Abstract
S ummary In assays of acid phosphatase activity with p‐nitrophenyl phosphate as substrate, the low activity found in fluids removed from around roots in liquid medium was not affected by the presence of micro‐organisms. Most phosphatase activity of intact seedling roots was associated with the root surface and was not increased by micro‐organisms in the rhizoplane; in some experiments activity was significantly reduced by soil micro‐organisms. Inoculation of roots with pure cultures of bacteria and a fungus known to have phosphatase activity did not increase this activity of the roots. These results are contrasted with those of other workers. Possible application to the soil situation is discussed.
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Claims 6
Claim · model-written summary
Microorganisms did not affect the low acid phosphatase activity in fluids around wheat roots.
- Taxon
- WHEAT
Triticum aestivumt0 - Treatment
- presence of micro‐organismse0
- Interactor
- micro‐organismse0other
- Outcome
- activity found in fluids removed from around rootse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the low activity found in fluids removed from around roots in liquid medium was not affected by the presence of micro‐organisms”
t0“WHEAT ROOTS”
Claim · model-written summary
Most intact wheat seedling-root phosphatase activity was associated with the root surface.
- Taxon
- WHEATTriticum aestivumt0
- Organ / stage
- root surfacee0
- Outcome
- phosphatase activity of intact seedling rootse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most phosphatase activity of intact seedling roots was associated with the root surface”
t0“WHEAT ROOTS”
Claim · model-written summary
Rhizoplane microorganisms did not increase wheat-root phosphatase activity.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- micro‐organisms in the rhizoplanee0
- Interactor
- micro‐organismse0other
- Outcome
- phosphatase activitye1
- Direction
- not increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was not increased by micro‐organisms in the rhizoplane”
t0“WHEAT ROOTS”
e1“Most phosphatase activity of intact seedling roots was associated with the root surface”
Claim · model-written summary
Soil microorganisms significantly reduced wheat-root phosphatase activity in some experiments.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- soil micro‐organismse0
- Interactor
- soil micro‐organismse0other
- Outcome
- activitye0
- Direction
- reducede0
- Qualifier
- in some experimentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in some experiments activity was significantly reduced by soil micro‐organisms”
t0“WHEAT ROOTS”
Claim · model-written summary
Inoculation with phosphatase-active bacteria did not increase wheat-root phosphatase activity.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Inoculation of roots with pure cultures of bacteriae0
- Outcome
- phosphatase activitye1
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation of roots with pure cultures of bacteria and a fungus known to have phosphatase activity did not increase this activity of the roots”
t0“WHEAT ROOTS”
e1“phosphatase activity of intact seedling roots”
Claim · model-written summary
Inoculation with a phosphatase-active fungus did not increase wheat-root phosphatase activity.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Inoculation of roots with pure cultures of bacteria and a funguse0
- Interactor
- a funguse0other
- Outcome
- phosphatase activitye1
- Direction
- did not increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation of roots with pure cultures of bacteria and a fungus known to have phosphatase activity did not increase this activity of the roots”
t0“WHEAT ROOTS”
e1“phosphatase activity of intact seedling roots”
The same questions in other papers
inoculation · Bacteria · Triticum aestivum (wheat)Positive and negative results
3 papers in the same direction as this paper · 28 in the opposite direction
- positive
- positive
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See all 32 papers →inoculation · soil: biology · Triticum aestivum (wheat)Positive and negative results
6 papers in the same direction as this paper · 58 in the opposite direction
- positive
- positive
- positive
61 papers more in this group
See all 65 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.