<i>Lophosiphonia obscura</i> and <i>Polysiphonia sukatarii sp. nov</i>. (Rhodomelaceae, Rhodophyta) from mesohaline Lake Bafa, Turkey

Díaz‐Tapia, Pilar; Kızılkaya, İnci Tüney; Taşkın, Ergün

doi:10.1080/00318884.2022.2035169

Cited by 2 publications

(7 citation statements)

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“…These lineages were not placed as sister in our tree, but their phylogenetic relationships remained unresolved. Previous studies using different taxon selection placed these two clades either as sister lineages or paraphyletic with respect to the tribe Streblocladieae, as is the case in our Figure 1 (Bustamante et al., 2015; Díaz‐Tapia, Pasella, & Verbruggen, 2018; Díaz‐Tapia, Tüney‐Kizilkaya, & Taşkin, 2022; Huisman et al., 2017; Savoie & Saunders, 2019). Moreover, the relationships of a representative species of each of these clades were resolved as monophyletic using a phylogenomic approach (Díaz‐Tapia, Maggs, West, & Verbruggen, 2017).…”

Section: Discussionsupporting

confidence: 71%

“…Among the family Rhodomelaceae, this combination of characters has been exclusively found in other species of the Bryocladia clade (i.e., B. adamsiae , B. cuspidata , and B. thyrsigera ), as well as in Lophosiphonia . Lophosiphonia species are morphologically distinctive, with thin axes (<140 μm) sparsely branched (Díaz‐Tapia & Bárbara, 2013; Díaz‐Tapia, Tüney‐Kizilkaya, & Taşkin, 2022), which contrasts with the thick axes of the Bryocladia with more than four pericentral cells (>160 μm) clothed by determinate lateral branches spirally arranged (Díaz‐Tapia, Pasella, & Verbruggen, 2018; Kützing, 1864; Schneider & Searles, 1991). Thus, morphological characters indicate a close affinity between B. cervicornis and other species of the Bryocladia clade with more than four pericentral cells.…”

Section: Discussionmentioning

confidence: 99%

“…The circumscription of Polysiphonia has been deeply modified in recent years, and integrative studies based on molecular and morphological investigations have led to the segregation or redefinition of two tribes and 18 genera (Amos et al., 2021; Díaz‐Tapia, Maggs, McIvor, et al., 2017; Díaz‐Tapia, Maggs, West, & Verbruggen, 2017; Savoie & Saunders, 2016, 2019; Wynne, 2018). Despite recent efforts and substantial advances, the current concept of Polysiphonia still consists of two distinct lineages that are resolved either as paraphyletic or monophyletic groups in phylogenies using different markers and taxon selection (Bustamante et al., 2015; Díaz‐Tapia, Pasella, & Verbruggen, 2018; Díaz‐Tapia, Tüney‐Kizilkaya, & Taşkin, 2022; Huisman et al., 2017). One of them includes the generitype P. stricta and another 11 Polysiphonia species.…”

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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Resolving the taxonomy of the Polysiphonia scopulorum complex and the Bryocladia lineage (Rhodomelaceae, Rhodophyta)

Díaz‐Tapia,

Verbruggen

2023

Journal of Phycology

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Cryptic diversity is common among marine macroalgae, with molecular tools leading to the discovery of many new species. To assign names to these morphologically similar species, the type and synonyms have to be examined, and if appropriate, new species must be described. The turf‐forming red alga Polysiphonia scopulorum was originally described from Rottnest Island, Australia, and subsequently widely reported in tropical and temperate coasts based on morphological identifications. A recent study of molecular species delineation revealed a complex of 12 species in Australia, South Africa, and Europe. These species are placed in a taxonomically unresolved lineage of the tribe Polysiphonieae. The aim of this study was to resolve the genus‐ and species‐level taxonomy of this complex and related species using molecular and morphological information. Three morphologically indistinguishable species of the complex were found at the type locality of P. scopulorum, preventing a straightforward assignment of the name to any of the molecular lineages. Therefore, we propose a molecularly characterized epitype. Polysiphonia caespitosa is reinstated for the only species found in its type locality in South Africa. We describe seven new species. Only one species of the complex can be morphologically recognized, with the other eight species indistinguishable based on morphometric analysis. The studied complex, together with another seven species currently placed in Polysiphonia and two Bryocladia species, formed a clade distinct from Polysiphonia sensu stricto. Based on observations of Bryocladia cervicornis (the generitype), we describe our seven new species in the genus Bryocladia and transfer another nine species from Polysiphonia to Bryocladia.

