Abstract
Changes in invertase activity and growth were examined in excised rice coleoptile sections which were treated with water, gibberellic acid (GA 3 ), sucrose, and GA 3 + sucrose. Invertase activity with all treatments rises in parallel during the first 6 h. Between 6 and 12 h, the GA 3 and GA 3 + sucrose treatment causes the invertase activity to increase at a faster rate than the respective water and sucrose controls. For all treatments, the peak invertase activity occurs at 12 h; it then declines rapidly between 12 and 24 h. After this, the enzyme activity becomes stable by 36 h for sucrose and GA 3 + sucrose treatments. In contrast, in water and GA 3 treatments, the enzyme activity continues to decrease up to 48 h, then attains a steady state level. With water, GA 3 , sucrose, and GA 3 + sucrose, there is a close correlation between the time of maximal invertase activity and the time of maximal growth rate (12 h), and the kinetics for promotion of both processes are essentially the same. This study indicates that both GA 3 and sucrose may be involved in regulating levels of invertase and that invertase activity is closely associated with growth in rice coleoptile sections.
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Claims 8
Claim · model-written summary
Invertase activity rose during the first six hours under all treatments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Invertase activity with all treatments rises in parallel during the first 6 h.”
t0“rice”
Claim · model-written summary
GA 3 accelerated invertase activity relative to water between six and twelve hours.
- Taxon
- rice
Oryza sativat0 - Treatment
- GA 3e0
- Gene
- invertasee0
- Outcome
- invertase activitye0
- Direction
- increasee0
- Qualifier
- Between 6 and 12 he0
- Comparator
- watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Between 6 and 12 h, the GA 3 and GA 3 + sucrose treatment causes the invertase activity to increase at a faster rate than the respective water and sucrose controls.”
t0“rice”
Claim · model-written summary
GA 3 plus sucrose accelerated invertase activity relative to sucrose between six and twelve hours.
- Taxon
- riceOryza sativat0
- Treatment
- GA 3 + sucrosee0
- Gene
- invertasee0
- Outcome
- invertase activitye0
- Direction
- increasee0
- Qualifier
- Between 6 and 12 he0
- Comparator
- sucrose controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Between 6 and 12 h, the GA 3 and GA 3 + sucrose treatment causes the invertase activity to increase at a faster rate than the respective water and sucrose controls.”
t0“rice”
Claim · model-written summary
Invertase activity peaked at twelve hours for all treatments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For all treatments, the peak invertase activity occurs at 12 h”
t0“rice”
Claim · model-written summary
Invertase activity declined rapidly from twelve to twenty-four hours.
- Taxon
- riceOryza sativat0
- Outcome
- invertase activitye0
- Direction
- declinese0
- Value
- 12 and 24 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the peak invertase activity occurs at 12 h; it then declines rapidly between 12 and 24 h.”
t0“rice”
Claim · model-written summary
Under sucrose and GA 3 plus sucrose, enzyme activity stabilized by thirty-six hours.
- Taxon
- riceOryza sativat0
- Treatment
- sucrose and GA 3 + sucrose treatmentse0
- Outcome
- enzyme activitye0
- Direction
- stablee0
- Value
- 36 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the enzyme activity becomes stable by 36 h for sucrose and GA 3 + sucrose treatments.”
t0“rice”
Claim · model-written summary
Under water and GA 3, enzyme activity kept decreasing until forty-eight hours.
- Taxon
- riceOryza sativat0
- Treatment
- water and GA 3 treatmentse0
- Outcome
- enzyme activitye0
- Direction
- decreasee0
- Value
- 48 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in water and GA 3 treatments, the enzyme activity continues to decrease up to 48 h, then attains a steady state level.”
t0“rice”
Claim · model-written summary
Maximal invertase activity and maximal growth rate coincided at twelve hours.
- Taxon
- riceOryza sativat0
- Gene
- invertasee0
- Outcome
- time of maximal growth ratee0
- Value
- 12 he0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there is a close correlation between the time of maximal invertase activity and the time of maximal growth rate (12 h)”
t0“rice”
The same questions in other papers
sucrose · soil: biology · Oryza sativa (rice)Results agree
2 papers in the same direction as this paper
- positive
- positive
Gibberellic acid · soil: biology · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.