Description of Naviculavanseea 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

Elif Yılmaz; David G Mann; Romain Gastineau; Rosa Trobajo; Cüneyt Nadir Solak; Ewa Górecka; Monique Turmel; Claude Lemieux; Nesil Ertorun; Andrzej Witkowski

doi:10.3897/phytokeys.241.118903

Description of Naviculavanseea 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

PhytoKeys. 2024 Apr 8:241:27-48. doi: 10.3897/phytokeys.241.118903. eCollection 2024.

Authors

Affiliations

¹ Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16A, PL70-383 Poland.
² Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, Scotland, UK.
³ Marine and Continental Waters, Institute for Food and Agricultural Research and Technology (IRTA), Crta de Poble Nou Km 5.5, E-43540 La Ràpita, Catalunya, Spain.
⁴ Department of Biology, Faculty of Science & Art, Dumlupınar University, 43000 Kütahya, Türkiye.
⁵ Département de biochimie, de microbiologie et de bio-Informatique, Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, QC, Canada.
⁶ Department of Biology, Science Faculty, Eskişehir Technical University, 26000 Eskişehir, Türkiye.
⁷ Deceased.

Abstract

The current article describes Naviculavanseeasp. nov., a new species of diatom from Lake Van, a highly alkaline lake in Eastern Anatolia (Türkiye). The description is based on light and scanning electron microscopy performed on two monoclonal cultures. The complete nuclear rRNA clusters and plastid genomes have been sequenced for these two strains and the complete mitogenome for one of them. The plastome of both strains shows the probable loss of a functional ycf35 gene. They also exhibit two IB4 group I introns in their rrl, each encoding for a putative LAGLIDADG homing endonuclease, with the first L1917 IB4 intron reported amongst diatoms. The Maximum Likelihood phylogeny inferred from a concatenated alignment of 18S, rbcL and psbC distinguishes N.vanseea sp. nov. from the morphologically similar species Naviculacincta and Naviculamicrodigitoradiata.

Keywords: Group I intron; LAGLIDADG; Naviculaceae; mitogenome; plastome; pseudogene; soda lake.

Elif Yılmaz, David G. Mann, Romain Gastineau, Rosa Trobajo, Cüneyt Nadir Solak, Ewa Górecka, Monique Turmel, Claude Lemieux, Nesil Ertorun, Andrzej Witkowski.

Grants and funding

Ministry of Science and Higher Education of Poland: Regionalna inicjatywa doskonałości: Zwiększenie potencjału, jakości oraz umiędzynarodowienia interdyscyplinarnych badań przyrodniczych. Natural Sciences and Engineering Research Council of Canada: grant RGPIN-2017-04506. Generalitat de Catalunya: CERCA Programme. Scottish Government's Rural and Environment Science and Analytical Services Division.