Abstract
Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight. The fresh weight of the hypocotyls was unaffected. Stimulatory effect of sucrose was much greater in the presence of the cotyledons than in their absence. Cotyledons also influenced the differentiation of primary phloem fibers in the hypocotyls of seedlings, although when cotyledons were removed, induction of some phloem fiber differentiation was possible by sucrose treatment alone. In the presence of the cotyledons, sucrose in the concentrations of 0.025 and 0.05 M greatly enhanced primary phloem fiber differentiation and secondary cell wall thickening. Stimulation of dry weight of the hypocotyls by sucrose treatment in the presence of the cotyledons may be due to enhanced secondary cell wall thickening.
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Claims 7
Claim · model-written summary
Sucrose increased hypocotyl dry weight in derooted seedlings.
- Taxon
- sunflower seedlings
Helianthus annuuse0 - Organ / stage
- hypocotylse0
- Treatment
- Sucrose treatmente0
- Outcome
- dry weighte0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight.”
Claim · model-written summary
Sucrose left hypocotyl fresh weight unaffected.
- Taxon
- sunflower seedlingsHelianthus annuuse0t0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fresh weight of the hypocotyls was unaffected.”
t0“sunflower seedlings”
e1“Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight.”
Claim · model-written summary
Sucrose stimulation was greater with cotyledons present.
- Taxon
- sunflower seedlingsHelianthus annuuse0t0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stimulatory effect of sucrose was much greater in the presence of the cotyledons than in their absence.”
t0“sunflower seedlings”
e1“Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight.”
Claim · model-written summary
Cotyledon removal still allowed some phloem fiber differentiation with sucrose alone.
- Taxon
- sunflower seedlingsHelianthus annuuse0t0e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when cotyledons were removed, induction of some phloem fiber differentiation was possible by sucrose treatment alone.”
t0“sunflower seedlings”
e1“Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight.”
Claim · model-written summary
With cotyledons present, sucrose enhanced primary phloem fiber differentiation.
- Taxon
- sunflower seedlingsHelianthus annuuse0t0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the presence of the cotyledons, sucrose in the concentrations of 0.025 and 0.05 M greatly enhanced primary phloem fiber differentiation and secondary cell wall thickening.”
t0“sunflower seedlings”
e1“Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight.”
Claim · model-written summary
With cotyledons present, sucrose enhanced secondary wall thickening.
- Taxon
- sunflower seedlingsHelianthus annuuse0t0e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the presence of the cotyledons, sucrose in the concentrations of 0.025 and 0.05 M greatly enhanced primary phloem fiber differentiation and secondary cell wall thickening.”
t0“sunflower seedlings”
e1“Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight.”
Claim · model-written summary
Authors suggest sucrose-induced dry weight gain may reflect secondary wall thickening.
- Taxon
- sunflower seedlingsHelianthus annuuse0t0e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stimulation of dry weight of the hypocotyls by sucrose treatment in the presence of the cotyledons may be due to enhanced secondary cell wall thickening.”
t0“sunflower seedlings”
e1“Sucrose treatment of the hypocotyls of derooted 7-day-old sunflower seedlings stimulated growth of hypocotyls as measured by dry weight.”
The same questions in other papers
sucrose · growth · Helianthus annuus (common sunflower)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- negative
1 paper more in this group
See all 5 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.