Conservative ecological and evolutionary patterns in liverwort–fungal symbioses

Bidartondo, Martin I.; Duckett, Jeffrey G.

doi:10.1098/rspb.2009.1458

Cited by 74 publications

(58 citation statements)

References 38 publications

(64 reference statements)

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“…examined to date with the exception of A. pellioides (Horik.) and A. pinguis from California (Bidartondo & Duckett 2010), the sister genus Riccardia Gray is almost fungus-free. In three Riccardia taxa, all New Zealand endemics, where an endophyte is present the associations appear distinctively different from those in Aneura.…”

Section: Ascomycetes In the Jungermanniopsidamentioning

confidence: 99%

“…(Bidartondo et al 2003;Kottke et al 2003) indicate that the aneuracean associations are of recent origin. Much more extensive sequencing investigations (Bidartondo & Duckett 2010;Preußing et al 2010), embracing over one hundred collections of the Aneuraceae, revealed that whilst in the vast majority the fungus is Tulasnella, two gatherings (from Chile and Switzerland) contained Sebacina Tul., the basidiomycete genus characteristic of leafy liverworts (Kottke et al 2003). The molecular diversity discovered within the Tulasnella symbionts (Bidartondo & Duckett 2010;Preußing et al 2010), plus the rare occurrence of sebacinoids, in seemingly closely allied aneuracean taxa was at first sight most surprising.…”

Section: Ascomycetes In the Jungermanniopsidamentioning

confidence: 99%

“…Much more extensive sequencing investigations (Bidartondo & Duckett 2010;Preußing et al 2010), embracing over one hundred collections of the Aneuraceae, revealed that whilst in the vast majority the fungus is Tulasnella, two gatherings (from Chile and Switzerland) contained Sebacina Tul., the basidiomycete genus characteristic of leafy liverworts (Kottke et al 2003). The molecular diversity discovered within the Tulasnella symbionts (Bidartondo & Duckett 2010;Preußing et al 2010), plus the rare occurrence of sebacinoids, in seemingly closely allied aneuracean taxa was at first sight most surprising. However recent molecular studies on the liverworts (Wackowiak et al 2007;Baczkiewicz et al 2008;Wickett & Goffinet 2008) have revealed that conservative thallus morphology within the Aneuraceae conceals remarkable genetic diversity.…”

Section: Ascomycetes In the Jungermanniopsidamentioning

confidence: 99%

“…Electron microscopy and molecular studies (Read et al 2000;Kottke et al 2003;Kottke & Nebel 2005;Nebel et al 2004;Duckett et al 2006b;Bidartondo & Duckett 2010;Newsham & Bridge 2010) have shown that eight or nine leafy liverwort genera; Barbilophozia Loeske, Diplophyllum (Dumort.) Dumort., Lophozia (Dumort.)…”

Section: B) Jungermannialesmentioning

confidence: 99%

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Fungal symbioses in bryophytes: New insights in the Twenty First Century

Pressel¹,

Bidartondo²,

Ligrone³

et al. 2014

Phytotaxa

114

126

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Fungal symbioses are one of the key attributes of land plants. The twenty first century has witnessed the increasing use of molecular data complemented by cytological studies in understanding the nature of bryophyte-fungal associations and unravelling the early evolution of fungal symbioses at the foot of the land plant tree. Isolation and resynthesis experiments have shed considerable light on host ranges and very recently have produced an incisive insight into functional relationships. Fungi with distinctive cytology embracing short-lived intracellular fungal lumps, intercellular hyphae and thick-walled spores in Treubia and Haplomitrium are currently being identified as belonging to a more ancient group of fungi than the glomeromycetes, previously assumed to be the most primitive fungi forming symbioses with land plants. Glomeromycetes, like those in lower tracheophytes, are widespread in complex and simple thalloid liverworts. Limited molecular identification of these as belonging to the derived clade Glomus Group A has led to the suggestion of host swapping from tracheophytes. Ascomycetes, all identified to date as Rhizoscyphus ericae and having an extremely wide host range extending into the Ericales, occur in the rhizoids of a range of leafy liverwort families that are sister to the Schistochilaceae, where the fungus induces rhizoid branching and septation. Dating of the Schistochilaceae suggests that these liverwort rhizoid associations predated ericoid mycorrhizas. A more restricted distribution of basidiomycetes, all identified as members of the genus Sebacina, is interpreted as a secondary acquisition in leafy liverworts following the loss of ascomycetes. Unlike the latter and ectomycorrhizal basidiomycetes in tracheophytes, these are host specific. Whereas there is no evidence of host digestion for either the ascomycetes or basidiomycetes in leafy liverworts, basidiomycetes in the Aneuraceae display regular colonization and digestion cycles. Considerable molecular diversity in the aneuracean fungi, mainly in the genus Tulasnella with occasional sebacinoids, mirrors the same in the host liverworts. Nesting of the only mycoheterotrophic liverwort Cryptothallus within Aneura is congruent with the phylogeny of the endophytes. Glomeromycete fungi have been identified in Phaeoceros and Anthoceros whereas Dendroceros, Megaceros and Nothoceros lack endophytes but the distribution of fungi across hornworts has yet to be explored. In contrast to liverworts and hornworts, there is no evidence of mycorrhiza-like associations in mosses. Claims that the fossil Prototaxites was a fossil fungus-associated liverwort are discounted.

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Section: Ascomycetes In the Jungermanniopsidamentioning

confidence: 99%

Section: Ascomycetes In the Jungermanniopsidamentioning

confidence: 99%

Section: Ascomycetes In the Jungermanniopsidamentioning

confidence: 99%

Section: B) Jungermannialesmentioning

confidence: 99%

See 2 more Smart Citations

Fungal symbioses in bryophytes: New insights in the Twenty First Century

Pressel¹,

Bidartondo²,

Ligrone³

et al. 2014

Phytotaxa

114

126

View full text Add to dashboard Cite

show abstract

“…Newsham and Bridge (2010) found that Sebacinales associates of the leafy liverwort Lophozia excisa in the southern maritime Antarctic represent the sister group of sebacinalean mycobionts of European Lophozia and Calypogeia species. Basidiomycetous mycobionts of 30 liverwort species from worldwide locations were analyzed by Bidartondo and Duckett (2010). Species of Barbilophozia, Calypogeia, Diplophyllum, Lophozia, Nardia, Sarcogyna, Scapania, Southbya, and Tritomaria, members of the Jungermanniales, were associated with taxa of the S. vermifera complex.…”

Section: Mycorrhizal Network and Species Richness Of Sebacinales Inmentioning

confidence: 99%

Enigmatic Sebacinales

Oberwinkler¹,

Riess²,

Bauer³

et al. 2013

Mycol Progress

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A historical retrospect and a taxonomic update will deal with Sebacina s.l. and s.str., Craterocolla, Efibulobasidium, Serendipita, Trem ell odendron, Trem ell oscypha, Tremellostereum, and Piriformospora, the Sebacinaceae, and the Sebacinales. Phylogenetic hypotheses for the order and subordinal taxa are discussed, including environmental sequence taxa. The cryptic biodiversity in Sebacinales is extensive but mostly unresolved with respect to the species involved.

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