Abstract
Recent breakthroughs in agro-inputs research have led to the development of nanomaterials that can promote precision agriculture and better environmental security. The agricultural sector is increasingly facing the negative impacts of changing climates due to various stress conditions. To curb this scenario, economical and low-risk practices such as decreasing fertilizer inputs and seed priming have been promoted. In the current study, the H. odoratissimum aqueous extract was used to nucleate the Zn ionic species and grow the zinc oxide nanoparticles (ZnO NPs). The developed nanocomposites and their ionic zinc precursor were then integrated into tripolyphosphate (TPP)-crosslinked chitosan (CS/TPP) nanostructures by ionic gelation. Advanced physicochemical characterization techniques (SEM, EDS, TEM, DLS, FTIR, TGA, and XPS) were exploited to report the morphology, hydrodynamic size, surface charge, and structural organization of the developed nanomaterials. These revealed positively charged particles with hydrodynamic size in the 149–257 nm range. The NPs were used as priming agents for Zea mays seeds. At 0.04%, the ZnO-loaded CS/TPP NPs achieved higher root and shoot elongation in 10-day old seedlings compared to other treatments. The pristine CS/TPP NPs, Zn(II)-laden CS/TPP NPs, and ZnO-loaded CS/TPP NPs at 0.01% significantly promoted the early seedling development of seeds under salt stress. This represents the first report showing ZnO integrated chitosan nanocomposites as an auspicious nanopriming agent for stimulating the seed germination of maize. The study envisages offering perspectives on utilizing green nanotechnology to improve the early seedling development of maize. Furthermore, it has the potential to contribute towards UN SDG 2, thus addressing the threats to global food insecurity and doubling agricultural productivity by 2030.
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Claims 4
Claim · model-written summary
At 0.04%, ZnO-loaded CS/TPP nanoparticles gave higher root and shoot elongation than other treatments.
- Organ / stage
- 10-day old seedlingse0
- Treatment
- 0.04%, the ZnO-loaded CS/TPP NPse0
- Outcome
- root and shoot elongatione0
- Direction
- highere0
- Comparator
- other treatmentse0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 0.04%, the ZnO-loaded CS/TPP NPs achieved higher root and shoot elongation in 10-day old seedlings compared to other treatments”
t0“maize (Zea mays) seeds”
Claim · model-written summary
Pristine CS/TPP nanoparticles significantly promoted early seedling development under salt stress.
- Treatment
- pristine CS/TPP NPse0
- Outcome
- early seedling developmente0
- Direction
- promotede0
- Qualifier
- under salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pristine CS/TPP NPs, Zn(II)-laden CS/TPP NPs, and ZnO-loaded CS/TPP NPs at 0.01% significantly promoted the early seedling development of seeds under salt stress”
t0“maize (Zea mays) seeds”
Claim · model-written summary
Zn(II)-laden CS/TPP nanoparticles significantly promoted early seedling development under salt stress.
- Treatment
- Zn(II)-laden CS/TPP NPse0
- Outcome
- early seedling developmente0
- Direction
- promotede0
- Qualifier
- under salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pristine CS/TPP NPs, Zn(II)-laden CS/TPP NPs, and ZnO-loaded CS/TPP NPs at 0.01% significantly promoted the early seedling development of seeds under salt stress”
t0“maize (Zea mays) seeds”
Claim · model-written summary
ZnO-loaded CS/TPP nanoparticles at 0.01% significantly promoted early seedling development under salt stress.
- Treatment
- ZnO-loaded CS/TPP NPs at 0.01%e0
- Outcome
- early seedling developmente0
- Direction
- promotede0
- Qualifier
- under salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pristine CS/TPP NPs, Zn(II)-laden CS/TPP NPs, and ZnO-loaded CS/TPP NPs at 0.01% significantly promoted the early seedling development of seeds under salt stress”
t0“maize (Zea mays) seeds”
The same questions in other papers
zinc atom · growth · Zea mays (maize)Results differ
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- no effect
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See all 224 papers →triphosphate(5-) · growth · Zea mays (maize)Results agree
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nanoparticle · growth · Zea mays (maize)Positive and negative results
160 papers in the same direction as this paper · 21 in the opposite direction
- positive
- negative
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See all 182 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.