Abstract
Abstract Despite a general consent about the beneficial contribution of arbuscular mycorrhizal fungi (AMF) on natural ecosystems, there is an intense debate about their role in agricultural systems. In this work, soybean ( Glycine max L.) and sunflower ( Helianthus annuus L.) field plots with different P availabilities were sampled across the Pampean Region of Argentina (> 150 samples from Mollisols) to characterize the relationship between available soil P and indigenous mycorrhizal colonization. A subsequent pot experiment with soybean and sunflower was carried out to evaluate the effect of P supply (0, 12, and 52 mg P kg –1 ) and AMF inoculation on AMF colonization and crop responsiveness to P in a Mollisol. Both crops showed high AMF colonization in the field (average: 55% for soybean and 44% for sunflower). While mycorrhizal colonization in soybean was significantly and negatively related to available soil P, no such trends were apparent in sunflower. Also, total biomass was 3.5 and 2.0 times higher in mycorrhizal than in nonmycorrhizal pot‐grown soybean under low‐ and medium‐P conditions, respectively. Sunflower, on the other hand, did not benefit from AMF symbiosis under medium and high P supply. While mycorrhization stimulated P‐uptake efficiency in soybean, the generally high P efficiency in sunflower was not associated with AMF symbiosis.
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Claims 10
Claim · model-written summary
Soybean field roots had an average 55% AMF colonization.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both crops showed high AMF colonization in the field (average: 55% for soybean and 44% for sunflower)”
Claim · model-written summary
Sunflower field roots had an average 44% AMF colonization.
- Taxon
- sunflower
Helianthus annuuse0 - Interactor
- AMFe0symbiont
- Outcome
- AMF colonizatione0
- Value
- 44%e0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both crops showed high AMF colonization in the field (average: 55% for soybean and 44% for sunflower)”
Claim · model-written summary
Soybean mycorrhizal colonization was significantly negatively related to available soil phosphorus.
- Taxon
- soybean
Glycine maxe0 - Interactor
- mycorrhizale0symbiont
- Compound
- available soil Pe0
- Outcome
- mycorrhizal colonizatione0
- Direction
- negativelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhizal colonization in soybean was significantly and negatively related to available soil P”
Claim · model-written summary
Sunflower colonization showed no apparent trend with available soil phosphorus.
- Taxon
- sunflowerHelianthus annuuse0
- Compound
- available soil Pe0
- Outcome
- trendse0
- Direction
- no such trendse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While mycorrhizal colonization in soybean was significantly and negatively related to available soil P, no such trends were apparent in sunflower”
Claim · model-written summary
Mycorrhizal soybean had 3.5 times the biomass of nonmycorrhizal soybean under low phosphorus.
- Taxon
- soybeanGlycine maxe0
- Treatment
- mycorrhizale0
- Interactor
- mycorrhizale0symbiont
- Outcome
- total biomasse0
- Direction
- highere0
- Value
- 3.5e0
- Qualifier
- low‐e0
- Comparator
- nonmycorrhizale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total biomass was 3.5 and 2.0 times higher in mycorrhizal than in nonmycorrhizal pot‐grown soybean under low‐ and medium‐P conditions”
Claim · model-written summary
Mycorrhizal soybean had 2.0 times the biomass of nonmycorrhizal soybean under medium phosphorus.
- Taxon
- soybeanGlycine maxe0
- Treatment
- mycorrhizale0
- Interactor
- mycorrhizale0symbiont
- Outcome
- total biomasse0
- Direction
- highere0
- Value
- 2.0e0
- Qualifier
- medium‐Pe0
- Comparator
- nonmycorrhizale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total biomass was 3.5 and 2.0 times higher in mycorrhizal than in nonmycorrhizal pot‐grown soybean under low‐ and medium‐P conditions”
Claim · model-written summary
Sunflower did not benefit from AMF symbiosis under medium phosphorus supply.
- Taxon
- SunflowerHelianthus annuuse0
- Treatment
- AMF symbiosise0
- Interactor
- AMFe0symbiont
- Outcome
- benefite0
- Direction
- did not benefite0
- Qualifier
- mediume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sunflower, on the other hand, did not benefit from AMF symbiosis under medium and high P supply”
Claim · model-written summary
Sunflower did not benefit from AMF symbiosis under high phosphorus supply.
- Taxon
- SunflowerHelianthus annuuse0
- Treatment
- AMF symbiosise0
- Interactor
- AMFe0symbiont
- Outcome
- benefite0
- Direction
- did not benefite0
- Qualifier
- high P supplye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sunflower, on the other hand, did not benefit from AMF symbiosis under medium and high P supply”
Claim · model-written summary
Mycorrhization stimulated soybean phosphorus uptake efficiency.
- Taxon
- soybeanGlycine maxe0
- Treatment
- mycorrhizatione0
- Interactor
- mycorrhizatione0symbiont
- Outcome
- P‐uptake efficiencye0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhization stimulated P‐uptake efficiency in soybean”
Claim · model-written summary
Sunflower had generally high phosphorus efficiency that was not associated with AMF symbiosis.
- Taxon
- sunflowerHelianthus annuuse0
- Interactor
- AMFe0symbiont
- Outcome
- P efficiencye0
- Direction
- not associatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“generally high P efficiency in sunflower was not associated with AMF symbiosis”
The same questions in other papers
mycorrhiza · growth · Glycine max (soybean)Positive and negative results
78 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- negative
83 papers more in this group
See all 87 papers →mycorrhiza · nutrient: efficiency · Glycine max (soybean)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.