Abstract
The growth response of greenhouse cucumber (Cucumis sativus L.) to infection by vesicular–arbuscular mycorrhizal (VAM) fungi and to 4, 12 and 20 mg L −1 of phosphorus (P) nutrition was characterized over 38 d of plant establishment. Although maximum growth rates were not reached with the P levels studied, foliar concentrations of P were consistent with those published for healthy cucumber plants. Plants were highly receptive to colonization by Glomus mosseae, G. dimorphicum and G. intraradices. Infection by all species decreased as P nutrition increased; however, growth rates of primary yield components (e.g., stem and leaf dry weights, leaf area) of VAM-infected plants were greater than those of noninfected plants at all levels of P nutrition. The VAM-enhanced growth was similar to that induced by increases in P nutrition. The VAM-infected plants had lower concentrations of soluble nitrogen (N) than noninfected plants early in development; however, N concentrations were equal by 38 d after planting. Total soluble carbohydrate concentration of leaves of noninfected plants increased 62% faster than that of leaves of VAM-infected plants, possibly due to decreased export and a higher degree of P stress in the non-infected plants. Relative to noninfected plants, higher concentration of soluble carbohydrates in roots of VAM-infected plants may indicate increased sink demand to support the symbiosis. Since VAM stimulated growth at levels of P nutrition considered nondeficient by tissue analysis, use of VAM to accelerate the early development of transplants may be advantageous to the greenhouse industry. Key words:Cucumis sativus L., phosphorus, vesicular–arbuscular mycorrhizal fungi, mineral nutrition
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Claims 13
Claim · model-written summary
The phosphorus levels studied did not attain maximum growth rates.
- Taxon
- cucumber
Cucumis sativust0 - Outcome
- maximum growth rates were not reached with the P levels studiede0
- Direction
- not reachede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum growth rates were not reached with the P levels studied”
t0“cucumber”
Claim · model-written summary
Foliar phosphorus concentrations matched published healthy cucumber levels.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- foliar concentrations of P were consistent with those published for healthy cucumber plantse0
- Comparator
- those published for healthy cucumber plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar concentrations of P were consistent with those published for healthy cucumber plants”
Claim · model-written summary
Cucumber plants were highly receptive to colonization by Glomus mosseae.
- Taxon
- cucumberCucumis sativust0
- Interactor
- Glomus mosseae
Funneliformis mosseaee0symbiont - Outcome
- Plants were highly receptive to colonization by Glomus mosseae, G. dimorphicum and G. intraradicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were highly receptive to colonization by Glomus mosseae, G. dimorphicum and G. intraradices”
t0“cucumber”
Claim · model-written summary
Cucumber plants were highly receptive to colonization by G. dimorphicum.
- Taxon
- cucumberCucumis sativust0
- Interactor
- G. dimorphicumGlomus dimorphicume0symbiont
- Outcome
- Plants were highly receptive to colonization by Glomus mosseae, G. dimorphicum and G. intraradicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were highly receptive to colonization by Glomus mosseae, G. dimorphicum and G. intraradices”
t0“cucumber”
Claim · model-written summary
Cucumber plants were highly receptive to colonization by G. intraradices.
- Taxon
- cucumberCucumis sativust0
- Interactor
- G. intraradicesRhizophagus intraradicese0symbiont
- Outcome
- Plants were highly receptive to colonization by Glomus mosseae, G. dimorphicum and G. intraradicese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants were highly receptive to colonization by Glomus mosseae, G. dimorphicum and G. intraradices”
t0“cucumber”
Claim · model-written summary
Mycorrhizal infection decreased as phosphorus nutrition increased.
- Taxon
- cucumberCucumis sativust0
- Treatment
- P nutritione0
- Outcome
- Infection by all species decreased as P nutrition increasede0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Infection by all species decreased as P nutrition increased”
t0“cucumber”
Claim · model-written summary
Mycorrhizal infection increased stem and leaf dry weights and leaf area across phosphorus levels.
- Taxon
- cucumberCucumis sativust0
- Treatment
- VAM-infectede0
- Outcome
- growth rates of primary yield components (e.g., stem and leaf dry weights, leaf area) of VAM-infected plants were greater than those of noninfected plants at all levels of P nutritione0
- Direction
- greatere0
- Comparator
- noninfected plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth rates of primary yield components (e.g., stem and leaf dry weights, leaf area) of VAM-infected plants were greater than those of noninfected plants at all levels of P nutrition”
t0“cucumber”
Claim · model-written summary
Mycorrhizal and phosphorus-induced growth enhancement were similar.
- Taxon
- cucumberCucumis sativust0
- Outcome
- The VAM-enhanced growth was similar to that induced by increases in P nutritione0
- Comparator
- increases in P nutritione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The VAM-enhanced growth was similar to that induced by increases in P nutrition”
t0“cucumber”
Claim · model-written summary
Mycorrhizal plants had less soluble nitrogen early in development.
- Taxon
- cucumberCucumis sativust0
- Treatment
- VAM-infectede0
- Outcome
- The VAM-infected plants had lower concentrations of soluble nitrogen (N) than noninfected plants early in developmente0
- Direction
- lowere0
- Comparator
- noninfected plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The VAM-infected plants had lower concentrations of soluble nitrogen (N) than noninfected plants early in development”
t0“cucumber”
Claim · model-written summary
Soluble nitrogen concentrations were equal by day 38.
- Taxon
- cucumberCucumis sativust0
- Outcome
- N concentrations were equal by 38 d after plantinge0
- Direction
- equale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N concentrations were equal by 38 d after planting”
t0“cucumber”
Claim · model-written summary
Leaf soluble carbohydrates rose 62% faster without mycorrhizal infection.
- Taxon
- cucumberCucumis sativust0
- Outcome
- Total soluble carbohydrate concentration of leaves of noninfected plants increased 62% faster than that of leaves of VAM-infected plantse0
- Direction
- increasede0
- Value
- 62%e0
- Comparator
- VAM-infected plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total soluble carbohydrate concentration of leaves of noninfected plants increased 62% faster than that of leaves of VAM-infected plants”
t0“cucumber”
Claim · model-written summary
Mycorrhizal roots had higher soluble carbohydrate concentration.
- Taxon
- cucumberCucumis sativust0
- Outcome
- higher concentration of soluble carbohydrates in roots of VAM-infected plantse0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher concentration of soluble carbohydrates in roots of VAM-infected plants”
t0“cucumber”
Claim · model-written summary
The authors suggest VAM use to accelerate greenhouse transplant establishment.
- Taxon
- cucumberCucumis sativust0
- Outcome
- use of VAM to accelerate the early development of transplants may be advantageous to the greenhouse industrye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“use of VAM to accelerate the early development of transplants may be advantageous to the greenhouse industry”
t0“cucumber”
The same questions in other papers
mycorrhiza · yield · Cucumis sativus (cucumber)Results differ
10 papers in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- negative
10 papers more in this group
See all 14 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.