Abstract
Plant adaptation to its growing environment is reflected in physiological responses, such as stomatal conductance, photosynthetic rate, transpiration rates, and water use efficiency. We studied the influence of low light levels on leaf transpiration rate and stomal structure of young 'Jingyu' grape plants, Vitis vinefera L. cv. Jingyu, grown for 30 days under different light intensities (65% shading and 85% shading). The transpiration rate, stomatal conductance, and water use efficiency were measured using a portable photosynthesis system , and the stomata were observed using a scanning electron microscope. The results showed that the leaf water potential of young grape plants grown under a low light environment was higher but water use efficiency was lower as compared to the controls. Transpiration rate and stomatal conductance responded slowly to varied light intensities, whereas the young grape plants grown under natural light environment were more sensitive to changing light intensities. For the young grape plants grown under low light environment, the horizontal axes of their stomata were broaden and the difference between larger and smaller stomata was reduced. The stomata protruded out of the epidermal wall and even distorted the cuticle of the epidermal surface. Our results showed that young grape plants were able to adapt to a low light environment, and their leaf transpiration characteristics were correlated with stomatal structure.
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Claims 8
Claim · model-written summary
Leaf water potential of young grape plants grown under low light was higher than in the controls.
Verbatim
e0“the leaf water potential of young grape plants grown under a low light environment was higher but water use efficiency was lower as compared to the controls”
Claim · model-written summary
Water use efficiency of young grape plants grown under low light was lower than in the controls.
Verbatim
e0“the leaf water potential of young grape plants grown under a low light environment was higher but water use efficiency was lower as compared to the controls”
Claim · model-written summary
Transpiration rate and stomatal conductance of low-light grown plants responded slowly to varied light intensities, whereas plants grown under natural light were more sensitive to changing light intensities.
Verbatim
e1“Transpiration rate and stomatal conductance responded slowly to varied light intensities, whereas the young grape plants grown under natural light environment were more sensitive to changing light intensities”
Claim · model-written summary
Under low light, the horizontal axes of the stomata of young grape plants were broadened.
Verbatim
e2“For the young grape plants grown under low light environment, the horizontal axes of their stomata were broaden and the difference between larger and smaller stomata was reduced”
Claim · model-written summary
Under low light, the difference between larger and smaller stomata of young grape plants was reduced.
Verbatim
e2“For the young grape plants grown under low light environment, the horizontal axes of their stomata were broaden and the difference between larger and smaller stomata was reduced”
Claim · model-written summary
Under low light, the stomata protruded out of the epidermal wall and even distorted the cuticle of the epidermal surface.
- Taxon
- young grape plantse4
- Outcome
- stomata protruded out of the epidermal walle3
- Qualifier
- low light environmente4
Not reportedDirection
Verbatim
e3“The stomata protruded out of the epidermal wall and even distorted the cuticle of the epidermal surface”
e4“young grape plants grown under low light environment”
Claim · model-written summary
Young grape plants were able to adapt to a low light environment.
Verbatim
e5“Our results showed that young grape plants were able to adapt to a low light environment, and their leaf transpiration characteristics were correlated with stomatal structure”
Claim · model-written summary
Leaf transpiration characteristics of young grape plants were correlated with stomatal structure.
Not reportedDirection
Verbatim
e5“Our results showed that young grape plants were able to adapt to a low light environment, and their leaf transpiration characteristics were correlated with stomatal structure”