Article
Genetics & Heredity
Hocheol Kim, Ji Hyun Yang, Danilo E. Bustamante, Martha S. Calderon, Andres Mansilla, Christine A. Maggs, Gayle I. Hansen, Hwan Su Yoon
Summary: The widely distributed genus Ahnfeltia has 11 accepted species names, with A. plicata and A. fastigiata possibly diverging genetically due to past geographic changes. Genome size differences and conserved gene contents were found between the two species. Phylogenetic analysis supported the monophyly of the Ahnfeltiophycidae, while individual gene trees indicated genetic diversification within Ahnfeltia populations in accordance with geographic distribution.
FRONTIERS IN GENETICS
(2021)
Article
Physics, Multidisciplinary
Wei Jiang, Duarte J. P. de Sousa, Jian-Ping Wang, Tony Low
Summary: A novel approach to achieve a giant anomalous Hall effect in materials with flat bands by decreasing electronic bandwidth to increase momentum separation is proposed. This approach can be realized experimentally through strain engineering in pyrochlore and spinel compounds.
PHYSICAL REVIEW LETTERS
(2021)
Article
Environmental Sciences
Rodrigo Tomazetto De Carvalho, Camila Huebner Costabile Wendt, Maria Julia Willemes, Ricardo da Gama Bahia, Marcos Farina, Leonardo Tavares Salgado
Summary: This study aimed to describe the early steps of Lithophyllum corallinae development and its calcification process. The results showed that mineralization of cell walls began at the third spore cell division, while the outermost part of the germinating spore lacked calcification. This finding is important for future research on coralline algae calcification, particularly in testing climate change scenarios.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Yu Xia, Pengjun Liu, Xiaoquan Liu, Jing Zhang, Xinfeng Tan, Xuli Jia, Yuemei Jin, Tao Liu, Yue Hu
Summary: The organellar genomes of Hypnea cervicornis were sequenced, revealing conservation and unique features. These findings provide insights into the genetic characteristics and phylogenetic relationships of H. cervicornis.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Plant Sciences
Sabrina Heiser, Charles D. Amsler, Solenn Stoeckel, James B. McClintock, Bill J. Baker, Stacy A. Krueger-Hadfield
Summary: Meiosis and syngamy generate an alternation between two ploidy stages, but the timing of these two processes varies widely across taxa, thereby generating life cycle diversity. One hypothesis suggests that life cycles with long-lived haploid stages are correlated with selfing, asexual reproduction, or both. Further investigations of algal life cycles will likely reveal the processes underlying the maintenance of sexual reproduction more broadly across eukaryotes, but more studies of natural populations are required.
JOURNAL OF PHYCOLOGY
(2023)
Article
Environmental Sciences
Samuel Sainz-Villegas, Begona Sanchez-Astrain, Araceli Puente, Jose A. Juanes
Summary: Climate change is affecting the distribution and biomass of Gelidium corneum (Hudson) J.V. Lamouroux in the Bay of Biscay. Understanding its responses to different stressors, particularly the effects on vegetative propagation, is crucial.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Plant Sciences
Joe Bracegirdle, Sarah J. Kennedy, Chuan Shan, Lukasz Wojtas, Lindsey N. Shaw, Charles D. Amsler, James B. McClintock, Bill J. Baker
Summary: Six new halogenated butenolides, tongalides A-C (1-3) and their acetylated congeners (4-6), were isolated from an extract of the Antarctic rhodophyte Delisea sp. The structures of the compounds were determined by various analytical techniques. The newly isolated compounds showed no antibacterial activity, while the extract's bioactivity was attributed to another compound.
JOURNAL OF NATURAL PRODUCTS
(2022)
Article
Geochemistry & Geophysics
J. W. D. Strong, P. A. Cawood, A. R. Cruden, O. Nebel, J. Mulder, A. P. Dickin
Summary: The Winnipeg River terrane, one of the oldest plutonic-gneiss terranes in the Archean Superior Province, plays a crucial role in understanding the evolution of Earth's largest Archean craton. The study evaluates the evolution of this terrane using various isotope data, revealing important information about rock crystallization and crustal recycling.
Article
Physics, Multidisciplinary
Z. Asadi, G. R. Boroun
Summary: We used a non-relativistic variational method to solve the four-body equation for fully-heavy tetraquark systems. The effects of quark interaction, including gluon exchange, linear and quadratic confining terms, were examined to determine the masses of cc (c) over bar(c) over bar, bb (b) over bar(b) over bar, and cc (b) over bar (;)(b) over bar (bb (c) over bar(c) over bar) with J(P) = 0(+), 1(+), and 2(+) in L = 0. Our analysis aimed to investigate the similarities and differences between linear and quadratic confinement models. The results obtained from these models show no significant differences.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Astronomy & Astrophysics
Edgar Eggert, Boris Leistedt
Summary: This study presents a new methodology to address the systematic bias caused by on-sky modulation in galaxy surveys. It successfully reduces the contamination effects and paves the way for extracting more information from multi-epoch galaxy survey data and mitigating large-scale biases more effectively.
