Abstract
Aluminum (Al) toxicity is a major constraint to plant growth and crop yield in acid soils. Tomato cultivars are especially susceptible to excessive Al3+ accumulated in the root zone. In this study, tomato plants were grown in a hydroponic culture system supplemented with 50 µM AlK(SO4)2. Seeds harvested from Al-treated plants contained a significantly higher Al content than those grown in the control hydroponic solution. In this study, these Al-enriched tomato seeds (harvested from Al-treated tomato plants) were germinated in 50 µM AlK(SO4)2 solution in a homopiperazine-1,4-bis(2-ethanesulfonic acid) buffer (pH 4.0), and the control solution which contained the buffer only. Proteomes of radicles were analyzed quantitatively by mass spectrometry employing isobaric tags for relative and absolute quantitation (iTRAQ®). The proteins identified were assigned to molecular functional groups and cellular metabolic pathways using MapMan. Among the proteins whose abundance levels changed significantly were: a number of transcription factors; proteins regulating gene silencing and programmed cell death; proteins in primary and secondary signaling pathways, including phytohormone signaling and proteins for enhancing tolerance to abiotic and biotic stress. Among the metabolic pathways, enzymes in glycolysis and fermentation and sucrolytic pathways were repressed. Secondary metabolic pathways including the mevalonate pathway and lignin biosynthesis were induced. Biological reactions in mitochondria seem to be induced due to an increase in the abundance level of mitochondrial ribosomes and enzymes in the TCA cycle, electron transport chains and ATP synthesis.
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Claims 5
Claim · model-written summary
Seeds from aluminum-treated plants had significantly higher aluminum content than controls.
- Taxon
- tomato
Solanum lycopersicume1 - Organ / stage
- Seedse0
- Treatment
- Al-treatede0
- Outcome
- Al contente0
- Direction
- highere0
- Comparator
- control hydroponic solutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seeds harvested from Al-treated plants contained a significantly higher Al content than those grown in the control hydroponic solution.”
e1“In this study, tomato plants”
Claim · model-written summary
Several regulatory and stress-related protein groups changed significantly in abundance.
- Taxon
- tomatoSolanum lycopersicume1
- Organ / stage
- seedse1
- Outcome
- proteins whose abundance levels changed significantlye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the proteins whose abundance levels changed significantly were: a number of transcription factors; proteins regulating gene silencing and programmed cell death; proteins in primary and secondary signaling pathways, including phytohormone signaling and proteins for enhancing tolerance to abiotic and biotic stress.”
e1“Al-enriched tomato seeds”
Claim · model-written summary
Glycolysis, fermentation and sucrolytic pathway enzymes were repressed.
- Taxon
- tomatoSolanum lycopersicume1
- Organ / stage
- seedse1
- Outcome
- enzymes in glycolysis and fermentation and sucrolytic pathwayse0
- Direction
- repressede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enzymes in glycolysis and fermentation and sucrolytic pathways were repressed”
e1“Al-enriched tomato seeds”
Claim · model-written summary
Mevalonate and lignin biosynthesis pathways were induced.
- Taxon
- tomatoSolanum lycopersicume1
- Organ / stage
- seedse1
- Outcome
- mevalonate pathway and lignin biosynthesise0
- Direction
- inducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Secondary metabolic pathways including the mevalonate pathway and lignin biosynthesis were induced.”
e1“Al-enriched tomato seeds”
Claim · model-written summary
Mitochondrial reactions appeared induced, with higher mitochondrial ribosome and energy enzyme abundance.
- Taxon
- tomatoSolanum lycopersicume1
- Organ / stage
- seedse1
- Outcome
- Biological reactions in mitochondriae0
- Direction
- inducede0
- Qualifier
- seem to bee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biological reactions in mitochondria seem to be induced due to an increase in the abundance level of mitochondrial ribosomes and enzymes in the TCA cycle, electron transport chains and ATP synthesis.”
e1“Al-enriched tomato seeds”
The same questions in other papers
aluminium atom · molecular: metabolites · Solanum lycopersicum (tomato)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- positive
- positive
2 papers more in this group
See all 6 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.