-
Morphological and molecular assessment of Grateloupia (Halymeniales, Rhodophyta) from Egypt revealed a new introduced species in the Mediterranean Sea, Grateloupia gibbesii Phycologia (IF 2.276) Pub Date : 2021-01-22 Conxi Rodríguez-Prieto; Soha Hamdy Shabaka; Nihal Shams El-Din; Olivier De Clerck
ABSTRACT The Mediterranean Sea is a hotspot for introduced marine species, including seaweeds. Among red algae, Grateloupia, with no less than eight introduced species, occupies a prominent position. Here, we report a large foliose Grateloupia species collected in Eastern Harbour, Alexandria, Egypt, which had previously been reported as G. acuminata and G. doryphora. Comparison of rbcL gene sequences
-
Mind your methods: acidification degrades total nitrogen and stable isotopic values within calcified marine macroalgae Phycologia (IF 2.276) Pub Date : 2021-01-18 Nicholas S. Strait; Heather L. Spalding
ABSTRACT Nitrogen and carbon are commonly used to determine nutrient regimes and trophic structures within marine ecosystems. Macroalgae are convenient for assessing nutrient conditions via stable isotopes and tissue nutrient levels because of their ability to absorb and integrate ambient nutrients over extended time periods. Calcified macroalgae, such as Halimeda and Udotea spp, are common constituents
-
Ultrastructure of epithallial cells and trichocyte initials in Amphiroa (Corallinales, Rhodophyta), and possible systematic value of trichocyte development in corallines Phycologia (IF 2.276) Pub Date : 2021-01-15 Curt M. Pueschel
ABSTRACT To better understand the dynamics of the coralline algal thallus surface, scanning and transmission electron microscopy were used to examine the structure and development of epithallial cells and trichocyte initials in three species of Amphiroa. Epithallial cells possessed several distinctive organic wall layers. A densely fibrillar, moderately electron-dense layer completely surrounded each
-
Caulerpa wysorii sp. nov., a denuded Caulerpa (Chlorophyta) resembling C. sertularioides when ‘dressed’ Phycologia (IF 2.276) Pub Date : 2021-01-15 Thomas Sauvage; Michael J. Wynne; Stefano G.A. Draisma; Ileana Ortegón-Aznar; Luz Elena Mateo-Cid; A. Catalina Mendoza-González; Beatriz Martínez-Daranas; Suzanne Fredericq
ABSTRACT Routine DNA barcoding with the chloroplast gene tufA identified novel records of an unknown and denuded (i.e. lacking branchlets) Caulerpa species previously reported from the Florida Middle Grounds. tufA barcoding not only confirmed the matching molecular identity of this taxon with several newly collected denuded specimens from shallow habitats of the Yucatán shelf, but also with a set of
-
Contrasting patterns of population structure and reproduction strategies of three sympatric species of Cladophoraceae endemic to Lake Baikal Phycologia (IF 2.276) Pub Date : 2021-01-13 Sergio Díaz-Martínez; Christian Boedeker; Giuseppe C. Zuccarello
ABSTRACT The endemic Cladophoraceae of Lake Baikal are a group with high species richness, monophyly, and apparently recent speciation, making them ideal for the study of the genetic structure of an alga in this large freshwater environment. We analysed the population genetics of Chaetomorpha (= Ch.) moniliformis, Cladophora (= Cl.) compacta and Cl. kursanovii, using a set of eleven microsatellites
-
Roholtiella mixta sp. nov. (Nostocales, Cyanobacteria): morphology, molecular phylogeny, and carotenoid content Phycologia (IF 2.276) Pub Date : 2021-01-11 Shamil R. Abdullin; Vyacheslav Yu. Nikulin; Arthur Yu. Nikulin; Artem Yu. Manyakhin; Veronika B. Bagmet; Andrey R. Suprun; Andrey A. Gontcharov
