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12 Results Found

  • Article
  • Open Access
249 Views
25 Pages

Ulnaria williamsii sp. nov. (Bacillariophyta, Ulnariaceae) from Mongolia and Its Reproductive Features Relevant for Species Dispersal and Evolution

  • Anton Glushchenko,
  • Yulia Podunay,
  • Andrei Mironov,
  • Elena Kezlya,
  • Nickolai Davidovich,
  • Soninkhishig Nergui,
  • Yevhen Maltsev and
  • Maxim Kulikovskiy

1 November 2025

An unknown species of the diatom genus Ulnaria was identified during the study of freshwater environments in Mongolia. Monoclonal strains of the unknown species were obtained and subjected to molecular analysis. The strains were investigated through...

  • Article
  • Open Access
11 Citations
3,790 Views
26 Pages

Delimitation of Some Taxa of Ulnaria and Fragilaria (Bacillariophyceae) Based on Genetic, Morphological Data and Mating Compatibility

  • Yulia Zakharova,
  • Artyom Marchenkov,
  • Darya Petrova,
  • Yurij Bukin,
  • Aleksey Morozov,
  • Yekaterina Bedoshvili,
  • Yulia Podunay,
  • Olga Davidovich,
  • Nikolai Davidovich and
  • Alexander Bondar
  • + 2 authors

13 February 2023

Fragilaria and Ulnaria are two closely related diatom genera for which the delimitation and circumscription of several species is unclear. We studied strains isolated from Lake Baikal and compared them with the species from freshwater reservoirs in E...

  • Article
  • Open Access
11 Citations
3,158 Views
14 Pages

Impact of Algicidal Bacillus mycoides on Diatom Ulnaria acus from Lake Baikal

  • Yekaterina Bedoshvili,
  • Elvira Bayramova,
  • Nikolay Sudakov,
  • Igor Klimenkov,
  • Maria Kurilkina,
  • Yelena Likhoshway and
  • Yulia Zakharova

27 September 2021

Algae–bacteria interactions play an important role in water ecosystems. In this work, the BS2-15 algicidal strain was isolated from the bottom sediments of Lake Baikal and identified as Bacillus mycoides on the basis of 16S rDNA sequencing, its descr...

  • Article
  • Open Access
2 Citations
2,365 Views
21 Pages

Differential Expression of Stress Adaptation Genes in a Diatom Ulnaria acus under Different Culture Conditions

  • Elvira Bayramova,
  • Darya Petrova,
  • Artyom Marchenkov,
  • Alexey Morozov,
  • Yuri Galachyants,
  • Yulia Zakharova,
  • Yekaterina Bedoshvili and
  • Yelena Likhoshway

15 February 2024

Diatoms are a group of unicellular eukaryotes that are essential primary producers in aquatic ecosystems. The dynamic nature of their habitat necessitates a quick and specific response to various stresses. However, the molecular mechanisms of their p...

  • Article
  • Open Access
3 Citations
2,605 Views
10 Pages

15 February 2023

Two diatom species, Ulnaria acus and Fragilaria radians, are morphologically very similar and often coexist, which makes it difficult to compare their abundances. However, they are easily separated by molecular data; thus, in this work, we attempted...

  • Article
  • Open Access
19 Citations
3,152 Views
13 Pages

29 January 2021

The relationship between the diatom taxa preserved in surface lake sediments and environmental variables in Dongping Lake was explored using multivariate statistical methods. The statistical analysis showed that the lake was eutrophicated in all seas...

  • Article
  • Open Access
6 Citations
2,197 Views
16 Pages

Temporal and Seasonal Variations in a Phytoplankton Community Structure in Artificial Lake Uiam, South Korea

  • Jong-Kwon Im,
  • Youn-Bo Sim,
  • Soon-Jin Hwang,
  • Myeong-Seop Byeon and
  • Tae-Gu Kang

28 November 2023

Lake Uiam is situated midway through a basin with dams at both the upstream and downstream ends; considerable environmental fluctuations have been observed here. However, studies on changes in environmental factors and plankton community fluctuations...

  • Article
  • Open Access
4 Citations
4,029 Views
12 Pages

Strategy for the Removal of Satellite Bacteria from the Cultivated Diatom

  • Yulia Zakharova,
  • Artem Marchenkov,
  • Nadezhda Volokitina,
  • Aleksey Morozov,
  • Yelena Likhoshway and
  • Mikhail Grachev

3 October 2020

Multiple ecological and genetic studies of diatom algae require an axenic culture. However, algae-associated bacterial biofilms often form in diatom-produced mucus, both during creation of monoclonal cultures from single cells and during biomass grow...

  • Article
  • Open Access
1 Citations
1,492 Views
14 Pages

The Seasonal Environmental Factors and Phytoplankton Composition of Lake Paldang, the Largest Water Source in South Korea

  • Jong Kwon Im,
  • Youn-Bo Sim,
  • Jeong Hwan Byun,
  • Chae-Hong Park,
  • Soon-Jin Hwang and
  • Tae-Gu Kang

5 December 2024

This study aimed to determine the seasonal variations in the growth and species composition of phytoplankton in Lake Paldang, South Korea’s largest freshwater body, based on environmental factors. Weekly surface water samples were collected and...

  • Article
  • Open Access
2 Citations
2,829 Views
23 Pages

Revealing Interactions between Temperature and Salinity and Their Effects on the Growth of Freshwater Diatoms by Empirical Modelling

  • T. T. Yen Le,
  • Alina Becker,
  • Jana Kleinschmidt,
  • Ntambwe Albert Serge Mayombo,
  • Luan Farias,
  • Sára Beszteri and
  • Bánk Beszteri

22 September 2023

Salinization and warming are of increasing concern for freshwater ecosystems. Interactive effects of stressors are often studied in bifactorial, two-level experimental setups. The shape of environmental reaction norms and the position of the “c...

  • Article
  • Open Access
1 Citations
2,547 Views
15 Pages

Diatoms as an Indicator of Water Quality in the Kuils River, Western Cape, South Africa

  • Leona Kuturo,
  • Ntokozo Malaza,
  • Arnelia Natalie Paulse and
  • Philani Mpungose

6 December 2024

Rivers are crucial hydrological cycle components, supporting ecosystems and human activities. Managing and protecting river water quality is essential. Diatoms, microscopic algae, are widespread and sensitive to changes in water quality, making them...

  • Article
  • Open Access
13 Citations
6,080 Views
21 Pages

9 March 2022

Myristica swamps are one of the rarest wetland ecosystems within the sub-tropical evergreen forests of the Western Ghats, India. As their name indicates, they harbor trees belonging to the ancient family Myristicaceae. Due to the waterlogged conditio...