Morphology, phylogeny, and molecular dating in Plagiogrammaceae family focused on Plagiogramma-Dimeregramma complex (Urneidophycidae, Bacillariophyceae)

Description of Navicula vanseea sp. nov. (Naviculales, Naviculaceae), a new species of diatom from the highly alkaline Lake Van (Republic of Türkiye) with complete characterisation of its organellar genomes and multigene phylogeny

“…The three gene datasets ( 18S , rbcL and psbC ) already used in previous publications ( Dąbek et al 2017 ; Li et al 2020 ; Górecka et al 2021a ;) were obtained and the corresponding genes from various Naviculaceae and N. vanseea sp. nov .…”

Indonesian coral reef habitats reveal exceptionally high species richness and biodiversity of diatom assemblages

“…Others studies showed that the presence of diatom taxa with broad tropical ranges in coral reefs of the Western Indian Ocean coasts and in the SE Pacific (Li et al 2015(Li et al , 2018). Yet Lobban et al (2012), Ashworth et al (2012), Dąbek et al (2017Dąbek et al ( , 2019, Li et al (2016Li et al ( ,2020; but see also Kryk et al, 2020) have clearly shown numerous taxa limited in their distribution to particular sites. Our analysis of the published research given above involving the use of molecular methods and identification of processed samples allowed us to distinguish three major groups of diatom taxa in terms of their biogeography: cosmopolitan species, including some adapted and also distributed in cold water areas, but rather in the Arctic and Greenland than the Southern Ocean.…”

A new marine epipsammic diatom species, Ambo dajingensis sp. nov. (Bacillariophyceae), from the coast of Southeast China

“…However, in some small diatoms, with the exception of costae, a few features resolvable with LM could cause confusion in the identification and classification of these diatoms. In nonpennates and araphid diatoms, the genera Eunotogramma (Ashworth et al 2015), Anaulus (Odebrecht et al 2014;Franco et al 2018) and Plagiogramma (Kaczmarska et al 2017;Li et al 2021) bear internal transverse costae. With the re-examination of some small species, i.e., Anaulus balticus, Anaulus simonsenii and Plagiogramma tenuissimum, in these genera through the use of the scanning electron microscope, the valve ultrastructures in these species were revealed, including symmetric valves without rimoportula, a hyaline area in the central part of the valve and unperforated girdle bands (Witkowski et al 2020).…”