Abstract
Responses of morphological and physiological characteristics in rice(Oryza sativa L.) seedling roots to its uptake of nano-Cu O(10, 100mg/L) were investigated using hydroponic experiments by setting micron oxide copper(micron-Cu O) and copper ions(Cu2+) as control. Results showed that total copper contents in roots and shoots(roots 351~1444mg/kg dw; shoots 351~1444mg/kg dw) of rice seedlings in nano-Cu O treatments(10, 100mg/L) were higher than those in micron-Cu O treatments(roots 248~817mg/kg dw; shoots 1.57~1.60mg/kg dw) and Cu2+ treatments(roots147~220mg/kg dw; shoots 14~26mg/kg dw), and furthermore, nano-Cu O was observed in TEM images of both root and stem cells, indicating rice seedling can uptake and transfer nano-Cu O by the form of nano-Cu O. A large amount of nano-Cu Os observed in endosomes of rice seedling cells indicated that nano-Cu O mainly relied on endocytic pathways to enter cell. The nano-Cu O had toxic effects on rice seedling roots and the inhibitory rates on roots morphologies of nano-Cu O ranged from 28% to 74%, and root length, root volume and root specific surface area were most sensitive indicators for nano-Cu O toxicity. Both nano-Cu O bioaccumulation in rice and nanoeffects resulted in toxicities of nano-Cu O to rice seedling roots. Under low concentration of nano-Cu O strees(10mg/L), root activities of rice seedlings significant improved but no significant differences were observed in its total roots absorbing area and actively absorbing area, compared with the control. Under high concentration of nano-Cu O strees(100mg/L), root activities and total roots absorbing area of rice seedlings significantly decreased, compared with control.
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
Nano-Cu O produced higher total copper content in rice roots than micron-Cu O and Cu2+ treatments.
- Taxon
- rice
Oryza sativae0 - Treatment
- nano-Cu O treatments(10, 100mg/L)e0
- Outcome
- total copper contents in rootse0
- Direction
- highere0
- Value
- 351~1444mg/kg dwe0
- Comparator
- micron-Cu O treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total copper contents in roots and shoots(roots 351~1444mg/kg dw; shoots 351~1444mg/kg dw) of rice seedlings in nano-Cu O treatments(10, 100mg/L) were higher than those in micron-Cu O treatments(roots 248~817mg/kg dw; shoots 1.57~1.60mg/kg dw) and Cu2+ treatments(roots147~220mg/kg dw; shoots 14~26mg/kg dw)”
Claim · model-written summary
Nano-Cu O produced higher total copper content in rice shoots than micron-Cu O and Cu2+ treatments.
- Taxon
- riceOryza sativae0
- Treatment
- nano-Cu O treatments(10, 100mg/L)e0
- Outcome
- total copper contents in roots and shootse0
- Direction
- highere0
- Value
- 351~1444mg/kg dwe0
- Comparator
- Cu2+ treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total copper contents in roots and shoots(roots 351~1444mg/kg dw; shoots 351~1444mg/kg dw) of rice seedlings in nano-Cu O treatments(10, 100mg/L) were higher than those in micron-Cu O treatments(roots 248~817mg/kg dw; shoots 1.57~1.60mg/kg dw) and Cu2+ treatments(roots147~220mg/kg dw; shoots 14~26mg/kg dw)”
Claim · model-written summary
Nano-Cu O was observed in rice root and stem cells.
- Taxon
- riceOryza sativat0
- Outcome
- nano-Cu O was observed in TEM images of both root and stem cellse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nano-Cu O was observed in TEM images of both root and stem cells”
t0“rice(Oryza sativa L.)”
Claim · model-written summary
Nano-Cu O appeared mainly to enter rice cells through endocytic pathways.
- Taxon
- riceOryza sativae0
- Outcome
- enter celle0
- Qualifier
- endocytic pathwayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A large amount of nano-Cu Os observed in endosomes of rice seedling cells indicated that nano-Cu O mainly relied on endocytic pathways to enter cell”
Claim · model-written summary
Nano-Cu O inhibited rice root morphology by 28% to 74%.
- Taxon
- riceOryza sativae0
- Treatment
- nano-Cu Oe0
- Outcome
- roots morphologiese0
- Direction
- inhibitorye0
- Value
- 28% to 74%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nano-Cu O had toxic effects on rice seedling roots and the inhibitory rates on roots morphologies of nano-Cu O ranged from 28% to 74%”
Claim · model-written summary
Root length, volume and specific surface area were the most sensitive indicators of nano-Cu O toxicity in rice.
- Taxon
- riceOryza sativat0
- Outcome
- root length, root volume and root specific surface area were most sensitive indicators for nano-Cu O toxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root length, root volume and root specific surface area were most sensitive indicators for nano-Cu O toxicity”
t0“rice(Oryza sativa L.)”
Claim · model-written summary
At 10mg/L nano-Cu O, rice seedling root activity increased significantly.
- Taxon
- riceOryza sativae0
- Treatment
- nano-Cu O strees(10mg/L)e0
- Outcome
- root activitiese0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under low concentration of nano-Cu O strees(10mg/L), root activities of rice seedlings significant improved”
Claim · model-written summary
At 10mg/L nano-Cu O, total and active absorbing root areas did not differ significantly from control.
- Taxon
- riceOryza sativat0
- Treatment
- nano-Cu O strees(10mg/L)e1
- Outcome
- total roots absorbing area and actively absorbing areae0
- Direction
- no significant differencese0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant differences were observed in its total roots absorbing area and actively absorbing area, compared with the control”
e1“Under low concentration of nano-Cu O strees(10mg/L)”
t0“rice(Oryza sativa L.)”
Claim · model-written summary
At 100mg/L nano-Cu O, rice root activity and total absorbing area decreased significantly versus control.
- Taxon
- riceOryza sativae0
- Treatment
- nano-Cu O strees(100mg/L)e0
- Outcome
- root activities and total roots absorbing areae0
- Direction
- decreasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under high concentration of nano-Cu O strees(100mg/L), root activities and total roots absorbing area of rice seedlings significantly decreased, compared with control”
The same questions in other papers
nanoparticle · nutrient: content · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 76 in the opposite direction
- positive
- positive
- positive
76 papers more in this group
See all 80 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.