New records of microalgae from the New Zealand alpine zone, and their distribution and dispersal

Novis, Phil M.; Beer, Thomas De; Vallance, Jennifer

doi:10.1080/00288250809509773

Cited by 18 publications

(16 citation statements)

References 55 publications

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“…Furthermore, broad sampling of the 18S rRNA gene among various members of the class makes this marker extremely useful for identification of new, previously unknown lineages (De Wever et al, 2009;Horath & Bachofen, 2009). The rbcL gene has gradually become the standard second choice among various molecular markers in the Trebouxiophyceae and it has recently been used in several taxonomic and diversity studies (Novis et al, 2008;Thüs et al, 2011;Novis & Visnovsky, 2012), providing relatively broad sampling of individual lineages within the class. The rbcL-gene-based trebouxiophycean phylogeny generally concurred with the 18S rRNA-based tree topologies.…”

Section: Discussionmentioning

confidence: 99%

Leptochlorella corticola gen. et sp. nov. and Kalinella apyrenoidosa sp. nov.: two novel Chlorella-like green microalgae (Trebouxiophyceae, Chlorophyta) from subaerial habitats

Neustupa

Němcová

Veselá

et al. 2013

International Journal of Systematic and Evolutionary Microbiology

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The diversity of green microalgae in subaerial habitats remains largely unexplored and a number of new genus- and species-level lineages have been discovered recently. The traditional green algal genus, Chlorella, which accommodated coccoid unicellular green algal species with globular to oval cells, reproducing entirely by autospores, has been found to be polyphyletic. In this study, we provide a detailed characterization of two strains of microalgae isolated from tree bark in the Mediterranean. These algae share the general Chlorella-like morphology and their 18S rRNA and rbcL gene sequences place them in the Trebouxiophyceae. Strain CAUP H8401 forms an independent trebouxiophycean lineage, together with three previously published 18S rRNA gene environmental sequences of undescribed microalgae, which were retrieved from profoundly different habitats. In contrast, strain CAUP H7902 is related to Kalinella bambusicola in the Watanabea clade of the Trebouxiophyceae on the basis of its 18S rRNA gene sequence. This relationship is also supported by the rbcL gene sequence, acquired from the type strain of K. bambusicola. The investigated strains are described as representatives of a novel species in a new genus, Leptochlorella corticola gen. et sp. nov., and a novel species, Kalinella apyrenoidosa sp. nov., according to the International Code of Nomenclature for Algae, Fungi and Plants.

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Section: Discussionmentioning

confidence: 99%

Leptochlorella corticola gen. et sp. nov. and Kalinella apyrenoidosa sp. nov.: two novel Chlorella-like green microalgae (Trebouxiophyceae, Chlorophyta) from subaerial habitats

Neustupa

Němcová

Veselá

et al. 2013

International Journal of Systematic and Evolutionary Microbiology

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“…Along with the morphological data obtained in this study, published morphological observations were used to characterize following strains: Lokhorst KL1, Lokhorst KL37, SAG 5.96, SAG 6.96, SAG 7.96, SAG 8.96 (Lokhorst ); Novis K25, Novis K37, Novis K48, Novis KM, Novis KRIV (Novis ); and Novis LCR‐K2 (Novis et al. ). The evolution of habitat preferences was reconstructed in the program BayesTraits (Pagel and Meade ).…”

Section: Methodsmentioning

confidence: 99%

Ecological Differentiation of Cryptic Species within an Asexual Protist Morphospecies: A Case Study of Filamentous Green Alga Klebsormidium (Streptophyta)

Škaloud

Rindi

2013

J Eukaryotic Microbiology

137

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Taxa of microbial eukaryotes defined on morphological basis display a large degree of genetic diversity, implying the existence of numerous cryptic species. However, it has been postulated that genetic diversity merely mirrors accumulation of neutral mutations. As a case taxon to study cryptic diversity in protists, we used a widely distributed filamentous genus, Klebsormidium, specifically the lineage E (K. flaccidum/K. nitens complex) containing a number of morphologically similar strains. Fourteen clades were recognized in the phylogenetic analysis based on a concatenated ITS rDNA + rbcL data set of more than 70 strains. The results of inferred character evolution indicated the existence of phylogenetic signal in at least two phenotypic characters (production of hydro-repellent filaments and morphology of zoosporangia). Moreover, the lineages recovered exhibited strong ecological preferences to one of the three habitat types: natural subaerial substrata, artificial subaerial substrata, and aquatic habitats. We interpret these results as evidence of existence of a high number of cryptic species within the single morphospecies. We consider that the permanent existence of genetically and ecologically well-defined cryptic species is enabled by the mechanism of selective sweep.

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“…One species of Klebsormidiales Á K. dissectum (F.Gay) H.Ettl & G.Ga¨rtner Á was recorded from the New Zealand alpine zone previously, and was placed with lowland isolates in a clade containing all the New Zealand strains of Klebsormidium sequenced at that time (Novis et al 2008). Here, we identify and describe two further species, both of which are new records for New Zealand, and show using phylogenetic analysis that a monophyletic group of New Zealand Klebsormidiales can no longer be supported.…”

Section: Introductionmentioning

confidence: 99%

Novel alpine algae for New Zealand: Klebsormidiales

Novis

Visnovsky

2011

New Zealand Journal of Botany

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The alpine zone of Mt Philistine, Arthur's Pass National Park, is home to at least three species of algae in the Klebsormidiales. Klebsormidium dissectum was described from the site previously. A distinctive filamentous species, Klebsormidium crenulatum, has now been found that is larger than other New Zealand strains and is a new record for New Zealand. A unicellular species, Interfilum terricola, is also described as another new record for New Zealand. Phylogenetic analyses of the rbcL gene and the ITS-1-5.8S-ITS2 region show that New Zealand Klebsormidium is not monophyletic. The very close relationship between New Zealand and Belgian I. terricola illustrates the readiness with which transoceanic dispersal must occur in this genus. Our analyses of individual and concatenated genes suggest the paraphyly of the genus Klebsormidium, that the ancestral condition of the genus may have been the larger form, and that the incorporation of Klebsormidium into Interfilum is likely in the future, when more knowledge of diversity and relationships has accumulated.

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New records of microalgae from the New Zealand alpine zone, and their distribution and dispersal

Cited by 18 publications

References 55 publications

Leptochlorella corticola gen. et sp. nov. and Kalinella apyrenoidosa sp. nov.: two novel Chlorella-like green microalgae (Trebouxiophyceae, Chlorophyta) from subaerial habitats

Leptochlorella corticola gen. et sp. nov. and Kalinella apyrenoidosa sp. nov.: two novel Chlorella-like green microalgae (Trebouxiophyceae, Chlorophyta) from subaerial habitats

Ecological Differentiation of Cryptic Species within an Asexual Protist Morphospecies: A Case Study of Filamentous Green Alga Klebsormidium (Streptophyta)

Novel alpine algae for New Zealand: Klebsormidiales

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