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Multigene Assessment of Biodiversity of Diatom (Bacillariophyceae) Assemblages from the Littoral Zone of the Bohai and Yellow Seas in Yantai Region of Northeast China with some Remarks on Ubiquitous Taxa

Andrzej Witkowski, Chunlian Li, Izabela Zgłobicka, Shu-xian Yu, Matt Ashworth, Przemysław Dą bek, Song Qin, Cheng Tang, Marta Krzywda, Manfred Ruppel, Edward C. Theriot, Robert K. Jansen, Ana Car, Tomasz Płociński, Yin-chu Wang, Jamal S. M. Sabir, Genowefa Daniszewska-Kowalczyk, Agnieszka Kierzek and Nahid H. Hajrah
Journal of Coastal Research
Special Issue No. 74. Environmental Processes and the Natural and Anthropogenic Forcing in the Bohai Sea, Eastern Asia (SPRING 2016), pp. 166-195
Stable URL: http://www.jstor.org/stable/43843038
Page Count: 30
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Abstract

Diatoms are important contributors to the benthic microeukaryote flora. This manuscript lays the foundation for future metagenomic and environmental sequencing projects off coastal China by curating diatom DNA sequences from the Yantai region of the Bohai and Yellow Seas (Northeast China). These studies are based on cultures established from samples collected in different seasons from marine littoral and supralittoral zones in 2013 and 2014. Thirty-six diatom strains were cultured successfully and identification of these clones was determined by light and scanning electron microscopy(LM and SEM) and DNA sequencing of the nuclear-encoded small subunit ribosomal RNA (SSU) and chloroplast-encoded rbcL and psbC genes. The strains primarily represent raphid pennate genera, such as Amphora, Amphora (Oxyamphora), Caloneis, Diploneis, Halamphora, Navicula, Nitzschia, Parlibellus, Pleurosigma, Surirella and Tryblionella. When the DNA markers from these strains were analysed in a multi-gene phylogeny, we found that some clones-particularly within the genera Amphora, Navicula and Nitzschia—show greater than expected genetic diversity despite their very similar morphology and morphometrics. We also compared the molecular and morphological identities of several seemingly ubiquitous marine littoral taxa in the genera Amphora and Nitzschia from the Indian Ocean and Atlantic Ocean, the Red Sea and Adriatic Sea to their Yellow Sea counterparts.

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