Abstract
A pot experiment was conducted to investigate the role of methyl jasmonate (MeJA) in alleviation of the adverse effects of salinity on cowpea. Seeds were soaked in 0, 25 and 50 µM MeJA for 20 h and then the seedlings were irrigated with different concentrations of NaCl (0, 50 and 100 mM). Salt stress markedly decreased growth attributes namely shoot length, shoot and root dry weight and leaf area. NaCl stress also significantly reduced chlorophyll value, stomatal conductance, net photosynthetic rate, total soluble proteins and relative water content (RWC). Furthermore, salinity noticeably increased proline and total soluble sugars content. Nonetheless, seeds treatment with MeJA especially 50 µM, improved the growth of cowpea plants by increasing chlorophyll value, stomatal conductance, net photosynthetic rate, total soluble proteins, proline accumulation, total soluble sugars and RWC under salt stress conditions. Thus results indicate that pretreatment of seeds with MeJA could be used as an effective technique for improving cowpea plants tolerance to salt stress.
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Claims 8
Claim · model-written summary
Salt stress reduced cowpea shoot length, shoot and root dry weight, and leaf area.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- NaCle2
- Outcome
- shoot length, shoot and root dry weight and leaf areae0
- Direction
- decreasede0
- Comparator
- 0e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress markedly decreased growth attributes namely shoot length, shoot and root dry weight and leaf area.”
e1“salinity on cowpea”
e2“seedlings were irrigated with different concentrations of NaCl (0, 50 and 100 mM)”
Claim · model-written summary
NaCl stress reduced cowpea chlorophyll value, stomatal conductance, and net photosynthetic rate.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- NaCle0
- Outcome
- chlorophyll value, stomatal conductance, net photosynthetic ratee0
- Direction
- reducede0
- Comparator
- 0e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl stress also significantly reduced chlorophyll value, stomatal conductance, net photosynthetic rate, total soluble proteins and relative water content (RWC).”
e1“salinity on cowpea”
e2“seedlings were irrigated with different concentrations of NaCl (0, 50 and 100 mM)”
Claim · model-written summary
NaCl stress reduced cowpea total soluble proteins and relative water content.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- NaCle0
- Outcome
- total soluble proteins and relative water content (RWC)e0
- Direction
- reducede0
- Comparator
- 0e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NaCl stress also significantly reduced chlorophyll value, stomatal conductance, net photosynthetic rate, total soluble proteins and relative water content (RWC).”
e1“salinity on cowpea”
e2“seedlings were irrigated with different concentrations of NaCl (0, 50 and 100 mM)”
Claim · model-written summary
Salinity increased cowpea proline and total soluble sugars content.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- NaCle2
- Outcome
- proline and total soluble sugars contente0
- Direction
- increasede0
- Comparator
- 0e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“salinity noticeably increased proline and total soluble sugars content.”
e1“salinity on cowpea”
e2“seedlings were irrigated with different concentrations of NaCl (0, 50 and 100 mM)”
Claim · model-written summary
MeJA seed treatment, especially 50 µM, improved cowpea growth under salt stress.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- MeJA especially 50 µMe0
- Outcome
- growth of cowpea plantse0
- Direction
- improvede0
- Comparator
- 0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds treatment with MeJA especially 50 µM, improved the growth of cowpea plants”
e1“Seeds were soaked in 0, 25 and 50 µM MeJA for 20 h”
Claim · model-written summary
MeJA seed treatment increased cowpea chlorophyll value, stomatal conductance, and net photosynthetic rate under salt stress.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- MeJAe0
- Outcome
- chlorophyll value, stomatal conductance, net photosynthetic ratee0
- Direction
- increasinge0
- Qualifier
- under salt stress conditionse0
- Comparator
- 0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds treatment with MeJA especially 50 µM, improved the growth of cowpea plants by increasing chlorophyll value, stomatal conductance, net photosynthetic rate, total soluble proteins, proline accumulation, total soluble sugars and RWC under salt stress conditions.”
e1“Seeds were soaked in 0, 25 and 50 µM MeJA for 20 h”
Claim · model-written summary
MeJA seed treatment increased cowpea total soluble proteins and RWC under salt stress.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- MeJAe0
- Outcome
- total soluble proteinse0
- Direction
- increasinge0
- Qualifier
- under salt stress conditionse0
- Comparator
- 0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds treatment with MeJA especially 50 µM, improved the growth of cowpea plants by increasing chlorophyll value, stomatal conductance, net photosynthetic rate, total soluble proteins, proline accumulation, total soluble sugars and RWC under salt stress conditions.”
e1“Seeds were soaked in 0, 25 and 50 µM MeJA for 20 h”
Claim · model-written summary
MeJA seed treatment increased cowpea proline accumulation and total soluble sugars under salt stress.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- MeJAe0
- Outcome
- proline accumulation, total soluble sugars and RWCe0
- Direction
- increasinge0
- Qualifier
- under salt stress conditionse0
- Comparator
- 0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seeds treatment with MeJA especially 50 µM, improved the growth of cowpea plants by increasing chlorophyll value, stomatal conductance, net photosynthetic rate, total soluble proteins, proline accumulation, total soluble sugars and RWC under salt stress conditions.”
e1“Seeds were soaked in 0, 25 and 50 µM MeJA for 20 h”
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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.