Abstract
The phytohormone IAA (indol-3-acetic acid) was tested in vitro on growth of tomato wilt pathogen Fusarium oxysporum lycopersici. The hormone reduced spore germination, mycelial dry weight and protein content. Such reduction was matched with the elevation in the hormone concentration. The in vivo application of IAA to soil of the uninoculated plants (controls) improved growth and yielded longer shoot and root, particularly at low concentrations. Moreover, the hormone could prevent completely any chance for disease incidence by soil pathogens. Presence of IAA in soil of inoculated plants not only reduced the infection rate but also increased plant growth, causing that they appeared healthy and normal. Disease suppression in tomato plants, exerted by application of IAA, was achieved through either increasing plant growth, exerting a direct harmful effect on the target pathogen and/or inducing resistance in host tissue. The induced resistance was correlated with induction of certain secondary metabolites which may have a role in increasing tolerance in tomato plants to the pathogen.
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Claims 10
Claim · model-written summary
IAA reduced spore germination of the tomato wilt pathogen Fusarium oxysporum lycopersici in vitro.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- IAAe0
- Interactor
- Fusarium oxysporum lycopersici
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=60)
Fusarium oxysporume0pathogen - Outcome
- spore germinatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_(Fusarium_oxysporum_f.sp._batatas)_1234227-PPT-Clemson_University.jpg?width=500)
Verbatim
e0“The phytohormone IAA (indol-3-acetic acid) was tested in vitro on growth of tomato wilt pathogen Fusarium oxysporum lycopersici. The hormone reduced spore germination”
Claim · model-written summary
IAA reduced mycelial dry weight of Fusarium oxysporum lycopersici in vitro.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- IAAe1
- Interactor
- Fusarium oxysporum lycopersiciFusarium oxysporume0pathogen
- Outcome
- mycelial dry weighte0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tomato wilt pathogen Fusarium oxysporum lycopersici. The hormone reduced spore germination, mycelial dry weight and protein content”
e1“The phytohormone IAA (indol-3-acetic acid) was tested in vitro on growth of tomato wilt pathogen Fusarium oxysporum lycopersici”
Claim · model-written summary
IAA reduced protein content of Fusarium oxysporum lycopersici in vitro.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- IAAe1
- Interactor
- Fusarium oxysporum lycopersiciFusarium oxysporume0pathogen
- Outcome
- protein contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tomato wilt pathogen Fusarium oxysporum lycopersici. The hormone reduced spore germination, mycelial dry weight and protein content”
e1“The phytohormone IAA (indol-3-acetic acid) was tested in vitro on growth of tomato wilt pathogen Fusarium oxysporum lycopersici”
Claim · model-written summary
Pathogen-growth reduction increased as IAA concentration increased.
- Taxon
- tomatoSolanum lycopersicume1
- Treatment
- IAAe1
- Interactor
- Fusarium oxysporum lycopersiciFusarium oxysporume1pathogen
- Outcome
- reductione0
- Direction
- elevatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Such reduction was matched with the elevation in the hormone concentration”
e1“The phytohormone IAA (indol-3-acetic acid) was tested in vitro on growth of tomato wilt pathogen Fusarium oxysporum lycopersici”
Claim · model-written summary
Soil application of IAA increased shoot and root length of uninoculated tomato plants, especially at low concentrations.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- application of IAA to soile0
- Outcome
- shoot and roote0
- Direction
- longere0
- Qualifier
- particularly at low concentrationse0
- Comparator
- controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The in vivo application of IAA to soil of the uninoculated plants (controls) improved growth and yielded longer shoot and root, particularly at low concentrations”
t0“tomato plants”
Claim · model-written summary
IAA soil treatment prevented disease incidence from soil pathogens in uninoculated tomato plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- application of IAA to soile1
- Interactor
- soil pathogense0pathogen
- Outcome
- disease incidence by soil pathogense0
- Direction
- prevent completelye0
- Comparator
- controlse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the hormone could prevent completely any chance for disease incidence by soil pathogens”
e1“The in vivo application of IAA to soil of the uninoculated plants (controls)”
t0“tomato plants”
Claim · model-written summary
IAA in soil reduced infection rate in inoculated tomato plants.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Treatment
- IAA in soile0
- Interactor
- Fusarium oxysporum lycopersiciFusarium oxysporumt0pathogen
- Outcome
- infection ratee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Presence of IAA in soil of inoculated plants not only reduced the infection rate but also increased plant growth”
t0“tomato plants by IAA against Fusarium oxysporum lycopersici”
Claim · model-written summary
IAA in soil increased growth of inoculated tomato plants.
- Taxon
- tomato plantsSolanum lycopersicumt0
- Treatment
- IAA in soile0
- Interactor
- Fusarium oxysporum lycopersiciFusarium oxysporumt0pathogen
- Outcome
- plant growthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Presence of IAA in soil of inoculated plants not only reduced the infection rate but also increased plant growth”
t0“tomato plants by IAA against Fusarium oxysporum lycopersici”
Claim · model-written summary
The authors attributed IAA-mediated tomato disease suppression to enhanced plant growth, direct pathogen harm and/or induced host resistance.
- Taxon
- tomato plantsSolanum lycopersicume0
- Treatment
- application of IAAe0
- Outcome
- Disease suppressione0
- Qualifier
- increasing plant growth, exerting a direct harmful effect on the target pathogen and/or inducing resistance in host tissuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Disease suppression in tomato plants, exerted by application of IAA, was achieved through either increasing plant growth, exerting a direct harmful effect on the target pathogen and/or inducing resistance in host tissue”
Claim · model-written summary
Induced resistance in tomato was correlated with induction of secondary metabolites.
- Taxon
- tomato plantsSolanum lycopersicume0
- Compound
- secondary metabolitese0
- Outcome
- induced resistancee0
- Qualifier
- may have a role in increasing tolerancee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The induced resistance was correlated with induction of certain secondary metabolites which may have a role in increasing tolerance in tomato plants to the pathogen”
The same questions in other papers
indole-3-acetic acid · disease · Solanum lycopersicum (tomato)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.