An evidence-based consensus for the classification of arbuscular mycorrhizal fungi (Glomeromycota)

Redecker, Dirk; Schüßler, Arthur; Stockinger, Herbert; Stürmer, Sidney Luiz; Morton, Joseph B.; Walker, Christopher

doi:10.1007/s00572-013-0486-y

Cited by 538 publications

(357 citation statements)

References 33 publications

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“…In the rapidly evolving taxonomic classification of Glomeromycota (Redecker et al, 2013), the taxon named Gigasporaceae identifies a group of AMF with distinct features of spore morphology (size, wall layering, bulbous base, germination shield) and host root colonization patterns (lack of intraradical vesicles and formation of auxiliary cells). In addition, this lineage of Glomeromycota turns out to be a preferential niche for endobacteria.…”

Section: Discussionmentioning

confidence: 99%

Detection of a novel intracellular microbiome hosted in arbuscular mycorrhizal fungi

et al. 2013

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Arbuscular mycorrhizal fungi (AMF) are important members of the plant microbiome. They are obligate biotrophs that colonize the roots of most land plants and enhance host nutrient acquisition. Many AMF themselves harbor endobacteria in their hyphae and spores. Two types of endobacteria are known in Glomeromycota: rod-shaped Gram-negative Candidatus Glomeribacter gigasporarum, CaGg, limited in distribution to members of the Gigasporaceae family, and coccoid Mollicutes-related endobacteria, Mre, widely distributed across different lineages of AMF. The goal of the present study is to investigate the patterns of distribution and coexistence of the two endosymbionts, CaGg and Mre, in spore samples of several strains of Gigaspora margarita. Based on previous observations, we hypothesized that some AMF could host populations of both endobacteria. To test this hypothesis, we performed an extensive investigation of both endosymbionts in G. margarita spores sampled from Cameroonian soils as well as in the Japanese G. margarita MAFF520054 isolate using different approaches (molecular phylotyping, electron microscopy, fluorescence in situ hybridization and quantitative real-time PCR). We found that a single AMF host can harbour both types of endobacteria, with Mre population being more abundant, variable and prone to recombination than the CaGg one. Both endosymbionts seem to retain their genetic and lifestyle peculiarities regardless of whether they colonize the host alone or together. These findings show for the first time that fungi support an intracellular bacterial microbiome, in which distinct types of endobacteria coexist in a single cell.

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Section: Discussionmentioning

confidence: 99%

Detection of a novel intracellular microbiome hosted in arbuscular mycorrhizal fungi

et al. 2013

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“…Among the 16 OTUs, we retrieved sequences belonging to 6 out of the 11 Glomeromycota families (Redecker et al 2013). The most abundant family was represented by Acaulosporaceae, with Acaulospora cavernata as the only phylotype, accounting for 37.4 % of the sequences, followed by Glomeraceae (37.2 %) and Claroideoglomeraceae (23.6 %).…”

Section: Identification Of Root Colonizing Amfmentioning

confidence: 99%

Changes in the composition of native root arbuscular mycorrhizal fungal communities during a short-term cover crop-maize succession

et al. 2016

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Arbuscular mycorrhizal fungi (AMF) establish mutualistic associations with the most important agricultural food and feed crops, sustaining plant growth, nutrient uptake and tolerance of biotic and abiotic stresses. Scanty information is available on the role played by crop identity and diversity as a driving force shaping AMF species communities in the field, in particular in low-input and organic farming, where crop rotation and the use of cover crops are common practices. Here, using a molecular approach, we investigated whether plant communities established in low and high diversity cover crop treatments affect the composition of native AMF root communities of subsequent maize in a Mediterranean organic agroecosystem. A total of 16 AMF sequence types were detected, with Acaulospora cavernata as the most abundant phylotype, accounting for 37.4 % of the sequences, followed by Funneliformis mosseae, Claroideoglomus lamellosum and Rhizoglomus intraradices. Sequences matching to Funneliformis caledonium, Diversispora aurantia, Diversispora epigaea and Archaeospora schenckii corresponded to less than 2.0 % of the total. The most abundant sequences retrieved in plants from cover crop treatments were represented by A. cavernata, while sequences in maize roots were related to F. mosseae, R. intraradices and Glomus sp. Such data show for the first time a change in the composition of native AMF communities colonizing maize roots, which was independent of the identity and diversity of the preceding crop. Our findings suggest that host preference may represent a strong driver of AMF community dynamics in agroecosystems, differentially boosting or depressing AMF species, possibly in relation to their functional significance.

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“…pl/~jblaszkowski/). The assignment of AMF morphotypes to families and genera followed the consensus classification of Redecker et al (2013).…”

Section: Soil Analysismentioning

confidence: 99%

“…Most of the species belonged to the Acaulosporaceae (12 species) followed by the Glomeraceae (five species). Entrophospora infrequens was detected at only one site (ChH) but was not allocated to any family, as that species is considered incertae sedis by Redecker et al (2013).…”

Section: Species Compositionmentioning

confidence: 99%

Occurrence of arbuscular mycorrhizal fungi in high altitude sites of the Patagonian Altoandina region in Nahuel Huapi National Park (Argentina)

et al. 2016

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Knowledge of the occurrence and diversity of arbuscular mycorrhizal fungi (AMF) in National Parks is essential for the establishment of policies for conservation. Th e aim of this study was to characterize the AMF communities in the Patagonian Altoandina region in Nahuel Huapi National Park, Argentina. We surveyed AMF spores associated with the rhizospheres of 9 plant species in the Patagonian Steppe (PS), Challhuaco Hill (ChH), Catedral Hill (CH), and Tronador Hill (TH) regions and detected a total of 27 Glomeromycota species. Acaulospora laevis was dominant at all sites. Th e AMF community was dominated by Acaulosporaceae, as regards the number of species and contribution of each one to the total number of spores. Th ree Glomeromycota families were detected at PS, the site with the lowest elevation; whereas fi ve to six families were detected at ChH, CH, and TH. Cluster analysis indicated that the AMF communities were grouped according to habitat. We concluded that certain patterns of the AMFcommunity structure detected were equivalent to those of high-altitude environments from other studies, while others were unique to the Patagonian region; thus suggesting that historical infl uences like dispersion and speciation played a critical role in shaping AMF community composition in such high-altitude environments.

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An evidence-based consensus for the classification of arbuscular mycorrhizal fungi (Glomeromycota)

Cited by 538 publications

References 33 publications

Detection of a novel intracellular microbiome hosted in arbuscular mycorrhizal fungi

Detection of a novel intracellular microbiome hosted in arbuscular mycorrhizal fungi

Changes in the composition of native root arbuscular mycorrhizal fungal communities during a short-term cover crop-maize succession

Occurrence of arbuscular mycorrhizal fungi in high altitude sites of the Patagonian Altoandina region in Nahuel Huapi National Park (Argentina)

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