Abstract
Background and Objective: Water stress is a constraint to the production of African Eggplant. Growth, biochemical, photosynthetic pigments, anti-oxidative defense system responses of pot-grown eggplant to water stress and pre-stress salicylic acid (SA) treatments were investigated. Materials and Methods: Treatments consisted of pre-stress foliar application of 0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 mM of SA on plants exposed to 10 or 20 days of water-deficit stress and water sufficient control. Randomized complete design with three replicates was used. Results: Underwater stress, growth was reduced but anti-oxidant defensive systems enhanced. However, pre-stress foliar application of SA increased growth and further enhanced proline, phenolics, endogenous SA, leakage of electrolytes and activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD) and ascorbate peroxidase (APX) to the same level as water sufficient control plants. Conclusion: The study concluded that pre-stress foliar application of SA protects water-stressed S. macrocarpon against oxidative damage at 2.0 mM concentration.
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Claims 7
Claim · model-written summary
Water stress reduced growth of African eggplant seedlings relative to water sufficient control plants.
- Taxon
- eggplant
Solanum melongenae0 - Treatment
- Underwater stresse1
- Outcome
- growthe1
- Direction
- reducede1
- Comparator
- water sufficient control plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pot-grown eggplant to water stress”
e1“Underwater stress, growth was reduced but anti-oxidant defensive systems enhanced”
e2“to the same level as water sufficient control plants”
Claim · model-written summary
Water stress enhanced anti-oxidant defensive systems in eggplant seedlings.
- Taxon
- eggplantSolanum melongenae0
- Treatment
- Underwater stresse1
- Outcome
- anti-oxidant defensive systemse1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pot-grown eggplant to water stress”
e1“Underwater stress, growth was reduced but anti-oxidant defensive systems enhanced”
Claim · model-written summary
Pre-stress foliar application of salicylic acid increased growth of water-stressed eggplant seedlings.
- Taxon
- eggplantSolanum melongenae0
- Treatment
- pre-stress foliar application of SAe3
- Outcome
- growthe3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pot-grown eggplant to water stress”
e3“pre-stress foliar application of SA increased growth”
Claim · model-written summary
Pre-stress salicylic acid further enhanced proline, phenolics and endogenous SA, reaching the level of water sufficient control plants.
- Taxon
- eggplantSolanum melongenae0
- Treatment
- pre-stress foliar application of SAe3
- Outcome
- proline, phenolics, endogenous SAe4
- Direction
- enhancede4
- Qualifier
- to the same level as water sufficient control plantse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pot-grown eggplant to water stress”
e3“pre-stress foliar application of SA increased growth”
e4“further enhanced proline, phenolics, endogenous SA”
e2“to the same level as water sufficient control plants”
Claim · model-written summary
Pre-stress salicylic acid further enhanced leakage of electrolytes and activities of SOD and CAT in water-stressed eggplant seedlings.
- Taxon
- eggplantSolanum melongenae0
- Treatment
- pre-stress foliar application of SAe3
- Outcome
- leakage of electrolytes and activities of superoxide dismutase (SOD), catalase (CAT)e5
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pot-grown eggplant to water stress”
e3“pre-stress foliar application of SA increased growth”
e4“further enhanced proline, phenolics, endogenous SA”
e5“leakage of electrolytes and activities of superoxide dismutase (SOD), catalase (CAT)”
Claim · model-written summary
Pre-stress salicylic acid further enhanced peroxidase and ascorbate peroxidase activities in water-stressed eggplant seedlings.
- Taxon
- eggplantSolanum melongenae0
- Treatment
- pre-stress foliar application of SAe3
- Outcome
- peroxidase (POD) and ascorbate peroxidase (APX)e6
- Direction
- enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pot-grown eggplant to water stress”
e3“pre-stress foliar application of SA increased growth”
e4“further enhanced proline, phenolics, endogenous SA”
e6“peroxidase (POD) and ascorbate peroxidase (APX)”
Claim · model-written summary
Pre-stress foliar salicylic acid at 2.0 mM protects water-stressed S. macrocarpon against oxidative damage.
- Taxon
- S. macrocarpone7
- Treatment
- pre-stress foliar application of SAe7
- Outcome
- oxidative damagee7
- Direction
- protectse7
- Qualifier
- at 2.0 mM concentratione7
Not reportedComparator
Verbatim
e7“pre-stress foliar application of SA protects water-stressed S. macrocarpon against oxidative damage at 2.0 mM concentration”
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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.