Abstract
Wild tomato species (WTS) have long been attracting the attention of plant researchers due to their ability to tolerate harsh environmental conditions in their natural habitats. In this context, their use in grafting procedures, where they serve as rootstocks, has been proposed as a strategy to enhance the stress resilience of cultivated tomato. However, insights into the effectiveness of this approach are still needed to understand its real potential. Thus, this study evaluated whether grafting tomato plants (cv. Chico III) onto WTS rootstocks (Solanum habrochaites LA1223 and Solanum galapagense LA1403) could improve growth and physiological performance under combined drought (limited irrigation) and salinity (200 mM NaCl) stress. Biometrical and photosynthetic parameters were evaluated in grafted and non-grafted plants, before and after stress exposure, and stress-induced changes in biochemical endpoints were also assessed. Grafting onto WTS delayed scion growth and did not prevent the reductions in photosynthesis, growth, or reproductive output observed under stress conditions. Still, the use of wild rootstocks contributed to some physiological adjustments, including enhanced photosystem II efficiency under control conditions and improved antioxidant and osmotic regulation under stress, although these effects were insufficient to fully counteract the impact of combined drought and salinity. These findings indicate that, under severe yet relevant conditions of combined abiotic stress, grafting onto WTS alone is not enough to improve tomato plant resilience. Importantly, this study provides novel insights into rootstock-mediated physiological responses and highlights species-specific stress adjustments among WTS, offering valuable information for future integrated stress mitigation strategies.
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Claims 6
Claim · model-written summary
Grafting onto wild tomato species rootstocks delayed scion growth relative to non-grafted plants.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Grafting onto WTSe0
- Outcome
- scion growthe0
- Direction
- delayede0
- Comparator
- non-grafted plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Grafting onto WTS delayed scion growth”
e1“grafted and non-grafted plants”
Claim · model-written summary
Grafting onto wild tomato species rootstocks did not prevent the reductions in photosynthesis, growth or reproductive output observed under stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Grafting onto WTSe0
- Outcome
- photosynthesis, growth, or reproductive outpute0
- Direction
- did not prevent the reductionse0
- Comparator
- non-grafted plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Grafting onto WTS delayed scion growth and did not prevent the reductions in photosynthesis, growth, or reproductive output observed under stress conditions”
e1“grafted and non-grafted plants”
Claim · model-written summary
Wild rootstocks enhanced photosystem II efficiency under control conditions.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- wild rootstockse0
- Outcome
- photosystem II efficiencye0
- Direction
- enhancede0
- Qualifier
- under control conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“the use of wild rootstocks contributed to some physiological adjustments, including enhanced photosystem II efficiency under control conditions”
Claim · model-written summary
Wild rootstocks improved antioxidant and osmotic regulation under stress.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- wild rootstockse0
- Outcome
- antioxidant and osmotic regulatione1
- Direction
- improvede1
- Qualifier
- under stresse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“the use of wild rootstocks”
e1“improved antioxidant and osmotic regulation under stress”
Claim · model-written summary
The physiological adjustments from wild rootstocks were insufficient to fully counteract the impact of combined drought and salinity.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- insufficient to fully counteract the impact of combined drought and salinitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“these effects were insufficient to fully counteract the impact of combined drought and salinity”
Claim · model-written summary
The authors conclude that grafting onto wild tomato species alone is not enough to improve tomato plant resilience under severe combined abiotic stress.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- not enough to improve tomato plant resiliencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grafting onto WTS alone is not enough to improve tomato plant resilience”
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