Abstract
Abstract Vesicular-arbuscular mycorrhizal (VAM) fungi colonize plant roots and the surrounding bulk soil. They transport mineral nutrients from the soil to the plant and carbon compounds from the plant to the soil, and have pervasive effects on plant form and function and on the composition of the soil microbiota. This experiment evaluated VAM effects on plants and soil to determine if VAM fungi mediate a relationship between changes in seed yield and soil aggregation. In a pot experiment with peas, an isolate of the VAM fungus Glomus mosseae (Nicol & Gerd.) Gerd. and Trappe did not significantly affect seed yield (8%), but improved soil aggregation by 400% in one soil, a gray silt-loam high in organic matter (OM) and phosphorus. In another soil, a yellow clay-loam low in OM and phosphorus, seed yield was enhanced significantly (57%), but there was only a small change (50%) in aggregation. The results suggest that carbon allocation between the plant (measured as seed yield) and the soil (measured as the formation of water-stable aggregates) is influenced by this VAM fungus. The soil appeared to gain carbon at the expense of carbon lost by the plant Mycorrhizal fungi thus seem to affect two biologically controlled aspects of sustainable agriculture: plant production and soil quality.
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Claims 5
Claim · model-written summary
Glomus mosseae had no significant effect on pea seed yield in high-organic-matter silt loam.
- Taxon
- peas
Lathyrus oleraceuse0 - Treatment
- an isolate of the VAM fungus Glomus mosseaee0
- Interactor
- Glomus mosseae
Funneliformis mosseaee0symbiont - Outcome
- seed yielde0
- Direction
- did not significantly affecte0
- Value
- 8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a pot experiment with peas, an isolate of the VAM fungus Glomus mosseae (Nicol & Gerd.) Gerd. and Trappe did not significantly affect seed yield (8%)”
Claim · model-written summary
The mycorrhizal isolate increased aggregation by 400% in gray silt loam.
- Taxon
- peasLathyrus oleraceuse1
- Outcome
- soil aggregatione0
- Direction
- improvede0
- Value
- 400%e0
- Setting
- gray silt-loame0
Not reportedInteractorTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved soil aggregation by 400% in one soil, a gray silt-loam high in organic matter (OM) and phosphorus”
e1“peas”
Claim · model-written summary
Pea seed yield increased significantly by 57% in low-organic-matter yellow clay loam.
- Taxon
- peasLathyrus oleraceuse1
- Outcome
- seed yielde0
- Direction
- enhancede0
- Value
- 57%e0
- Setting
- yellow clay-loame0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In another soil, a yellow clay-loam low in OM and phosphorus, seed yield was enhanced significantly (57%)”
e1“peas”
Claim · model-written summary
Soil aggregation changed by 50% in yellow clay loam.
- Taxon
- peasLathyrus oleraceuse1
- Outcome
- aggregatione0
- Direction
- changee0
- Value
- 50%e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was only a small change (50%) in aggregation”
e1“peas”
Claim · model-written summary
The authors inferred that Glomus mosseae influenced carbon allocation between peas and soil.
- Taxon
- peasLathyrus oleraceuse1
- Interactor
- VAM funguse0symbiont
- Outcome
- carbon allocatione0
- Qualifier
- between the plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“carbon allocation between the plant (measured as seed yield) and the soil (measured as the formation of water-stable aggregates) is influenced by this VAM fungus”
e1“peas”
The same questions in other papers
Funneliformis mosseae · yield · Lathyrus oleraceus (pea)Results differ
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
mycorrhiza · yield · Lathyrus oleraceus (pea)Positive and negative results
2 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
14 papers more in this group
See all 18 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.