Complete chloroplast genomes of two closely related diatoms, Nitzschia nienhuisii and Epithemia catenata

Mailor Amaral; Aimee Caye G. Chang; Kyle G. Keepers; Matt P. Ashworth; Thomas A. Frankovich; Sarah E. Hamsher; Scott R. Miller; Jingchun Li; Patrick Kociolek

doi:10.1080/23802359.2025.2594288

Complete chloroplast genomes of two closely related diatoms, Nitzschia nienhuisii and Epithemia catenata

Mailor Amaral
, Aimee Caye G. Chang
, Kyle G. Keepers
, Matt P. Ashworth
, Thomas A. Frankovich
, Sarah E. Hamsher
, Scott R. Miller
, Jingchun Li
, Patrick Kociolek

Division of Biological and Biomedical Sciences

Research output: Contribution to journal › Comment/debate

Abstract

We report the complete chloroplast genomes of two closely related taxa, Nitzschia nienhuisii and Epithemia catenata. The plastids share 96.85% nucleotide similarity and exhibit similar genomic structure. The N. nienhuisii plastome is 128,415 bp with 129 protein-coding genes, whereas E. catenata plastome is 140,525 bp with 130 protein-coding genes, including a duplicated psaJ in the inverted repeat. Both genomes encode 30 tRNAs, one tmRNA, six rRNAs, and two pseudogenes (tyrC and ycf42). The larger E. catenata genome likely reflects 12 unique ORFs. Maximum likelihood phylogenetic analysis supports a close relationship between these taxa.

Original language	English
Pages (from-to)	1259-1263
Number of pages	5
Journal	Mitochondrial DNA Part B: Resources
Volume	10
Issue number	12
DOIs	https://doi.org/10.1080/23802359.2025.2594288
State	Published - 2025

Keywords

Plastomes
Rhopalodiales
genomics
organelles
phylogenetics

Access to Document

10.1080/23802359.2025.2594288

Cite this

@article{b3932f139fd8404e981b35a7c3c30055,

title = "Complete chloroplast genomes of two closely related diatoms, Nitzschia nienhuisii and Epithemia catenata",

abstract = "We report the complete chloroplast genomes of two closely related taxa, Nitzschia nienhuisii and Epithemia catenata. The plastids share 96.85\% nucleotide similarity and exhibit similar genomic structure. The N. nienhuisii plastome is 128,415 bp with 129 protein-coding genes, whereas E. catenata plastome is 140,525 bp with 130 protein-coding genes, including a duplicated psaJ in the inverted repeat. Both genomes encode 30 tRNAs, one tmRNA, six rRNAs, and two pseudogenes (tyrC and ycf42). The larger E. catenata genome likely reflects 12 unique ORFs. Maximum likelihood phylogenetic analysis supports a close relationship between these taxa.",

keywords = "Plastomes, Rhopalodiales, genomics, organelles, phylogenetics",

author = "Mailor Amaral and Chang, \{Aimee Caye G.\} and Keepers, \{Kyle G.\} and Ashworth, \{Matt P.\} and Frankovich, \{Thomas A.\} and Hamsher, \{Sarah E.\} and Miller, \{Scott R.\} and Jingchun Li and Patrick Kociolek",

note = "Publisher Copyright: {\textcopyright} 2025 The Author(s). Published by Informa UK Limited, trading as Taylor \& Francis Group.",

year = "2025",

doi = "10.1080/23802359.2025.2594288",

language = "English",

volume = "10",

pages = "1259--1263",

journal = "Mitochondrial DNA Part B: Resources",

issn = "2380-2359",

publisher = "Taylor and Francis Ltd.",

number = "12",

}

TY - JOUR

T1 - Complete chloroplast genomes of two closely related diatoms, Nitzschia nienhuisii and Epithemia catenata

AU - Amaral, Mailor

AU - Chang, Aimee Caye G.

AU - Keepers, Kyle G.

AU - Ashworth, Matt P.

AU - Frankovich, Thomas A.

AU - Hamsher, Sarah E.

AU - Miller, Scott R.

AU - Li, Jingchun

AU - Kociolek, Patrick

PY - 2025

Y1 - 2025

N2 - We report the complete chloroplast genomes of two closely related taxa, Nitzschia nienhuisii and Epithemia catenata. The plastids share 96.85% nucleotide similarity and exhibit similar genomic structure. The N. nienhuisii plastome is 128,415 bp with 129 protein-coding genes, whereas E. catenata plastome is 140,525 bp with 130 protein-coding genes, including a duplicated psaJ in the inverted repeat. Both genomes encode 30 tRNAs, one tmRNA, six rRNAs, and two pseudogenes (tyrC and ycf42). The larger E. catenata genome likely reflects 12 unique ORFs. Maximum likelihood phylogenetic analysis supports a close relationship between these taxa.

AB - We report the complete chloroplast genomes of two closely related taxa, Nitzschia nienhuisii and Epithemia catenata. The plastids share 96.85% nucleotide similarity and exhibit similar genomic structure. The N. nienhuisii plastome is 128,415 bp with 129 protein-coding genes, whereas E. catenata plastome is 140,525 bp with 130 protein-coding genes, including a duplicated psaJ in the inverted repeat. Both genomes encode 30 tRNAs, one tmRNA, six rRNAs, and two pseudogenes (tyrC and ycf42). The larger E. catenata genome likely reflects 12 unique ORFs. Maximum likelihood phylogenetic analysis supports a close relationship between these taxa.

KW - Plastomes

KW - Rhopalodiales

KW - genomics

KW - organelles

KW - phylogenetics

UR - https://www.scopus.com/pages/publications/105023401066

U2 - 10.1080/23802359.2025.2594288

DO - 10.1080/23802359.2025.2594288

M3 - Comment/debate

AN - SCOPUS:105023401066

SN - 2380-2359

VL - 10

SP - 1259

EP - 1263

JO - Mitochondrial DNA Part B: Resources

JF - Mitochondrial DNA Part B: Resources

IS - 12

ER -

Complete chloroplast genomes of two closely related diatoms, Nitzschia nienhuisii and Epithemia catenata

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this