Abstract
Climate change has a widespread influence on agricultural productivity and relies upon the fact that responses vary between crops. Any changes in the nutritional quality of the host plant will have direct influences on associated insect pests and the damage that it causes. In this context, a study was conducted to measure the impact of elevated CO2 and temperature on the growth and development of cowpea (C3 plant) and its herbivore pod borer, Maruca vitrata (Fabricius) under open top chambers at the Center for Agro-climatic Studies, UAS, Raichur, Karnataka. Elevated CO2 had a positive impact on cowpea growth by encouraging crop boom along with vital changes in its phytochemistry. The increased supply of CO2 resulted in higher concentrations of ‘C’ and C-based metabolites and chlorophyll (39.81 µg/cm2) and nitrogen balance index (104.52). However, ‘N’ and N-based compounds were reduced. Larvae fed upon such nutrient-deficient food increased their development period (36.07 ±0.42days) and compensatory feeding inflicting more damage (7.72 webbings/plant). Although the larvae consumed more food, it decreased the body weight of the larvae and pupae, which in turn decreased the percent moth emergence, ultimately decreasing the fecundity (60.09 ± 0.20/female) and fitness of the pest in the long run.
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Claims 12
Claim · model-written summary
Elevated CO2 promoted cowpea growth.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- Elevated CO2e0
- Outcome
- cowpea growthe0
- Direction
- positive impacte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO2 had a positive impact on cowpea growth by encouraging crop boom”
Claim · model-written summary
Elevated CO2 increased carbon and carbon-based metabolites in cowpea.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- increased supply of CO2e0
- Outcome
- concentrations of ‘C’ and C-based metabolitese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased supply of CO2 resulted in higher concentrations of ‘C’ and C-based metabolites”
t0“cowpea pod borer”
Claim · model-written summary
Elevated CO2 raised cowpea chlorophyll to 39.81 µg/cm2.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- increased supply of CO2e0
- Outcome
- chlorophylle0
- Direction
- highere0
- Value
- 39.81 µg/cm2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased supply of CO2 resulted in higher concentrations of ‘C’ and C-based metabolites and chlorophyll (39.81 µg/cm2)”
t0“cowpea pod borer”
Claim · model-written summary
Elevated CO2 raised the nitrogen balance index to 104.52.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- elevated CO2t0
- Outcome
- nitrogen balance indexe0
- Value
- 104.52e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and nitrogen balance index (104.52). However, ‘N’ and N-based compounds were reduced”
t0“elevated CO2 and temperature) on growth and development of cowpea”
Claim · model-written summary
Nitrogen and nitrogen-based compounds declined under elevated CO2.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- elevated CO2t0
- Outcome
- ‘N’ and N-based compoundse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, ‘N’ and N-based compounds were reduced”
t0“elevated CO2 and temperature) on growth and development of cowpea”
Claim · model-written summary
Larvae feeding on nutrient-deficient cowpea had longer development, 36.07 ±0.42days.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- nutrient-deficient foode0
- Interactor
- Maruca vitrata
Maruca vitratat0pest - Outcome
- development periode0
- Direction
- increasede0
- Value
- 36.07 ±0.42dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Larvae fed upon such nutrient-deficient food increased their development period (36.07 ±0.42days)”
t0“cowpea pod borer, Maruca vitrata”
Claim · model-written summary
Larval compensatory feeding increased damage to 7.72 webbings per plant.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- compensatory feedinge0
- Interactor
- Maruca vitrataMaruca vitratat0pest
- Outcome
- damagee0
- Direction
- moree0
- Value
- 7.72 webbings/plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and compensatory feeding inflicting more damage (7.72 webbings/plant)”
t0“cowpea pod borer, Maruca vitrata”
Claim · model-written summary
Despite greater food consumption, larval body weight decreased.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- consumed more foode0
- Interactor
- Maruca vitrataMaruca vitratat0pest
- Outcome
- body weight of the larvaee0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although the larvae consumed more food, it decreased the body weight of the larvae and pupae”
t0“cowpea pod borer, Maruca vitrata”
Claim · model-written summary
Despite greater food consumption, pupal body weight decreased.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- consumed more foode0
- Interactor
- Maruca vitrataMaruca vitratat0pest
- Outcome
- body weight of the larvae and pupaee0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although the larvae consumed more food, it decreased the body weight of the larvae and pupae”
t0“cowpea pod borer, Maruca vitrata”
Claim · model-written summary
Moth emergence percentage decreased.
- Taxon
- cowpeaVigna unguiculatat0
- Interactor
- Maruca vitrataMaruca vitratat0pest
- Outcome
- percent moth emergencee0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which in turn decreased the percent moth emergence”
t0“cowpea pod borer, Maruca vitrata”
Claim · model-written summary
Pest fecundity decreased to 60.09 ± 0.20 per female.
- Taxon
- cowpeaVigna unguiculatat0
- Interactor
- Maruca vitrataMaruca vitratat0pest
- Outcome
- fecunditye0
- Direction
- decreasinge0
- Value
- 60.09 ± 0.20/femalee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ultimately decreasing the fecundity (60.09 ± 0.20/female) and fitness of the pest in the long run”
t0“cowpea pod borer, Maruca vitrata”
Claim · model-written summary
Pest fitness decreased in the long run.
- Taxon
- cowpeaVigna unguiculatat0
- Interactor
- Maruca vitrataMaruca vitratat0pest
- Outcome
- fitness of the peste0
- Direction
- decreasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ultimately decreasing the fecundity (60.09 ± 0.20/female) and fitness of the pest in the long run”
t0“cowpea pod borer, Maruca vitrata”
The same questions in other papers
co2 · growth · Vigna unguiculata (cowpea)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 papers →co2 · physiology: pigments · Vigna unguiculata (cowpea)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.