Phylogenetic relationships in Interfilum and Klebsormidium (Klebsormidiophyceae, Streptophyta)

Rindi, Fabio; Mikhailyuk, Tatiana; Sluiman, Hans J.; Friedl, Thomas; Lopez-Bautista, Juan

doi:10.1016/j.ympev.2010.11.030

Cited by 83 publications

(195 citation statements)

References 51 publications

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“…Although a unique rbcL gene sequence does not necessarily represent a separate species (Rindi et al, 2011), several recent studies have demonstrated that variability of the rbcL gene of Trebouxiophyceae generally corresponds well to the variation of the 18S rDNA sequences, and even slight differences among sequences usually correlate with relatively well-supported lineages (Novis &Visnovsky, 2012;Neustupa et al, 2013a, b). Therefore, it is likely that several of the corticolous OTUs represent previously undescribed species or genera of various known lineages, or species without any published sequence data for this marker.…”

Section: Discussionmentioning

confidence: 99%

“…Cort10, identified morphologically as Klebsormidium sp., clustered into subclade 2 of clade E2 within the broadly defined genus Klebsormidium, as demonstrated by Rindi et al (2011) and Škaloud & Rindi (2013). Members of this lineage characteristically occur on various natural substrates in subaerial conditions.…”

Section: Taxonomic Compositionmentioning

confidence: 96%

“…Several relatively well-defined green algal phylogenetic lineages frequently occur in subaerial habitats, such as Trentepohliales (Printz, 1939), Trebouxiales (Škaloud & Peksa, 2010), Klebsormidiales (Rindi et al, 2011), Prasiolales (Rindi et al, 2007), and Coccomyxaceae (Ettl & Gärtner, 1995). A number of new taxa of chlorelloid green microalgae, isolated from various corticolous biofilms, were recently described taxonomically and defined by molecular phylogenetic methods (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Molecular diversity of green corticolous microalgae from two sub-Mediterranean European localities

Kulichová

Škaloud

Neustupa

2014

European Journal of Phycology

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Green algae in corticolous biofilms are simple coccoid cells or filamentous thalli with strikingly low morphological diversity. Consequently, microscopic identification of these organisms is difficult, and often possible only to higher taxonomic units. We investigated the taxonomic and phylogenetic composition of green microalgae isolated from biofilms growing on the bark of Quercus pubescens and Pinus nigra. The study was based on 122 partial sequences of the plastid-encoded rbcL gene. In total, 29 operational taxonomic units (OTUs), differing in their rbcL sequences, were encountered. Members of the Trebouxiophyceae formed 97.5% of the isolates; Streptophyta made up 2.5%. The most frequently occurring OTUs were in the genera Coccomyxa, Parachloroidium and Stichococcus. Within the Watanabea clade, we have probably discovered an as-yet undescribed generic lineage with chlorelloid morphology. OTUs belonging to the recently described trebouxiophycean genera Kalinella, Leptochlorella and Xylochloris were also encountered, which indicates that these genera are probably widely distributed in subaerial microhabitats, such as tree bark. The samples taken from oak trees were more diverse in their OTU composition than those taken from pine trees, but the average phylogenetic distances of OTUs in samples did not differ between the host tree taxa. Host tree species had a stronger effect on the community structure of algae than the sampling locality. This indicates that habitat filtering is important for the distribution of individual microalgal phylogenetic taxa.

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Section: Discussionmentioning

confidence: 99%

Section: Taxonomic Compositionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Molecular diversity of green corticolous microalgae from two sub-Mediterranean European localities

Kulichová

Škaloud

Neustupa

2014

European Journal of Phycology

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“…), the plates were examined. The algal microcolonies were morphologically identified under an Olympus BX 31 microscope at a magnification of ×400-1000, at the lowest taxonomic level that could be unambiguously distinguished using relevant references (e.g., ettl & GärTNer 1995;komárek & aNaGNosTidis 2005;mikhailyuK et al 2008;riNdi et al 2011). In some cases, tentative identification at the species level was possible, but many taxa were identified as genera, or tentatively named morphotypes, which were used as individual operational taxonomic units (OTUs).…”

