Abstract
This study aimed to investigate whether and how nighttime warming (NW) influences the copper (Cu) bioaccumulation of wheat ( Triticum aestivum L.) under Cu pollution. We examined plant growth, Cu concentration, and antioxidant enzymes of wheat after 6 months of Cu exposure (0, 100, 400, and 800 mg/kg) under NW. The results indicated that, NW of 1.54°C significantly promoted Cu translocation from root to shoot through an increasing root system under increased Cu treatments ( p < 0.05). The Cu contents of grains were significantly increased by NW under 800 mg/kg Cu treatment ( p < 0.05). NW decreased superoxide dismutase (SOD) activity under increased Cu treatments ( p < 0.05). There were significantly negative correlations between biomass and Cu concentrations of the same part under NW ( p < 0.05). The root biomass significantly increased by 51% in NW compared with nonnighttime warming (CK) ( p < 0.05). These results provided evidence that wheat might respond to NW by altering their roots so that they were larger, thinner, and longer, suggesting that soil Cu translocation from root to shoot would be accelerated resulting from the expanded roots under elevated temperatures, and thus forewarned the food safety risks of climate change in agricultural ecosystem.
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Claims 7
Claim · model-written summary
Nighttime warming promoted copper translocation from wheat root to shoot under increased copper treatments.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- NW of 1.54°Ce0
- Outcome
- Cu translocation from root to shoote0
- Direction
- promotede0
- Qualifier
- under increased Cu treatmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NW of 1.54°C significantly promoted Cu translocation from root to shoot through an increasing root system under increased Cu treatments”
e1“wheat ( Triticum aestivum L.)”
Claim · model-written summary
Nighttime warming increased grain copper content under 800 mg/kg copper treatment.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- grainse0
- Treatment
- NWe0
- Outcome
- Cu contents of grainse0
- Direction
- increasede0
- Qualifier
- 800 mg/kg Cu treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Cu contents of grains were significantly increased by NW under 800 mg/kg Cu treatment”
e1“wheat ( Triticum aestivum L.)”
Claim · model-written summary
Nighttime warming decreased superoxide dismutase activity under increased copper treatments.
- Taxon
- wheatTriticum aestivume1
- Treatment
- NWe0
- Gene
- superoxide dismutase (SOD)e0
- Outcome
- superoxide dismutase (SOD) activitye0
- Direction
- decreasede0
- Qualifier
- increased Cu treatmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NW decreased superoxide dismutase (SOD) activity under increased Cu treatments”
e1“wheat ( Triticum aestivum L.)”
Claim · model-written summary
Biomass was negatively correlated with copper concentration in the same wheat part under nighttime warming.
- Taxon
- wheatTriticum aestivume1
- Treatment
- NWe0
- Compound
- Cue0
- Outcome
- biomasse0
- Direction
- negativee0
- Qualifier
- same parte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly negative correlations between biomass and Cu concentrations of the same part under NW”
e1“wheat ( Triticum aestivum L.)”
Claim · model-written summary
Nighttime warming increased wheat root biomass by 51% compared with no nighttime warming.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- roote0
- Treatment
- NWe0
- Outcome
- root biomasse0
- Direction
- increasede0
- Value
- 51%e0
- Comparator
- nonnighttime warming (CK)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The root biomass significantly increased by 51% in NW compared with nonnighttime warming (CK)”
e1“wheat ( Triticum aestivum L.)”
Claim · model-written summary
The authors infer that nighttime warming produces larger, thinner and longer wheat roots.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- rootse0
- Treatment
- NWe0
- Outcome
- roots so that they were larger, thinner, and longere0
- Direction
- largere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wheat might respond to NW by altering their roots so that they were larger, thinner, and longer”
Claim · model-written summary
The authors suggest expanded roots under elevated temperatures accelerate soil copper translocation to shoots.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- expanded rootse0
- Outcome
- soil Cu translocation from root to shoote0
- Qualifier
- elevated temperaturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil Cu translocation from root to shoot would be accelerated resulting from the expanded roots under elevated temperatures”
e1“wheat ( Triticum aestivum L.)”
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See all 131 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.