The structure and reproduction of Patenocarpus paraphysiferus gen. et sp. nov. (Dermonemataceae, Nemaliales, Rhodophyta)

Yoshizaki, Makoto

doi:10.2216/i0031-8884-26-1-47.1

Cited by 9 publications

(5 citation statements)

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“…If one regards nonaccessory carpogonial branches as the ancestral state, then accessory carpogonial branches have arisen on several occasions. The formation of diffuse gonimoblasts appears to have arisen at least three times, as it is a feature of Cumagloia, Dotyophycus (Abbott 1976;Kraft 1988), Patenocarpus (Yoshizaki 1987) and Yamadaella (Abbott 1970;Wynne & Huisman 1998), and slightly diffuse gonimoblasts are characteristic of some species of Liagora (Huisman & Wynne 1999;Huisman 2002).…”

Section: The Liagoraceaementioning

confidence: 99%

“…A wide variety of pre and postfertilization processes has resulted in the descriptions of numerous genera based on very precise reproductive events (e.g. Abbott & Doty 1960;Abbott 1970Abbott ,1976Yoshizaki 1987;Kraft 1989;Huisman & Borowitzka 1990;Huisman & Kraft 1994;Huisman & Schils 2002), and many genera have been recently monographed (Huisman 1986(Huisman , 2002Huisman et al . 2004).…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetic study of the Nemaliales (Rhodophyta) based on large-subunit ribosomal DNA sequences supports segregation of the Scinaiaceae fam. nov. and resurrection of Dichotomaria Lamarck

2004

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Gene sequence data have been newly obtained for 18 species in 13 genera of the order Nemaliales (Rhodophyta), allowing for the first time a relatively comprehensive molecular phylogenetic appraisal of the order. The phylogenetic trees generated from these data support the recognition of three families: (i) the Liagoraceae as presently constituted; (ii) a reduced Galaxauraceae including Actinotrichia , Galaxaura (sensu lato ), and Tricleocarpa ; and (iii) a new family, Scinaiaceae, segregated from the Galaxauraceae and including the genera Scinaia , Gloiophloea , Nothogenia , and probably Whidbeyella . The four genera of the Scinaiaceae differ from the newly circumscribed Galaxauraceae in being uncalcified, and having heteromorphic life histories in which the tetrasporophyte is much reduced and filamentous or crustose. This type of life history is found in only Tricleocarpa of the Galaxauraceae. The results also show Galaxaura to be para/polyphyletic if Actinotrichia and Tricleocarpa are recognized. To remedy this, the Galaxaura marginata species complex, Galaxaura diesingiana , and Galaxaura obtusata are removed from the genus and placed in the resurrected Dichotomaria Lamarck. Galaxaura marginata , presently thought to be wide-ranging and morphologically variable, is shown to comprise several species. As a consequence, Galaxaura tenera Kjellman and Brachycladia australis Sonder are removed from the synonymy of G. marginata and restored as independent species in Dichotomaria for South African and Australian isolates, respectively. The Liagoraceae is shown to encompass genera previously placed in the segregate families Nemaliaceae and Dermonemataceae, and the value of the reproductive characters used to define those taxa is discussed.

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Section: The Liagoraceaementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phylogenetic study of the Nemaliales (Rhodophyta) based on large-subunit ribosomal DNA sequences supports segregation of the Scinaiaceae fam. nov. and resurrection of Dichotomaria Lamarck

2004

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“…Post-fertilization processes observed in the type species, S. gracilis, are entirely compatible with inclusion in the Liagoraceae. Of the genera currently recognized in the family, Stenopeltis appears to be most closely related to Patenocarpus Yoshizaki (1987), known only by its type species, P. paraphysiferus Yoshizaki. Patenocarpus has a 3 -4-celled lateral carpogonial branch, laterally spreading postfertilization gonimoblast filaments arising from upper cell of the divided zygote, and sterile paraphyses arising from the outer cortical filaments associated with the cystocarp.…”

Section: Relationships Of Stenopeltismentioning

confidence: 99%

Large subunit rDNA gene sequences and reproductive morphology revealStenopeltisto be a member of the Liagoraceae (Nemaliales, Rhodophyta), with a description ofAkalaphycusgen. nov.

