Abstract
Drought stress can reduce strawberry yield and quality and is one of the main abiotic factors restricting strawberry production in China. Nano-agricultural technology has significant regulatory effects in improving crop yield and quality and reducing agricultural environmental pollution. We performed a pot experiment using FenYu No. 1 strawberry and applied copper nanoparticles (CuNPs) and selenium NPs (SeNPs) to study their effects on the growth, quality, photosynthetic parameter indexes, and physiological characteristics of strawberry plants under drought stress. The growth and photosynthesis of strawberry plants were significant adversely affected by moderate drought stress (DS, 60% field capacity (FC)) and severe drought stress (SS, 25% FC). Compared with normal water-holding conditions, the application of CuNPs, SeNPs, and their combination effectively increased the agronomic traits of strawberry plants; improved fruit quality; and enhanced the content of photosynthetic pigments (chlorophyll a, chlorophyll b, and total chlorophyll), photosynthetic characteristic parameters, chlorophyll fluorescence parameters, and water-use efficiency. In addition, the exogenous application of CuNPs and SeNPs improved the drought tolerance of plants by increasing the activities of antioxidant enzymes catalase, peroxidase, and superoxide dismutase, and decreasing the malondialdehyde content, with the following overall trend among the treatments: control < CuNPs < SeNPs < CuNPs + SeNPs. The results of the principal component analysis showed that the two extracted principal components could reflect 85.54% of the information of the original data, leaf photosynthetic pigments, photosynthetic characteristic parameters, chlorophyll fluorescence parameters, and strawberry agronomic traits indexes and could be used as the primary indexes for evaluating the improvement of strawberry growth by nanofertilizers under drought-stress conditions. Taken together, our results indicate that nanofertilizers have potential for improving the growth, quality, and physiological characteristics of strawberries under drought stress.
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Claims 12
Claim · model-written summary
Moderate drought stress adversely affected strawberry growth and photosynthesis.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae0 - Treatment
- moderate drought stress (DS, 60% field capacity (FC))e0
- Outcome
- growth and photosynthesise0
- Direction
- adversely affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“The growth and photosynthesis of strawberry plants were significant adversely affected by moderate drought stress (DS, 60% field capacity (FC))”
Claim · model-written summary
Severe drought stress adversely affected strawberry growth and photosynthesis.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- severe drought stress (SS, 25% FC)e0
- Outcome
- growth and photosynthesise0
- Direction
- adversely affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth and photosynthesis of strawberry plants were significant adversely affected by moderate drought stress (DS, 60% field capacity (FC)) and severe drought stress (SS, 25% FC).”
Claim · model-written summary
Copper nanoparticles increased strawberry agronomic traits and fruit quality relative to normal water-holding conditions.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- CuNPse0
- Outcome
- agronomic traits of strawberry plants; improved fruit qualitye0
- Direction
- increasede0
- Comparator
- normal water-holding conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with normal water-holding conditions, the application of CuNPs, SeNPs, and their combination effectively increased the agronomic traits of strawberry plants; improved fruit quality;”
Claim · model-written summary
Selenium nanoparticles increased strawberry agronomic traits and fruit quality relative to normal water-holding conditions.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- SeNPse0
- Outcome
- agronomic traits of strawberry plants; improved fruit qualitye0
- Direction
- increasede0
- Comparator
- normal water-holding conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with normal water-holding conditions, the application of CuNPs, SeNPs, and their combination effectively increased the agronomic traits of strawberry plants; improved fruit quality;”
Claim · model-written summary
Combined copper and selenium nanoparticles increased strawberry agronomic traits and fruit quality.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- their combinatione0
- Outcome
- agronomic traits of strawberry plants; improved fruit qualitye0
- Direction
- increasede0
- Comparator
- normal water-holding conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with normal water-holding conditions, the application of CuNPs, SeNPs, and their combination effectively increased the agronomic traits of strawberry plants; improved fruit quality;”
Claim · model-written summary
Nanoparticle applications enhanced photosynthetic pigments, photosynthetic and fluorescence parameters, and water-use efficiency.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- CuNPs, SeNPs, and their combinatione0
- Outcome
- content of photosynthetic pigments (chlorophyll a, chlorophyll b, and total chlorophyll), photosynthetic characteristic parameters, chlorophyll fluorescence parameters, and water-use efficiencye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of CuNPs, SeNPs, and their combination effectively increased the agronomic traits of strawberry plants; improved fruit quality; and enhanced the content of photosynthetic pigments (chlorophyll a, chlorophyll b, and total chlorophyll), photosynthetic characteristic parameters, chlorophyll fluorescence parameters, and water-use efficiency.”
Claim · model-written summary
Copper nanoparticles increased strawberry antioxidant enzyme activities under drought.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- CuNPse0
- Outcome
- activities of antioxidant enzymes catalase, peroxidase, and superoxide dismutasee0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the exogenous application of CuNPs and SeNPs improved the drought tolerance of plants by increasing the activities of antioxidant enzymes catalase, peroxidase, and superoxide dismutase”
t0“Strawberry”
Claim · model-written summary
Selenium nanoparticles increased strawberry antioxidant enzyme activities under drought.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- SeNPse0
- Outcome
- activities of antioxidant enzymes catalase, peroxidase, and superoxide dismutasee0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the exogenous application of CuNPs and SeNPs improved the drought tolerance of plants by increasing the activities of antioxidant enzymes catalase, peroxidase, and superoxide dismutase”
t0“Strawberry”
Claim · model-written summary
Nanoparticle application reduced strawberry malondialdehyde content under drought.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- CuNPs and SeNPse0
- Outcome
- malondialdehyde contente0
- Direction
- decreasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the exogenous application of CuNPs and SeNPs improved the drought tolerance of plants by increasing the activities of antioxidant enzymes catalase, peroxidase, and superoxide dismutase, and decreasing the malondialdehyde content”
t0“Strawberry”
Claim · model-written summary
The overall benefit increased in the order control, CuNPs, SeNPs, and combined CuNPs plus SeNPs.
- Taxon
- strawberryFragaria ×ananassat0
- Outcome
- overall trend among the treatmentse0
- Qualifier
- control < CuNPs < SeNPs < CuNPs + SeNPse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the following overall trend among the treatments: control < CuNPs < SeNPs < CuNPs + SeNPs.”
t0“Strawberry”
Claim · model-written summary
Two principal components reflected 85.54% of original data information.
- Taxon
- strawberryFragaria ×ananassat0
- Outcome
- information of the original datae0
- Value
- 85.54%e0
- Qualifier
- two extracted principal componentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the two extracted principal components could reflect 85.54% of the information of the original data”
t0“Strawberry”
Claim · model-written summary
The authors propose photosynthetic and agronomic indices as primary indicators for nanoparticle effects on drought-stressed strawberry growth.
- Taxon
- strawberryFragaria ×ananassae0
- Outcome
- primary indexes for evaluating the improvement of strawberry growthe0
- Qualifier
- drought-stress conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf photosynthetic pigments, photosynthetic characteristic parameters, chlorophyll fluorescence parameters, and strawberry agronomic traits indexes and could be used as the primary indexes for evaluating the improvement of strawberry growth by nanofertilizers under drought-stress conditions.”
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nanoparticle · physiology: photosynthesis · Fragaria x ananassa (strawberry)Results agree
3 papers in the same direction as this paper
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nanoparticle · physiology: oxidative · Fragaria x ananassa (strawberry)Results agree
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See all 7 papers →8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.