The taxonomy and diversity of Proschkinia (Bacillariophyta), a common but enigmatic genus from marine coasts
Visualitza/Obre
Autor/a
Kim, So-Yeon
Witkowski, Andrzej
Park, Jong-Gyu
Gastineau, Romain
Ashworth, Matt P.
Kim, Byoung‐Seok
Mann, David G.
Li, Chunlian
Igersheim, Anton
Płociński, Tomasz
Yoo, Yeong-Du
Chung, Sang-Ok
Theriot, Edward C.
Data de publicació
2020-04-07ISSN
0022-3646
Resum
Detailed morphological documentation is provided for established Proschkinia taxa, including the generitype, P. bulnheimii, and P. complanata, P. complanatula, P. complanatoides and P. hyalosirella, and six new species. All established taxa are characterized from original material from historical collections. The new species described in this paper (P. luticola, P. staurospeciosa, P. impar, P. modesta, P. fistulispectabilis, and P. rosowskii) were isolated from the Western Pacific (Yellow Sea coast of Korea) and the Atlantic (Scottish and Texas coasts). Thorough documentation of the frustule, valve and protoplast architecture revealed the combination of characters diagnostic of the genus Proschkinia: a single‐lobed chloroplast; a broad girdle composed of U‐shaped, perforated bands; the position of the conopeate raphe‐sternum relative to the external and internal valve surface; and the presence of an occluded process through the valve, termed the “fistula”. Seven strains of Proschkinia were grown in culture and five of these were sequenced for nuclear ribosomal SSU and plastid‐encoded rbcL. Phylogenetic analysis recovered a clade of Proschkinia with Fistulifera, another fistula‐bearing diatom genus, and together these were sister to a clade formed of the Stauroneidaceae; in turn, all of these were sister to a clade composed of Parlibellus and two monoraphid genera Astartiella and Schizostauron. Despite morphological similarities between Proschkinia and the Naviculaceae, these two taxa are distant in our analysis. We document the variation in the morphology of Proschkinia, including significant variability in the fistula, suggesting that fistula ultrastructure might be one of the key features for species identification within the genus.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
574 - Ecologia general i biodiversitat
Pàgines
119
Publicat per
Wiley
Publicat a
Journal of Phycology
Citació
Kim, So‐Yeon, Andrzej Witkowski, Jong‐Gyu Park, Romain Gastineau, Matt P. Ashworth, Byoung‐Seok Kim, and David G. Mann et al. 2020. "The Taxonomy And Diversity Of Proschkinia (Bacillariophyta), A Common But Enigmatic Genus From Marine Coasts". Journal Of Phycology. Wiley. doi:10.1111/jpy.12998.
Número de l'acord de la subvenció
EC/H2020/734708/EU/The Genus Haslea, New marine resources for blue biotechnology and Aquaculture/GHaNA
Programa
Aigües Marines i Continentals
Aquest element apareix en la col·lecció o col·leccions següent(s)
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