Abstract
The present investigation was conducted to assess the ameliorative effects of foliar-applied trehalose on growth, photosynthetic attributes, water relation parameters and oxidative defence mechanism in two maize cultivars under field water deficit conditions. Various components of the experiment comprised two maize cultivars (EV-1098 and Agaiti-2002), two water-stress levels (irrigation after 2 weeks and irrigation after 3 weeks during the entire period of growth), and two levels of trehalose (0 and 30 mm) and four replicates of each treatment. Water stress significantly reduced the plant biomass production, photosynthetic attributes and water relation parameters in both maize cultivars. In contrast, water stress considerably increased the leaf malondialdehyde (MDA) contents, the activities of antioxidant enzymes such as peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT), and the levels of non-enzymatic compounds such as ascorbic acid and tocopherols. In contrast, water stress caused a marked reduction in leaf phenolic contents. Foliar-applied trehalose significantly increased plant biomass production, and improved some key photosynthetic attributes and plant–water relation parameters. The ameliorative effect of exogenously applied trehalose was also observed on the activities of some key antioxidant enzymes (POD and CAT) and non-enzymatic compounds (tocopherols and phenolics). Overall, exogenously applied trehalose considerably improved drought tolerance of maize plants by up-regulating photosynthetic and water relation attributes as well as antioxidant defence mechanism.
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Claims 8
Claim · model-written summary
Water stress significantly reduced plant biomass production, photosynthetic attributes and water relation parameters in both maize cultivars.
- Treatment
- Water stresse3
- Outcome
- plant biomass production, photosynthetic attributes and water relation parameterse3
- Direction
- reducede3
- Setting
- field water deficit conditionse0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e0“in two maize cultivars under field water deficit conditions”
e3“Water stress significantly reduced the plant biomass production, photosynthetic attributes and water relation parameters in both maize cultivars”
Claim · model-written summary
Water stress considerably increased leaf malondialdehyde (MDA) contents in maize.
- Treatment
- water stresse4
- Outcome
- leaf malondialdehyde (MDA) contentse4
- Direction
- increasede4
- Setting
- field water deficit conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e0“in two maize cultivars under field water deficit conditions”
e4“In contrast, water stress considerably increased the leaf malondialdehyde (MDA) contents”
Claim · model-written summary
Water stress considerably increased the activities of peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT) in maize.
- Treatment
- water stresse5
- Outcome
- activities of antioxidant enzymes such as peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT)e5
- Direction
- increasede5
- Setting
- field water deficit conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e0“in two maize cultivars under field water deficit conditions”
e5“In contrast, water stress considerably increased the leaf malondialdehyde (MDA) contents, the activities of antioxidant enzymes such as peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT), and the levels of non-enzymatic compounds such as ascorbic acid and tocopherols”
Claim · model-written summary
Water stress considerably increased the levels of non-enzymatic compounds such as ascorbic acid and tocopherols in maize.
- Treatment
- water stresse5
- Outcome
- levels of non-enzymatic compounds such as ascorbic acid and tocopherolse5
- Direction
- increasede5
- Setting
- field water deficit conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e0“in two maize cultivars under field water deficit conditions”
e5“In contrast, water stress considerably increased the leaf malondialdehyde (MDA) contents, the activities of antioxidant enzymes such as peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT), and the levels of non-enzymatic compounds such as ascorbic acid and tocopherols”
Claim · model-written summary
Water stress markedly reduced leaf phenolic contents in maize.
- Treatment
- water stresse6
- Outcome
- leaf phenolic contentse6
- Direction
- reductione6
- Setting
- field water deficit conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e0“in two maize cultivars under field water deficit conditions”
e6“water stress caused a marked reduction in leaf phenolic contents”
Claim · model-written summary
Foliar-applied trehalose significantly increased plant biomass production in maize under water deficit.
- Treatment
- Foliar-applied trehalosee7
- Outcome
- plant biomass productione7
- Direction
- increasede7
- Setting
- field water deficit conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e0“in two maize cultivars under field water deficit conditions”
e7“Foliar-applied trehalose significantly increased plant biomass production”
Claim · model-written summary
Foliar-applied trehalose improved some key photosynthetic attributes of maize under water deficit.
- Treatment
- Foliar-applied trehalosee2
- Outcome
- some key photosynthetic attributese2
- Direction
- improvede2
- Setting
- field water deficit conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e0“in two maize cultivars under field water deficit conditions”
e2“Foliar-applied trehalose significantly increased plant biomass production, and improved some key photosynthetic attributes”
Claim · model-written summary
Exogenous trehalose increased the activities of some key antioxidant enzymes (POD and CAT) in maize.
- Treatment
- exogenously applied trehalosee2
- Outcome
- activities of some key antioxidant enzymes (POD and CAT)e2
- Direction
- increaseinferrede2
- Setting
- field water deficit conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e0“in two maize cultivars under field water deficit conditions”
e2“The ameliorative effect of exogenously applied trehalose was also observed on the activities of some key antioxidant enzymes (POD and CAT) and non-enzymatic compounds (tocopherols and phenolics)”
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See all 121 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.