Does water availability influence the abundance of species of the Phialocephala fortinii s.l. – Acephala applanata complex (PAC) in roots of pubescent oak (Quercus pubescens) and Scots pine (Pinus sylvestris)?

Landolt, Maurus; Stroheker, Sophie; Queloz, Valentin; Gall, Anja; Sieber, Thomas N.

doi:10.1016/j.funeco.2019.100904

Cited by 16 publications

(10 citation statements)

References 58 publications

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“…P. subalpina is likely the most common PAC species in the world. Interestingly, it was found only once on maple in this study, and also very rarely in the study of Landolt et al [34]. Some patterns of host preference also emerged from three undisturbed, subalpine forest sites in Switzerland, where the roots of Vaccinium spp.…”

Section: Non-dsesupporting

confidence: 52%

“…The dominant species was again P. Helvetica, with a distinct preference for Pinus sylvestris. The second most common species was P. europaea, which was more common on pine, but the difference between pine and oak root colonization was far less pronounced than that for P. helvetica [34]. Halmschlager and Kowalski [41] have demonstrated that PAC (P. fortinii s.l.)…”

Section: Non-dsementioning

confidence: 99%

“…So far, 21 morphologically indistinguishable cryptic species (CSP) have been identified, of which eight have been formally described: Phialocephala turicensis (CSP1), P. letzii (CSP2), P. europaea (CSP3), P. helvetica (CSP4), P. uotilensis (CSP5), P. subalpina (CSP6), P. fortinii s.s., and Acephala applanata [14,[30][31][32][33]. There is evidence of the discovery of a 22nd CSP found in the Pfynwald-a forest in Switzerland dominated by Scots pine (Pinus sylvestris) [34]. PAC communities are highly diverse and the factors governing community assembly remain unknown [28,[35][36][37], as do their modes of reproduction and dispersal.…”

Section: Introductionmentioning

confidence: 99%

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Investigating Host Preference of Root Endophytes of Three European Tree Species, with a Focus on Members of the Phialocephala fortinii—Acephala applanata Species Complex (PAC)

Stroheker

Dubach

Vögtli

et al. 2021

JoF

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Host preference of root endophytes of the three European tree species of Norway spruce (Picea abies), common ash (Fraxinus excelsior), and sycamore maple (Acer pseudoplatanus) were investigated in two forest stands near Zurich, Switzerland. The focus was placed on members of the Phialocephala fortinii s.l. (sensu lato)—Acephala applanata species complex (PAC), as well as other dark septate endopyhtes (DSE). PAC species were identified based on 13 microsatellite loci. Eleven PAC species were found, with Phialocephala helvetica, P. europaea being the most frequent. All but cryptic species 12 (CSP12) preferred Norway spruce as a host. Though very rare in general, CSP12 was most frequently isolated from maple roots. Regarding the abundant PAC species, P. helvetica and P. europaea, the preference of spruce as a host was least pronounced in P. europaea, as it was also often isolated from ash and maple. It is the first record of PAC found on common ash (Fraxinus excelsior). Cadophora orchidicola, a close relative of PAC, has frequently been isolated from ash. Various species of the Nectriaceae (Cylindrocarpon spp.) have often been isolated, particularly from maple roots. By comparison, Pezicula spp. (Cryptosporiopsis spp.) was found to be abundant on all three hosts. Phomopsis phaseoli exhibits a clear preference for spruce.

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Section: Non-dsesupporting

confidence: 52%

Section: Non-dsementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigating Host Preference of Root Endophytes of Three European Tree Species, with a Focus on Members of the Phialocephala fortinii—Acephala applanata Species Complex (PAC)

Stroheker

Dubach

Vögtli

et al. 2021

JoF

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“…)– Acephala applanata species complex (PAC), which contains at least 22 cryptic species, eight of which have been formally described ( Stroheker et al. 2018 , Landolt et al. 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Mollisiaceae: An overlooked lineage of diverse endophytes

