Abstract
Stomatal conductance (g s), transpiration (E), relative water content (RWC), superoxide dismutase activity (SOD), malondialdehyde (MDA), leaf carbohydrate soluble (LCS), free amino acids (FAA) and total protein (TP) content were measured under mild and severe drought stress in young potted Jatropha curcas L. in the greenhouse. The plants were kept for 12 days under three different water regimes, control (well hydrated), 50% irrigation control (mild stress) and 25% (severe stress), after rehydration were measured on the second and fourth day. Both mild and severe stress decreased g s and E; however, only severe stress reduced LCS, FAA and TP content and increased SOD activity (70%) and MDA content (60%) compared with the control. Moreover, under these conditions the plants showed severe leaf senescence. These results show that only severe drought stress decrease foliar metabolism in potted plants. These results show that severe drought decreased metabolism and leaf RWC, in potted plants. However, 48 h under a moderate stress is enough to drive the stomatal control is the main barrier against water loss. Finally, in the fourth day after rehydration the plants under a moderate and severe drought even had a g s and E reduced in both evaluation periods.
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Claims 8
Claim · model-written summary
Mild and severe drought stress decreased stomatal conductance and transpiration in young Jatropha curcas plants.
- Taxon
- Jatropha curcas
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Jatropha curcase0 - Treatment
- mild and severe stresse1
- Outcome
- g s and Ee1
- Direction
- decreasede1
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_tree_at_Samedha.jpg?width=500)
Verbatim
e0“young potted Jatropha curcas L.”
e1“Both mild and severe stress decreased g s and E”
e3“control (well hydrated)”
Claim · model-written summary
Severe drought stress reduced LCS, FAA and total protein (TP) content in young Jatropha curcas plants compared with the control.
- Taxon
- Jatropha curcasJatropha curcase0
- Treatment
- severe stresse4
- Outcome
- LCS, FAA and TP contente4
- Direction
- reducede4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“young potted Jatropha curcas L.”
e4“only severe stress reduced LCS, FAA and TP content and increased SOD activity (70%) and MDA content (60%) compared with the control”
Claim · model-written summary
Severe drought stress increased superoxide dismutase (SOD) activity by 70% compared with the control in Jatropha curcas.
- Taxon
- Jatropha curcasJatropha curcase0
- Treatment
- severe stresse4
- Outcome
- SOD activitye4
- Direction
- increasede4
- Value
- 70%e4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“young potted Jatropha curcas L.”
e4“only severe stress reduced LCS, FAA and TP content and increased SOD activity (70%) and MDA content (60%) compared with the control”
Claim · model-written summary
Severe drought stress increased malondialdehyde (MDA) content by 60% compared with the control in Jatropha curcas.
- Taxon
- Jatropha curcasJatropha curcase0
- Treatment
- severe stresse4
- Outcome
- MDA contente4
- Direction
- increasede4
- Value
- 60%e4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“young potted Jatropha curcas L.”
e4“only severe stress reduced LCS, FAA and TP content and increased SOD activity (70%) and MDA content (60%) compared with the control”
Claim · model-written summary
Severe drought stress caused severe leaf senescence in potted Jatropha curcas plants.
- Taxon
- Jatropha curcasJatropha curcase0
- Outcome
- leaf senescencee5
- Qualifier
- under these conditionse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“young potted Jatropha curcas L.”
e5“under these conditions the plants showed severe leaf senescence”
Claim · model-written summary
Severe drought decreased leaf relative water content (RWC) in potted Jatropha curcas plants.
- Taxon
- Jatropha curcasJatropha curcase0
- Treatment
- severe droughte6
- Outcome
- leaf RWCe6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“young potted Jatropha curcas L.”
e6“severe drought decreased metabolism and leaf RWC”
Claim · model-written summary
Forty-eight hours of moderate stress is enough to drive stomatal control, which is the main barrier against water loss in Jatropha curcas.
- Taxon
- Jatropha curcasJatropha curcase0
- Treatment
- 48 h under a moderate stresse7
- Outcome
- stomatal controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“young potted Jatropha curcas L.”
e7“However, 48 h under a moderate stress is enough to drive the stomatal control is the main barrier against water loss”
Claim · model-written summary
Moderate and severe drought still reduced stomatal conductance and transpiration on the fourth day after rehydration in Jatropha curcas.
- Taxon
- Jatropha curcasJatropha curcase0
- Treatment
- moderate and severe droughte2
- Outcome
- g s and Ee2
- Direction
- reducede2
- Qualifier
- fourth day after rehydratione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“young potted Jatropha curcas L.”
e2“in the fourth day after rehydration the plants under a moderate and severe drought even had a g s and E reduced in both evaluation periods”
The same questions in other papers
drought · physiology: gas exchange · Jatropha curcasPositive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
drought · physiology: water · Jatropha curcasPositive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- positive
- positive
3 papers more in this group
See all 7 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.