Abstract
Abstract Increasing atmospheric carbon dioxide concentration ( CO 2 ) is an important component of global climate change that will have a significant impact on the productivity of crop plants. In recent years, growth and yield of agricultural crop plants have been shown to increase with elevated CO 2 ( EC ) and have enticed considerable interest due to variation in the response of crop plants. In this study, comparative response of two mung bean cultivars ( HUM ‐2 and HUM ‐6) was evaluated against EC at different growth stages under near‐natural conditions for two consecutive years. The plants were grown in ambient as well as EC (700 ppm) in specially designed open‐top chambers. Under elevated CO 2 , marked down‐regulation of reactive oxygen species ( ROS ) levels, membrane disruption and activities of superoxide dismutase and catalase were noticed in both the cultivars, but the extent of reduction was more in HUM ‐6. As compared to ambient CO 2 , EC increased total chlorophyll, photosynthetic rate, growth and yield parameters. Cultivar‐specific response was noticed as HUM ‐6 showed higher increase in yield attributes than HUM ‐2. Under CO 2 treatment, soluble protein and reducing sugars decreased while total soluble sugars and starch showed an opposite trend. Principal component analysis showed that both the cultivars responded more or less similarly to EC in their respective groupings of physiological and growth parameters, but the magnitude of ROS and antioxidative enzymes was variable. The experimental findings depict that both the cultivars of mung bean showed contrasting response against EC and paved the way for selecting the suitable cultivar having higher productivity in a future high‐ CO 2 environment.
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Claims 9
Claim · model-written summary
Elevated CO2 reduced ROS, membrane disruption and antioxidant enzyme activities.
- Taxon
- Mung Bean
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Vigna radiatat0 - Treatment
- elevated CO 2e0
- Outcome
- reactive oxygen species ( ROS ) levels, membrane disruption and activities of superoxide dismutase and catalasee0
- Direction
- down‐regulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Under elevated CO 2 , marked down‐regulation of reactive oxygen species ( ROS ) levels, membrane disruption and activities of superoxide dismutase and catalase were noticed in both the cultivars, but the extent of reduction was more in HUM ‐6”
t0“Mung Bean”
Claim · model-written summary
The reduction was greater in HUM ‐6 than in HUM ‐2.
- Taxon
- mung beanVigna radiatae1
- Material
- HUM ‐6e0
- Outcome
- extent of reductione0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the extent of reduction was more in HUM ‐6”
e1“two mung bean cultivars ( HUM ‐2 and HUM ‐6)”
Claim · model-written summary
Elevated CO2 increased chlorophyll and photosynthetic rate.
- Taxon
- Mung BeanVigna radiatat0
- Treatment
- ECe0
- Outcome
- total chlorophyll, photosynthetic ratee0
- Direction
- increasede0
- Comparator
- ambient CO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As compared to ambient CO 2 , EC increased total chlorophyll, photosynthetic rate, growth and yield parameters”
t0“Mung Bean”
Claim · model-written summary
Elevated CO2 increased growth and yield parameters.
- Taxon
- Mung BeanVigna radiatat0
- Treatment
- ECe0
- Outcome
- growth and yield parameterse0
- Direction
- increasede0
- Comparator
- ambient CO 2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As compared to ambient CO 2 , EC increased total chlorophyll, photosynthetic rate, growth and yield parameters”
t0“Mung Bean”
Claim · model-written summary
HUM ‐6 had a greater yield-attribute increase than HUM ‐2.
- Taxon
- Mung BeanVigna radiatat0
- Material
- HUM ‐6e0
- Outcome
- yield attributese0
- Direction
- higher increasee0
- Comparator
- HUM ‐2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HUM ‐6 showed higher increase in yield attributes than HUM ‐2”
t0“Mung Bean”
Claim · model-written summary
CO2 treatment decreased soluble protein and reducing sugars.
- Taxon
- Mung BeanVigna radiatat0
- Treatment
- CO 2 treatmente0
- Outcome
- soluble protein and reducing sugarse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under CO 2 treatment, soluble protein and reducing sugars decreased”
t0“Mung Bean”
Claim · model-written summary
CO2 treatment increased total soluble sugars and starch.
- Taxon
- Mung BeanVigna radiatat0
- Treatment
- CO 2 treatmente0
- Outcome
- total soluble sugars and starche0
- Direction
- opposite trende0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under CO 2 treatment, soluble protein and reducing sugars decreased while total soluble sugars and starch showed an opposite trend”
t0“Mung Bean”
Claim · model-written summary
The cultivars responded similarly in physiological and growth parameter groupings.
- Taxon
- Mung BeanVigna radiatat0
- Outcome
- groupings of physiological and growth parameterse0
- Direction
- similarlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both the cultivars responded more or less similarly to EC in their respective groupings of physiological and growth parameters”
t0“Mung Bean”
Claim · model-written summary
ROS and antioxidant enzyme magnitudes varied between cultivars.
- Taxon
- Mung BeanVigna radiatat0
- Outcome
- magnitude of ROS and antioxidative enzymese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the magnitude of ROS and antioxidative enzymes was variable”
t0“Mung Bean”
The same questions in other papers
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See all 11 papers →co2 · physiology: photosynthesis · Vigna radiata (mung bean)Results agree
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See all 10 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.