Tanney

Seifert

2020

Studies in Mycology

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Mollisia is a taxonomically neglected discomycete genus ( Helotiales, Leotiomycetes ) of commonly encountered saprotrophs on decaying plant tissues throughout temperate regions. The combination of indistinct morphological characters, more than 700 names in the literature, and lack of reference DNA sequences presents a major challenge when working with Mollisia . Unidentified endophytes, including strains that produced antifungal or antiinsectan secondary metabolites, were isolated from conifer needles in New Brunswick and placed with uncertainty in Phialocephala and Mollisia , necessitating a more comprehensive treatment of these genera. In this study, morphology and multigene phylogenetic analyses were used to explore the taxonomy of Mollisiaceae , including Mollisia , Phialocephala , and related genera, using new field collections, herbarium specimens, and accessioned cultures and sequences. The phylogeny of Mollisiaceae was reconstructed and compared using the nuc internal transcribed spacer rDNA (ITS) barcode and partial sequences of the 28S nuc rDNA (LSU) gene, largest subunit of RNA polymerase II ( RPB1 ), DNA topoisomerase I ( TOP1 ), and the hypothetical protein Lipin/Ned1/Smp2 ( LNS2 ). The results show that endophytism is common throughout the Mollisiaceae lineage in a diverse range of hosts but is infrequently attributed to Mollisia because of a paucity of reference sequences. Generic boundaries within Mollisiaceae are poorly resolved and based on phylogenetic evidence the family included species placed in Acephala , Acidomelania , Barrenia , Bispora , Cheirospora , Cystodendron , Fuscosclera , Hysteronaevia, Loramyces, Mollisia, Neopyrenopeziza , Obtectodiscus, Ombrophila, Patellariopsis , Phialocephala , Pulvinata , Tapesia (= Mollisia ), and Trimmatostroma. Taxonomic novelties included the description of five novel Mollisia species and five novel Phialocephala species and the synonymy of Fuscosclera with Phialocephala , Acidomelania with Mollisia , and Loramycetaceae with Mollisiaceae .

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“…Root endophytic fungi, unlike mycorrhizal fungi, colonize all parts of the internal root system, which means that their biomass is even higher than that of mycorrhizal fungi (Grünig et al 2006(Grünig et al , 2011Bartnik 2013). However, because they can improve the nutrient status and water balance of the host plant (Likar 2018), their role in plant development is no less important than that of mycorrhizal fungi (Hilszczańska 2016;Stroheker et al 2018;Khullar and Reddy 2019;Rana et al 2019;Landolt et al 2020).…”

Section: Endophytes and Droughtmentioning

confidence: 99%

Drought in the forest breaks plant–fungi interactions

et al. 2021

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Drought in the forest is not only a prolonged state of water shortage, but also an occasion where interactions between plants and fungi are affected. Water efficiency accelerates a range of pathologies in interactions between organisms, influencing the ecosystems and their interacting biological components. This study focuses on the role of mycorrhizal and endophyte fungi in alleviating the effects of soil water shortage, and on the impact of their altered activity during drought on the health of trees. The issues presented here show the fundamental role of the mycorrhizal mycelium and the mechanism of water transport to the plant in the course of other phenomena (withering, pathogenesis, endophytes biology) that occur in trees under influence of drought, with particular attention on managed coniferous stands. Conclusions resulting from published information on this topic emphasize the negative impact of soil moisture deficiency on the ectomycorrhizal fungi functioning and, in contrast, on the promotion of the growth of some endophytes, pathogens and hemi-parasitic mistletoes (Viscum spp.).

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Does water availability influence the abundance of species of the Phialocephala fortinii s.l. – Acephala applanata complex (PAC) in roots of pubescent oak (Quercus pubescens) and Scots pine (Pinus sylvestris)?

Cited by 16 publications

References 58 publications

Investigating Host Preference of Root Endophytes of Three European Tree Species, with a Focus on Members of the Phialocephala fortinii—Acephala applanata Species Complex (PAC)

Investigating Host Preference of Root Endophytes of Three European Tree Species, with a Focus on Members of the Phialocephala fortinii—Acephala applanata Species Complex (PAC)

Mollisiaceae: An overlooked lineage of diverse endophytes

Drought in the forest breaks plant–fungi interactions

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