Roger de Pedro-Jové Benoit Daubech Anurag Kashyap Núria S. Coll Marc Valls Marc Valls The Bacterial Wilt Reservoir Host Solanum dulcamara Shows Resistance to Ralstonia solanacearum Infection |
| description |
Ralstonia solanacearum causes bacterial wilt, a devastating plant disease, responsible for serious losses on many crop plants. R. solanacearum phylotype II-B1 strains have caused important outbreaks in temperate regions, where the pathogen has been identified inside asymptomatic bittersweet (Solanum dulcamara) plants near rivers and in potato fields. S. dulcamara is a perennial species described as a reservoir host where R. solanacearum can overwinter, but their interaction remains uncharacterised. In this study, we have systematically analysed R. solanacearum infection in S. dulcamara, dissecting the behaviour of this plant compared with susceptible hosts such as tomato cv. Marmande, for which the interaction is well described. Compared with susceptible tomatoes, S. dulcamara plants (i) show delayed symptomatology and bacterial progression, (ii) restrict bacterial movement inside and between xylem vessels, (iii) limit bacterial root colonisation, and (iv) show constitutively higher lignification in the stem. Taken together, these results demonstrate that S. dulcamara behaves as partially resistant to bacterial wilt, a property that is enhanced at lower temperatures. This study proves that tolerance (i.e., the capacity to reduce the negative effects of infection) is not required for a wild plant to act as a reservoir host. We propose that inherent resistance (impediment to colonisation) and a perennial habit enable bittersweet plants to behave as reservoirs for R. solanacearum. |
| format |
article |
| author |
Pau Sebastià Roger de Pedro-Jové Roger de Pedro-Jové Benoit Daubech Anurag Kashyap Núria S. Coll Marc Valls Marc Valls |
| author_facet |
Pau Sebastià Roger de Pedro-Jové Roger de Pedro-Jové Benoit Daubech Anurag Kashyap Núria S. Coll Marc Valls Marc Valls |
| author_sort |
Pau Sebastià |
| title |
The Bacterial Wilt Reservoir Host Solanum dulcamara Shows Resistance to Ralstonia solanacearum Infection |
| title_short |
The Bacterial Wilt Reservoir Host Solanum dulcamara Shows Resistance to Ralstonia solanacearum Infection |
| title_full |
The Bacterial Wilt Reservoir Host Solanum dulcamara Shows Resistance to Ralstonia solanacearum Infection |
| title_fullStr |
The Bacterial Wilt Reservoir Host Solanum dulcamara Shows Resistance to Ralstonia solanacearum Infection |
| title_full_unstemmed |
The Bacterial Wilt Reservoir Host Solanum dulcamara Shows Resistance to Ralstonia solanacearum Infection |
| title_sort |
bacterial wilt reservoir host solanum dulcamara shows resistance to ralstonia solanacearum infection |
| publisher |
Frontiers Media S.A. |
| publishDate |
2021 |
| url |
https://doaj.org/article/ffbd0d15506b4ad7b3ee373d664c28a8 |
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