Section: Methodsmentioning

confidence: 99%

Community structure of corticolous microalgae within a single forest stand: evaluating the effects of bark surface pH and tree species

Štifterová¹,

Neustupa²

2015

Fottea

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Community structure of corticolous macro-epiphytes, such as lichens and mosses, usually strongly correlates with bark characteristics related to the taxonomic identity of the host tree. However, the reasons for the occurrence of similar patterns of microalgal corticolous biofilms are unclear and have rarely been investigated. In this study, we surveyed aerial phototrophic biofilms growing on the bark of Acer, Alnus, Fagus, Fraxinus and Picea trees in a single stand of a temperate forest. A flathead electrode was used to measure and evaluate the effect of bark surface pH on microalgal species richness and composition. In total, 47 distinct morphotypes were found, chiefly consisting of various coccoid green algae belonging to Trebouxiophyceae and Chlorophyceae. In addition, members of the Bacillariophyceae, Eustigmatophyceae, Streptophyta, Trentepohliales, Xanthophyceae and Cyanobacteria were also found. Bark pH and species richness of the samples were positively correlated; in the most acidic samples (from Picea and Alnus trees), only green algae occured. Aerial diatoms, Cyanobacteria, Xanthophyceae and Trentepohlia sp. were only found in the more basic samples. The species composition was significantly structured by the separated effects of host tree species, the bark pH and the sampling season. The observed non-random differences in community structure of the biofilms among host tree species indicated possible effects of deterministic processes, such as species sorting of microalgae along the environmental gradients.

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“…And still, in times of molecular identification, the debate on species definition in the genus Klebsormidium is ongoing (Mikhailyuk et al, 2015;. Therefore, the definition of clades within Klebsormidium was and still is a helpful tool to differentiate between morpho-or geno-types (Rindi et al, 2011). Studies comparing these Klebsormidium clades from different localities observed global ubiquity on the one hand, and local endemism on the other .…”

Section: Species Composition and Abundancementioning

confidence: 99%

Algal richness in BSCs in forests under different management intensity with some implications for P cycling

et al. 2018

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Abstract. Biological soil crusts (BSCs) are highly important communities in drylands and disturbed areas worldwide, where the higher vegetation is sparse, with a diverse microalgal community as the key component. They perform important ecological functions, such as stabilization of soil and nutrient enrichment. In temperate regions BSCs are also common, but generally less studied. Changes in land use and land use intensity strongly influence biodiversity per se and ecosystem processes, as can be seen particularly in densely populated regions like Europe. However, systematic studies on the effect of land use gradients, i.e., forest management intensity, on BSCs have been missing up to now. To close this knowledge gap and enhance the understanding of management effects on BSCs from pine and beech forests under different management regimes, key primary producers of these communities (eukaryotic microalgae and cyanobacteria) were studied. Phototrophic microorganisms were identified morphologically and categorized as either coccal taxa, which typically occur in high diversity, or filamentous taxa, which have the potential to initiate BSC formation. In total, 51 algal species were recorded, most of them from the phylum Chlorophyta, followed by Streptophyta and Stramenopiles, and only 1 cyanobacterial taxon. The most abundant crust-initiating filamentous algae were three species of Klebsormidium (Streptophyta), a ubiquitous genus regularly occurring in BSCs because of its broad ecophysiological tolerance. Increasing management intensity in the forests resulted in a higher number of algal species; especially the number of coccal taxa increased. Furthermore, the proportion of inorganic phosphorus showed tendencies towards a negative correlation with the number of algal species. Thus, management of forests has an impact on the diversity of phototrophic organisms in BSCs, which might in turn affect their biogeochemical P cycling.

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Phylogenetic relationships in Interfilum and Klebsormidium (Klebsormidiophyceae, Streptophyta)

Cited by 83 publications

References 51 publications

Molecular diversity of green corticolous microalgae from two sub-Mediterranean European localities

Molecular diversity of green corticolous microalgae from two sub-Mediterranean European localities

Community structure of corticolous microalgae within a single forest stand: evaluating the effects of bark surface pH and tree species

Algal richness in BSCs in forests under different management intensity with some implications for P cycling

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