Abstract
Environmental stresses, especially salinity can reduce plant growth and yield productivity of plants. But nutrient fertilization is a good strategy for reducing the destructive effects of salinity in plants. Therefore, the present study was conducted to investigate the effect of zinc (Zn) on plant growth, and biochemical responses of Aloe vera grown in salt stress. A factorial experiment in a completely randomized design was conducted with three Zn levels (0, 5, 10 mg kg−1 soil) and seven NaCl levels (0, 30, 60, 90, 120, 150, 180 mM) at four replications. With increasing NaCl levels, leaf fresh weight, gel content, and total chlorophyll content significantly decreased but antioxidant enzymes activity such as ascorbate peroxidase (APX), peroxidase (POD), catalase (CAT), superoxide dismutase (SOD) and proline content increased as compared with the control. However, application of Zn fertilizer enhanced plant growth (leaf fresh weight and % gel) and some antioxidant enzyme activity. In conclusion, addition of 5 mg Zn kg−1 can be recommended for protecting Aloe vera under salinity conditions by alleviating the damages induced by salt stress on plant growth and oxidative stress.
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Claims 6
Claim · model-written summary
Increasing NaCl significantly decreased leaf fresh weight, gel content and total chlorophyll content relative to control.
- Treatment
- increasing NaCl levelse0
- Outcome
- leaf fresh weight, gel content, and total chlorophyll contente0
- Direction
- decreasede0
- Comparator
- controle0
Aloe veraOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increasing NaCl levels, leaf fresh weight, gel content, and total chlorophyll content significantly decreased but antioxidant enzymes activity such as ascorbate peroxidase (APX), peroxidase (POD), catalase (CAT), superoxide dismutase (SOD) and proline content increased as compared with the control.”
t0“Aloe vera”
Claim · model-written summary
Increasing NaCl increased antioxidant enzyme activity relative to control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“antioxidant enzymes activity such as ascorbate peroxidase (APX), peroxidase (POD), catalase (CAT), superoxide dismutase (SOD) and proline content increased as compared with the control.”
e1“With increasing NaCl levels”
t0“Aloe vera”
Claim · model-written summary
Increasing NaCl increased proline content relative to control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline content increased as compared with the control.”
e1“With increasing NaCl levels”
t0“Aloe vera”
Claim · model-written summary
Zn fertilizer enhanced leaf fresh weight and gel percentage.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Zn fertilizer enhanced plant growth (leaf fresh weight and % gel)”
t0“Aloe vera”
Claim · model-written summary
Zn fertilizer enhanced some antioxidant enzyme activity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of Zn fertilizer enhanced plant growth (leaf fresh weight and % gel) and some antioxidant enzyme activity”
t0“Aloe vera”
Claim · model-written summary
The authors recommend 5 mg Zn kg−1 to protect Aloe vera under salinity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“addition of 5 mg Zn kg−1 can be recommended for protecting Aloe vera under salinity conditions”
The same questions in other papers
sodium chloride · physiology: pigments · Aloe vera (aloe-vera)Results agree
1 paper in the same direction as this paper
- no effect
zinc atom · growth · Aloe vera (aloe-vera)Results agree
1 paper in the same direction as this paper
- positive
fertilization · growth · Aloe vera (aloe-vera)Positive and negative results
10 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
8 papers more in this group
See all 12 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.