Abstract
The effect of phosphorus deficiency on acid phosphatase activity in the apical, middle and basal parts of the root of maize plants was followed. The supernatant obtained by centrifuging the homogenate of plant tissue at 1500 ×g was further centrifuged at 18 000 ×g, the sediment being marked as fraction II and the supernatant as fraction III. The results obtained document the fact that acid phosphatase activity of the two fractions of all analyzed root segments was higher in plants cultured in nutrient medium without phosphate than in those containing phosphorus in nutrient medium. In most cases this difference was significant to highly significant. The results of experiments proved unambiguously a higher enzymatic activity in all root segments in fraction III than in fraction II. In fraction III the highest acid phosphatase activity was found in the apical part, in fraction II in the basal part of the root.
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Claims 4
Claim · model-written summary
Phosphate-free culture increased acid phosphatase activity in both fractions of all root segments.
- Organ / stage
- root segmentse0
- Treatment
- nutrient medium without phosphatee0
- Outcome
- acid phosphatase activitye0
- Direction
- highere0
- Comparator
- those containing phosphorus in nutrient mediume0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize root”
e0“acid phosphatase activity of the two fractions of all analyzed root segments was higher in plants cultured in nutrient medium without phosphate than in those containing phosphorus in nutrient medium”
e1“In most cases this difference was significant to highly significant”
Claim · model-written summary
Acid phosphatase activity was higher in fraction III than fraction II in all root segments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize root”
e0“higher enzymatic activity in all root segments in fraction III than in fraction II”
Claim · model-written summary
In fraction III, acid phosphatase activity was highest in the apical root.
- Organ / stage
- apical parte0
- Outcome
- acid phosphatase activitye0
- Direction
- higheste0
- Qualifier
- fraction IIIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize root”
e0“In fraction III the highest acid phosphatase activity was found in the apical part”
Claim · model-written summary
In fraction II, acid phosphatase activity was highest in the basal root.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize root”
e0“in fraction II in the basal part of the root”
The same questions in other papers
phosphorus · soil: biology · Zea mays (maize)Positive and negative results
5 papers in the same direction as this paper · 9 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- positive
- positive
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See all 15 papers →in vitro · soil: biology · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
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.