Abstract
This study investigated the potential of the arbuscular mycorrhizal (AM) fungus Glomus mosseae to protect basil ( Ocimum basilicum ) against Fusarium oxysporum f.sp. basilici ( Fob ). It was hypothesised that G. mosseae could confer a bioprotective effect against Fob as a result of increases in leaf rosmarinic (RA) and caffeic acids (CA) or essential oil concentrations. Glomus mosseae conferred a bioprotective effect against Fob by reducing plant mortality to 20% compared to 33% in non‐mycorrhizal (NM) plants. This bioprotective effect was not related to improved phosphorus (P) nutrition, as AM and NM plants treated with Fob had similar shoot P concentrations (6 and 8 mg g −1 dry weight (DW), respectively). Both AM and NM plants treated with Fob had similar leaf and root RA and CA concentrations. Furthermore, phenolic (40–70 mg CA g −1 DW) or essential oil concentrations (0·1–0·6 mg g −1 DW) were not increased in plants treated with the AM fungus and Fob . Therefore, the bioprotective effect conferred by G. mosseae was not a result of increases in the phytochemicals tested in this study. However, under the AM symbiosis, basil plants treated with Fob had lower methyleugenol concentrations in their leaves (0·1 mg g −1 DW) than NM plants treated with the pathogen (0·6 mg g −1 DW).
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Claims 6
Claim · model-written summary
Glomus mosseae lowered Fusarium-associated basil mortality to 20% versus 33% without mycorrhiza.
- Taxon
- basil
Ocimum basilicumt0 - Treatment
- Glomus mosseaee0
- Interactor
- Fobe0pathogen
- Second interactor
- Glomus mosseae
Funneliformis mosseaee0symbiont - Outcome
- plant mortalitye0
- Direction
- reducinge0
- Value
- 20%e0
- Comparator
- non‐mycorrhizal (NM) plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glomus mosseae conferred a bioprotective effect against Fob by reducing plant mortality to 20% compared to 33% in non‐mycorrhizal (NM) plants.”
t0“in basil inoculated with Fusarium oxysporum f.sp. basilici”
Claim · model-written summary
Shoot P concentrations were similar in mycorrhizal and nonmycorrhizal Fusarium-treated plants.
- Taxon
- basilOcimum basilicumt0
- Interactor
- Fobe0pathogen
- Outcome
- shoot P concentrationse0
- Value
- 6 and 8 mg g −1 dry weight (DW)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AM and NM plants treated with Fob had similar shoot P concentrations (6 and 8 mg g −1 dry weight (DW), respectively).”
t0“in basil inoculated with Fusarium oxysporum f.sp. basilici”
Claim · model-written summary
Leaf and root RA and CA concentrations were similar across mycorrhizal status with Fusarium.
- Taxon
- basilOcimum basilicumt0
- Interactor
- Fobe0pathogen
- Outcome
- leaf and root RA and CA concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both AM and NM plants treated with Fob had similar leaf and root RA and CA concentrations.”
t0“in basil inoculated with Fusarium oxysporum f.sp. basilici”
Claim · model-written summary
Phenolic concentrations did not increase under AM fungus and Fusarium treatment.
- Taxon
- basilOcimum basilicumt0
- Treatment
- AM fungus and Fobe0
- Interactor
- Fobe0pathogen
- Outcome
- phenolice0
- Direction
- not increasede0
- Value
- 40–70 mg CA g −1 DWe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phenolic (40–70 mg CA g −1 DW) or essential oil concentrations (0·1–0·6 mg g −1 DW) were not increased in plants treated with the AM fungus and Fob”
t0“in basil inoculated with Fusarium oxysporum f.sp. basilici”
Claim · model-written summary
Essential oil concentrations did not increase under AM fungus and Fusarium treatment.
- Taxon
- basilOcimum basilicumt0
- Treatment
- AM fungus and Fobe0
- Interactor
- Fobe0pathogen
- Outcome
- essential oil concentrationse0
- Direction
- not increasede0
- Value
- 0·1–0·6 mg g −1 DWe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phenolic (40–70 mg CA g −1 DW) or essential oil concentrations (0·1–0·6 mg g −1 DW) were not increased in plants treated with the AM fungus and Fob”
t0“in basil inoculated with Fusarium oxysporum f.sp. basilici”
Claim · model-written summary
Under mycorrhiza, Fusarium-treated basil had lower leaf methyleugenol than nonmycorrhizal plants.
- Taxon
- basilOcimum basilicume0
- Interactor
- Fobe0pathogen
- Outcome
- methyleugenol concentrations in their leavese0
- Direction
- lowere0
- Value
- 0·1 mg g −1 DWe0
- Comparator
- NM plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under the AM symbiosis, basil plants treated with Fob had lower methyleugenol concentrations in their leaves (0·1 mg g −1 DW) than NM plants treated with the pathogen (0·6 mg g −1 DW).”
The same questions in other papers
mycorrhiza · quality: phytochemicals · Ocimum basilicum (basil)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
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.