Distinct arbuscular mycorrhizal fungal communities associate with different manioc landraces and Amazonian soils

Clara P. Peña-Venegas, Thomas Kuijper, John Davison, Teele Jairus, Martti Vasar, Tjeerd Jan Stomph, Paul C. Struik, Maarja Öpik

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Manioc (Manihot esculenta Crantz) is an important tropical crop that depends on arbuscular mycorrhizal (AM) association for its nutrition. However, little is known about the richness and species composition of AM fungal communities associating with manioc and possible differences across soils and manioc landraces. We studied the diversity and composition of AM fungal communities present in the roots of different manioc landraces and surrounding soils in indigenous shifting cultivation fields on different Amazonian soil types. A total of 126 AM fungal virtual taxa (VT; phylogenetically defined taxonomic units) were recovered from soil and root samples using 454 sequencing of AM fungal SSU rRNA gene amplicons. Different AM fungal communities occurred in different soil types. Minor differences occurred in the composition of AM fungal community associating with different manioc landraces, but AM fungal richness was not different among them. There was a low similarity between the AM fungal communities colonizing manioc roots and those recorded in the soil, independently of differences in soil properties or the manioc landrace evaluated. Rhizophagus manihotis and Glomus VT126 were the most abundant AM fungal species colonizing manioc roots. Contrasting with the results of earlier spore-based investigations, all the AM fungi identified as indicator species of particular manioc landraces were morphologically unknown Glomus species. In conclusion, different manioc landraces growing in common conditions associated with distinct AM fungal communities, whereby AM fungal communities in soils did not necessarily reflect the AM fungal communities colonizing manioc roots.
LanguageEnglish
Pages263-275
JournalMycorrhiza
Volume29
Issue number3
DOIs
Publication statusPublished - 1 May 2019

Fingerprint

Manihot
fungal communities
cassava
landraces
Soil
soil
soil type
shifting cultivation
Glomus
nutrition
spore
soil types
soil property
fungus
tropical and subtropical crops
crop
Manihot esculenta
gene
soil fungi
Spores

Keywords

  • Amazon region
  • Arbuscular mycorrhizal fungal virtual taxa
  • Cassava
  • Manihot esculenta
  • Shifting agriculture

Cite this

Peña-Venegas, Clara P. ; Kuijper, Thomas ; Davison, John ; Jairus, Teele ; Vasar, Martti ; Stomph, Tjeerd Jan ; Struik, Paul C. ; Öpik, Maarja. / Distinct arbuscular mycorrhizal fungal communities associate with different manioc landraces and Amazonian soils. In: Mycorrhiza. 2019 ; Vol. 29, No. 3. pp. 263-275.
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abstract = "Manioc (Manihot esculenta Crantz) is an important tropical crop that depends on arbuscular mycorrhizal (AM) association for its nutrition. However, little is known about the richness and species composition of AM fungal communities associating with manioc and possible differences across soils and manioc landraces. We studied the diversity and composition of AM fungal communities present in the roots of different manioc landraces and surrounding soils in indigenous shifting cultivation fields on different Amazonian soil types. A total of 126 AM fungal virtual taxa (VT; phylogenetically defined taxonomic units) were recovered from soil and root samples using 454 sequencing of AM fungal SSU rRNA gene amplicons. Different AM fungal communities occurred in different soil types. Minor differences occurred in the composition of AM fungal community associating with different manioc landraces, but AM fungal richness was not different among them. There was a low similarity between the AM fungal communities colonizing manioc roots and those recorded in the soil, independently of differences in soil properties or the manioc landrace evaluated. Rhizophagus manihotis and Glomus VT126 were the most abundant AM fungal species colonizing manioc roots. Contrasting with the results of earlier spore-based investigations, all the AM fungi identified as indicator species of particular manioc landraces were morphologically unknown Glomus species. In conclusion, different manioc landraces growing in common conditions associated with distinct AM fungal communities, whereby AM fungal communities in soils did not necessarily reflect the AM fungal communities colonizing manioc roots.",
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Distinct arbuscular mycorrhizal fungal communities associate with different manioc landraces and Amazonian soils. / Peña-Venegas, Clara P.; Kuijper, Thomas; Davison, John; Jairus, Teele; Vasar, Martti; Stomph, Tjeerd Jan; Struik, Paul C.; Öpik, Maarja.

In: Mycorrhiza, Vol. 29, No. 3, 01.05.2019, p. 263-275.

Research output: Contribution to journalArticleAcademicpeer-review

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