Abstract
Seven-day-old Mammoth Russian sunflower seedlings were grown in nutrient solutions with or without boron, for 2 to 5 days, after which they were x irradiated and again supplied with boron. Withholding boron for short intervals prior to x irradiation with doses that normally produce pronounced radiation symptoms, had a marked alleviating effect on the development of radiation injury. The absence of boron resulted in retardation of some phase of cellular activity and rendered the plants more radioresistant. This normally radiosensitive phase of cellular activity which may be rendered relatively radioresistant by withholding boron is, then, berondependent. An attempt was made to identify this growth phase by irradiating a series of germinating seedlings at different growth stages. lt appeared to be the phase of cellular maturation rather than cell division, suggesting that boron is required for some process or processes concerned with cellular maturation or differentiation. The apparent effect of boron on sugar translocation appears to be related to the effect of boron on cellular activity rather than to a direct enhancement of diffusion through membranes through formation of a sugar-borate complex. (auth)
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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Withholding boron before irradiation alleviated radiation injury.
- Taxon
- Sunflower
Helianthus annuust0 - Treatment
- Withholding borone0
- Outcome
- radiation injurye0
- Direction
- alleviatinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Withholding boron for short intervals prior to x irradiation with doses that normally produce pronounced radiation symptoms, had a marked alleviating effect on the development of radiation injury”
t0“Sunflower Plants”
Claim · model-written summary
Absence of boron retarded a phase of cellular activity.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- absence of borone0
- Outcome
- some phase of cellular activitye0
- Direction
- retardatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The absence of boron resulted in retardation of some phase of cellular activity”
t0“Sunflower Plants”
Claim · model-written summary
Absence of boron made the plants more radioresistant.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- absence of borone0
- Outcome
- radioresistante0
- Direction
- moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The absence of boron resulted in retardation of some phase of cellular activity and rendered the plants more radioresistant”
t0“Sunflower Plants”
Claim · model-written summary
The radiosensitive phase appeared to be cellular maturation rather than cell division.
- Taxon
- SunflowerHelianthus annuust0
- Outcome
- phase of cellular maturation rather than cell divisione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“lt appeared to be the phase of cellular maturation rather than cell division”
t0“Sunflower Plants”
Claim · model-written summary
Boron was suggested to support cellular maturation or differentiation.
- Taxon
- SunflowerHelianthus annuust0
- Compound
- borone0
- Outcome
- cellular maturation or differentiatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that boron is required for some process or processes concerned with cellular maturation or differentiation”
t0“Sunflower Plants”
Claim · model-written summary
The apparent boron effect on sugar translocation was related to its effect on cellular activity.
- Taxon
- SunflowerHelianthus annuust0
- Compound
- borone0
- Outcome
- sugar translocatione0
- Qualifier
- cellular activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The apparent effect of boron on sugar translocation appears to be related to the effect of boron on cellular activity”
t0“Sunflower Plants”
The same questions in other papers
boron atom · crop injury · Helianthus annuus (common sunflower)Results agree
1 paper in the same direction as this paper
This paper is about lacking the nutrient, so it counts the other way round here.
- 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.