Article
Plant Sciences
So Young Jeong, Guillermo Diaz-Pulido, Gavin W. Maneveldt, Paul W. Gabrielson, Wendy A. Nelson, Boo Yeon Won, Tae Oh Cho
Summary: A multigene molecular phylogeny was conducted to study the genus Phymatolithon. The study revealed the polyphyletic grouping of two monophyletic clades within the Hapalidiales. As a result, a new genus, Phymatolithopsis, was established, consisting of three species. Phymatolithopsis is closely related to Mesophyllum and is distinct from Phymatolithon and boreal species assigned to Lithothamnion. Morpho-anatomical characteristics were used to differentiate Phymatolithopsis from Phymatolithon, including the origin of conceptacle primordia and the distribution of gonimoblast filaments in carposporangial conceptacles.
JOURNAL OF PHYCOLOGY
(2022)
Article
Plant Sciences
Cintia Iha, D. Wilson Freshwater, Silvia M. P. B. Guimaraes, Mariana Cabral Oliveira
Summary: DNA sequence analysis reveals that the current classification of Gelidium is not monophyletic, with three distinctive lineages. A new genus, Gelidiorariphycus, is described to accommodate one of these lineages. The species in this genus have similar morphologies and primarily grow on shallow subtidal rocky shores.
Article
Plant Sciences
Joseph L. Richards, William E. Schmidt, Suzanne Fredericq, Thomas Sauvage, Viviana Pena, Line Le Gall, Luz Elena Mateo-Cid, Angela Catalina Mendoza-Gonzalez, Jeffery R. Hughey, Paul W. Gabrielson
Summary: This study utilized morpho-anatomy and DNA sequence analysis to identify a species of nongeniculate coralline algae, and discovered two new species. The research also revealed that the identified species currently inhabits mesophotic rhodolith beds in the northwestern Gulf of Mexico and other Caribbean regions.
JOURNAL OF PHYCOLOGY
(2021)
Article
Plant Sciences
Aki Kato, Daniela Basso, Annalisa Caragnano, Graziella Rodondi, Line Le Gall, Viviana Pena, Jason M. Hall-Spencer, Masasuke Baba
Summary: After analyzing morpho-anatomical data and DNA sequences, it was discovered that the so-called "Lithophyllum okamurae" actually consisted of two species, Lithophyllum okamurae and a new cryptic species named L. neo-okamurae. These two species share similarities in morphology but can be distinguished by specific characteristics.
Article
Plant Sciences
Cibele Conceicao dos Santos, Jose Marcos de Castro Nunes, Gabriel do Nascimento Santos, Edilene Maria dos Santos Pestana, Valeria Cassano, Goia de Mattos Lyra
Summary: This study conducted molecular, genetic, and morphological analyses of Lomentariaceae, resulting in the discovery of a new species, Ceratodictyon sanctae-crucis sp. nov., and the proposal of a new genus, Yendoa gen. nov., within Lomentariaceae. The study also revealed that Lomentariaceae now consists only of monophyletic genera, providing a more coherent taxonomic framework for the family.
Article
Plant Sciences
John M. Huisman, Gary W. Saunders
Summary: Three new species of the red algal genus Asteromenia were described in this study, with one being a previously misidentified undescribed species and the other two from different islands. These new species showed morphological overlap and required accurate species recognition through DNA sequencing. The study highlights the importance of sequence analysis.
Article
Environmental Sciences
Shanmei Zou, Yachao Bao, Xuemin Wu, Changhai Wang
Summary: The study evaluated the efficiency of four genetic markers in barcoding diatoms isolated from China, showing that multiple genetic markers can clearly differentiate most species and reveal potential cryptic species. COI, rbcL, and LSU sequences demonstrated high taxonomic resolution at the species level, while potential identification errors were found in public diatom sequences. Phylogenetic and character-based analysis provided consistent species identification and clearer species discrimination compared to the distance-based method.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Plant Sciences
Juliet Brodie, Leanne Melbourne, Robert J. Mrowicki, Paul Brickle, Stephen Russell, Sue Scott
Summary: A taxonomic study of Corallina from Tristan da Cunha and the Falkland Islands revealed two new species, as well as their relationships with other related species. The study used molecular and morphological methods to distinguish between different Corallina species and uncovered cryptic diversity within the genus. Further taxonomic efforts are needed in the South Atlantic region to better understand the diversity of Corallina species.
