Research
| Title： | Streptosarcina moshanensis sp. nov., a new Klebsormidiophycean (Charophyta) species with description of its chloroplast genome |
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| First author： | Liu, Yukang; Dai, Qingyu; Su, Feilong; Liu, Guoxiang; Zhu, Huan |
| Journal： | PHYCOLOGIA |
| Years： | 2025 |
| DOI： | 10.1080/00318884.2025.2501229 |
| Abstract： | The Klebsormidiophyceae is a widely distributed class of green algae, with species playing a crucial role primarily in subaerial ecosystems. As one of the main clades within the Charophyta, this class is also pivotal in studies of plant terrestrialization. During a survey of soil algae diversity, a new klebsormidiophycean species was collected from sandy soil habitats and successfully isolated. This alga shared a number of unique morphological characteristics with species in the genus Streptosarcina, including short filaments, and diad forms, true branching, distinctive pyrenoid structure, and size and structure of its chloroplast genome, which are similar to species within Streptosarcina. Compensatory base change analysis of the ITS2 rDNA sequence, along with phylogenetic analyses, confirmed that this is a separate species within the genus Streptosarcina. Based on these results, we propose this isolate as a new species, Streptosarcina moshanensis sp. nov. Its chloroplast genome exhibits unique rearrangements and inversion structures, providing valuable insights into the evolutionary patterns within Klebsormidiophyceae. This study marks the first record of Streptosarcina in subtropical Asia, providing evidence of its broad ecological distribution. This study highlights the importance of integrating molecular and chloroplast genome analyses, demonstrating their combined potential in achieving accurate taxonomic classification. |
