Abstract
Growth and yield increases, obtained in nodulated soybeans growing in unamended sterile soil by inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseae, were accompanied by improved P uptake, lower root to shoot ratios, better nodulation with higher nitrogenase activity, and modifications in the pattern of the latter during plant growth. Stimulation of nitrogenase activity occurred early in plant development and preceded plant growth responses by about 2 weeks. Phosphate fertilization increased yield, percent P but not percent N of both mycorrhizal and nonmycorrhizal soybeans, and also modified the pattern and amount of nitrogenase activity during plant growth. Additions of 0.25 g KH 2 PO 4 /kg to the soil eliminated the mycorrhizal effect on plant growth, but nodule formation and nitrogenase activity were still significantly stimulated by the mycorrhizal infection. Mycorrhizal effects on nodulation were eliminated with 0.5 g KH 2 PO 4 and on nitrogenase activity with the addition of 1.0 g KH 2 PO 4 . These higher levels of phosphate fertilization considerably diminished infection and, in particular, fungal spread within the roots.
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Claims 14
Claim · model-written summary
Inoculation with Glomus mosseae increased soybean growth and yield in unamended sterile soil.
- Taxon
- soybeans
Glycine maxt0 - Treatment
- inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseaee0
- Interactor
- Glomus mosseae
Funneliformis mosseaee0symbiont - Outcome
- Growth and yielde0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e0“Growth and yield increases, obtained in nodulated soybeans growing in unamended sterile soil by inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseae”
Claim · model-written summary
Mycorrhizal inoculation improved soybean P uptake.
- Taxon
- soybeansGlycine maxt0
- Treatment
- inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseaee0
- Interactor
- Glomus mosseaeFunneliformis mosseaee0symbiont
- Outcome
- P uptakee1
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e0“Growth and yield increases, obtained in nodulated soybeans growing in unamended sterile soil by inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseae”
e1“were accompanied by improved P uptake, lower root to shoot ratios, better nodulation with higher nitrogenase activity”
Claim · model-written summary
Mycorrhizal inoculation lowered the root to shoot ratio of soybean.
- Taxon
- soybeansGlycine maxt0
- Treatment
- inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseaee0
- Interactor
- Glomus mosseaeFunneliformis mosseaee0symbiont
- Outcome
- root to shoot ratiose1
- Direction
- lowere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e0“Growth and yield increases, obtained in nodulated soybeans growing in unamended sterile soil by inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseae”
e1“were accompanied by improved P uptake, lower root to shoot ratios, better nodulation with higher nitrogenase activity”
Claim · model-written summary
Mycorrhizal inoculation improved nodulation of soybean.
- Taxon
- soybeansGlycine maxt0
- Treatment
- inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseaee0
- Interactor
- Glomus mosseaeFunneliformis mosseaee0symbiont
- Outcome
- nodulatione1
- Direction
- bettere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e0“Growth and yield increases, obtained in nodulated soybeans growing in unamended sterile soil by inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseae”
e1“were accompanied by improved P uptake, lower root to shoot ratios, better nodulation with higher nitrogenase activity”
Claim · model-written summary
Mycorrhizal inoculation increased nitrogenase activity of soybean.
- Taxon
- soybeansGlycine maxt0
- Treatment
- inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseaee0
- Interactor
- Glomus mosseaeFunneliformis mosseaee0symbiont
- Outcome
- nitrogenase activitye1
- Direction
- highere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e0“Growth and yield increases, obtained in nodulated soybeans growing in unamended sterile soil by inoculation with the vesicular–arbuscular (VA) mycorrhizal fungus Glomus mosseae”
e1“were accompanied by improved P uptake, lower root to shoot ratios, better nodulation with higher nitrogenase activity”
Claim · model-written summary
Stimulation of nitrogenase activity by mycorrhiza occurred early in development, about 2 weeks before growth responses.
- Taxon
- soybeansGlycine maxt0
- Outcome
- Stimulation of nitrogenase activitye2
- Value
- about 2 weekse2
- Qualifier
- preceded plant growth responsese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e2“Stimulation of nitrogenase activity occurred early in plant development and preceded plant growth responses by about 2 weeks”
Claim · model-written summary
Phosphate fertilization increased soybean yield.
- Taxon
- soybeansGlycine maxt0
- Treatment
- Phosphate fertilizatione3
- Outcome
- yielde3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e3“Phosphate fertilization increased yield, percent P but not percent N of both mycorrhizal and nonmycorrhizal soybeans”
Claim · model-written summary
Phosphate fertilization increased percent P in soybean.
- Taxon
- soybeansGlycine maxt0
- Treatment
- Phosphate fertilizatione3
- Outcome
- percent Pe3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e3“Phosphate fertilization increased yield, percent P but not percent N of both mycorrhizal and nonmycorrhizal soybeans”
Claim · model-written summary
Phosphate fertilization did not increase percent N in soybean.
- Taxon
- soybeansGlycine maxt0
- Treatment
- Phosphate fertilizatione3
- Outcome
- percent Ne3
- Qualifier
- but not percent Ne3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e3“Phosphate fertilization increased yield, percent P but not percent N of both mycorrhizal and nonmycorrhizal soybeans”
Claim · model-written summary
Phosphate fertilization modified the pattern and amount of nitrogenase activity during plant growth.
- Taxon
- soybeansGlycine maxt0
- Treatment
- Phosphate fertilizatione3
- Outcome
- pattern and amount of nitrogenase activitye4
- Direction
- modifiede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e3“Phosphate fertilization increased yield, percent P but not percent N of both mycorrhizal and nonmycorrhizal soybeans”
e4“and also modified the pattern and amount of nitrogenase activity during plant growth”
Claim · model-written summary
Adding 0.25 g KH2PO4/kg soil eliminated the mycorrhizal effect on plant growth.
- Taxon
- soybeansGlycine maxt0
- Treatment
- Additions of 0.25 g KH 2 PO 4 /kg to the soile5
- Outcome
- the mycorrhizal effect on plant growthe5
- Direction
- eliminatede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e5“Additions of 0.25 g KH 2 PO 4 /kg to the soil eliminated the mycorrhizal effect on plant growth”
Claim · model-written summary
Phosphate at 0.5 g KH2PO4/kg soil eliminated mycorrhizal effects on nodulation.
- Taxon
- soybeansGlycine maxt0
- Treatment
- 0.5 g KH 2 PO 4e7
- Outcome
- Mycorrhizal effects on nodulatione7
- Direction
- eliminatede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e7“Mycorrhizal effects on nodulation were eliminated with 0.5 g KH 2 PO 4”
Claim · model-written summary
Phosphate at 1.0 g KH2PO4/kg soil eliminated mycorrhizal effects on nitrogenase activity.
- Taxon
- soybeansGlycine maxt0
- Treatment
- 1.0 g KH 2 PO 4e2
- Outcome
- nitrogenase activitye2
- Direction
- eliminatede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e7“Mycorrhizal effects on nodulation were eliminated with 0.5 g KH 2 PO 4”
e2“and on nitrogenase activity with the addition of 1.0 g KH 2 PO 4”
Claim · model-written summary
Higher phosphate levels considerably diminished mycorrhizal infection and fungal spread within the roots.
- Taxon
- soybeansGlycine maxt0
- Treatment
- higher levels of phosphate fertilizatione1
- Outcome
- infectione1
- Direction
- diminishede1
- Qualifier
- fungal spread within the rootse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rhizobium in soybeans”
e1“These higher levels of phosphate fertilization considerably diminished infection and, in particular, fungal spread within the roots”
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See all 79 papers →8 of 14 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.