Paper · 2026 · Mycorrhiza

Arbuscular mycorrhizal fungi change root morphology and nutrient use efficiency in the tree legume Mimosa scabrella

Silmar Primieri; Murilo Dalla Costa; Tássio Dresch Rech; et al.

10
claims
24
verbatim quotes
0
citations
4
research areas
✓
Open access · cc-by

Abstract

Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass. This plant interacts simultaneously with multiple microbial partners in symbiosis, including arbuscular mycorrhizal fungi (AMF). However, the extent of the fungal role and the impact of different AMF species on growth and nutrition remain unclear. This study aimed to evaluate the effects of three AMF species on the growth, nutrient uptake, and root traits of M. scabrella seedlings under varying phosphorus (P) levels. Seedlings were cultivated in a greenhouse for 60 days in sterile sand-soil inoculated with Acaulospora colombiana (AC), A. morrowiae (AM), and Rhizophagus clarus (RC) across five P levels (0; 20; 40; 80; or 160 mg dm⁻³). AMF inoculation strongly enhanced plant growth and nutrient acquisition across P levels, with high levels of mycorrhizal colonization observed even at the highest P concentrations. Biomass production varied among AMF species: AC and RC increased growth 11.6x and 11.7x, respectively, while A. morrowiae promoted a 5.1x increase. Inoculated plants showed reduced specific root length and greater average root diameter (except at 160 mg P dm⁻³), suggesting a potential shift in resource allocation. Concentrations of N, P, and K, as well as nutrient use efficiency (NUE), were consistently elevated in inoculated seedlings, though increases in NUE may partly reflect overall plant size. Despite all AMF species yielding positive results, AC and RC were notably more effective than AM. These findings highlight the importance of considering AMF host preference and local soil conditions in optimizing plant-AMF symbioses. Such optimizations are crucial for enhancing practices in forestry, agriculture, and environmental reclamation. While our results indicate high mycorrhizal responsiveness, the co-inoculation with Burkholderia spp. necessitates caution in inferring true mycorrhizal dependence, and the functional significance of high colonization at elevated P requires further investigation.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

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Claims 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

AMF inoculation strongly enhanced growth and nutrient acquisition of Mimosa scabrella across phosphorus levels.

Taxon
Mimosa scabrellaMimosa scabrellae0
Treatment
AMF inoculatione1
Interactor
AMFe1symbiont
Outcome
plant growth and nutrient acquisitione1
Direction
enhancede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e1

“AMF inoculation strongly enhanced plant growth and nutrient acquisition across P levels”

✓ located verbatim in the source · abstract, characters 770–857 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Acaulospora colombiana increased Mimosa scabrella growth 11.6 times.

Taxon
Mimosa scabrellaMimosa scabrellae0
Treatment
Acaulospora colombianae2
Interactor
Acaulospora colombianaAcaulospora colombianae2symbiont
Outcome
growthe3
Direction
increasede3
Value
11.6xe3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e2

“Seedlings were cultivated in a greenhouse for 60 days in sterile sand-soil inoculated with Acaulospora colombiana (AC), A. morrowiae (AM), and Rhizophagus clarus (RC)”

✓ located verbatim in the source · abstract, characters 549–715 · show in text ↑
e3

“Biomass production varied among AMF species: AC and RC increased growth 11.6x and 11.7x, respectively, while A. morrowiae promoted a 5.1x increase”

✓ located verbatim in the source · abstract, characters 951–1097 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Rhizophagus clarus increased Mimosa scabrella growth 11.7 times.

Taxon
Mimosa scabrellaMimosa scabrellae0
Treatment
Rhizophagus claruse2
Interactor
Rhizophagus clarusRhizophagus claruse2symbiont
Outcome
growthe3
Direction
increasede3
Value
11.7xe3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e2

“Seedlings were cultivated in a greenhouse for 60 days in sterile sand-soil inoculated with Acaulospora colombiana (AC), A. morrowiae (AM), and Rhizophagus clarus (RC)”

✓ located verbatim in the source · abstract, characters 549–715 · show in text ↑
e3

“Biomass production varied among AMF species: AC and RC increased growth 11.6x and 11.7x, respectively, while A. morrowiae promoted a 5.1x increase”

✓ located verbatim in the source · abstract, characters 951–1097 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A. morrowiae increased Mimosa scabrella growth 5.1 times.