Huisman¹,

Abbott²,

Sherwood³

2004

European Journal of Phycology

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A morphological and gene sequence study has shown the red algal genus Stenopeltis to be a member of the Liagoraceae (Nemaliales), not the Polyidaceae (Gigartinales) where it was placed after being segregated from Rhodopeltis. Post-fertilization events in Stenopeltis gracilis (the type of the genus) include a spreading, diffuse gonimoblast arising directly from the zygote ( = post-fertilization carpogonium), and no auxiliary cells, features characteristic of the Liagoraceae. Moreover, phylogenetic analyses based on LSU (large subunit) rDNA sequences clearly place Stenopeltis in a clade with members of the Liagoraceae. These observations are at odds with the existing taxonomic placement of the genus and a re-interpretation of earlier observations purporting to show the presence of auxiliary cells is presented. The morphology and reproduction of the three species currently attributed to the genus, S. gracilis (the type), S. setchelliae, and S. liagoroides, are described. LSU sequences as well as carpogonial branch and cystocarp morphology of S. setchelliae are distinct from those of S. gracilis (the type), and the segregate genus Akalaphycus is proposed to accommodate S. setchelliae and S. liagoroides.

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“…Three new genera, Macrocarpus , Neoizziella , and Yoshizakia including species with unfused carpogonial branches and diffuse carposporophytes, were separated from Liagora sensu stricto [ 9 , 31 ]. The other liagoracean genera, Akalaphycus , Patenocarpus , and Stenopeltis , also produce diffuse carposporophytes; however, they produce paraphyses [ 33 , 38 ]. Liagora japonica produces unfused carpogonial branches and diffuse carposporophytes without paraphyses, which are similar to those of Macrocarpus , Neoizziella , and Yoshizakia .…”

Section: Discussionmentioning

confidence: 99%

Next-Generation Sequencing of an 88-Year-Old Specimen of the Poorly Known Species Liagora japonica (Nemaliales, Rhodophyta) Supports the Recognition of Otohimella gen. nov.

et al. 2016

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Liagora japonica is a red algal species distributed in temperate regions of Japan. This species has not been collected from its type locality on the Pacific coast of Japan since 1927 and seems to have become extinct in this area. For molecular characterization of L. japonica, we extracted DNA from the topotype material of L. japonica collected in 1927, analyzed seven genes using Illumina next-generation sequencing, and compared these data with sequences from modern samples of similar red algae collected from the Japan Sea coast of Japan. Both morphological and molecular data from modern samples and historical specimens (including the lectotype and topotype) suggest that the specimens from the Pacific and Japan Sea coasts of Japan should be treated as a single species, and that L. japonica is phylogenetically separated from the genus Liagora. Based on the phylogenetic results and examination of reproductive structures, we propose Otohimella japonica gen. et comb. nov., characterized morphologically by diffuse carposporophytes, undivided carposporangia, and involucral filaments initiated only from the cortical cell on the supporting cell.

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The structure and reproduction of Patenocarpus paraphysiferus gen. et sp. nov. (Dermonemataceae, Nemaliales, Rhodophyta)

Cited by 9 publications

References 0 publications

Phylogenetic study of the Nemaliales (Rhodophyta) based on large-subunit ribosomal DNA sequences supports segregation of the Scinaiaceae fam. nov. and resurrection of Dichotomaria Lamarck

Phylogenetic study of the Nemaliales (Rhodophyta) based on large-subunit ribosomal DNA sequences supports segregation of the Scinaiaceae fam. nov. and resurrection of Dichotomaria Lamarck

Large subunit rDNA gene sequences and reproductive morphology revealStenopeltisto be a member of the Liagoraceae (Nemaliales, Rhodophyta), with a description ofAkalaphycusgen. nov.

Next-Generation Sequencing of an 88-Year-Old Specimen of the Poorly Known Species Liagora japonica (Nemaliales, Rhodophyta) Supports the Recognition of Otohimella gen. nov.

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