Abstract
The effect of phloem ringing on the uptake and transport of potassium by the roots of 4 week old sunflower plants has been investigated. Ringing caused a rapid decline in both K+ uptake and its transport (86Rb tracer) to the shoot. The rate of root elongation and the levels of sucrose in the root showed parallel decreases after ringing. Measurement on isolated roots indicated that the effect of ringing the stem on K+ uptake by the roots was confined to the apical 10 mm that included the extension zone. It is postulated that the decline in potassium uptake and transport, brought about by ringing, is due to the severance of the sucrose supply which stops root growth.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
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
Ringing rapidly reduced root K+ uptake.
- Taxon
- Helianthus annuus
Helianthus annuust0 - Treatment
- Ringinge0
- Outcome
- K+ uptakee0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ringing caused a rapid decline in both K+ uptake and its transport (86Rb tracer) to the shoot”
t0“Helianthus annuus”
Claim · model-written summary
Ringing rapidly reduced K+ transport to shoots.
- Taxon
- Helianthus annuusHelianthus annuust0
- Treatment
- Ringinge0
- Outcome
- transport (86Rb tracer) to the shoote0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ringing caused a rapid decline in both K+ uptake and its transport (86Rb tracer) to the shoot”
t0“Helianthus annuus”
Claim · model-written summary
Root elongation decreased after ringing.
- Taxon
- Helianthus annuusHelianthus annuust0
- Treatment
- ringinge0
- Outcome
- rate of root elongatione0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate of root elongation and the levels of sucrose in the root showed parallel decreases after ringing”
t0“Helianthus annuus”
Claim · model-written summary
Root sucrose levels decreased after ringing.
- Taxon
- Helianthus annuusHelianthus annuust0
- Treatment
- ringinge0
- Outcome
- levels of sucrose in the roote0
- Direction
- decreasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rate of root elongation and the levels of sucrose in the root showed parallel decreases after ringing”
t0“Helianthus annuus”
Claim · model-written summary
The ringing effect on root K+ uptake was confined to the apical 10 mm.
- Taxon
- Helianthus annuusHelianthus annuust0
- Organ / stage
- apical 10 mme0
- Treatment
- ringing the steme0
- Outcome
- K+ uptake by the rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of ringing the stem on K+ uptake by the roots was confined to the apical 10 mm that included the extension zone”
t0“Helianthus annuus”
Claim · model-written summary
The authors propose that loss of sucrose supply stops root growth and thereby reduces potassium uptake and transport.
- Taxon
- Helianthus annuusHelianthus annuust0
- Outcome
- decline in potassium uptake and transporte0
- Qualifier
- severance of the sucrose supply which stops root growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decline in potassium uptake and transport, brought about by ringing, is due to the severance of the sucrose supply which stops root growth”
t0“Helianthus annuus”
The same questions in other papers
pruning · molecular: metabolites · Helianthus annuus (common sunflower)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →pruning · growth · Helianthus annuus (common sunflower)Positive and negative results
2 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 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.