Abstract
Arbuscular mycorrhizal (AM) fungi are known to promote plant growth and nutrient uptake, but their role in nitrogen (N) uptake still remains unclear. Therefore, a pot experiment was set up to evaluate the impacts of N addition and AM inoculation (Diversispora eburnea, Claroideoglomus etunicatum, Paraglomus occultum, and their mixture) on AM root colonization, plant biomass, N and P nutrition in Elymus nutans. Our results showed that AM root colonization was unaffected by N addition but was significantly affected by different AM fungal species. D. eburnea and C. etunicatum showed significant higher root colonization than P. occultum. The E. nutans exhibited the highest biomass when inoculated with D. eburnea and significantly higher than non-mycorrhizal (the control) regardless of N addition. Under N addition treatment, D. eburnea significantly enhanced P content of roots, N content of shoots and roots, while AM mixture significantly enhanced shoot P content compared with non-mycorrhizal. However, N and P content in shoots and roots did not significantly vary among treatments when no N was added. In addition, inoculation with C. etunicatum and P. occultum showed no significant effect on plant biomass, N and P content regardless of N addition. In conclusion, this study revealed that the plant response to N addition depends on AM fungal species and also confirmed that significant functional diversity exists among AM fungal species.
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Claims 11
Claim · model-written summary
Nitrogen addition did not affect AM root colonization.
- Taxon
- Elymus nutansCampeiostachys nutanst0
- Treatment
- N additione0
- Outcome
- AM root colonizatione0
- Direction
- unaffectede0
Not reportedComparator
Verbatim
e0“AM root colonization was unaffected by N addition”
t0“Elymus nutans”
Claim · model-written summary
AM root colonization varied significantly by fungal species.
- Taxon
- Elymus nutansCampeiostachys nutanst0
- Interactor
- AM fungal speciese0symbiont
- Outcome
- AM root colonizatione0
Not reportedDirection
Verbatim
e0“AM root colonization was unaffected by N addition but was significantly affected by different AM fungal species”
t0“Elymus nutans”
Claim · model-written summary
D. eburnea had higher root colonization than P. occultum.
- Taxon
- Elymus nutansCampeiostachys nutanst0
- Interactor
- D. eburneaDiversispora eburneae0symbiont
- Outcome
- root colonizatione0
- Direction
- highere0
- Comparator
- P. occultume0
Verbatim
e0“D. eburnea and C. etunicatum showed significant higher root colonization than P. occultum”
t0“Elymus nutans”
Claim · model-written summary
C. etunicatum had higher root colonization than P. occultum.
- Taxon
- Elymus nutansCampeiostachys nutanst0
- Interactor
- C. etunicatum
Entrophospora etunicatae0symbiont - Outcome
- root colonizatione0
- Direction
- highere0
- Comparator
- P. occultume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“D. eburnea and C. etunicatum showed significant higher root colonization than P. occultum”
t0“Elymus nutans”
Claim · model-written summary
D. eburnea inoculation yielded the highest biomass, above the non-mycorrhizal control regardless of nitrogen addition.
- Taxon
- E. nutansCampeiostachys nutanse0
- Treatment
- inoculated with D. eburneae0
- Interactor
- D. eburneaDiversispora eburneae0symbiont
- Outcome
- biomasse0
- Direction
- higheste0
- Qualifier
- regardless of N additione0
- Comparator
- non-mycorrhizal (the control)e0
Verbatim
e0“The E. nutans exhibited the highest biomass when inoculated with D. eburnea and significantly higher than non-mycorrhizal (the control) regardless of N addition”
Claim · model-written summary
Under nitrogen addition, D. eburnea increased root phosphorus content compared with non-mycorrhizal plants.
- Taxon
- Elymus nutansCampeiostachys nutanst0
- Treatment
- D. eburneae0
- Interactor
- D. eburneaDiversispora eburneae0symbiont
- Outcome
- P content of rootse0
- Direction
- enhancede0
- Qualifier
- Under N addition treatmente0
- Comparator
- non-mycorrhizale0
Verbatim
e0“Under N addition treatment, D. eburnea significantly enhanced P content of roots, N content of shoots and roots, while AM mixture significantly enhanced shoot P content compared with non-mycorrhizal”
t0“Elymus nutans”
Claim · model-written summary
Under nitrogen addition, D. eburnea increased nitrogen content in shoots and roots.
- Taxon
- Elymus nutansCampeiostachys nutanst0
- Treatment
- D. eburneae0
- Interactor
- D. eburneaDiversispora eburneae0symbiont
- Outcome
- N content of shoots and rootse0
- Direction
- enhancede0
- Qualifier
- Under N addition treatmente0
- Comparator
- non-mycorrhizale0
Verbatim
e0“Under N addition treatment, D. eburnea significantly enhanced P content of roots, N content of shoots and roots, while AM mixture significantly enhanced shoot P content compared with non-mycorrhizal”
t0“Elymus nutans”
Claim · model-written summary
Under nitrogen addition, the AM mixture increased shoot phosphorus content.
Verbatim
e0“Under N addition treatment, D. eburnea significantly enhanced P content of roots, N content of shoots and roots, while AM mixture significantly enhanced shoot P content compared with non-mycorrhizal”
t0“Elymus nutans”
Claim · model-written summary
Without added nitrogen, shoot and root nitrogen and phosphorus content did not vary significantly among treatments.
- Taxon
- Elymus nutansCampeiostachys nutanst0
- Outcome
- N and P content in shoots and rootse0
- Direction
- did not significantly varye0
- Qualifier
- when no N was addede0
Verbatim
e0“N and P content in shoots and roots did not significantly vary among treatments when no N was added”
t0“Elymus nutans”
Claim · model-written summary
C. etunicatum inoculation had no significant effect on biomass or shoot and root nitrogen and phosphorus content.
- Taxon
- Elymus nutansCampeiostachys nutanst0
- Treatment
- inoculation with C. etunicatume0
- Interactor
- C. etunicatumEntrophospora etunicatae0symbiont
- Outcome
- plant biomass, N and P contente0
- Direction
- no significant effecte0
- Qualifier
- regardless of N additione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation with C. etunicatum and P. occultum showed no significant effect on plant biomass, N and P content regardless of N addition”
t0“Elymus nutans”
Claim · model-written summary
P. occultum inoculation had no significant effect on biomass or shoot and root nitrogen and phosphorus content.
- Taxon
- Elymus nutansCampeiostachys nutanst0
- Treatment
- P. occultume0
- Interactor
- P. occultumParaglomus occultume0symbiont
- Outcome
- plant biomass, N and P contente0
- Direction
- no significant effecte0
- Qualifier
- regardless of N additione0
Not reportedComparator
Verbatim
e0“inoculation with C. etunicatum and P. occultum showed no significant effect on plant biomass, N and P content regardless of N addition”
t0“Elymus nutans”
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See all 5 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.