Back to Search
Start Over
Chloroplast genome evolution and phylogeny of the early-diverging charophycean green algae with a focus on the Klebsormidiophyceae and Streptofilum.
- Source :
-
Journal of phycology [J Phycol] 2023 Dec; Vol. 59 (6), pp. 1133-1146. Date of Electronic Publication: 2023 Aug 07. - Publication Year :
- 2023
-
Abstract
- The Klebsormidiophyceae are a class of green microalgae observed globally in both freshwater and terrestrial habitats. Morphology-based classification schemes of this class have been shown to be inadequate due to the simple morphology of these algae, the tendency of morphology to vary in culture versus field conditions, and rampant morphological homoplasy. Molecular studies revealing cryptic diversity have renewed interest in this group. We sequenced the complete chloroplast genomes of a broad series of taxa spanning the known taxonomic breadth of this class. We also sequenced the chloroplast genomes of three strains of Streptofilum, a recently discovered green algal lineage with close affinity to the Klebsormidiophyceae. Our results affirm the previously hypothesized polyphyly of the genus Klebsormidium as well as the polyphyly of the nominal species in this genus, K. flaccidum. Furthermore, plastome sequences strongly support the status of Streptofilum as a distinct, early-diverging lineage of charophytic algae sister to a clade comprising Klebsormidiophyceae plus Phragmoplastophyta. We also uncovered major structural alterations in the chloroplast genomes of species in Klebsormidium that have broad implications regarding the underlying mechanisms of chloroplast genome evolution.<br /> (© 2023 The Authors. Journal of Phycology published by Wiley Periodicals LLC on behalf of Phycological Society of America.)
- Subjects :
- Phylogeny
Evolution, Molecular
Genome, Chloroplast
Chlorophyta genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1529-8817
- Volume :
- 59
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Journal of phycology
- Publication Type :
- Academic Journal
- Accession number :
- 37548118
- Full Text :
- https://doi.org/10.1111/jpy.13359