EUROPEAN JOURNAL OF PHYCOLOGY
(2021)
Article
Plant Sciences
Edilene Maria dos Santos Pestana, Jose Marcos de Castro Nunes, Valeria Cassano, Goia de Mattos Lyra
Summary: The Peyssonneliaceae is the only family in the order Peyssonneliales, encompassing widespread red encrusting algae. Through molecular phylogenies and morphological analyses, a revised taxonomic scheme for the Peyssonneliales has been proposed, uncovering underestimated diversity in Brazilian red algae.
JOURNAL OF PHYCOLOGY
(2021)
Article
Engineering, Marine
Meng-Chou Lee, Han-Yang Yeh
Summary: The newly discovered Taiwanese alga Colaconema formosanum is a new species associated with economically important local macroalgae, confirmed through morphological and molecular analysis.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Plant Sciences
Kun-Peng Fang, Fang-Ru Nan, Jia Feng, Jun-Ping Lv, Qi Liu, Xu-Dong Liu, Shu-Lian Xie
Summary: A new homocorticated species of freshwater red algal genus Sheathia, named Sheathia yunnanensis, is described and illustrated from Yunnan, China. Phylogenetic analyses based on DNA sequence data and morphological characteristics were used to identify this new species and distinguish it from other species. This study expands the diversity of Sheathia species in China.
NORDIC JOURNAL OF BOTANY
(2022)
Article
Plant Sciences
So Young Jeong, Paul W. Gabrielson, Jeffery R. Hughey, Andrew S. Hoey, Tae Oh Cho, Muhammad A. Abdul Wahab, Guillermo Diaz-Pulido
Summary: Porolithon is an ecologically important genus of crustose coralline algae, distributed abundantly in tropical and subtropical shallow margins of coral reefs. Sequence comparisons of type specimens and field-collected specimens reveal four unique genetic lineages, suggesting the absence of P. gardineri and P. craspedium in eastern Australia. Furthermore, four new species are discovered, distinguished by growth form, margin shape, and medullary system. Urgent documentation of the taxonomic diversity of Porolithon species is necessary due to their ecological importance and sensitivity to ocean acidification.
JOURNAL OF PHYCOLOGY
(2023)
Article
Plant Sciences
Rachael M. Wade, Paul W. Gabrielson, Katharine R. Hind, Jade Shivak, Jeffery R. Hughey, Sou Ohtsu, Masasuke Baba, Kazuhiro Kogame, Sandra C. Lindstrom, Kathy Ann Miller, Soren R. Schipper, Patrick T. Martone
Summary: Partial rbcL sequences were analyzed from type specimens of three early-described Corallina species. The results revealed that C. arbuscula and C. pilulifera are synonymous, with C. pilulifera being the accepted name, and that C. vancouveriensis is a distinct species. Additional species, C. hakodatensis sp. nov. and C. parva sp. nov., were also identified. These findings have important implications for the biogeography, evolution, and speciation patterns of coralline algae.
JOURNAL OF PHYCOLOGY
(2023)
Article
Plant Sciences
Soren R. Schipper, Jade P. Shivak, Katherine R. Hind, Kathy Ann Miller, Jeffery R. Hughey, Paul W. Gabrielson, Patrick T. Martone
Summary: Molecular phylogenetic analyses were conducted on 75 voucher specimens representing Corallina collections worldwide to determine whether Corallina chilensis is a distinct species or a variety of C. officinalis. DNA sequence analysis revealed that the gene sequences of C. chilensis matched unidentified coralline DNA sequences from Canada and previously published sequences from the Pacific. These findings support the conclusion that C. chilensis is a distinct species and not a variety of C. officinalis, and it is distributed in both hemispheres. However, determining the phylogenetic relationships among Corallina species remains challenging due to incongruent gene trees.
Article
Plant Sciences
So Young Jeong, Wendy A. Nelson, Judith E. Sutherland, Viviana Pena, Line Le Gall, Guillermo Diaz-Pulido, Boo Yeon Won, Tae Oh Cho
Summary: The coralline algal genus Corallinapetra is monospecific and distinct from other families and orders within the Corallinophycidae. DNA analysis supports the establishment of a new family and order for Corallinapetra, and the reassignment of L. gabrielii to Corallinapetra. Additionally, comparison of molecular data confirms the placement of L. muelleri within the Hapalidiales.
JOURNAL OF PHYCOLOGY
(2021)