Abstract
The respiratory uptake or photosynthetic evolution of oxygen by mesophyll protoplasts of pea ( Pisum sativum L. cv. Arkel) were monitored during successive short. (3–5 min) cycles of darkness and illumination. The rate of respiration was nearly doubled after 3–4 short periods of illumination while there was a 15–20% enhancement in photosynthesis with cycles of illumination and darkness preceding illumination. Such interaction between photosynthesis and respiration was statistically significant when bicarbonate was present in the reaction medium. The inhibitors of photosynthesis [3(3,4–dichlorophenyl)‐l,l‐dimethylurea (DCMU), glyceraldehyde] decreased respiration after periods of illumination, whereas inhibitors of respiratory electron transport (Rotenone, antimycin A, NaN 3 ) suppressed photosynthesis, as well. We suggest that a rapid beneficial interaction exists between photosynthesis and respiration in protoplasts, even during short cycles of light and darkness.
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Claims 6
Claim · model-written summary
Respiration rate of pea mesophyll protoplasts nearly doubled after 3–4 short periods of illumination.
- Taxon
- pea
Lathyrus oleraceust0 - Treatment
- 3–4 short periods of illuminatione0
- Outcome
- rate of respiratione0
- Direction
- nearly doublede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea”
e0“The rate of respiration was nearly doubled after 3–4 short periods of illumination”
Claim · model-written summary
Photosynthesis of pea mesophyll protoplasts was enhanced by 15–20% with cycles of illumination and darkness preceding illumination.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- cycles of illumination and darkness preceding illuminatione0
- Outcome
- photosynthesise0
- Direction
- enhancemente0
- Value
- 15–20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea”
e0“there was a 15–20% enhancement in photosynthesis with cycles of illumination and darkness preceding illumination”
Claim · model-written summary
The interaction between photosynthesis and respiration in pea protoplasts was statistically significant when bicarbonate was present in the reaction medium.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- interaction between photosynthesis and respiratione0
- Qualifier
- when bicarbonate was present in the reaction mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea”
e0“Such interaction between photosynthesis and respiration was statistically significant when bicarbonate was present in the reaction medium”
Claim · model-written summary
Inhibitors of photosynthesis (DCMU, glyceraldehyde) decreased respiration of pea protoplasts after periods of illumination.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- inhibitors of photosynthesise0
- Outcome
- respiration after periods of illuminatione1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea”
e0“The inhibitors of photosynthesis”
e1“decreased respiration after periods of illumination”
Claim · model-written summary
Inhibitors of respiratory electron transport (rotenone, antimycin A, NaN3) suppressed photosynthesis of pea protoplasts.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- inhibitors of respiratory electron transporte0
- Outcome
- photosynthesise1
- Direction
- suppressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea”
e0“inhibitors of respiratory electron transport”
e1“suppressed photosynthesis, as well”
Claim · model-written summary
The authors suggest a rapid beneficial interaction between photosynthesis and respiration exists in protoplasts, even during short light-dark cycles.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- beneficial interaction exists between photosynthesis and respiratione0
- Qualifier
- even during short cycles of light and darknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pea”
e0“a rapid beneficial interaction exists between photosynthesis and respiration in protoplasts, even during short cycles of light and darkness”
The same questions in other papers
light · physiology: respiration · Lathyrus oleraceus (pea)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
light · physiology: photosynthesis · Lathyrus oleraceus (pea)Positive and negative results
9 papers in the same direction as this paper · 14 in the opposite direction
- negative
- negative
- no effect
20 papers more in this group
See all 24 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.