来自土耳其共和国高碱性凡湖的硅藻新物种sp. nov.（舟形藻目，舟形藻科）的描述，及其细胞器基因组的完整特征和多基因系统发育分析

Description of 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.

作者信息

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

机构信息

Institute of Marine and Environmental Sciences, University of Szczecin, Mickiewicza 16A, PL70-383 Poland.

Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, Scotland, UK.

出版信息

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

DOI:10.3897/phytokeys.241.118903

PMID:38628637

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11019260/

Abstract

The current article describes , 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 gene. They also exhibit two IB4 group I introns in their , 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 , and distinguishes sp. nov. from the morphologically similar species and .

摘要

本文描述了一种来自凡湖（位于土耳其东安纳托利亚的一个高碱性湖泊）的硅藻新物种。该描述基于对两种单克隆培养物进行的光学显微镜和扫描电子显微镜观察。已对这两个菌株的完整核rRNA簇和质体基因组进行了测序，并对其中一个菌株的完整有丝分裂基因组进行了测序。两个菌株的质体基因组均显示一个功能基因可能缺失。它们在其中还表现出两个IB4 I类内含子，每个内含子编码一个推定的LAGLIDADG归巢内切酶，其中第一个L1917 IB4内含子是在硅藻中报道的。从、和的串联比对推断出的最大似然系统发育将新种与形态相似的物种和区分开来。