Abstract
Modern durum wheat cultivars are more prone to ozone stress because of their high photosynthetic efficiency and leaf gas exchanges that cause a greater pollutant uptake. This, in turn, generates an increased reactive oxygen species (ROS) production that is a challenge to control by the antioxidant system of the plant, therefore affecting final yield, with a reduction up to 25%. With the aim of mitigating oxidative stress in wheat, we used chitosan nanoparticles (CHT-NPs) either unloaded or loaded with the antioxidant compound N-acetyl cysteine (NAC), on plants grown either in a greenhouse or in an open field. NAC-loaded NPs were prepared by adding 0.5 mg/mL NAC to the CHT solution before ionotropic gelation with tripolyphosphate (TTP). Greenhouse experiments evidenced that CHT-NPs and CHT-NPs-NAC were able to increase the level of the leaf antioxidant pool, particularly ascorbic acid (AsA) content. However, the results of field trials, while confirming the increase in the AsA level, at least in the first phenological stages, were less conclusive. The presence of NAC did not appear to significantly affect the leaf antioxidant pool, although the grain yield was slightly higher in NAC-treated parcels. Furthermore, both NAC-loaded and -unloaded CHT-NPs partially reduced the symptom severity and increased the weight of 1000 seeds, thus showing a moderate mitigation of ozone injury.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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
Unloaded chitosan nanoparticles increased the leaf antioxidant pool, especially ascorbic acid, in greenhouse wheat.
- Taxon
- Durum Wheat
Triticum turgidum subsp. durumt0 - Treatment
- CHT-NPse0
- Outcome
- leaf antioxidant pool, particularly ascorbic acid (AsA) contente0
- Direction
- increasee0
- Setting
- Greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments evidenced that CHT-NPs and CHT-NPs-NAC were able to increase the level of the leaf antioxidant pool, particularly ascorbic acid (AsA) content”
t0“Durum Wheat”
Claim · model-written summary
NAC loaded nanoparticles increased the leaf antioxidant pool in greenhouse wheat.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- CHT-NPs-NACe0
- Outcome
- leaf antioxidant pool, particularly ascorbic acid (AsA) contente0
- Direction
- increasee0
- Setting
- Greenhousee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Greenhouse experiments evidenced that CHT-NPs and CHT-NPs-NAC were able to increase the level of the leaf antioxidant pool, particularly ascorbic acid (AsA) content”
t0“Durum Wheat”
Claim · model-written summary
Field trials confirmed increased ascorbic acid at least in early phenological stages, though results were less conclusive.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Outcome
- AsA levele0
- Direction
- increasee0
- Qualifier
- at least in the first phenological stagese0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field trials, while confirming the increase in the AsA level, at least in the first phenological stages, were less conclusive”
t0“Durum Wheat”
Claim · model-written summary
NAC did not appear to significantly affect the leaf antioxidant pool.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- NACe0
- Outcome
- leaf antioxidant poole0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The presence of NAC did not appear to significantly affect the leaf antioxidant pool”
t0“Durum Wheat”
Claim · model-written summary
NAC treated plots had slightly higher grain yield.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- NAC-treatede0
- Outcome
- grain yielde0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the grain yield was slightly higher in NAC-treated parcels”
t0“Durum Wheat”
Claim · model-written summary
NAC loaded nanoparticles partially reduced ozone symptom severity.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- NAC-loadede0
- Outcome
- symptom severitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both NAC-loaded and -unloaded CHT-NPs partially reduced the symptom severity”
t0“Durum Wheat”
Claim · model-written summary
Unloaded nanoparticles partially reduced ozone symptom severity.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- -unloaded CHT-NPse0
- Outcome
- symptom severitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both NAC-loaded and -unloaded CHT-NPs partially reduced the symptom severity”
t0“Durum Wheat”
Claim · model-written summary
NAC loaded nanoparticles increased thousand seed weight.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- NAC-loadede0
- Outcome
- weight of 1000 seedse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both NAC-loaded and -unloaded CHT-NPs partially reduced the symptom severity and increased the weight of 1000 seeds”
t0“Durum Wheat”
Claim · model-written summary
Unloaded nanoparticles increased thousand seed weight.
- Taxon
- Durum WheatTriticum turgidum subsp. durumt0
- Treatment
- -unloaded CHT-NPse0
- Outcome
- weight of 1000 seedse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both NAC-loaded and -unloaded CHT-NPs partially reduced the symptom severity and increased the weight of 1000 seeds”
t0“Durum Wheat”
The same questions in other papers
chitosan · disease · Triticum turgidum (rivet wheat)Results agree
1 paper in the same direction as this paper
- positive
chitosan · yield · Triticum turgidum (rivet wheat)Results agree
1 paper in the same direction as this paper
- positive
nanoparticle · yield · Triticum turgidum (rivet wheat)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.