Abstract
ABSTRACT Drought stress (DS) in arid and semi‐arid ecosystems poses a significant barrier to pomegranate cultivation, profoundly affecting fruit quality and agricultural productivity. The primary objective of this study was to investigate the effects of DS at levels of 100%, 70%, 40%, and 20% field capacity (FC), and the foliar application of Jasmonic acid (JA) at concentrations of 0, 5, 25, and 50 μM, on the physiological and biochemical traits of pomegranate leaves and fruits over two consecutive years. The evaluated traits included relative water content (RWC), membrane stability index (MSI), chlorophyll index (SPAD), photochemical efficiency of photosystem II ( F V / F M ), hydrogen peroxide (H 2 O 2 ), and superoxide dismutase activity (SOD) in leaves, as well as total phenolic compounds (TPC), total antioxidant capacity (TAC), anthocyanins, total soluble solids (TSS), and weight loss in pomegranate fruits. The results demonstrated that DS, particularly at 20% field capacity, significantly reduced RWC, MSI, SPAD, and F V / F M , whereas increasing H 2 O 2 and SOD levels. Jasmonic acid application effectively mitigated these adverse effects, with higher concentrations (25 and 50 μM) markedly improving the plant's physiological stability. In fruits, both DS and JA application enhanced TPC, TAC, anthocyanins, and TSS. Conversely, in fruit, DS increased weight loss, which was less pronounced during fruit sprayed with JA. The beneficial effects of JA, especially in higher JA concentrations, were also observed in both years, mainly under severe DS (FC40 and FC20), highlighting its crucial role in the improvement of mechanisms related to plant tolerance under water deficit. These results accentuate the effectiveness of JA in improving the physiological and biochemical responses of pomegranate under DS and provide an affordable alternative for sustainable management of crops in arid and semi‐arid areas.
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Claims 7
Claim · model-written summary
Severe drought reduced leaf relative water content, membrane stability, chlorophyll index and photosystem II efficiency.
- Taxon
- Pomegranate
Punica granatumt0 - Treatment
- DS, particularly at 20% field capacitye0
- Outcome
- RWC, MSI, SPAD, and F V / F Me0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pomegranate”
e0“DS, particularly at 20% field capacity, significantly reduced RWC, MSI, SPAD, and F V / F M”
Claim · model-written summary
Drought increased leaf hydrogen peroxide and superoxide dismutase levels.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- DSt1
- Outcome
- H 2 O 2 and SOD levelse0
- Direction
- increasinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pomegranate”
e0“whereas increasing H 2 O 2 and SOD levels”
t1“Drought stress (DS) in arid and semi‐arid ecosystems”
Claim · model-written summary
Jasmonic acid mitigated adverse drought effects on plant physiology.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- Jasmonic acid applicatione0
- Outcome
- plant's physiological stabilitye0
- Direction
- improvinge0
- Qualifier
- 25 and 50 μMe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pomegranate”
e0“Jasmonic acid application effectively mitigated these adverse effects, with higher concentrations (25 and 50 μM) markedly improving the plant's physiological stability”
Claim · model-written summary
Drought increased fruit phenolics, antioxidant capacity, anthocyanins and soluble solids.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- DSe0
- Outcome
- TPC, TAC, anthocyanins, and TSSe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pomegranate”
e0“In fruits, both DS and JA application enhanced TPC, TAC, anthocyanins, and TSS”
Claim · model-written summary
Jasmonic acid increased fruit phenolics, antioxidant capacity, anthocyanins and soluble solids.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- JA applicatione0
- Outcome
- TPC, TAC, anthocyanins, and TSSe0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pomegranate”
e0“In fruits, both DS and JA application enhanced TPC, TAC, anthocyanins, and TSS”
Claim · model-written summary
Drought increased fruit weight loss.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- DSe0
- Outcome
- weight losse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pomegranate”
e0“in fruit, DS increased weight loss”
Claim · model-written summary
Jasmonic acid spray reduced drought-associated fruit weight loss.
- Taxon
- PomegranatePunica granatumt0
- Treatment
- fruit sprayed with JAe0
- Outcome
- weight losse0
- Direction
- less pronouncede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Pomegranate”
e0“DS increased weight loss, which was less pronounced during fruit sprayed with JA”
The same questions in other papers
jasmonic acid · quality: phytochemicals · Punica granatum (pomegranate)Positive and negative results
1 in the opposite direction
- no effect
drought · quality: phytochemicals · Punica granatum (pomegranate)Results differ
1 in the opposite direction
- negative
drought · physiology: antioxidant enzymes · Punica granatum (pomegranate)Results differ
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
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drought · physiology: water · Punica granatum (pomegranate)Positive and negative results
1 in the opposite direction
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drought · quality: postharvest · Punica granatum (pomegranate)Positive and negative results
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- positive
- negative
application · quality: postharvest · Punica granatum (pomegranate)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.