Abstract
ABSTRACT Vesicular-arbuscular mycorrhizal (VAM) fungi indigenous in the soil of the semi arid northern Negev of Israel greatly enhanced phosphorus (P) uptake of mycorrhizal pepper plants in three out of four soils tested and at four P levels. In a calcareous loess soil, additions of superphosphate equivalent to 3,000 kg ha−1 could not alleviate the absence of the VAM association. Increasing internal leaf P levels were correlated closely with a stimulation of flower bud production in pepper. Subsequent planting of onion in the same soils with no further P addition revealed the total dependency of this species on the VAM symbiosis. Mycorrhizal infection reduced by half the R/S ratios of onion plants, mainly by the enhancement of shoot growth. Results indicate the presence of a highly efficient VAM population in the loess soil. These findings are considered with regard to the evolution of the mycorrhizal association and its effect on plant morphology and physiological processes.
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Claims 7
Claim · model-written summary
Indigenous VAM fungi enhanced phosphorus uptake of pepper in three of four soils at four P levels.
- Taxon
- peppere0
- Treatment
- Vesicular-arbuscular mycorrhizal (VAM) fungie0
- Interactor
- Vesicular-arbuscular mycorrhizal (VAM) fungie0symbiont
- Outcome
- phosphorus (P) uptakee0
- Direction
- enhancede0
- Setting
- northern Negev of Israele0
Not reportedComparator
Verbatim
e0“Vesicular-arbuscular mycorrhizal (VAM) fungi indigenous in the soil of the semi arid northern Negev of Israel greatly enhanced phosphorus (P) uptake of mycorrhizal pepper plants in three out of four soils tested and at four P levels.”
Claim · model-written summary
Superphosphate did not compensate for absent VAM in calcareous loess soil.
- Taxon
- peppere1
- Treatment
- additions of superphosphate equivalent to 3,000 kg ha−1e0
- Interactor
- VAMe0symbiont
- Outcome
- absence of the VAM associatione0
- Direction
- could not alleviatee0
Not reportedComparator
Verbatim
e0“In a calcareous loess soil, additions of superphosphate equivalent to 3,000 kg ha−1 could not alleviate the absence of the VAM association.”
e1“mycorrhizal pepper plants”
Claim · model-written summary
Pepper leaf P levels correlated with flower bud production.
Verbatim
e0“Increasing internal leaf P levels were correlated closely with a stimulation of flower bud production in pepper.”
Claim · model-written summary
Onion depended on VAM symbiosis without further phosphorus addition.
- Taxon
- onion
Allium cepae0 - Interactor
- VAMe0symbiont
- Outcome
- total dependency of this species on the VAM symbiosise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subsequent planting of onion in the same soils with no further P addition revealed the total dependency of this species on the VAM symbiosis.”
Claim · model-written summary
Mycorrhizal infection halved onion root to shoot ratios.
- Taxon
- onionAllium cepae0
- Treatment
- Mycorrhizal infectione0
- Interactor
- Mycorrhizale0symbiont
- Outcome
- R/S ratiose0
- Direction
- reducede0
- Value
- by halfe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycorrhizal infection reduced by half the R/S ratios of onion plants, mainly by the enhancement of shoot growth.”
Claim · model-written summary
Mycorrhizal infection enhanced onion shoot growth.
- Taxon
- onionAllium cepae0
- Treatment
- Mycorrhizal infectione0
- Interactor
- Mycorrhizale0symbiont
- Outcome
- shoot growthe0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycorrhizal infection reduced by half the R/S ratios of onion plants, mainly by the enhancement of shoot growth.”
Claim · model-written summary
The results indicate a highly efficient VAM population in loess soil.
- Taxon
- onionAllium cepae1
- Interactor
- VAMe0symbiont
- Outcome
- highly efficient VAM populatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results indicate the presence of a highly efficient VAM population in the loess soil.”
e1“onion plants”
The same questions in other papers
mycorrhiza · growth · Allium cepa (onion)Results differ
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- no effect
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See all 53 papers →infection · growth · Allium cepa (onion)Positive and negative results
7 papers in the same direction as this paper · 2 in the opposite direction
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See all 10 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.