Taxon
Mimosa scabrellaMimosa scabrellae0
Treatment
A. morrowiaee2
Interactor
A. morrowiaeAcaulospora morrowiaee2symbiont
Outcome
growthe3
Direction
promotede3
Value
5.1xe3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e2

“Seedlings were cultivated in a greenhouse for 60 days in sterile sand-soil inoculated with Acaulospora colombiana (AC), A. morrowiae (AM), and Rhizophagus clarus (RC)”

✓ located verbatim in the source · abstract, characters 549–715 · show in text ↑
e3

“Biomass production varied among AMF species: AC and RC increased growth 11.6x and 11.7x, respectively, while A. morrowiae promoted a 5.1x increase”

✓ located verbatim in the source · abstract, characters 951–1097 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Acaulospora colombiana and Rhizophagus clarus were more effective than A. morrowiae in Mimosa scabrella.

Taxon
Mimosa scabrellaMimosa scabrellae0
Outcome
positive resultse4
Direction
more effectivee4
Comparator
AMe4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e4

“Despite all AMF species yielding positive results, AC and RC were notably more effective than AM”

✓ located verbatim in the source · abstract, characters 1455–1551 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Inoculated Mimosa scabrella plants had reduced specific root length.

Taxon
Mimosa scabrellaMimosa scabrellae0
Treatment
Inoculated plantse5
Outcome
specific root lengthe5
Direction
reducede5

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e5

“Inoculated plants showed reduced specific root length and greater average root diameter (except at 160 mg P dm⁻³)”

✓ located verbatim in the source · abstract, characters 1099–1212 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Inoculated Mimosa scabrella plants had greater average root diameter, except at 160 mg P dm⁻³.

Taxon
Mimosa scabrellaMimosa scabrellae0
Treatment
Inoculated plantse5
Outcome
average root diametere5
Direction
greatere5
Qualifier
except at 160 mg P dm⁻³e5

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e5

“Inoculated plants showed reduced specific root length and greater average root diameter (except at 160 mg P dm⁻³)”

✓ located verbatim in the source · abstract, characters 1099–1212 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Inoculated Mimosa scabrella seedlings had elevated N, P and K concentrations.

Taxon
Mimosa scabrellaMimosa scabrellae0
Treatment
inoculated seedlingse6
Outcome
Concentrations of N, P, and Ke6
Direction
elevatede6

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e6

“Concentrations of N, P, and K, as well as nutrient use efficiency (NUE), were consistently elevated in inoculated seedlings”

✓ located verbatim in the source · abstract, characters 1267–1390 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Inoculated Mimosa scabrella seedlings had elevated nutrient use efficiency, possibly partly reflecting plant size.

Taxon
Mimosa scabrellaMimosa scabrellae0
Treatment
inoculated seedlingse6
Outcome
nutrient use efficiency (NUE)e6
Direction
elevatede6
Qualifier
though increases in NUE may partly reflect overall plant sizee7

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e6

“Concentrations of N, P, and K, as well as nutrient use efficiency (NUE), were consistently elevated in inoculated seedlings”

✓ located verbatim in the source · abstract, characters 1267–1390 · show in text ↑
e7

“though increases in NUE may partly reflect overall plant size”

✓ located verbatim in the source · abstract, characters 1392–1453 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

High levels of mycorrhizal colonization were observed in Mimosa scabrella even at the highest P concentrations.

Taxon
Mimosa scabrellaMimosa scabrellae0
Outcome
mycorrhizal colonizatione7
Qualifier
even at the highest P concentrationse7

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Mimosa scabrella
Mimosa scabrella · TaxonValerio Pillar · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Mimosa scabrella is a leguminous tree native to southern Brazil with high economic potential as a source of timber and biomass”

✓ located verbatim in the source · abstract, characters 0–126 · show in text ↑
e7

“with high levels of mycorrhizal colonization observed even at the highest P concentrations”

✓ located verbatim in the source · abstract, characters 859–949 · show in text ↑