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Section: Discussionsupporting

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Resolving the taxonomy of the Polysiphonia scopulorum complex and the Bryocladia lineage (Rhodomelaceae, Rhodophyta)

Díaz‐Tapia,

Verbruggen

2023

Journal of Phycology

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“…In addition, many cryptic and semi‐cryptic species have been detected in the family (Bustamante et al, 2015b; Mamoozadeh & Freshwater, 2012; Savoie & Saunders, 2016). Also, new species have been observed in poorly explored habitats or assemblages (Díaz‐Tapia, Tüney‐Kizilkaya, & Taskin, 2022; Kim & Kim, 2014), such as algal turfs that are composed of small, densely packed macroalgae (Connell et al, 2014; Díaz‐Tapia & Bárbara, 2014). Turfs are among the dominant algal assemblages in tropical reefs, and their abundance is expanding in temperate regions as a consequence of the decline of kelp forests (Filbee‐Dexter & Wernberg, 2018; O'Brien & Scheibling, 2018; Price & Scott, 1992).…”

Section: Introductionmentioning

confidence: 99%

Molecular analyses of turf algae reveal a new species and an undetected introduction in the Pterosiphonieae (Rhodomelaceae, Rhodophyta)

Díaz‐Tapia

Nelson

Verbruggen

2023

Journal of Phycology

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Introduced seaweeds and undescribed species often remain undetected because marine regional floras are as yet poorly understood. DNA sequencing facilitates their detection, but databases are incomplete, so their improvement will continue to lead the discovery of these species. Here we aim to clarify the taxonomy of two turf‐forming red algal Australian species that morphologically resemble the European Aphanocladia stichidiosa. We also aim to elucidate whether either of these species could have been introduced in Europe or Australia. We studied their morphology, analyzed 17 rbcL sequences of European and Australian specimens, examined their generic assignment using a phylogeny based on 24 plastid genomes, and investigated their biogeography using a taxon‐rich phylogeny including 52 rbcL sequences of species in the Pterosiphonieae. The rbcL sequences of one of the Australian species were identical to A. stichidiosa from Europe, considerably expanding its known distribution. Unexpectedly, our phylogenetic analyses resolved this species in the Lophurella clade rather than in Aphanocladia and the new combination L. stichidiosa is proposed. The other Australian species is described as L. pseudocorticata sp. nov. Although L. stichidiosa was originally described in the Mediterranean ca. 70 years ago, our phylogenetic analyses placed it in a lineage restricted to the southern hemisphere, showing that it is native to Australia and introduced to Europe. This study confirms that further work using molecular tools is needed to characterize seaweed diversity, especially among the poorly explored algal turfs, and showcases the usefulness of phylogenetic approaches to uncover introduced species and to determine their native ranges.

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Lophosiphonia obscura and Polysiphonia sukatarii sp. nov. (Rhodomelaceae, Rhodophyta) from mesohaline Lake Bafa, Turkey

Cited by 2 publications

References 59 publications

Resolving the taxonomy of the Polysiphonia scopulorum complex and the Bryocladia lineage (Rhodomelaceae, Rhodophyta)

Resolving the taxonomy of the Polysiphonia scopulorum complex and the Bryocladia lineage (Rhodomelaceae, Rhodophyta)

Molecular analyses of turf algae reveal a new species and an undetected introduction in the Pterosiphonieae (Rhodomelaceae, Rhodophyta)

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