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
(2023)
Article
Biochemistry & Molecular Biology
Vladislav Susoy, Aravinthan D. T. Samuel
Summary: This study describes a case of behavioral plasticity in the nematode C. elegans. The male performs parallel mating on agar plates, but performs spiral mating in liquid media. Spiral mating improves with experience and does not require long-term environmental changes.
Editorial Material
Biochemistry & Molecular Biology
Thomas J. Givnish
Summary: A new nuclear phylogeny for the Brassicaceae family enables advanced comparative studies on adaptation, development, coevolution, hybridization, and diversification. This family is a crucial source for genomic resources used across flowering plants.
Article
Plant Sciences
Emily M. Donham, Scott L. Hamilton, Ivano Aiello, Nichole N. Price, Jennifer E. Smith
Summary: This study investigated the impacts of warming and acidification on the growth, calcification, mineralogy, and photophysiology of the temperate articulated coralline alga, Calliarthron tuberculosum, using field observations and laboratory experiments. The results showed that calcification and growth of the coralline algae were negatively affected by warming and high pCO(2), while the photosynthetic rate increased. Furthermore, variation in Mg incorporation in cell walls of different cell types was documented for the first time in this species.
JOURNAL OF PHYCOLOGY
(2022)
Article
Zoology
Michelle Klautau, Matheus Vieira Lopes, Gabriela Tavares, Thierry Perez
Summary: The study reveals a lack of knowledge regarding sponges in the Mascarene Islands ecoregion, with only three calcareous sponge species previously identified in La Reunion. Through limited sampling efforts, 11 new calcareous sponge species were discovered, representing a significant increase in species diversity for the region. The proposed synonymization of the order Murrayonida with Clathrinida suggests a reclassification in sponge taxonomy based on the findings of this and previous studies.
ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
(2022)
Article
Astronomy & Astrophysics
Noah Huber-Feely, Mark R. Swain, Gael Roudier, Raissa Estrela
Summary: Instrument models play a crucial role in transit spectroscopy data analysis. This study evaluates the validity and performance of a simple instrument model across different instruments. The results show that the model performs well on two instruments and three filters, demonstrating its consistency for wide-scale atmospheric analysis.
ASTRONOMICAL JOURNAL
(2022)
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)
Article
Plant Sciences
Craig W. Schneider, Michael J. Wynne, Gary W. Saunders
Summary: Specimens of Spyridia 'filamentosa' from Southern New England and New York were sequenced for mitochondrial COI-5P and chloroplastic rbcL genes, showing distinct differences from Mediterranean specimens. As a result, a little-known species name, Spyridia americana Durant, was assigned to specimens collected from the northeastern coast of the United States.
Article
Plant Sciences
Joseph L. Richards, Gary W. Saunders, Jeffery R. Hughey, Paul W. Gabrielson
Summary: Partial rbcL sequences were obtained from type specimens of Lithophyllum coarctatum and L. gardineri. Despite morpho-anatomical similarities, phylogenetic analyses confirmed that both species belong in Porolithon. A novel epiphytic species, P. epiphyticum sp. nov., from Cocos-Keeling Islands was also identified.
Article
Plant Sciences
Viviana Pena, David Belanger, Patrick Gagnon, Joseph L. Richards, Line Le Gall, Jeffery R. Hughey, Gary W. Saunders, Sandra C. Lindstrom, Eli Rinde, Vivian Husa, Hartvig Christie, Stein Fredriksen, Jason M. Hall-Spencer, Robert S. Steneck, Kathryn M. Schoenrock, Janne Gitmark, Ellen Sofie Grefsrud, Marc B. Angles D'Auriac, Erwann Legrand, Jacques Grall, Thomas F. Mumford, Nicholas A. Kamenos, Paul W. Gabrielson
Summary: The study analyzed DNA sequences of Arctic and Subarctic coralline red algae, confirming the existence of four Lithothamnion species and correcting previous taxonomical errors based on morpho-anatomy. The importance of sequencing historical type specimens was demonstrated, and the distributions and ecology of these species were updated based on sequenced specimens.
EUROPEAN JOURNAL OF PHYCOLOGY
(2021)
Article
Plant Sciences
Craig W. Schneider, Margaret M. Cassidy, Gary W. Saunders
Summary: The newly discovered red alga Dasya sylviae sp. nov. was found at mesophotic depths of 60-90 m off Bermuda. Genetic sequences and morphological characteristics distinguish it as a distinct pseudodichotomous species within the genus Dasya.
