Abstract
To establish whether radiation-induced damage in plants causes primarily a weakening of the oxidation processes or interference with the mechanism of storing energy in a form accessible for biochemical processes, the effect of radiation on the metabolism was examined. Previous tests indicated that irradiation of tubers results in an interference between the respiration and phosphorylase actions, as is the case with animals, microorganisms and certain plants. The problem was studied by exposing garlic bulbs to total gamma -ray doses of 500 and 10,000 r. It was found that the type of tissue had a great effect on the rate of oxidation of organic acids. The phosphorylase activity is generally reduced by radiation; at 500 r phosphorus is not absorbed but is precipitated in the medium. Complete stoppage of the phosphorylase action by 500 r is due to the fact that garlic does not germinate; this action is depressed to a greater extent by radiation than oxidative processes. It is concluded that one of the chief effects of radiation is interference between oxidation and phosphorylase processes in the tissue because the energy obtained by respiration cannot be utilized completely by the plant cells. (TTT)
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Claims 8
Claim · model-written summary
Tissue type strongly affected the rate of organic acid oxidation in garlic.
- Taxon
- garlic
Allium sativume1 - Organ / stage
- type of tissuee0
- Outcome
- rate of oxidation of organic acidse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“PLANTS”
e0“the type of tissue had a great effect on the rate of oxidation of organic acids”
e1“garlic bulbs”
Claim · model-written summary
Radiation generally reduced phosphorylase activity in garlic.
- Taxon
- garlicAllium sativume1
- Treatment
- radiatione0
- Outcome
- phosphorylase activitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The phosphorylase activity is generally reduced by radiation”
e1“garlic bulbs”
Claim · model-written summary
At 500 r, phosphorus was not absorbed in the garlic assay.
- Taxon
- garlicAllium sativume1
- Treatment
- 500 re0
- Outcome
- phosphorus is not absorbede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 500 r phosphorus is not absorbed”
e1“garlic bulbs”
Claim · model-written summary
At 500 r, phosphorus precipitated in the medium.
- Taxon
- garlicAllium sativume1
- Treatment
- 500 re0
- Outcome
- phosphorus is not absorbed but is precipitated in the mediume0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 500 r phosphorus is not absorbed but is precipitated in the medium”
e1“garlic bulbs”
Claim · model-written summary
At 500 r, phosphorylase action stopped completely.
- Taxon
- garlicAllium sativume1
- Treatment
- 500 re0
- Outcome
- phosphorylase actione0
- Direction
- Complete stoppagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Complete stoppage of the phosphorylase action by 500 r”
e1“fact that garlic does not germinate”
Claim · model-written summary
Garlic did not germinate after the radiation exposure described.
- Taxon
- garlicAllium sativume0
- Treatment
- 500 re1
- Outcome
- does not germinatee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“garlic does not germinate”
e1“by 500 r”
Claim · model-written summary
Radiation depressed phosphorylase action more than oxidative processes.
- Taxon
- garlicAllium sativume1
- Treatment
- radiatione0
- Outcome
- this actione0
- Direction
- depressed to a greater extente0
- Comparator
- oxidative processese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this action is depressed to a greater extent by radiation than oxidative processes”
e1“fact that garlic does not germinate”
Claim · model-written summary
The authors conclude that radiation interferes with the coupling of oxidation and phosphorylase processes because respiratory energy cannot be fully used by plant cells.
- Taxon
- garlicAllium sativume1
- Treatment
- radiatione0
- Outcome
- interference between oxidation and phosphorylase processese0
- Qualifier
- energy obtained by respiration cannot be utilized completely by the plant cellse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one of the chief effects of radiation is interference between oxidation and phosphorylase processes in the tissue because the energy obtained by respiration cannot be utilized completely by the plant cells”
e1“fact that garlic does not germinate”
The same questions in other papers
radiation · physiology: enzyme activity · Allium sativum (garlic)Results agree
2 papers in the same direction as this paper
- no effect
- 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.