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Taxonomic review of Tryblionella with special reference to the Apiculatae group-New characters of genus Tryblionella sensu stricto (Bacillariaceae)

Publicated to:Journal Of Phycology. - 2025-03-18 (), DOI: 10.1111/jpy.70004

Authors: Olszy?ski RM; Górecka E; Trobajo R; Gastineau R; Ashworth M; Mann DG

Affiliations

Department of Molecular Biosciences, University of Texas at Austin, Austin, Texas, USA. - Author
Faculty of Biology and Environmental Protection, Department of Algology and Mycology, University of Lodz, Łódź, Poland. - Author
Institute of Marine and Environmental Sciences, University of Szczecin, Szczecin, Poland. - Author
IRTA-Institute for Food and Agricultural Research and Technology, La Rápita, Catalonia, Spain. - Author

Abstract

Tryblionella (Bacillariaceae) was described by Smith in 1853, and for many years, the diagnosis of this genus was questionable. Recent molecular analysis based on the rbcL gene marker suggests that Tryblionella is a polyphyletic genus with T. apiculata, T. hungarica, and T. gaoana forming a distinct group from other Tryblionella representatives. Therefore, this study aimed to clarify the diagnosis of Tryblionella as a genus. The focus of this study was a selected group of species previously categorized within Grunow's section Apiculatae, which includes the type species T. acuminata. This classification serves as a foundation for conducting morphological and molecular comparisons with taxa of Tryblionella sensu lato, which are likely to represent distinct and highly diverse genera. Our review includes a detailed examination of frustule ultrastructure and ontogeny combined with a new molecular phylogenetic analysis derived from a three-gene concatenated dataset. The results of our research indicated that among Tryblionella, several monophyletic groups of taxa can be distinguished, including Tryblionella sensu stricto (s.s.), by three key characters: a porose valve cross-section; longitudinal valve undulation, where the peak of the undulation is located on the proximal side of the valve; and the presence of an axial sternum with thickened and relief virgae. Tryblionella s.s. taxa share a similar girdle structure: The girdle is graded, except that the first band bears a single row of poroids in the pars exterior and a crenulate margin on the side corresponding to the distal valve mantle.

Keywords
BacillariaceaeDiatomsPhylogenyRevisionTryblionella

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Journal Of Phycology due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2025, it was in position 80/265, thus managing to position itself as a Q1 (Primer Cuartil), in the category Plant Sciences.

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-05-07:

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 0.25.

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Poland; United States of America.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: Last Author (Mann DG).