Abstract
Zinc is a critical mineral nutrient that protects plant cells from salt-induced cell damage. We tested whether the application of Zn at various concentrations [0, 5, 10, or 20 mg kg-1(soil)] would protect almond (Prunus amygdalus) seedlings subjected to salt stress (0, 30, 60, or 90 mM NaCl). All concentrations of Zn, particularly the application of 10 and 20 mg kg-1, increased the net photosynthetic rate, stomatal conductance, the maximal efficiency of PSII photochemistry, and a proline content in almond seedlings grown under salt stress; 20 mg(Zn) kg-1 was the most effective concentration. The activity of superoxide dismutase showed a significant increase under salinity stress and Zn application. The catalase activity decreased in the salt-treated seedlings, but recovered after the Zn treatment. Our results proved the positive effects of Zn on antioxidant enzyme activity scavenging the reactive oxygen species produced under salt stress.
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Claims 5
Claim · model-written summary
Zinc increased almond net photosynthetic rate, stomatal conductance, PSII efficiency and proline under salt stress.
- Taxon
- almond
Prunus dulcise0 - Treatment
- application of 10 and 20 mg kg-1e0
- Outcome
- net photosynthetic rate, stomatal conductance, the maximal efficiency of PSII photochemistrye0
- Direction
- increasede0
- Qualifier
- under salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All concentrations of Zn, particularly the application of 10 and 20 mg kg-1, increased the net photosynthetic rate, stomatal conductance, the maximal efficiency of PSII photochemistry, and a proline content in almond seedlings grown under salt stress”
Claim · model-written summary
The 20 mg(Zn) kg-1 application was the most effective concentration for the reported almond physiological responses.
- Taxon
- almondPrunus dulcist0
- Treatment
- 20 mg(Zn) kg-1e0
- Outcome
- most effective concentratione0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“20 mg(Zn) kg-1 was the most effective concentration”
t0“almond”
Claim · model-written summary
Salinity stress and zinc application significantly increased superoxide dismutase activity in almond seedlings.
- Taxon
- almondPrunus dulcist0
- Treatment
- salinity stress and Zn applicatione0
- Outcome
- activity of superoxide dismutasee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activity of superoxide dismutase showed a significant increase under salinity stress and Zn application”
t0“almond”
Claim · model-written summary
Salt treatment decreased catalase activity in almond seedlings.
- Taxon
- almondPrunus dulcist0
- Treatment
- salt-treatede0
- Outcome
- catalase activitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The catalase activity decreased in the salt-treated seedlings”
t0“almond”
Claim · model-written summary
Zinc treatment restored catalase activity in salt-treated almond seedlings.
- Taxon
- almondPrunus dulcist0
- Treatment
- Zn treatmente0
- Outcome
- recoverede0
- Direction
- recoverede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but recovered after the Zn treatment”
t0“almond”
The same questions in other papers
salinity · physiology: antioxidant enzymes · Prunus dulcis (almond)Positive and negative results
1 in the opposite direction
- positive
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.