Abstract
Plant defense to pests or pathogens involves global changes in gene expression mediated by multiple signaling pathways. A role for the salicylic acid (SA) signaling pathway in Mi-1-mediated resistance of tomato (Solanum lycopersicum) to aphids was previously identified and its implication in the resistance to root-knot nematodes is controversial, but the importance of SA in basal and Mi-1-mediated resistance of tomato to whitefly Bemisia tabaci had not been determined. SA levels were measured before and after B. tabaci infestation in susceptible and resistant Mi-1-containing tomatoes, and in plants with the NahG bacterial transgene. Tomato plants of the same genotypes were also screened with B. tabaci (MEAM1 and MED species, before known as B and Q biotypes, respectively). The SA content in all tomato genotypes transiently increased after infestation with B. tabaci albeit at variable levels. Whitefly fecundity or infestation rates on susceptible Moneymaker were not significantly affected by the expression of NahG gene, but the Mi-1-mediated resistance to B. tabaci was lost in VFN NahG plants. Results indicated that whiteflies induce both SA and jasmonic acid accumulation in tomato. However, SA has no role in basal defense of tomato against B. tabaci. In contrast, SA is an important component of the Mi-1-mediated resistance to B. tabaci in tomato.
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Claims 6
Claim · model-written summary
SA content in tomato genotypes transiently increased after B. tabaci infestation, at variable levels.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- infestation with B. tabacie1
- Interactor
- B. tabaci
Bemisia tabacie1pest - Outcome
- SA contente1
- Direction
- transiently increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The SA content in all tomato genotypes transiently increased after infestation with B. tabaci albeit at variable levels”
Claim · model-written summary
Whiteflies induced both SA and jasmonic acid accumulation in tomato.
- Taxon
- tomatoSolanum lycopersicume4
- Interactor
- whitefliesAleyrodoideae4pest
- Outcome
- SA and jasmonic acid accumulatione4
- Direction
- inducee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Results indicated that whiteflies induce both SA and jasmonic acid accumulation in tomato”
Claim · model-written summary
NahG expression did not significantly affect whitefly fecundity or infestation rates on susceptible Moneymaker tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Material
- Moneymakere2
- Treatment
- expression of NahG genee2
- Interactor
- Whiteflye2pest
- Outcome
- Whitefly fecundity or infestation ratese2
- Direction
- not significantly affectede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA levels were measured before and after B. tabaci infestation in susceptible and resistant Mi-1-containing tomatoes”
e2“Whitefly fecundity or infestation rates on susceptible Moneymaker were not significantly affected by the expression of NahG gene”
Claim · model-written summary
SA has no role in basal defense of tomato against B. tabaci.
- Taxon
- tomatoSolanum lycopersicume5
- Interactor
- B. tabaciBemisia tabacie5pest
- Compound
- SAe5
- Outcome
- basal defensee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“However, SA has no role in basal defense of tomato against B. tabaci”
Claim · model-written summary
Mi-1-mediated resistance to B. tabaci was lost in VFN NahG tomato plants.
- Taxon
- tomatoSolanum lycopersicume6
- Material
- VFN NahGe3
- Treatment
- NahG bacterial transgenee7
- Interactor
- B. tabaciBemisia tabacie3pest
- Outcome
- Mi-1-mediated resistance to B. tabacie3
- Direction
- was loste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“the Mi-1-mediated resistance to B. tabaci was lost in VFN NahG plants”
e6“In contrast, SA is an important component of the Mi-1-mediated resistance to B. tabaci in tomato”
e7“plants with the NahG bacterial transgene”
Claim · model-written summary
SA is an important component of Mi-1-mediated resistance of tomato to B. tabaci.
- Taxon
- tomatoSolanum lycopersicume6
- Interactor
- B. tabaciBemisia tabacie6pest
- Compound
- SAe6
- Outcome
- Mi-1-mediated resistance to B. tabacie6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“In contrast, SA is an important component of the Mi-1-mediated resistance to B. tabaci in tomato”
The same questions in other papers
transgenic · pest · Solanum lycopersicum (tomato)Positive and negative results
1 paper in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 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.