Abstract
Abstract Effects of UV-B radiation (280-310 nm) and Zn deficiency on photosynthesis and carbonic anhydrase (CA) activity in peach seedlings ( Prunus persica (L.) Batsch) were studied. Low Zn markedly reduced CA activity; however, the reduction was not proportional to the reduction in leaf Zn content. Zn-deficient leaves irradiated with UV-B had lower CA activity, chlorophyll content, spectral reflectance and rates of photosynthesis. The reduction was more pronounced when leaves were distinctly chlorotic. Higher CA activity was not necessary for maintaining high rates of photosynthesis. Target areas in the leaf for UV-B absorption are discussed.
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Claims 6
Claim · model-written summary
Low zinc markedly reduced carbonic anhydrase activity.
- Taxon
- Peaches
Prunus persicat0 - Treatment
- Low Zne0
- Outcome
- CA activitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low Zn markedly reduced CA activity”
t0“Peaches”
Claim · model-written summary
Reduction in carbonic anhydrase activity was not proportional to the reduction in leaf zinc content.
- Taxon
- PeachesPrunus persicat0
- Compound
- Zne0
- Outcome
- reductione0
- Direction
- not proportionale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduction was not proportional to the reduction in leaf Zn content”
t0“Peaches”
Claim · model-written summary
Zinc deficient leaves irradiated with UV-B had lower carbonic anhydrase activity, chlorophyll content, and spectral reflectance.
- Taxon
- PeachesPrunus persicat0
- Treatment
- UV-Be0
- Outcome
- CA activity, chlorophyll content, spectral reflectancee0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn-deficient leaves irradiated with UV-B had lower CA activity, chlorophyll content, spectral reflectance and rates of photosynthesis.”
t0“Peaches”
Claim · model-written summary
Zinc deficient leaves irradiated with UV-B had lower rates of photosynthesis.
- Taxon
- PeachesPrunus persicat0
- Treatment
- UV-Be0
- Outcome
- rates of photosynthesise0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn-deficient leaves irradiated with UV-B had lower CA activity, chlorophyll content, spectral reflectance and rates of photosynthesis.”
t0“Peaches”
Claim · model-written summary
Reductions were more pronounced in distinctly chlorotic leaves.
- Taxon
- PeachesPrunus persicat0
- Outcome
- reductione0
- Direction
- more pronouncede0
- Qualifier
- leaves were distinctly chlorotice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduction was more pronounced when leaves were distinctly chlorotic.”
t0“Peaches”
Claim · model-written summary
Higher carbonic anhydrase activity was not necessary to maintain high photosynthesis rates.
- Taxon
- PeachesPrunus persicat0
- Gene
- CAe0
- Outcome
- high rates of photosynthesise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher CA activity was not necessary for maintaining high rates of photosynthesis.”
t0“Peaches”
The same questions in other papers
uv · physiology: pigments · Prunus persica (peach)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
uv · physiology: photosynthesis · Prunus persica (peach)Results 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.