We report the species composition of subaerial epixylic algae and cyanobacteria from a South-East Asian mountain rainforest locality in Cibodas, West Java. Green (Trebouxiophyceae, Chlorophyceae, Trentepohliales) were dominant Cyanobacteria second most frequent group. specifically concentrated on comparison closed primary forest open antropogenic spaces. Trentepohliales dominated spaces with higher light intensities, whereas localities by trebouxiophycean coccal green algae. There was...

Neustupa J., Eliáš M., Škaloud P., Němcová Y. and Šejnohová L. 2011. Xylochloris irregularis gen. et sp. nov. (Trebouxiophyceae, Chlorophyta), a novel subaerial coccoid green alga. Phycologia 50: 57–66. DOI: 10.2216/08-64.1The phylogenetic diversity of algae remains still poorly explored. We characterised in detail two unicellular found on tropical trees Singapore. Light microscopy revealed morphological identity these strains. Depending the age cultures, cells were spherical to cylindrical,...

Background and aims -Knowledge on diversity distribution of algae cyanobacteria in subaerial habitats still lags behind those freshwater marine environments.Notably, data microalgae tropical corticolous are scarce.We investigated species composition epixylic from two Singaporean rainforest localities.We asked whether there differences alpha-diversity samples taken different areas habitat types (bark vs. decaying bare wood).In addition, we turnover (beta-diversity) among areas.Methods -The...

Unicellular green algae of the genus Micrasterias (Desmidiales) have complex cells with multiple lobes and indentations, therefore, they are considered model organisms for research on plant cell morphogenesis variation. a typical biradial symmetric arrangement terminal lobules. They composed two semicells that can be further differentiated into three structural components: polar lobe lateral lobes. Experimental studies suggested these cellular parts specific evolutionary patterns develop...

SUMMARY The traditional green algal genus Chlorella , which comprised coccoid algae surrounded by a smooth cell wall and reproducing solely autosporulation, has proved to be polyphyletic extremely diverse in phylogenetic terms. We studied new subaerial ‐like strain CAUP H7901 morphological, ultrastructural, molecular investigations indicated that it represents lineage of the trebouxiophycean Watanabea clade, dissimilar from other members this group. alga globular cells with single parietal...

The algal flora of subaerial habitats in the tropics remains largely unexplored, despite fact that it potentially encompasses a wealth new evolutionary diversity. Here we present detailed morphological and molecular characterization an autosporic coccoid green alga isolated from decaying wood natural forest Singapore. Depending on culture conditions, this formed globular to irregularly oval solitary cells. Autosporulation was only mode reproduction observed. cell periphery filled with...

The diversity of eukaryotic microorganisms is far from fully described, as indicated by the vast number unassigned genotypes retrieved environmental sequencing or metagenomics. We isolated several strains unicellular green algae algal biofilms growing on tree bark in a Southeast Asian tropical rainforest and determined them to be relatives an unidentified lineage 18S rDNA sequences, thus uncovering its cellular identity. Light, confocal, electron microscope observations rRNA gene revealed...

The diversity of green microalgae in subaerial habitats remains largely unexplored and a number new genus- species-level lineages have been discovered recently. traditional algal genus, Chlorella, which accommodated coccoid unicellular species with globular to oval cells, reproducing entirely by autospores, has found be polyphyletic. In this study, we provide detailed characterization two strains isolated from tree bark the Mediterranean. These algae share general Chlorella-like morphology...

Abstract: A biodiversity hotspot is a biogeographic region that signifi cant reservoir of species diversity. In free-living protists, the ratio local to global diversity may help identify hotspots within certain taxonomic groups. this study, we concentrated on silica-scaled chrysophytes lakes and wetland habitats Aquitaine, south-western France. With fi fty-eight identifi ed taxa Aquitaine represents one world Synurales. Moreover, several rare and/or endemic were recorded in region. We...

Neustupa J., Němcová Y., Veselá Steinová J. and Škaloud P. 2013. Parachloroidium gen. nov. (Trebouxiophyceae, Chlorophyta), a novel genus of coccoid green algae from subaerial corticolous biofilms. Phycologia 52: 411–421. DOI: 10.2216/13–142.1The Watanabea clade the Trebouxiophyceae included mostly unicellular microalgae that thrived in various terrestrial microhabitats. The diversity these morphologically uniform was little known, several new genus-level lineages had recently been described...

AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 51:77-86 (2008) - DOI: https://doi.org/10.3354/ame01184 Temperature-related phenotypic plasticity in green microalga Micrasterias rotata Jirí Neustupa*, Jan St'astny, Ladislav Hodac Department of Botany, Charles University Prague, Benatska 2, Prague 128 01, Czech Republic *Email: neustupa@natur.cuni.cz ABSTRACT:...

Algal cells show many types of complex symmetry. For instance, Micrasterias rotata are symmetric relative to two perpendicular axes Due the mode cell division cells, symmetry can be interpreted as a left-right axis and juvenile-adult axis. Here, we analyze allometry in cells. We apply new general approach for shape analysis structures with any type Our method separate component variation among individuals from one or more components asymmetry, depending on sym- metry under study, thus is...

Morphological symmetry and asymmetry in three clonal populations of Micrasterias cells was decomposed using a new geometric morphometric method specifically developed for shape analysis complex symmetric structures.Micrasterias are relative to two perpendicular axes symmetry: left-right axis juvenile-adult axis.Shape variation is into component other components asymmetry.Principal suggested that were dominant describing morphological differences among objects all datasets.The leftright...

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 phylogenetic composition green microalgae isolated from growing on bark Quercus pubescens Pinus nigra. The study was based 122 partial sequences plastid-encoded rbcL gene. In total, 29 operational units (OTUs), differing...

It is now clear that whole genome duplications have occurred in all eukaryotic evolutionary lineages, and the vast majority of flowering plants experienced polyploidisation their history. However, study size variation microalgae lags behind higher seaweeds. In this study, we addressed question whether microalgal phylogeny associated with DNA content order to evaluate significance polyploidy model genus Micrasterias. We applied flow-cytometric techniques quantification mapped estimated along...

Background and aims -Subaerial phototrophic biofilms growing on tree bark represent one of the leastknown micro-algal communities.Ecological distribution patterns major groups thriving in corticolous microhabitats eleven host species sub-Mediterranean temperate European localities were investigated present study.Methods -In total, 169 samples by direct light microscopy.Microalgae identified to lowest putatively monophyletic that could be distinguished unambiguously.Among other abiotic...