Abstract
Abstract Verticillium longisporum is a soilborne fungal plant pathogen, causing stem striping disease in oilseed rape. Currently, there are no effective fungicides available, so management focuses on plant breeding and crop rotation. Symptoms develop late in the growing season and they are often visible as bronze-colored stripes on the stem. Stem striping disease causes yield losses and premature death of infected plants. The objective of this study was to investigate the level of resistance in 14 autumn-sown hybrid oilseed rape cultivars, widely utilized in Sweden, to stem striping disease. These cultivars were infected with two different V. longisporum strains (S22 and S31) isolated from infested soils in Sweden, while one old spring-sown cultivar was used as a control of the infection. The results showed that none of these cultivars display complete resistance against this disease since considerable reduction in biomass was observed, with the S22 strain being significantly more virulent than S31. The cultivars ‘’Commodore’’, ‘’Credo’’, and ‘’Janosh’’ showed no biomass reduction upon infection with the S31 strain. Further, the cultivars ‘’Commodore’’ and ‘’Credo’’ showed the lowest biomass reduction, upon infection with the S22 strain, indicating a degree of resistance against this pathogen. ‘’LG Armada’’ exhibited significantly more dead leaves as compared to the other cultivars. In addition, root architecture assays revealed differences in morphological traits among the cultivars. A possible correlation was found between plant biomass and root architecture, where cultivars with larger total root lengths experienced less biomass reduction, suggesting that larger root systems result in more resistant cultivars, indicating that root morphology may affect the degree of V. longisporum infection.
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Claims 10
Claim · model-written summary
None of the tested cultivars was fully resistant; infection considerably reduced biomass.
- Taxon
- oilseed rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Material
- cultivarse0
- Interactor
- Verticillium longisporumVerticillium longisporume1pathogen
- Outcome
- reduction in biomasse0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“none of these cultivars display complete resistance against this disease since considerable reduction in biomass was observed, with the S22 strain being significantly more virulent than S31”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”
Claim · model-written summary
The S22 strain was significantly more virulent than S31.
- Taxon
- oilseed rapeBrassica napust0
- Interactor
- Verticillium longisporumVerticillium longisporume1pathogen
- Outcome
- S22 strain being significantly more virulente0
- Direction
- more virulente0
- Comparator
- S31e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“none of these cultivars display complete resistance against this disease since considerable reduction in biomass was observed, with the S22 strain being significantly more virulent than S31”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”
Claim · model-written summary
Commodore showed no biomass reduction following S31 infection.
- Taxon
- oilseed rapeBrassica napust0
- Material
- Commodoree0
- Interactor
- Verticillium longisporumVerticillium longisporume1pathogen
- Outcome
- no biomass reductione0
- Direction
- no biomass reductione0
- Qualifier
- S31 straine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivars ‘’Commodore’’, ‘’Credo’’, and ‘’Janosh’’ showed no biomass reduction upon infection with the S31 strain.”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”
Claim · model-written summary
Credo showed no biomass reduction following S31 infection.
- Taxon
- oilseed rapeBrassica napust0
- Material
- Credoe0
- Interactor
- Verticillium longisporumVerticillium longisporume1pathogen
- Outcome
- no biomass reductione0
- Direction
- no biomass reductione0
- Qualifier
- S31 straine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivars ‘’Commodore’’, ‘’Credo’’, and ‘’Janosh’’ showed no biomass reduction upon infection with the S31 strain.”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”
Claim · model-written summary
Janosh showed no biomass reduction following S31 infection.
- Taxon
- oilseed rapeBrassica napust0
- Material
- Janoshe0
- Interactor
- Verticillium longisporumVerticillium longisporume1pathogen
- Outcome
- no biomass reductione0
- Direction
- no biomass reductione0
- Qualifier
- S31 straine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivars ‘’Commodore’’, ‘’Credo’’, and ‘’Janosh’’ showed no biomass reduction upon infection with the S31 strain.”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”
Claim · model-written summary
Commodore had among the lowest biomass reductions under S22 infection.
- Taxon
- oilseed rapeBrassica napust0
- Material
- Commodoree0
- Interactor
- Verticillium longisporumVerticillium longisporume1pathogen
- Outcome
- biomass reductione0
- Direction
- loweste0
- Qualifier
- S22 straine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘’Commodore’’ and ‘’Credo’’ showed the lowest biomass reduction, upon infection with the S22 strain, indicating a degree of resistance against this pathogen.”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”
Claim · model-written summary
Credo had among the lowest biomass reductions under S22 infection.
- Taxon
- oilseed rapeBrassica napust0
- Material
- Credoe0
- Interactor
- Verticillium longisporumVerticillium longisporume1pathogen
- Outcome
- biomass reductione0
- Direction
- loweste0
- Qualifier
- S22 straine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘’Commodore’’ and ‘’Credo’’ showed the lowest biomass reduction, upon infection with the S22 strain, indicating a degree of resistance against this pathogen.”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”
Claim · model-written summary
LG Armada had significantly more dead leaves than the other cultivars.
- Taxon
- oilseed rapeBrassica napust0
- Material
- LG Armadae0
- Outcome
- dead leavese0
- Direction
- moree0
- Comparator
- other cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“‘’LG Armada’’ exhibited significantly more dead leaves as compared to the other cultivars.”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”
Claim · model-written summary
Root morphological traits differed among cultivars.
- Taxon
- oilseed rapeBrassica napust0
- Organ / stage
- roote0
- Outcome
- morphological traitse0
- Direction
- differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root architecture assays revealed differences in morphological traits among the cultivars.”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”
Claim · model-written summary
Cultivars with longer roots had less biomass reduction.
- Taxon
- oilseed rapeBrassica napust0
- Organ / stage
- roote0
- Outcome
- biomass reductione0
- Direction
- lesse0
- Qualifier
- larger total root lengthse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultivars with larger total root lengths experienced less biomass reduction”
t0“oilseed rape cultivars”
e1“Verticillium longisporum is a soilborne fungal plant pathogen”