Abstract
The response of chlorophyll fluorescence, photosynthetic CO_2 assimilation (PN), stomatal conductance (gs), electrolyte leakage, and transpiration (E) was observed in Jatropha curcas seedlings subjected to soil flooding. A strong reduction in growth, leaf-area expansion (64%), and stomatal conductance (45%) impaired photosynthetic CO_2 assimilation (66%), which eventually reduced biomass yield. The ratio between variable-to-initial chlorophyll fluorescence (Fv/Fo) and the maximum quantum yield efficiency of the photosystem II (Fv/Fm) was used to explore damage associated with the functioning of the photosynthetic apparatus. A strong, non-linear correlation between physiological parameters and soil flooding duration was found. Our study primarily revealed consequences of epigenetics, i.e. stagnant soil flooding, which affected growth, development, and performance of Jatropha curcas significantly. The activities of catalase (CAT), ascorbate peroxidase (APx), glutathione reductase (GR), and glutathione peroxidase (GPx) in leaves increased, implying an integrated pathway involving CAT, APx, GR, and GPx for protection against the detrimental effects of reactive oxygen species (ROS) during soil flooding.
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Claims 12
Claim · model-written summary
Flooding strongly reduced Jatropha growth.
- Taxon
- Jatropha curcas
_tree_at_Samedha.jpg?width=60)
Jatropha curcast0 - Outcome
- growthe0
- Direction
- reductione0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_tree_at_Samedha.jpg?width=500)
Verbatim
e0“A strong reduction in growth, leaf-area expansion (64%), and stomatal conductance (45%) impaired photosynthetic CO_2 assimilation (66%), which eventually reduced biomass yield.”
t0“Jatropha curcas”
Claim · model-written summary
Flooding reduced leaf area expansion by 64%.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- soil floodingt0
- Outcome
- leaf-area expansione0
- Direction
- reductione0
- Value
- 64%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A strong reduction in growth, leaf-area expansion (64%), and stomatal conductance (45%)”
t0“Jatropha curcas during soil flooding”
Claim · model-written summary
Flooding reduced stomatal conductance by 45%.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- soil floodingt0
- Outcome
- stomatal conductancee0
- Direction
- reductione0
- Value
- 45%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A strong reduction in growth, leaf-area expansion (64%), and stomatal conductance (45%)”
t0“Jatropha curcas during soil flooding”
Claim · model-written summary
Flooding impaired photosynthetic CO2 assimilation by 66%.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- soil floodingt0
- Outcome
- photosynthetic CO_2 assimilatione0
- Direction
- impairede0
- Value
- 66%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“impaired photosynthetic CO_2 assimilation (66%)”
t0“Jatropha curcas during soil flooding”
Claim · model-written summary
Flooding reduced biomass yield.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- soil floodingt0
- Outcome
- biomass yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which eventually reduced biomass yield.”
t0“Jatropha curcas during soil flooding”
Claim · model-written summary
Physiological parameters correlated strongly and nonlinearly with flooding duration.
- Taxon
- Jatropha curcasJatropha curcast0
- Treatment
- soil flooding duratione0
- Outcome
- physiological parameterse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A strong, non-linear correlation between physiological parameters and soil flooding duration was found.”
t0“Jatropha curcas during soil flooding”
Claim · model-written summary
Flooding significantly affected Jatropha growth, development and performance.
- Taxon
- Jatropha curcasJatropha curcase0
- Treatment
- stagnant soil floodinge0
- Outcome
- growth, development, and performancee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stagnant soil flooding, which affected growth, development, and performance of Jatropha curcas significantly.”
Claim · model-written summary
Leaf catalase activity increased during flooding.
- Taxon
- Jatropha curcasJatropha curcast0
- Organ / stage
- leavese0
- Treatment
- soil floodingt0
- Gene
- catalase (CAT)e0
- Outcome
- activities of catalase (CAT)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of catalase (CAT), ascorbate peroxidase (APx), glutathione reductase (GR), and glutathione peroxidase (GPx) in leaves increased”
t0“Jatropha curcas during soil flooding”
Claim · model-written summary
Leaf ascorbate peroxidase activity increased during flooding.
- Taxon
- Jatropha curcasJatropha curcast0
- Organ / stage
- leavese0
- Treatment
- soil floodingt0
- Gene
- ascorbate peroxidase (APx)e0
- Outcome
- ascorbate peroxidase (APx)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of catalase (CAT), ascorbate peroxidase (APx), glutathione reductase (GR), and glutathione peroxidase (GPx) in leaves increased”
t0“Jatropha curcas during soil flooding”
Claim · model-written summary
Leaf glutathione reductase activity increased during flooding.
- Taxon
- Jatropha curcasJatropha curcast0
- Organ / stage
- leavese0
- Treatment
- soil floodingt0
- Gene
- glutathione reductase (GR)e0
- Outcome
- glutathione reductase (GR)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of catalase (CAT), ascorbate peroxidase (APx), glutathione reductase (GR), and glutathione peroxidase (GPx) in leaves increased”
t0“Jatropha curcas during soil flooding”
Claim · model-written summary
Leaf glutathione peroxidase activity increased during flooding.
- Taxon
- Jatropha curcasJatropha curcast0
- Organ / stage
- leavese0
- Treatment
- soil floodingt0
- Gene
- glutathione peroxidase (GPx)e0
- Outcome
- glutathione peroxidase (GPx)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activities of catalase (CAT), ascorbate peroxidase (APx), glutathione reductase (GR), and glutathione peroxidase (GPx) in leaves increased”
t0“Jatropha curcas during soil flooding”
Claim · model-written summary
The authors inferred an integrated antioxidant pathway protecting against ROS during flooding.
- Taxon
- Jatropha curcasJatropha curcast0
- Outcome
- protection against the detrimental effects of reactive oxygen species (ROS)e0
- Qualifier
- integrated pathway involving CAT, APx, GR, and GPxe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“implying an integrated pathway involving CAT, APx, GR, and GPx for protection against the detrimental effects of reactive oxygen species (ROS) during soil flooding.”
t0“Jatropha curcas during soil flooding”
The same questions in other papers
flooding · growth · Jatropha curcasResults agree
1 paper in the same direction as this paper
- negative
flooding · physiology: gas exchange · Jatropha curcasResults agree
1 paper in the same direction as this paper
- negative
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.