Abstract
The transition from helical to reticulate wall patterns in the conducting elements of the xylem was located in etiolated soybean hypocotyls in conjunction with the distribution of elongation in the axis. The most acropetal reticulate elements are interpreted as the most acropetal metaxylem. Evidence is given that these elements experience strain as they mature. Predicted strain correlated significantly with maximum relative elemental rate of elongation (RELEL), which ranged from 0.08 to 0.12-hr-1. RELEL varied from 0.03 to 0.06hr-1 at the point of transition from helical to reticulate xylem element wall patterns. Estimates of strain to be experienced in the reticulate elements varied from 0.11 to 0.13 in untransplanted plants and from 0.04 to 0.11 in plants transplanted to the same, fully watered medium. Transplanting suppressed elongation in the region of maximum RELEL for ca. 12 hr and caused an upward migration of the region of depressed rates on the outside of the axis that accounts for hook-opening. Attention is called to the fact that this region of depressed growth corresponds with the onset of transverse enlargement of the hypocotyl axis.
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Claims 8
Claim · model-written summary
Reticulate xylem elements were strained during maturation.
- Taxon
- Soybean
Glycine maxt0 - Organ / stage
- Hypocotylst0
- Outcome
- experience straine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hypocotyls of Soybean Seedlings”
e0“Evidence is given that these elements experience strain as they mature”
Claim · model-written summary
Predicted strain correlated significantly with maximum relative elemental elongation rate.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- Hypocotylst0
- Outcome
- Predicted straine0
- Value
- 0.08 to 0.12-hr-1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hypocotyls of Soybean Seedlings”
e0“Predicted strain correlated significantly with maximum relative elemental rate of elongation (RELEL), which ranged from 0.08 to 0.12-hr-1”
Claim · model-written summary
RELEL was 0.03 to 0.06hr-1.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- RELELe0
- Value
- 0.03 to 0.06hr-1e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hypocotyls of Soybean Seedlings”
e0“RELEL varied from 0.03 to 0.06hr-1 at the point of transition from helical to reticulate xylem element wall patterns”
Claim · model-written summary
strain was 0.11 to 0.13.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- straine0
- Value
- 0.11 to 0.13e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hypocotyls of Soybean Seedlings”
e0“Estimates of strain to be experienced in the reticulate elements varied from 0.11 to 0.13 in untransplanted plants”
Claim · model-written summary
strain was 0.04 to 0.11.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- straine1
- Value
- 0.04 to 0.11e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hypocotyls of Soybean Seedlings”
e0“from 0.04 to 0.11 in plants transplanted to the same, fully watered medium”
e1“Estimates of strain to be experienced in the reticulate elements”
Claim · model-written summary
Transplanting suppressed elongation near maximum RELEL for about 12 hours.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Transplantinge0
- Outcome
- elongatione0
- Direction
- suppressede0
- Value
- ca. 12 hre0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hypocotyls of Soybean Seedlings”
e0“Transplanting suppressed elongation in the region of maximum RELEL for ca. 12 hr”
Claim · model-written summary
Transplanting shifted the region of depressed growth upward on the outer axis, accounting for hook opening.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- hook-openinge0
- Qualifier
- upward migration of the region of depressed rates on the outside of the axise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hypocotyls of Soybean Seedlings”
e0“caused an upward migration of the region of depressed rates on the outside of the axis that accounts for hook-opening”
Claim · model-written summary
The depressed-growth region coincided with onset of transverse hypocotyl enlargement.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- hypocotyl axise0
- Outcome
- onset of transverse enlargement of the hypocotyl axise0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hypocotyls of Soybean Seedlings”
e0“this region of depressed growth corresponds with the onset of transverse enlargement of the hypocotyl axis”
The same questions in other papers
transplanting · growth · Glycine max (soybean)Positive and negative results
3 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.