Abstract
Nickel (Ni), a component of urease, is a micronutrient essential for plant growth and development, but excess Ni is toxic to plants. Tomato (Solanum lycopersicum L.) is one of the important vegetables worldwide. Excessive use of fertilizers and pesticides led to Ni contamination in agricultural soils, thus reducing yield and quality of tomatoes. However, the molecular regulatory mechanisms of Ni toxicity responses in tomato plants have largely not been elucidated. Here, we investigated the molecular mechanisms underlying the Ni toxicity response in tomato plants by physio-biochemical, transcriptomic and molecular regulatory network analyses. Ni toxicity repressed photosynthesis, induced the formation of brush-like lateral roots and interfered with micronutrient accumulation in tomato seedlings. Ni toxicity also induced reactive oxygen species accumulation and oxidative stress responses in plants. Furthermore, Ni toxicity reduced the phytohormone concentrations, including auxin, cytokinin and gibberellic acid, thereby retarding plant growth. Transcriptome analysis revealed that Ni toxicity altered the expression of genes involved in carbon/nitrogen metabolism pathways. Taken together, these results provide a theoretical basis for identifying key genes that could reduce excess Ni accumulation in tomato plants and are helpful for ensuring food safety and sustainable agricultural development.
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Claims 6
Claim · model-written summary
Ni toxicity repressed photosynthesis in tomato seedlings.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Ni toxicitye0
- Outcome
- photosynthesise0
- Direction
- repressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Ni toxicity repressed photosynthesis, induced the formation of brush-like lateral roots and interfered with micronutrient accumulation in tomato seedlings”
Claim · model-written summary
Ni toxicity induced the formation of brush-like lateral roots in tomato seedlings.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Ni toxicitye0
- Outcome
- formation of brush-like lateral rootse0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Ni toxicity repressed photosynthesis, induced the formation of brush-like lateral roots and interfered with micronutrient accumulation in tomato seedlings”
Claim · model-written summary
Ni toxicity interfered with micronutrient accumulation in tomato seedlings.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Ni toxicitye0
- Outcome
- micronutrient accumulatione0
- Direction
- interferede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Ni toxicity repressed photosynthesis, induced the formation of brush-like lateral roots and interfered with micronutrient accumulation in tomato seedlings”
Claim · model-written summary
Ni toxicity induced reactive oxygen species accumulation and oxidative stress responses in tomato plants.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Ni toxicitye0
- Outcome
- reactive oxygen species accumulation and oxidative stress responsese0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Ni toxicity also induced reactive oxygen species accumulation and oxidative stress responses in plants”
Claim · model-written summary
Ni toxicity reduced phytohormone concentrations, including auxin, cytokinin and gibberellic acid, thereby retarding plant growth.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Ni toxicitye0
- Outcome
- phytohormone concentrations, including auxin, cytokinin and gibberellic acide0
- Direction
- reducede0
- Qualifier
- thereby retarding plant growthe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Ni toxicity reduced the phytohormone concentrations, including auxin, cytokinin and gibberellic acid, thereby retarding plant growth”
Claim · model-written summary
Transcriptome analysis showed Ni toxicity altered the expression of genes involved in carbon/nitrogen metabolism pathways.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Ni toxicitye0
- Outcome
- expression of genes involved in carbon/nitrogen metabolism pathwayse0
- Direction
- alterede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Transcriptome analysis revealed that Ni toxicity altered the expression of genes involved in carbon/nitrogen metabolism pathways”
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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.