Abstract
Cowpea (Vigna unguiculata L.) is one of the major vegetable crops cultivated in tropical conditions. Two varieties of cowpea, i.e., Vigna unguiculata L.cv Kanakamony and cv Pusakomal were selected for the present study. The changes in lipid peroxidation, ascorbic acid content and activities of enzymatic antioxidants associated with drought stress were determined. A high level of lipid peroxidation was observed in test plants subjected to water stress. The Pusakomal leaves with severe stress showed 2.7 fold increase in TBARS compared to control and 1.2 fold to that of Kanakamony The drought tolerant variety showed significant increase in the activities of peroxidase and catalase on exposure to drought stress. Kanakamony leaves in severe stress possess 1.09 times increase in peroxidase and 1.8 times increase in catalase activity than Pusakomal. The concentration of ascorbic acid in test plants depleted with increased drought stress in both varieties. While the leaves of tolerant variety in severe stress showed 1.13 times higher ascorbic acid content than Pusakomal. Among the two varieties, Kanakamony possess the best antioxidant system to tolerate drought stress. This could limit cellular damage caused by active oxygen species, during waterdeficit. The variety Pusakomal was relatively poor in these adaptations.
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Claims 12
Claim · model-written summary
Water-stressed cowpea showed high lipid peroxidation.
- Taxon
- cowpea
Vigna unguiculatae1 - Treatment
- water stresse0
- Outcome
- lipid peroxidatione0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A high level of lipid peroxidation was observed in test plants subjected to water stress.”
e1“Two varieties of cowpea”
Claim · model-written summary
Severely stressed Pusakomal leaves had a 2.7 fold increase in TBARS versus control.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- Pusakomale0
- Organ / stage
- leavese0
- Treatment
- severe stresse0
- Outcome
- TBARSe0
- Direction
- increasee0
- Value
- 2.7 folde0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Pusakomal leaves with severe stress showed 2.7 fold increase in TBARS compared to control”
e1“Two varieties of cowpea”
Claim · model-written summary
Severely stressed Pusakomal leaves had 1.2 fold TBARS relative to Kanakamony.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- Pusakomale0
- Organ / stage
- leavese0
- Outcome
- TBARSe0
- Value
- 1.2 folde0
- Comparator
- Kanakamonye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Pusakomal leaves with severe stress showed 2.7 fold increase in TBARS compared to control and 1.2 fold to that of Kanakamony”
e1“Two varieties of cowpea”
Claim · model-written summary
The drought-tolerant cowpea variety significantly increased peroxidase activity under drought stress.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- drought stresse0
- Outcome
- activities of peroxidasee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The drought tolerant variety showed significant increase in the activities of peroxidase and catalase on exposure to drought stress.”
e1“Two varieties of cowpea”
Claim · model-written summary
The drought-tolerant cowpea variety significantly increased catalase activity under drought stress.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- drought stresse0
- Outcome
- catalasee0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The drought tolerant variety showed significant increase in the activities of peroxidase and catalase on exposure to drought stress.”
e1“Two varieties of cowpea”
Claim · model-written summary
Under severe stress, Kanakamony leaves had 1.09 times higher peroxidase activity than Pusakomal.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- Kanakamonye0
- Organ / stage
- leavese0
- Outcome
- peroxidasee0
- Direction
- increasee0
- Value
- 1.09 timese0
- Comparator
- Pusakomale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kanakamony leaves in severe stress possess 1.09 times increase in peroxidase and 1.8 times increase in catalase activity than Pusakomal.”
e1“Two varieties of cowpea”
Claim · model-written summary
Under severe stress, Kanakamony leaves had 1.8 times higher catalase activity than Pusakomal.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- Kanakamonye0
- Organ / stage
- leavese0
- Outcome
- catalase activitye0
- Direction
- increasee0
- Value
- 1.8 timese0
- Comparator
- Pusakomale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kanakamony leaves in severe stress possess 1.09 times increase in peroxidase and 1.8 times increase in catalase activity than Pusakomal.”
e1“Two varieties of cowpea”
Claim · model-written summary
Ascorbic acid concentration decreased as drought stress increased in both cowpea varieties.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- drought stresse0
- Outcome
- concentration of ascorbic acide0
- Direction
- depletede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of ascorbic acid in test plants depleted with increased drought stress in both varieties.”
e1“Two varieties of cowpea”
Claim · model-written summary
Under severe stress, leaves of the tolerant variety had 1.13 times higher ascorbic acid content than Pusakomal.
- Taxon
- cowpeaVigna unguiculatae1
- Organ / stage
- leavese0
- Outcome
- ascorbic acid contente0
- Direction
- highere0
- Value
- 1.13 timese0
- Comparator
- Pusakomale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaves of tolerant variety in severe stress showed 1.13 times higher ascorbic acid content than Pusakomal.”
e1“Two varieties of cowpea”
Claim · model-written summary
The authors judged Kanakamony to have the best antioxidant system for drought tolerance.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- Kanakamonye0
- Outcome
- best antioxidant system to tolerate drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Among the two varieties, Kanakamony possess the best antioxidant system to tolerate drought stress.”
e1“Two varieties of cowpea”
Claim · model-written summary
The authors suggested that Kanakamony antioxidant adaptations could limit cellular damage during water deficit.
- Taxon
- cowpeaVigna unguiculatae2
- Material
- Kanakamonye1
- Outcome
- cellular damagee0
- Qualifier
- active oxygen speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This could limit cellular damage caused by active oxygen species, during waterdeficit.”
e1“Among the two varieties, Kanakamony possess the best antioxidant system to tolerate drought stress.”
e2“Two varieties of cowpea”
Claim · model-written summary
Pusakomal was relatively poor in drought antioxidant adaptations.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- Pusakomale0
- Outcome
- relatively poor in these adaptationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The variety Pusakomal was relatively poor in these adaptations.”
e1“Two varieties of cowpea”
The same questions in other papers
drought · physiology: antioxidant enzymes · Vigna unguiculata (cowpea)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →drought · physiology: oxidative · Vigna unguiculata (cowpea)Results agree
7 papers in the same direction as this paper
- negative
- negative
- negative
4 papers more in this group
See all 8 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.