Abstract
Abstract Soil salinity is established as one of the major environmental problems, decreasing crop productivity worldwide, thereby threatening sustainable agriculture. In the present study, we evaluated the effects of titanium dioxide nanoparticles (nTiO 2 ) for ameliorating soil salinity in broad bean, an important leguminous crop. As nTiO 2 is known to have pro‐oxidant and antioxidant properties, the effects of three different nTiO 2 concentrations (0·01%, 0·02% and 0·03%) were compared with respect to plant growth and stress responses. The 0·01% nTiO 2 application significantly increased shoot length, leaf area and root dry weight of plants under normal conditions. These growth‐promoting effects were simultaneous with increased levels of chlorophyll b, soluble sugars and proline and enhanced activities of antioxidant enzymes. Under saline soil conditions, although proline level and enzymatic antioxidant activities were increased, plant growth significantly reduced. The 0·01% nTiO 2 supplementation significantly increased the activities of enzymatic antioxidants and levels of soluble sugars, amino acids and proline in salt‐affected plants versus plants subjected to salinity alone. Thus, the increased antioxidant enzyme activities contributed to the observed reduction in hydrogen peroxide and malondialdehyde contents, while enhanced levels of proline and other metabolites contributed to osmoprotection, collectively resulting in significant plant growth improvement under salinity. Furthermore, nTiO 2 ‐mediated positive effects were concentration dependent with 0·01% nTiO 2 being the most effective, whereas 0·02% showed an intermediate response and 0·03% was almost ineffective under both control and saline soil conditions. Our findings provide a foundation for nTiO 2 application in improving growth of plants cultivated on naturally contaminated saline soils. Copyright © 2017 John Wiley & Sons, Ltd.
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Claims 9
Claim · model-written summary
At 0·01%, nTiO 2 increased shoot length, leaf area and root dry weight under normal conditions.
- Taxon
- Broad Bean Plants
Vicia fabat0 - Treatment
- 0·01% nTiO 2 applicatione0
- Outcome
- shoot length, leaf area and root dry weighte0
- Direction
- increasede0
- Qualifier
- under normal conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 0·01% nTiO 2 application significantly increased shoot length, leaf area and root dry weight of plants under normal conditions”
t0“Broad Bean Plants”
Claim · model-written summary
The growth promoting effects coincided with higher chlorophyll b, soluble sugars and proline.
- Taxon
- Broad Bean PlantsVicia fabat0
- Outcome
- levels of chlorophyll b, soluble sugars and prolinee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These growth‐promoting effects were simultaneous with increased levels of chlorophyll b, soluble sugars and proline”
t0“Broad Bean Plants”
Claim · model-written summary
The growth promoting effects coincided with enhanced antioxidant enzyme activities.
- Taxon
- Broad Bean PlantsVicia fabat0
- Outcome
- activities of antioxidant enzymese0
- Direction
- enhancede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These growth‐promoting effects were simultaneous with increased levels of chlorophyll b, soluble sugars and proline and enhanced activities of antioxidant enzymes”
t0“Broad Bean Plants”
Claim · model-written summary
Saline soil increased proline and enzymatic antioxidant activities.
- Taxon
- Broad Bean PlantsVicia fabat0
- Treatment
- saline soil conditionse0
- Outcome
- proline level and enzymatic antioxidant activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under saline soil conditions, although proline level and enzymatic antioxidant activities were increased”
t0“Broad Bean Plants”
Claim · model-written summary
Saline soil reduced plant growth significantly.
- Taxon
- Broad Bean PlantsVicia fabat0
- Treatment
- saline soil conditionse0
- Outcome
- plant growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under saline soil conditions, although proline level and enzymatic antioxidant activities were increased, plant growth significantly reduced”
t0“Broad Bean Plants”
Claim · model-written summary
Under salinity, 0·01% nTiO 2 increased enzymatic antioxidants and soluble sugars and amino acids versus salinity alone.
- Taxon
- Broad Bean PlantsVicia fabat0
- Treatment
- 0·01% nTiO 2 supplementatione0
- Outcome
- activities of enzymatic antioxidants and levels of soluble sugars, amino acids and prolinee0
- Direction
- increasede0
- Comparator
- plants subjected to salinity alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 0·01% nTiO 2 supplementation significantly increased the activities of enzymatic antioxidants and levels of soluble sugars, amino acids and proline in salt‐affected plants versus plants subjected to salinity alone”
t0“Broad Bean Plants”
Claim · model-written summary
Increased antioxidant enzyme activities were interpreted as contributing to reduced hydrogen peroxide and malondialdehyde.
- Taxon
- Broad Bean PlantsVicia fabat0
- Outcome
- hydrogen peroxide and malondialdehyde contentse0
- Direction
- reductione0
- Qualifier
- increased antioxidant enzyme activitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increased antioxidant enzyme activities contributed to the observed reduction in hydrogen peroxide and malondialdehyde contents”
t0“Broad Bean Plants”
Claim · model-written summary
Higher proline and other metabolites were interpreted as contributing to osmoprotection and improved growth under salinity.
- Taxon
- Broad Bean PlantsVicia fabat0
- Outcome
- plant growth improvemente0
- Direction
- improvemente0
- Qualifier
- enhanced levels of proline and other metabolitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced levels of proline and other metabolites contributed to osmoprotection, collectively resulting in significant plant growth improvement under salinity”
t0“Broad Bean Plants”
Claim · model-written summary
The 0·01% dose was most effective, 0·02% intermediate, and 0·03% almost ineffective under control and saline conditions.
- Taxon
- Broad Bean PlantsVicia fabat0
- Outcome
- most effectivee0
- Direction
- most effectivee0
- Qualifier
- under both control and saline soil conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0·01% nTiO 2 being the most effective, whereas 0·02% showed an intermediate response and 0·03% was almost ineffective under both control and saline soil conditions”
t0“Broad Bean Plants”
The same questions in other papers
salinity · growth · Vicia faba (faba bean)Results differ
47 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- positive
47 papers more in this group
See all 51 papers →soil · growth · Vicia faba (faba bean)Results agree
1 paper in the same direction as this paper
- negative
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.