Abstract
Nanoparticles (NPs) have attracted great attention due to their unique properties and efficient applications in various sectors. Copper (Cu) is an essential micronutrient for plants, which acts either as the metal component of enzymes or as a functional structural or a regulatory co-factor of a large number of enzymes. To understand the possible benefits of applying nanotechnology to agriculture, an important first step is to analyse penetration and transport of NPs in plants. The main aim of this article is to explore the possible effects of CuO NPs on germination of maize seedlings and growth of plants. Results showed that the germination rate, root and shoot length increased during uptake of Cu in the roots and the length of the shoots increased at high concentrations of CuO NPs. There was no toxic effect observed to inhibit seedling growth. In the sample in which the plants received a mixture of 800 mg/L of CuO NPs, the chlorophyll content decreased with photosynthetic activity and the catalase activity also decreased. While, in the sample in which the plants received a mixture of 550 mg/L CuO NPs, enzymatic and photosynthetic activities increased significantly along with root and shoot development in maize. The acquired results delivered conclusive evidence to indicate that the NPs considered under this study could enter into the maize plant cells, simply be assimilated by maize plants and also improved its growth by regulating the various enzyme activities.
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Claims 8
Claim · model-written summary
Copper uptake was associated with increased maize germination and root and shoot length.
- Treatment
- uptake of Cu in the rootse0
- Outcome
- germination rate, root and shoot lengthe0
- Direction
- increasede0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that the germination rate, root and shoot length increased during uptake of Cu in the roots”
t0“maize seedlings”
Claim · model-written summary
High CuO nanoparticle concentrations increased shoot length.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the length of the shoots increased at high concentrations of CuO NPs”
t0“maize seedlings”
Claim · model-written summary
No toxic inhibition of seedling growth was observed.
- Outcome
- no toxic effect observed to inhibit seedling growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no toxic effect observed to inhibit seedling growth.”
t0“maize seedlings”
Claim · model-written summary
At 800 mg/L CuO nanoparticles, chlorophyll content and photosynthetic activity decreased.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants received a mixture of 800 mg/L of CuO NPs, the chlorophyll content decreased with photosynthetic activity”
t0“maize seedlings”
Claim · model-written summary
At 800 mg/L CuO nanoparticles, catalase activity decreased.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants received a mixture of 800 mg/L of CuO NPs, the chlorophyll content decreased with photosynthetic activity and the catalase activity also decreased.”
t0“maize seedlings”
Claim · model-written summary
At 550 mg/L CuO nanoparticles, enzymatic and photosynthetic activities increased significantly.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants received a mixture of 550 mg/L CuO NPs, enzymatic and photosynthetic activities increased significantly”
t0“maize seedlings”
Claim · model-written summary
At 550 mg/L CuO nanoparticles, maize root and shoot development increased.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants received a mixture of 550 mg/L CuO NPs, enzymatic and photosynthetic activities increased significantly along with root and shoot development in maize.”
Claim · model-written summary
CuO nanoparticles entered and were assimilated by maize plant cells.
- Outcome
- enter into the maize plant cellse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NPs considered under this study could enter into the maize plant cells, simply be assimilated by maize plants”
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