Abstract
A plasmalemma-enriched membrane preparation from etiolated soybean (Glycine max L., cv. Wayne) hypocotyls possesses an active ATP-dependent calcium pump which leads to calcium accumulation when assayed by the methods of Gross and Marmé (1978, Proc Natl Acad Sci USA 75: 1232-1236). Two-hour treatment of segments from the elongating zone of the hypocotyl with growth-promoting concentrations of indoleacetic acid gives up to 100 percent increase in the calcium transport activity. Conversely, similar pretreatment with zeatin or other cytokinins is inhibitory. In the meristematic and maturing zones of the hypocotyl, zeatin has the opposite effect of promoting calcium transport activity. One facet of cell-growth regulation may lie with hormonally mediated changes in efflux pumping of calcium.
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Claims 5
Claim · model-written summary
Etiolated soybean hypocotyl membranes possess an ATP-dependent calcium pump that accumulates calcium.
- Taxon
- soybean (Glycine max L., cv. Wayne)
Glycine maxe0 - Organ / stage
- hypocotylse0
- Gene
- ATP-dependent calcium pumpe0
- Outcome
- calcium accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A plasmalemma-enriched membrane preparation from etiolated soybean (Glycine max L., cv. Wayne) hypocotyls possesses an active ATP-dependent calcium pump which leads to calcium accumulation”
Claim · model-written summary
Indoleacetic acid pretreatment increased calcium transport up to 100 percent in the elongating zone.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- elongating zone of the hypocotyle0
- Treatment
- indoleacetic acide0
- Outcome
- calcium transport activitye0
- Direction
- increasee0
- Value
- 100 percente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Two-hour treatment of segments from the elongating zone of the hypocotyl with growth-promoting concentrations of indoleacetic acid gives up to 100 percent increase in the calcium transport activity”
t0“Soybean”
t1“Soybean”
Claim · model-written summary
Zeatin pretreatment inhibited calcium transport in the elongating zone.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- zeatine0
- Outcome
- calcium transport activitye1
- Direction
- inhibitorye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conversely, similar pretreatment with zeatin or other cytokinins is inhibitory”
t0“Soybean”
t1“Soybean”
e1“Two-hour treatment of segments from the elongating zone of the hypocotyl with growth-promoting concentrations of indoleacetic acid gives up to 100 percent increase in the calcium transport activity”
Claim · model-written summary
Other cytokinins inhibited calcium transport in the elongating zone.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- other cytokininse0
- Outcome
- calcium transport activitye1
- Direction
- inhibitorye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Conversely, similar pretreatment with zeatin or other cytokinins is inhibitory”
t0“Soybean”
t1“Soybean”
e1“Two-hour treatment of segments from the elongating zone of the hypocotyl with growth-promoting concentrations of indoleacetic acid gives up to 100 percent increase in the calcium transport activity”
Claim · model-written summary
Zeatin promoted calcium transport in meristematic and maturing hypocotyl zones.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- meristematic and maturing zones of the hypocotyle0
- Treatment
- zeatine0
- Outcome
- calcium transport activitye0
- Direction
- promotinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the meristematic and maturing zones of the hypocotyl, zeatin has the opposite effect of promoting calcium transport activity”
t0“Soybean”
t1“Soybean”
The same questions in other papers
indole-3-acetic acid · nutrient: content · Glycine max (soybean)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 papers →zeatin · nutrient: content · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- positive
class · nutrient: content · Glycine max (soybean)Positive and negative results
6 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 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.