Abstract
Abstract— Soybeans [ Glycine max (L) Merr. cv Essex] were grown in field plots during May‐October 1985 under ambient and an enhanced level of ultraviolet‐B (UV‐B) radiation (supplemental daily dose: 5.1 effective kJ m ‐2 ). They were either subjected to water stress or supplementally irrigated, resulting in a 2.0 MPa lower soil water potential in stressed plots. Increased levels of UV‐B radiation reduced leaf area, total plant dry weight and net photosynthesis under well‐watered conditions, but no significant UV‐B effects were detected in plants concurrently subjected to water stress. The insensitivity of growth and net photosynthesis to UV‐B radiation in water‐stressed plants may be related to anatomical and biochemical changes induced by water stress. These include an increase in the concentration of UV absorbing compounds in leaf tissues and leaf thickening.
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Claims 6
Claim · model-written summary
Water stress lowered soil water potential by 2.0 MPa.
- Taxon
- Soybeans
Glycine maxe1 - Outcome
- soil water potentiale0
- Direction
- lowere0
- Value
- 2.0 MPae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulting in a 2.0 MPa lower soil water potential in stressed plots”
e1“Soybeans [ Glycine max (L) Merr. cv Essex]”
Claim · model-written summary
Enhanced UV-B reduced soybean leaf area and total dry weight under well-watered conditions.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- Increased levels of UV‐B radiatione0
- Outcome
- leaf area, total plant dry weighte0
- Direction
- reducede0
- Qualifier
- under well‐watered conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased levels of UV‐B radiation reduced leaf area, total plant dry weight and net photosynthesis under well‐watered conditions”
t0“SOYBEAN”
Claim · model-written summary
Enhanced UV-B reduced soybean net photosynthesis under well-watered conditions.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- Increased levels of UV‐B radiatione0
- Outcome
- net photosynthesise0
- Direction
- reducede0
- Qualifier
- under well‐watered conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased levels of UV‐B radiation reduced leaf area, total plant dry weight and net photosynthesis under well‐watered conditions”
t0“SOYBEAN”
Claim · model-written summary
Concurrent water stress removed detectable significant UV-B effects on soybean growth and photosynthesis.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- UV‐Be0
- Outcome
- UV‐B effectse0
- Qualifier
- concurrently subjected to water stresse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant UV‐B effects were detected in plants concurrently subjected to water stress”
t0“SOYBEAN”
Claim · model-written summary
Water stress increased UV-absorbing compound concentration in soybean leaves.
- Taxon
- SOYBEANGlycine maxt0
- Organ / stage
- leaf tissuese0
- Treatment
- water stresse1
- Outcome
- concentration of UV absorbing compoundse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in the concentration of UV absorbing compounds in leaf tissues”
t0“SOYBEAN”
e1“changes induced by water stress”
Claim · model-written summary
Water stress thickened soybean leaves.
- Taxon
- SOYBEANGlycine maxt0
- Treatment
- water stresse1
- Outcome
- leaf thickeninge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf thickening”
t0“SOYBEAN”
e1“changes induced by water stress”
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