Abstract
Whiteflies damage tomatoes mostly via the viruses they transmit. Cultivated tomatoes lack many of the resistances of their wild relatives. In order to increase protection to its major pest, the whitefly Bemisia tabaci and its transmitted Tomato Yellow Leaf Curl Virus (TYLCV), we introgressed a trichome-based resistance trait from the wild tomato Solanum pimpinellifolium into cultivated tomato, S. lycopersicum. The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes, and exhibits increased, yet limited protection to whiteflies at early development stages. Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density, acylsucrose production, and enhanced resistance to whiteflies, leading to 50% decrease in the virus disease incidence compared to cultivated tomato. Using transcriptomics, metabolite analysis and insect bioassays we established the basis of this inducible resistance. We found that MeJA activated the expression of the genes involved in the biosynthesis of the defensive acylsugars in young BC5S2 plants leading to enhanced chemical defenses in their acquired type-IV trichomes. Our results show that not only constitutive but also these inducible defenses can be transferred from wild into cultivated crops to aid sustainable protection, suggesting that conventional breeding strategies provide a feasible alternative to increase pest resistance in tomato.
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Claims 9
Claim · model-written summary
BC5S2 has acylsucrose-producing type-IV trichomes unlike cultivated tomatoes.
- Taxon
- tomato
Solanum lycopersicume0e1e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes”
e1“The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes”
e2“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density”
Claim · model-written summary
BC5S2 has increased but limited whitefly protection early in development.
- Taxon
- tomatoSolanum lycopersicume0e1e2
- Interactor
- whitefliesAleyrodoideae0e1e2pest
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exhibits increased, yet limited protection to whiteflies at early development stages”
e1“The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes”
e2“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density”
Claim · model-written summary
Methyl jasmonate increased type-IV trichome density by 60% in young plants.
- Taxon
- tomatoSolanum lycopersicume0e1e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density”
e1“The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes”
e2“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density”
Claim · model-written summary
Methyl jasmonate increased acylsucrose production.
- Taxon
- tomatoSolanum lycopersicume0e1e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density, acylsucrose production”
e1“The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes”
e2“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density”
Claim · model-written summary
Methyl jasmonate enhanced whitefly resistance.
- Taxon
- tomatoSolanum lycopersicume0e1e2
- Interactor
- whitefliesAleyrodoideae0e1e2pest
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density, acylsucrose production, and enhanced resistance to whiteflies”
e1“The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes”
e2“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density”
Claim · model-written summary
Methyl jasmonate treated plants had 50% less viral disease than cultivated tomato.
- Taxon
- tomatoSolanum lycopersicume0e1e2
- Interactor
- Tomato Yellow Leaf Curl Virus (TYLCV)Tomato yellow leaf curl viruse0e1e2e3pathogen
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leading to 50% decrease in the virus disease incidence compared to cultivated tomato”
e1“The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes”
e2“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density”
e3“the whitefly Bemisia tabaci and its transmitted Tomato Yellow Leaf Curl Virus (TYLCV)”
Claim · model-written summary
Methyl jasmonate activated defensive acylsugar biosynthesis gene expression in young BC5S2 plants.
- Taxon
- tomatoSolanum lycopersicume0e1e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“MeJA activated the expression of the genes involved in the biosynthesis of the defensive acylsugars in young BC5S2 plants”
e1“The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes”
e2“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density”
Claim · model-written summary
Methyl jasmonate enhanced chemical defenses in acquired type-IV trichomes.
- Taxon
- tomatoSolanum lycopersicume0e1e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leading to enhanced chemical defenses in their acquired type-IV trichomes”
e1“The tomato backcross line BC5S2 contains acylsucrose-producing type-IV trichomes, unlike cultivated tomatoes”
e2“Treatment of young plants with methyl jasmonate (MeJA) resulted in a 60% increase in type-IV trichome density”
Claim · model-written summary
The authors conclude that inducible defenses can be transferred from wild to cultivated crops for protection.
- Outcome
- transferred from wild into cultivated crops to aid sustainable protectione0
Not reportedTaxon
Verbatim
e0“these inducible defenses can be transferred from wild into cultivated crops to aid sustainable protection”
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See all 19 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.