Abstract
Excised rice seminal roots with scutella were cultured aseptically in vitro by means of "bi-media culture" method. The morphogenetic responses of roots to the changes of the concentration of sugar supplied as glucose solution through the basal parts of the roots were studied. The sugar concentration of the media was changed after the roots were pre-cultured for 7 days and then cultured for succeeding 7 days. When the concentration of glucose was changed from 0.5% to 7%, the elongation rate of primary roots and lateral roots increased immediately after the treatment. The increase in diameter of primary roots which owed to the expansion of individual cortical cells was also observed. On the other hand, when the concentration of glucose was changed from 7% to 0.5%, the elongation rate of primary roots and the thicker laterals did not decrease, but the elongation of the thinner laterals was restricted. The addition of 0.5% of mannose to 6.5% of glucose following the pre-culture with 7% of glucose strictly restricted the elongation of pimary roots and laterals. The results indicate the important role of sugar provision from shoot to root in determining the length, diameter and branching patterns of crown roots of rice plants.
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Claims 9
Claim · model-written summary
Increasing glucose from 0.5% to 7% immediately increased primary-root elongation.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- primary rootse0
- Treatment
- concentration of glucose was changed from 0.5% to 7%e0
- Outcome
- elongation rate of primary rootse0
- Direction
- increasede0
- Comparator
- 0.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the concentration of glucose was changed from 0.5% to 7%, the elongation rate of primary roots and lateral roots increased immediately after the treatment.”
t0“The Morphogenetic Responses of Excised Seminal Roots of Rice Plants to the Changing Conditions of Sugar Supply”
Claim · model-written summary
Increasing glucose from 0.5% to 7% immediately increased lateral-root elongation.
- Taxon
- riceOryza sativat0
- Organ / stage
- lateral rootse0
- Treatment
- concentration of glucose was changed from 0.5% to 7%e0
- Outcome
- elongation rate of primary roots and lateral rootse0
- Direction
- increasede0
- Comparator
- 0.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the concentration of glucose was changed from 0.5% to 7%, the elongation rate of primary roots and lateral roots increased immediately after the treatment.”
t0“The Morphogenetic Responses of Excised Seminal Roots of Rice Plants to the Changing Conditions of Sugar Supply”
Claim · model-written summary
Primary-root diameter increased through expansion of cortical cells.
- Taxon
- riceOryza sativat0
- Organ / stage
- primary rootse0
- Outcome
- increase in diameter of primary rootse0
- Direction
- increasee0
- Qualifier
- expansion of individual cortical cellse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in diameter of primary roots which owed to the expansion of individual cortical cells was also observed.”
t0“The Morphogenetic Responses of Excised Seminal Roots of Rice Plants to the Changing Conditions of Sugar Supply”
Claim · model-written summary
Reducing glucose from 7% to 0.5% did not decrease primary-root elongation.
- Taxon
- riceOryza sativat0
- Treatment
- concentration of glucose was changed from 7% to 0.5%e0
- Outcome
- elongation rate of primary rootse0
- Direction
- did not decreasee0
- Comparator
- 7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration of glucose was changed from 7% to 0.5%, the elongation rate of primary roots and the thicker laterals did not decrease”
t0“The Morphogenetic Responses of Excised Seminal Roots of Rice Plants to the Changing Conditions of Sugar Supply”
Claim · model-written summary
Reducing glucose from 7% to 0.5% did not decrease elongation of thicker laterals.
- Taxon
- riceOryza sativat0
- Organ / stage
- thicker lateralse0
- Treatment
- concentration of glucose was changed from 7% to 0.5%e0
- Outcome
- elongation rate of primary roots and the thicker lateralse0
- Direction
- did not decreasee0
- Comparator
- 7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration of glucose was changed from 7% to 0.5%, the elongation rate of primary roots and the thicker laterals did not decrease”
t0“The Morphogenetic Responses of Excised Seminal Roots of Rice Plants to the Changing Conditions of Sugar Supply”
Claim · model-written summary
Reducing glucose restricted elongation of thinner laterals.
- Taxon
- riceOryza sativat0
- Treatment
- concentration of glucose was changed from 7% to 0.5%e0
- Outcome
- elongation of the thinner lateralse0
- Direction
- restrictede0
- Comparator
- 7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the concentration of glucose was changed from 7% to 0.5%, the elongation rate of primary roots and the thicker laterals did not decrease, but the elongation of the thinner laterals was restricted.”
t0“The Morphogenetic Responses of Excised Seminal Roots of Rice Plants to the Changing Conditions of Sugar Supply”
Claim · model-written summary
Adding mannose to glucose restricted primary-root elongation.
- Taxon
- riceOryza sativat0
- Treatment
- addition of 0.5% of mannose to 6.5% of glucosee0
- Outcome
- elongation of pimary rootse0
- Direction
- restrictede0
- Comparator
- pre-culture with 7% of glucosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of 0.5% of mannose to 6.5% of glucose following the pre-culture with 7% of glucose strictly restricted the elongation of pimary roots and laterals.”
t0“The Morphogenetic Responses of Excised Seminal Roots of Rice Plants to the Changing Conditions of Sugar Supply”
Claim · model-written summary
Adding mannose to glucose restricted lateral-root elongation.
- Taxon
- riceOryza sativat0
- Organ / stage
- lateralse0
- Treatment
- addition of 0.5% of mannose to 6.5% of glucosee0
- Outcome
- elongation of pimary roots and lateralse0
- Direction
- restrictede0
- Comparator
- pre-culture with 7% of glucosee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of 0.5% of mannose to 6.5% of glucose following the pre-culture with 7% of glucose strictly restricted the elongation of pimary roots and laterals.”
t0“The Morphogenetic Responses of Excised Seminal Roots of Rice Plants to the Changing Conditions of Sugar Supply”
Claim · model-written summary
The authors infer that shoot-to-root sugar provision determines crown-root length, diameter and branching patterns.
- Taxon
- rice plantsOryza sativae0
- Outcome
- length, diameter and branching patterns of crown rootse0
- Qualifier
- sugar provision from shoot to roote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicate the important role of sugar provision from shoot to root in determining the length, diameter and branching patterns of crown roots of rice plants.”
The same questions in other papers
glucose · growth · Oryza sativa (rice)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
5 papers more in this group
See all 9 papers →mannose · growth · Oryza sativa (rice)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.