Abstract
There are many reported benefits to plants of arbuscular mycorrhizal fungi (AMF), including positive plant biomass responses; however, AMF can also induce biomass depressions in plants, and this response receives little attention in the literature. High-throughput phenotyping (HTP) technology permits repeated measures of an individual plant’s aboveground biomass. We examined the effect on AMF inoculation on the shoot biomass of three contrasting plant species: a vegetable crop (tomato), a cereal crop (barley), and a pasture legume (Medicago). We also considered the interaction of mycorrhizal growth responses with plant-available soil zinc (Zn) and phosphorus (P) concentrations. The appearance of a depression in shoot biomass due to inoculation with AMF occurred at different times for each plant species; depressions appeared earliest in tomato, then Medicago, and then barley. The usually positive-responding Medicago plants were not responsive at the high level of soil available P used. Mycorrhizal growth responsiveness in all three species was also highly interactive with soil Zn supply; tomato growth responded negatively to AMF inoculation in all soil Zn treatments except the toxic soil Zn treatment, where it responded positively. Our results illustrate how context-dependent mycorrhizal growth responses are and the value of HTP approaches to exploring the complexity of mycorrhizal responses.
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Claims 7
Claim · model-written summary
AMF inoculation depressed tomato shoot biomass earliest of the three species.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- inoculation with AMFe0
- Interactor
- AMFe0symbiont
- Outcome
- shoot biomasse0
- Direction
- depressione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The appearance of a depression in shoot biomass due to inoculation with AMF occurred at different times for each plant species; depressions appeared earliest in tomato, then Medicago, and then barley.”
Claim · model-written summary
AMF inoculation depressed Medicago shoot biomass after tomato.
MedicagoNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The appearance of a depression in shoot biomass due to inoculation with AMF occurred at different times for each plant species; depressions appeared earliest in tomato, then Medicago, and then barley.”
Claim · model-written summary
AMF inoculation depressed barley shoot biomass after tomato and Medicago.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- inoculation with AMFe0
- Interactor
- AMFe0symbiont
- Outcome
- shoot biomasse0
- Direction
- depressione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The appearance of a depression in shoot biomass due to inoculation with AMF occurred at different times for each plant species; depressions appeared earliest in tomato, then Medicago, and then barley.”
Claim · model-written summary
Medicago did not respond to AMF at high soil available phosphorus.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The usually positive-responding Medicago plants were not responsive at the high level of soil available P used.”
Claim · model-written summary
Tomato growth responded negatively to AMF inoculation across soil Zn treatments other than toxic Zn.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- AMF inoculatione0
- Interactor
- AMFe0symbiont
- Outcome
- tomato growthe0
- Direction
- negativelye0
- Qualifier
- all soil Zn treatments except the toxic soil Zn treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tomato growth responded negatively to AMF inoculation in all soil Zn treatments except the toxic soil Zn treatment, where it responded positively.”
Claim · model-written summary
Tomato growth responded positively to AMF inoculation under toxic soil Zn.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- AMF inoculatione0
- Interactor
- AMFe0symbiont
- Outcome
- tomato growthe0
- Direction
- positivelye0
- Qualifier
- toxic soil Zn treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tomato growth responded negatively to AMF inoculation in all soil Zn treatments except the toxic soil Zn treatment, where it responded positively.”
Claim · model-written summary
Mycorrhizal growth responsiveness interacted strongly with soil Zn supply in all three species.
Not reportedDirection
Verbatim
e0“Mycorrhizal growth responsiveness in all three species was also highly interactive with soil Zn supply”
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386 papers in the same direction as this paper · 53 in the opposite direction · 1 reporting no difference from an alternative
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See all 441 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.