Abstract
Biotic and abiotic stresses exert a considerable influence on the growth and physiology of plants. Water stress is one of the most important abiotic stress factors. The study was carried out to elucidate the effect of drought stress on growth, physiology and antioxidant enzyme activity of Cassia occidentalis experiencing four water regimes with soil relative water content ranging from 65% to 12%. Plants were grown in pots and treated with three irrigation levels (100ml, 200ml and 300ml).The experiment was laid out in complete randomized design (CRD) with three replicates. Data on growth, physiological parameters and antioxidant enzyme activity were recorded and analyzed statistically. Physiological parameters like leaf area index, biomass accumulation, relative water content and membrane stability index decreased significantly with decrease in water level, but mild level of water treatment enhanced the growth. The plant exhibited an increase in antioxidant enzyme activity under stressed condition which proves its tolerance against drought. Thus it can be concluded that Cassia occidentalis plant is able to tolerate a limited water levels by enhancing its antioxidant defense but excessive drought markedly affected the enzyme activity and so depleted the plant growth.
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Claims 7
Claim · model-written summary
Decreasing water level significantly decreased leaf area index and biomass accumulation in Cassia occidentalis.
- Taxon
- Cassia occidentalis
_Senna_occidentalis_-_Habit_-_Les_Martels%2C_Giroussens_Tarn.jpg?width=60)
Senna occidentalist0 - Treatment
- decrease in water levele0
- Outcome
- leaf area index, biomass accumulatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Senna_occidentalis_-_Habit_-_Les_Martels%2C_Giroussens_Tarn.jpg?width=500)
Verbatim
e0“Physiological parameters like leaf area index, biomass accumulation, relative water content and membrane stability index decreased significantly with decrease in water level”
t0“Cassia occidentalis”
Claim · model-written summary
Decreasing water level significantly decreased relative water content and membrane stability index in Cassia occidentalis.
- Taxon
- Cassia occidentalisSenna occidentalist0
- Treatment
- decrease in water levele0
- Outcome
- relative water content and membrane stability indexe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological parameters like leaf area index, biomass accumulation, relative water content and membrane stability index decreased significantly with decrease in water level”
t0“Cassia occidentalis”
Claim · model-written summary
Mild water treatment enhanced Cassia occidentalis growth.
- Taxon
- Cassia occidentalisSenna occidentalist0
- Treatment
- mild level of water treatmente0
- Outcome
- growthe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mild level of water treatment enhanced the growth”
t0“Cassia occidentalis”
Claim · model-written summary
Stress increased antioxidant enzyme activity in Cassia occidentalis.
- Taxon
- Cassia occidentalisSenna occidentalist0
- Treatment
- stressed conditione0
- Outcome
- antioxidant enzyme activitye0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant exhibited an increase in antioxidant enzyme activity under stressed condition”
t0“Cassia occidentalis”
Claim · model-written summary
The authors conclude that enhanced antioxidant defense allows Cassia occidentalis to tolerate limited water levels.
- Taxon
- Cassia occidentalisSenna occidentalise0
- Outcome
- tolerate a limited water levelse0
- Qualifier
- by enhancing its antioxidant defensee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassia occidentalis plant is able to tolerate a limited water levels by enhancing its antioxidant defense”
Claim · model-written summary
Excessive drought markedly affected Cassia occidentalis enzyme activity, with no direction stated.
- Taxon
- Cassia occidentalisSenna occidentalist0
- Treatment
- excessive droughte0
- Outcome
- enzyme activitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“excessive drought markedly affected the enzyme activity and so depleted the plant growth”
t0“Cassia occidentalis”
Claim · model-written summary
Excessive drought depleted Cassia occidentalis growth.
- Taxon
- Cassia occidentalisSenna occidentalist0
- Treatment
- excessive droughte0
- Outcome
- plant growthe0
- Direction
- depletede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“excessive drought markedly affected the enzyme activity and so depleted the plant growth”
t0“Cassia occidentalis”
The same questions in other papers
irrigation · physiology: water · Senna occidentalis (coffee senna)Results agree
1 paper in the same direction as this paper
- negative
irrigation · growth · Senna occidentalis (coffee senna)Results agree
1 paper in the same direction as this paper
- positive
drought · growth · Senna occidentalis (coffee senna)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.