Abstract
We determined time course changes of photochemical and antioxidant activity during the induction of strong crassulacean acid metabolism (CAM) in Aloe vera L. plants grown under salt and drought stress. We found that the strong CAM was induced during 25-30days of drought alone treatment. After 25-30days, we showed the withdrawal of strong CAM back to constitutive CAM background under the combination of simultaneous drought and salt stress, which coincided with the accumulation of malondialdehyde, and the decrease in the contents of endogenous nitric oxide (NO) and non-enzymatic antioxidants. At the same time, the chloroplast ultrastructure was damaged with a parallel accumulation of reactive oxygen species, and the whole photosynthetic electron transport flux was impaired by combined stress treatment. In conclusion, the changes in CAM expression parameters was attended by a similar pattern of antioxidant and photochemical change in Aloe plants subjected to only drought or combined stress.
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Claims 7
Claim · model-written summary
Drought alone induced strong CAM after 25-30days.
Aloe veraNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“strong CAM was induced during 25-30days of drought alone treatment”
e1“Aloe vera L. plants”
Claim · model-written summary
Combined drought and salt stress reversed strong CAM to the constitutive background after 25-30days.
- Treatment
- combination of simultaneous drought and salt stresse0
- Outcome
- strong CAMe0
- Direction
- withdrawale0
- Value
- 25-30dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 25-30days, we showed the withdrawal of strong CAM back to constitutive CAM background under the combination of simultaneous drought and salt stress”
e1“Aloe vera L. plants”
Claim · model-written summary
Combined stress coincided with malondialdehyde accumulation.
- Treatment
- combination of simultaneous drought and salt stresse1
- Outcome
- accumulation of malondialdehydee1
- Direction
- accumulatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aloe vera L. plants”
e1“under the combination of simultaneous drought and salt stress, which coincided with the accumulation of malondialdehyde”
Claim · model-written summary
Combined stress coincided with lower endogenous nitric oxide and non-enzymatic antioxidants.
- Treatment
- combination of simultaneous drought and salt stresse1
- Outcome
- contents of endogenous nitric oxide (NO) and non-enzymatic antioxidantse1
- Direction
- decreasee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aloe vera L. plants”
e1“under the combination of simultaneous drought and salt stress, which coincided with the accumulation of malondialdehyde, and the decrease in the contents of endogenous nitric oxide (NO) and non-enzymatic antioxidants”
Claim · model-written summary
Combined stress damaged chloroplast ultrastructure.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aloe vera L. plants”
e1“the chloroplast ultrastructure was damaged with a parallel accumulation of reactive oxygen species, and the whole photosynthetic electron transport flux was impaired by combined stress treatment”
Claim · model-written summary
Reactive oxygen species accumulated under combined stress.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aloe vera L. plants”
e1“the chloroplast ultrastructure was damaged with a parallel accumulation of reactive oxygen species, and the whole photosynthetic electron transport flux was impaired by combined stress treatment”
Claim · model-written summary
Combined stress impaired whole photosynthetic electron transport flux.
- Treatment
- combined stress treatmente1
- Outcome
- whole photosynthetic electron transport fluxe1
- Direction
- impairede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Aloe vera L. plants”
e1“the whole photosynthetic electron transport flux was impaired by combined stress treatment”
The same questions in other papers
drought · molecular: metabolites · Aloe vera (aloe-vera)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
salinity · molecular: metabolites · Aloe vera (aloe-vera)Positive and negative results
3 in the opposite direction
- positive
- positive
- 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.