Abstract
Copper is among the major heavy metal contaminants in the environment with various anthropogenic and natural sources. Human health risk from heavy metal bioaccumulation in vegetables has been a subject of growing concern in recent years. To investigate Cu phytotoxic effects and bioaccumulation in the popular vegetable Chinese cabbage (Brassica pekinensis Rupr) as well as the implications for human health due to Cu in the vegetable supply, seed germination and pot culture experiments with this vegetable were carried out. Six levels (0, 0.008, 0.031, 0.125, 0.5, and 2.0 mM/L) and 3 levels (0, 0.2, and 1.0 mM/kg) of Cu treatments were performed for the seed germination and pot culture experiments, respectively. The LC(50) of Cu for seed germination of Chinese cabbage was 0.348 mM/L. In the pot culture experiments, Cu treatments significantly increased electrolyte leakage and peroxidase activity of shoot tissues, demonstrating Cu phytotoxicity to the plants. On the other hand, Cu treatments significantly stimulated, instead of reduced, chlorophyll content. Cu treatments did not show a significant effect on shoot biomass. Compared to the control, Cu treatments significantly elevated the Cu content of the shoots-9.9, 42.5, and 119.0 mg/kg (DW) of Cu were detected in the 0, 0.2, and 1.0 mM/kg treatments, respectively. These results showed that although the plants accumulated an elevated copper content and suffered damage to some extent under Cu treatment, they looked healthy. It was suggested that Chinese cabbage with an elevated Cu content and without showing visible symptoms of damage possibly could cause a risk to human health from the transfer of the metal in food.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
The copper LC50 for Chinese cabbage seed germination was 0.348 mM/L.
- Taxon
- Chinese cabbage
Brassica rapa subsp. pekinensise0 - Organ / stage
- seede0
- Outcome
- LC(50) of Cu for seed germinatione0
- Value
- 0.348 mM/Le0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The LC(50) of Cu for seed germination of Chinese cabbage was 0.348 mM/L.”
Claim · model-written summary
Copper treatments significantly increased shoot electrolyte leakage and peroxidase activity.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Organ / stage
- shoot tissuese0
- Treatment
- Cu treatmentse0
- Outcome
- electrolyte leakage and peroxidase activitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cu treatments significantly increased electrolyte leakage and peroxidase activity of shoot tissues”
t0“Chinese cabbage”
Claim · model-written summary
Copper treatments significantly stimulated chlorophyll content.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- Cu treatmentse0
- Outcome
- chlorophyll contente0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cu treatments significantly stimulated, instead of reduced, chlorophyll content.”
t0“Chinese cabbage”
Claim · model-written summary
Copper treatments showed no significant effect on shoot biomass.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- Cu treatmentse0
- Outcome
- shoot biomasse0
- Direction
- did not show a significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cu treatments did not show a significant effect on shoot biomass.”
t0“Chinese cabbage”
Claim · model-written summary
Shoot copper content was 9.9 mg/kg (DW) in the 0 mM/kg treatment.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Organ / stage
- shootse0
- Treatment
- 0e0
- Outcome
- Cu content of the shootse0
- Value
- 9.9e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the control, Cu treatments significantly elevated the Cu content of the shoots-9.9, 42.5, and 119.0 mg/kg (DW) of Cu were detected in the 0, 0.2, and 1.0 mM/kg treatments, respectively.”
t0“Chinese cabbage”
Claim · model-written summary
Shoot copper content was 42.5 mg/kg (DW) in the 0.2 mM/kg treatment.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- 0.2e0
- Outcome
- Cue0
- Value
- 42.5e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“9.9, 42.5, and 119.0 mg/kg (DW) of Cu were detected in the 0, 0.2, and 1.0 mM/kg treatments, respectively.”
t0“Chinese cabbage”
Claim · model-written summary
Shoot copper content was 119.0 mg/kg (DW) in the 1.0 mM/kg treatment.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- 1.0e0
- Outcome
- Cue0
- Value
- 119.0 mg/kg (DW)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“9.9, 42.5, and 119.0 mg/kg (DW) of Cu were detected in the 0, 0.2, and 1.0 mM/kg treatments, respectively.”
t0“Chinese cabbage”
Claim · model-written summary
Copper-treated plants looked healthy despite copper accumulation and some damage.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensist0
- Treatment
- Cu treatmente0
- Outcome
- they looked healthye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although the plants accumulated an elevated copper content and suffered damage to some extent under Cu treatment, they looked healthy.”
t0“Chinese cabbage”
Claim · model-written summary
Chinese cabbage with elevated copper but no visible damage may pose a human health risk through food.
- Taxon
- Chinese cabbageBrassica rapa subsp. pekinensise0
- Outcome
- risk to human healthe0
- Qualifier
- without showing visible symptoms of damagee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chinese cabbage with an elevated Cu content and without showing visible symptoms of damage possibly could cause a risk to human health from the transfer of the metal in food.”
The same questions in other papers
copper atom · physiology: oxidative · Brassica rapa (field mustard)Results differ
2 papers in the same direction as this paper
- negative
- no effect
copper atom · growth · Brassica rapa (field mustard)Results differ
8 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 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.