Chinia gen. nov.—the second diatom genus simonsenioid raphe from mangroves in Fujian, China

2021 ◽  
Author(s):  
Huina Lin ◽  
Weiwei Wu ◽  
Lin Sun ◽  
Andrzej Witkowski ◽  
Xiaoye Li ◽  
...  
Keyword(s):  
Diatom Genus

A study of the diatom genus Pinnularia in Iowa

1980 ◽  
Author(s):  
David Charles Jackson
Keyword(s):  
Diatom Genus

Motility in the Diatom Genus Eunotia Ehrenb.

2021 ◽  
pp. 185-209
Author(s):  
Paula C. Furey
Keyword(s):  
Diatom Genus

Cymatosirella Dąbek, Witkowski & Sabbe gen. nov., a new marine benthic diatom genus (Bacillariophyta) belonging to the family Cymatosiraceae

Phytotaxa ◽  
2014 ◽  
Vol 183 (2) ◽  
pp. 120
Author(s):  
PRZEMYSŁAW DĄBEK ◽  
KOEN SABBE ◽  
ANDRZEJ WITKOWSKI ◽  
COLIN ARCHIBALD ◽  
KRZYSZOF J. KURZYDŁOWSKI ◽  
...  
Keyword(s):  
New Genus ◽  
Light And Electron Microscopy ◽  
Benthic Diatom ◽  
Western Cape ◽  
Western Cape Province ◽  
Line Drawings ◽  
The Family ◽  
Diatom Genus ◽  
Electron Microscopical ◽  
First Time

We present a new marine benthic diatom genus Cymatosirella gen. nov. The genus belongs to the family Cymatosiraceae and has been assigned to the subfamily Extubocelluloideae on the basis of ultrastructural cell wall features. It has isovalvate cells with undulate valves and is characterized by the absence of tubular processes and the occurrence of hollow spines which are observed for the first time in the Cymatosiraceae. The new genus contains four species, two of which are transferred from the genus Cymatosira, viz. Cymatosirella capensis comb. nov. and Cymatosirella minutissima comb. nov., and two which are new to science, viz. Cymatosirella benguelensis sp. nov. and Cymatosirella taylorii sp. nov. Cymatosirella capensis is chosen as the generitype. The new genus includes a group of very small taxa inhabiting the intertidal zone of the Atlantic Ocean with three species in South Africa and one in Europe. C. capensis was originally described by Giffen from Langebaan Lagoon (a shallow marine inlet in the southern part of Saldanha Bay, Western Cape Province), on the basis of light microscopy only, and has to date only been illustrated by line drawings. C. minutissima, so far only known from the Westerschelde estuary (The Netherlands), has previously been documented in more detail using both light and electron microscopy. Here, we present the results of detailed light and electron microscopical investigations of C. capensis, both from its original type material and from recently collected samples from the type locality and neighboring littoral areas in the Western Cape Province, and of the new species C. benguelensis and C. taylorii, also from Western Cape localities. All species are compared with similar small taxa belonging to the Cymatosiraceae, subfamily Extubocelluloideae.

scholarly journals C<sub>5</sub> glycolipids of heterocystous cyanobacteria track symbiont abundance in the diatom <i>Hemiaulus hauckii</i> across the tropical North Atlantic

2018 ◽  
Vol 15 (4) ◽  
pp. 1229-1241 ◽  
Author(s):  
Nicole J. Bale ◽  
Tracy A. Villareal ◽  
Ellen C. Hopmans ◽  
Corina P. D. Brussaard ◽  
Marc Besseling ◽  
...  
Keyword(s):  
North Atlantic ◽  
Surface Sediment ◽  
Low Oxygen ◽  
Heterocystous Cyanobacteria ◽  
Plume Region ◽  
Suspended Particulate ◽  
Tropical North Atlantic ◽  
Diatom Genus ◽  
Extensive Surface ◽  
Long Chain

Abstract. Diatom–diazotroph associations (DDAs) include marine heterocystous cyanobacteria found as exosymbionts and endosymbionts in multiple diatom species. Heterocysts are the site of N2 fixation and have thickened cell walls containing unique heterocyst glycolipids which maintain a low oxygen environment within the heterocyst. The endosymbiotic cyanobacterium Richelia intracellularis found in species of the diatom genus Hemiaulus and Rhizosolenia makes heterocyst glycolipids (HGs) which are composed of C30 and C32 diols and triols with pentose (C5) moieties that are distinct from limnetic cyanobacterial HGs with predominantly hexose (C6) moieties. Here we applied a method for analysis of intact polar lipids to the study of HGs in suspended particulate matter (SPM) and surface sediment from across the tropical North Atlantic. The study focused on the Amazon plume region, where DDAs are documented to form extensive surface blooms, in order to examine the utility of C5 HGs as markers for DDAs as well as their transportation to underlying sediments. C30 and C32 triols with C5 pentose moieties were detected in both marine SPM and surface sediments. We found a significant correlation between the water column concentration of these long-chain C5 HGs and DDA symbiont counts. In particular, the concentrations of both the C5 HGs (1-(O-ribose)-3,27,29-triacontanetriol (C5 HG30 triol) and 1-(O-ribose)-3,29,31-dotriacontanetriol (C5 HG32 triol)) in SPM exhibited a significant correlation with the number of Hemiaulus hauckii symbionts. This result strengthens the idea that long-chain C5 HGs can be applied as biomarkers for marine endosymbiotic heterocystous cyanobacteria. The presence of the same C5 HGs in surface sediment provides evidence that they are effectively transported to the sediment and hence have potential as biomarkers for studies of the contribution of DDAs to the paleo-marine N cycle.

Four new species from the diatom genus Kobayasiella Lange-Bertalot from waterbodies of Southeast Asia

2020 ◽  
Vol 35 (4) ◽  
pp. 363-376
Author(s):  
Anton Glushchenko ◽  
John Patrick Kociolek ◽  
Irina Kuznetsova ◽  
Maxim Kulikovskiy
Keyword(s):  
New Species ◽  
Southeast Asia ◽  
Diatom Genus

The diatom genus Pseudo-nitzschia (Bacillariophyceae) in New South Wales, Australia: morphotaxonomy, molecular phylogeny, toxicity, and distribution

2013 ◽  
Vol 49 (4) ◽  
pp. 765-785 ◽  
Author(s):  
Penelope Ajani ◽  
Shauna Murray ◽  
Gustaaf Hallegraeff ◽  
Nina Lundholm ◽  
Michael Gillings ◽  
...  
Keyword(s):  
Molecular Phylogeny ◽  
New South ◽  
New South Wales ◽  
South Wales ◽  
Diatom Genus
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