Polysiphonia ulleungensis sp. nov. (Rhodomelaceae, Rhodophyta): a new diminutive species from Korea belonging to Polysiphonia sensu stricto

Abstract

Polysiphonia sensu stricto is characterized by having 4 ecorticate pericentral cells, rhizoids in open connection with the pericentral cells, four-celled carpogonial branches, spermatangial branches replacing the whole trichoblast, and tetrasporangia arranged in straight series. Polysiphonia ulleungensis sp. nov. is newly described from Sadongri, Ulleung Island, Korea, based on morphological and molecular evidence. It is mainly characterized by having ecorticate axes with 4 pericentral cells, apical cells transversely or obliquely divided, unicellular rhizoids in open connection with pericentral cells, very scarce trichoblasts and scar cells, procarps with a four-celled carpogonial branch, and spermatangial branches replacing the whole trichoblast. Polysiphonia ulleungensis is closely similar in morphology to P. atlantica sensu lato. We concluded that materials of P. atlantica sensu Nam and Kang from Korea correspond to P. ulleungensis. By contrast, the new species differs morphologically from the Atlantic specimens of P. atlantica as well as from P. atlantica sensu Kim and Lee from Korea. Morphological characteristics and rbcL sequence analyses support the taxonomic placement of P. ulleungensis within Polysiphonia sensu stricto.

Polysiphonia freshwaterisp. nov. andPolysiphonia koreanasp. nov.: two new species ofPolysiphonia(Rhodomelaceae, Rhodophyta) from Korea

“…Recently, several new species have been reported from Korea after molecular analyses were conducted as evidence for a species level designation: Polysiphonia ulluengensis, P. dokdoensis, P. amplacapilli B. Kim (Bustamante et al, 2014a(Bustamante et al, , 2014bKim & Kim, 2014). Here, we reassessed the diversity of Polysiphonia from Korea to include two new species, namely, P. freshwateri sp.…”

“…nov. in having a rigid texture (Womersley, 2003); and P. ulluengensis differs from P. koreana sp. nov. in having an extensive prostrate system and oblique apical cell division (Bustamante et al, 2014b). Morphologically, P. koreana sp.…”

“…Stuercke & Freshwater (2010) In Korea, Polysiphonia has been studied by Yoon (1986), Kim & Lee (1996), and Nam & Kang (2012). Twenty-nine species of Polysiphonia sensu lato have been reported, and six of these species have been placed in Polysiphonia (Nam & Kang, 2012;Bustamante et al, 2014b). Recently, the relationships of P. dokdoensis, P. morrowii Harvey and P. ulluengensis have been clarified and confirmed in Polysiphonia by using detailed morphological examination and molecular data (Kim et al, 2004;Bustamante et al, 2014a).…”

Wilsonosiphonia gen. nov. (Rhodomelaceae, Rhodophyta) based on molecular and morpho‐anatomical characters

“…Cho, Polysiphonia nuda Mamoozadeh & Freshwater (Mamoozadeh and Freshwater , Bustamante et al. , ). However, if there are more than four pericentral cells, the number of pericentral cells varies, as in Lampisiphonia iberica Bárbara, Secilla, Diaz‐Tapia & H.G.…”

Molecular Assisted Identification Reveals Hidden Red Algae Diversity from the Burica Peninsula, Pacific Panama

“…A recent study of the closely related species Melanothamnus japonica (Harvey) Díaz-Tapia and Maggs, M. The rbcL-3P divergence between the Caribbean Panama M. pseudovillum and Punta Burica Melanothamnus sp. was 2.0%, which is generally considered to represent the low end of interspecific divergence values for Polysiphonia sensu lato species e.g., [96][97][98]. COI-5P divergence values in red algae are generally greater than those for rbcL in complementary comparisons e.g., [99,100].…”