EUROPEAN JOURNAL OF TAXONOMY
(2021)
Article
Plant Sciences
John M. Huisman, Gary W. Saunders
Summary: Molecular analyses have revealed discrepancies in Australian taxa previously classified as Plocamium cartilagineum with the species from its northern hemisphere type locality. After examining and designating a lectotype for Plocamium pusillum, it has been resurrected as a distinct species genetically and morphologically, differing from authentic P. cartilagineum.
CRYPTOGAMIE ALGOLOGIE
(2021)
Article
Plant Sciences
Thea R. Popolizio, Craig W. Schneider, Walter M. Jongbloed, Gary W. Saunders, Christopher E. Lane
Summary: In the last decade, molecular tools have revealed previously unrecognized taxa in Bermuda's marine flora, especially among the Rhodophyta. Misidentified species have been reclassified and many novel species have been discovered. The `Laurencia complex' has also been modified globally, with five of the eight recognized genera found in Bermuda. The study presents new species and revises the classification of existing ones using genetic sequencing.
CRYPTOGAMIE ALGOLOGIE
(2022)
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
Ecology
Marlene Elias, Matt Kandel, Stephanie Mansourian, Ruth Meinzen-Dick, Mary Crossland, Deepa Joshi, Juliet Kariuki, Lynn C. Lee, Pamela McElwee, Amrita Sen, Emily Sigman, Ruchika Singh, Emily M. Adamczyk, Thomas Addoah, Genevieve Agaba, Rahinatu S. Alare, Will Anderson, Indika Arulingam, SGiids Kung Vanessa Bellis, Regina Birner, Sanjiv De Silva, Mark Dubois, Marie Duraisami, Mike Featherstone, Bryce Gallant, Arunima Hakhu, Robyn Irvine, Esther Kiura, Christine Magaju, Cynthia McDougall, Gwiisihlgaa Daniel McNeill, Harini Nagendra, Tran Huu Nghi, Daniel K. Okamoto, Ana Maria Paez Valencia, Tim Pagella, Ondine Pontier, Miranda Post, Gary W. Saunders, Kate Schreckenberg, Karishma Shelar, Fergus Sinclair, Rajendra S. Gautam, Nathan B. Spindel, Hita Unnikrishnan, Gulxa Taaa Gaagii Ngaang Nadine Wilson, Leigh Winowiecki
Summary: The importance of considering human and social dimensions in ecosystem restoration is emphasized, with a set of ten people-centered rules proposed to achieve ecological and social goals. These rules provide actionable ways for stakeholders to center humans and social dimensions in restoration initiatives, aiming to generate fair and sustainable outcomes. The integration of socio-political issues throughout the restoration process is crucial for successful and impactful restoration efforts.
RESTORATION ECOLOGY
(2022)
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
Plant Sciences
Margaret M. Cassidy, Craig W. Schneider, Gary W. Saunders
Summary: Molecular studies of Dasya genus in Bermuda revealed two new species and reclassified known species. The study also uncovered the relationship between Dasya and Dasysiphonia.
JOURNAL OF PHYCOLOGY
(2022)
Article
Biodiversity Conservation
Gary W. Saunders, Cody M. Brooks
Summary: By screening DNA from 285 coralline crusts in Canada and adjacent waters, the distribution range of Porphyra corallicola was found to be far beyond previous knowledge. In addition, it was found that other species also exist only in the Conchocelis stage. The further development of this method will facilitate the study of Conchocelis stages in nature, greatly enhancing ecological knowledge of bangialean species.
Meeting Abstract
Plant Sciences
Viviana Pena, David Belanger, Patrick Gagnon, Joseph L. Richards, Line Le Gall, Jeffery R. Hughey, Gary W. Saunders, Sandra C. Lindstrom, Eli Rinde, Vivian Husa, Hartvig Christie, Stein Fredriksen, Jason M. Hall-Spencer, Robert S. Steneck, Kathryn M. Schoenrock, Janne Gitmark, Ellen Sofie Grefsrud, Marc B. Angles d'Auriac, Erwann Legrand, Jacques Grall, Thomas M. Mumford, Nicholas A. Kamenos, Paul W. Gabrielson
Article
Plant Sciences
Gerald T. Kraft, Gary W. Saunders
Summary: The Acrotylaceae, a red-algal family composed of six genera, lacks common habits and vegetative features among them, with cystocarps being the most unifying characteristic. Molecular studies reveal that the family consists of two subfamilies, Acrotylaceae and the newly proposed Clavicloniaceae. The South African genus Reinboldia, previously included in Acrotylaceae, is now considered questionable for inclusion in the family.
AUSTRALIAN SYSTEMATIC BOTANY
(2021)