Abstract
Root colonization by Fusarium oxysporum (Fo) endophytes reduces wilt disease symptoms caused by pathogenic Fo strains. The endophytic strain Fo47, isolated from wilt suppressive soils, reduces Fusarium wilt in various crop species such as tomato, flax, and asparagus. How endophyte-mediated resistance (EMR) against Fusarium wilt is achieved is unclear. Here, nonpathogenic colonization by Fo47 and pathogenic colonization by Fo f.sp. lycopersici (Fol) strains were assessed in tomato roots and stems when inoculated separately or coinoculated. It is shown that Fo47 reduces Fol colonization in stems of both noncultivated and cultivated tomato species. Conversely, Fo47 colonization of coinoculated tomato stems was increased compared to single inoculated plants. Quantitative PCR of fungal colonization of roots (co)inoculated with Fo47 and/or Fol showed that pathogen colonization was drastically reduced when coinoculated with Fo47, compared with single inoculated roots. Endophytic colonization of tomato roots remained unchanged upon coinoculation with Fol. In conclusion, EMR against Fusarium wilt is correlated with a reduction of root and stem colonization by the pathogen. In addition, the endophyte may take advantage of the pathogen-induced suppression of plant defences as it colonizes tomato stems more extensively.
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Claims 6
Claim · model-written summary
Fo47 reduced Fol colonization in stems of cultivated and noncultivated tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Fo47e0
- Interactor
- Fole0pathogen
- Second interactor
- Fo47e0symbiont
- Outcome
- Fol colonization in stemse0
- Direction
- reducese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fo47 reduces Fol colonization in stems of both noncultivated and cultivated tomato species”
Claim · model-written summary
Fo47 colonization of tomato stems increased with coinoculation.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- coinoculatede0
- Interactor
- Fo47e0symbiont
- Outcome
- Fo47 colonization of coinoculated tomato stemse0
- Direction
- increasede0
- Comparator
- single inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fo47 colonization of coinoculated tomato stems was increased compared to single inoculated plants”
Claim · model-written summary
Fo47 coinoculation drastically reduced pathogen colonization of tomato roots.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- coinoculated with Fo47e0
- Interactor
- Fole2pathogen
- Second interactor
- Fo47e0symbiont
- Outcome
- pathogen colonizatione0
- Direction
- drastically reducede0
- Comparator
- single inoculated rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pathogen colonization was drastically reduced when coinoculated with Fo47, compared with single inoculated roots”
e1“tomato roots and stems”
e2“Fo f.sp. lycopersici (Fol) strains”
Claim · model-written summary
Endophytic colonization of tomato roots remained unchanged upon coinoculation with Fol.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- coinoculation with Fole0
- Interactor
- Fo47e1symbiont
- Second interactor
- Fole0pathogen
- Outcome
- Endophytic colonization of tomato rootse0
- Direction
- remained unchangede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Endophytic colonization of tomato roots remained unchanged upon coinoculation with Fol”
e1“endophytic strain Fo47”
Claim · model-written summary
Endophyte-mediated resistance to Fusarium wilt correlated with reduced pathogen colonization of tomato roots and stems.
- Taxon
- tomatoSolanum lycopersicume1
- Outcome
- root and stem colonization by the pathogene0
- Direction
- reductione0
- Qualifier
- EMR against Fusarium wilte0
FusariumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EMR against Fusarium wilt is correlated with a reduction of root and stem colonization by the pathogen”
e1“tomato roots and stems”
Claim · model-written summary
The authors suggest pathogen-induced suppression of tomato defences may permit greater Fo47 stem colonization.
- Taxon
- tomatoSolanum lycopersicume0
- Interactor
- Fo47e1symbiont
- Outcome
- colonizes tomato stems more extensivelye0
- Qualifier
- pathogen-induced suppression of plant defencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the endophyte may take advantage of the pathogen-induced suppression of plant defences as it colonizes tomato stems more extensively”
e1“endophytic strain Fo47”
The same questions in other papers
inoculation · disease · Solanum lycopersicum (tomato)Positive and negative results
135 papers in the same direction as this paper · 128 in the opposite direction · 2 reporting no difference from an alternative
- negative
- no effect
- negative
262 papers more in this group
See all 266 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.