Abstract
Abstract The leaf venation architecture is an ideal, highly structured and efficient irrigation system in plant leaves. Leaf vein density (LVD) and vein thickness are the two major properties of this system. Leaf laminae carry out photosynthesis to harvest the maximum biological yield. It is still unknown whether the LVD and/or leaf vein thickness determines the plant hydraulic conductance ( K plant ) and leaf photosynthetic rate ( A ). To investigate this topic, the current study was conducted with two varieties under three PEG-induced water deficit stress (PEG-IWDS) levels. The results showed that PEG-IWDS significantly decreased A , stomatal conductance (g s ), and K plant in both cultivars, though the IR-64 strain showed more severe decreases than the Hanyou-3 strain. PEG-IWDS significantly decreased the major vein thickness, while it had no significant effect on LVD. A , g s and K plant were positively correlated with each other, and they were negatively correlated with LVD. A , g s and K plant were positively correlated with the inter-vein distance and major vein thickness. Therefore, the decreased photosynthesis and hydraulic conductance in rice plants under water deficit conditions are related to the decrease in the major vein thickness.
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Claims 8
Claim · model-written summary
PEG water deficit significantly decreased rice photosynthetic rate, stomatal conductance and plant hydraulic conductance.
- Taxon
- rice
Oryza sativat0 - Treatment
- PEG-IWDSe0
- Outcome
- A , stomatal conductance (g s ), and K plante0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PEG-IWDS significantly decreased A , stomatal conductance (g s ), and K plant in both cultivars”
t0“rice”
Claim · model-written summary
IR-64 had more severe declines in those measures than Hanyou-3.
- Taxon
- riceOryza sativat0
- Material
- IR-64e0
- Treatment
- water stresst0
- Outcome
- more severe decreasese0
- Direction
- more severe decreasese0
- Comparator
- Hanyou-3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the IR-64 strain showed more severe decreases than the Hanyou-3 strain”
t0“Influence of leaf vein density and thickness on hydraulic conductance and photosynthesis in rice (Oryza sativa L.) during water stress”
Claim · model-written summary
PEG water deficit significantly decreased major vein thickness.
- Taxon
- riceOryza sativat0
- Treatment
- PEG-IWDSe0
- Outcome
- major vein thicknesse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PEG-IWDS significantly decreased the major vein thickness”
t0“rice”
Claim · model-written summary
PEG water deficit had no significant effect on leaf vein density.
- Taxon
- riceOryza sativat0
- Treatment
- water stresst0
- Outcome
- LVDe0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it had no significant effect on LVD”
t0“Influence of leaf vein density and thickness on hydraulic conductance and photosynthesis in rice (Oryza sativa L.) during water stress”
Claim · model-written summary
Photosynthetic rate, stomatal conductance and hydraulic conductance were positively correlated with one another.
- Taxon
- riceOryza sativat0
- Organ / stage
- leaft0
- Outcome
- A , g s and K plante0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A , g s and K plant were positively correlated with each other”
t0“Influence of leaf vein density and thickness on hydraulic conductance and photosynthesis in rice (Oryza sativa L.) during water stress”
Claim · model-written summary
Those three physiological measures were negatively correlated with leaf vein density.
- Taxon
- riceOryza sativat0
- Organ / stage
- leaft0
- Outcome
- A , g s and K plante0
- Direction
- negatively correlatede0
- Qualifier
- LVDe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A , g s and K plant were positively correlated with each other, and they were negatively correlated with LVD”
t0“Influence of leaf vein density and thickness on hydraulic conductance and photosynthesis in rice (Oryza sativa L.) during water stress”
Claim · model-written summary
Those three physiological measures were positively correlated with inter-vein distance and major vein thickness.
- Taxon
- riceOryza sativat0
- Organ / stage
- inter-vein distance and major vein thicknesse0
- Outcome
- A , g s and K plante0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A , g s and K plant were positively correlated with the inter-vein distance and major vein thickness”
t0“rice (Oryza sativa L.) during water stress”
Claim · model-written summary
Authors relate decreased rice photosynthesis and hydraulic conductance under water deficit to reduced major vein thickness.
- Taxon
- riceOryza sativae0
- Organ / stage
- major vein thicknesse0
- Outcome
- photosynthesis and hydraulic conductancee0
- Qualifier
- under water deficit conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decreased photosynthesis and hydraulic conductance in rice plants under water deficit conditions are related to the decrease in the major vein thickness”
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