ABSTRACT A Calothrix-like cyanobacterial strain was isolated from a sample collected from the entrance zone of Shumyaschiy Ponor cave, Chelyabinsk Region, South Urals, Russia. This isolate showed diagnostic features of the recently described genus Roholtiella, i.e. chains of arthrospores and thalli not tapering to a hair. Molecular analyses based on 16S rRNA gene, 16S–23S internal transcribed spacer
-
Arthrospira platensis (Cyanobacteria) – a potential biofactory for fluoromagnetic nanoiron production Phycologia (IF 2.276) Pub Date : 2021-01-11 Sreemanti Banerjee; Abhishek Bhattacharya; Piya Roychoudhury; Anjan K. Dasgupta; Moumita Dutta; Ruma Pal
ABSTRACT Bioconversion of Fe3+ to Fe0 followed by spindle shaped magneto-fluorescent nanoiron production has been investigated using Arthrospira platensis as a potential bio-reagent. The characteristic features, e.g. in situ localisation, magnetic and fluorescent properties of synthesised nanoparticles, were explored. Bioconversion occurred when healthy growing biomass of Arthrospira platensis was
-
Trentepohlia sp., a terrestrial chlorophyte growing on galvanised iron lamp posts Phycologia (IF 2.276) Pub Date : 2021-01-08 Raymond J. Ritchie; Muhammad Heemboo
ABSTRACT The common green alga Trentepohlia sp. was found growing as a biofilm on galvanised iron lamp posts where it was exposed to high zinc levels and periodic desiccation. Its sole water sources were rainfall and dewfall. Photosynthesis studies using PAM techniques showed that the alga was a shade-adapted species with a very low optimum irradiance (Eopt) of about 90 μmol photons m−2 s−1, and ETRmax
-
Tyge Christensen Prize 2019 Phycologia (IF 2.276) Pub Date : 2021-01-04
(2020). Tyge Christensen Prize 2019. Phycologia: Vol. 59, No. 6, pp. 463-463.
-
Can 2, 4-dichlorophenoxyacetic acid alter growth performance, biochemical composition, and fatty acid profile of the marine microalga Isochrysis galbana? Phycologia (IF 2.276) Pub Date : 2020-10-26 Nasim Sadat Hosseini Madani; Seyed Pezhman Hosseini Shekarabi; Mehdi Shamsaie Mehrgan; Nima Pourang
ABSTRACT The application of plant growth regulators is a new strategy for industrial cultivation of microalgae to enhance growth performance and synthesis of bio-products. In this study, changes in some growth indices, biochemical content, and fatty acid (FA) profile of Isochrysis galbana were investigated in response to 2, 4-dichlorophenoxyacetic acid (2, 4-D) at 0, 1, 2, 4 and 6 mg l−1. Based on
-
Taxonomic reassignment of Pseudohaptolina birgeri comb. nov. (Haptophyta) Phycologia (IF 2.276) Pub Date : 2020-10-30 Catherine Gérikas Ribeiro; Adriana Lopes dos Santos; Ian Probert; Daniel Vaulot; Bente Edvardsen
ABSTRACT The haptophyte genus Pseudohaptolina (formerly Chrysochromulina clade B1-3) currently harbours two species: Pseudohaptolina arctica and Pseudohaptolina sorokinii. In addition, Chrysochromulina birgeri is expected to belong to this genus due to its morphological similarity to P. sorokinii, but it has not yet been genetically characterised. A strain belonging to Pseudohaptolina was brought into
-
Gololobovia gen. nov. – a new genus from Lake Baikal with comments on pore occlusion in monoraphid diatoms Phycologia (IF 2.276) Pub Date : 2020-11-03 Maxim Kulikovskiy; Anton Glushchenko; Irina Kuznetsova; Sergei Genkal; John Patrick Kociolek
ABSTRACT A new diatom genus, Gololobovia gen. nov., is described from ancient Lake Baikal on the basis of light and scanning electron microscopy of its valves. The new genus has a single raphe per frustule and can be assigned to Achnanthidiaceae. Two species are described as new for science from Lake Baikal. These are Gololobovia mariae sp. nov. and Gololobovia baicalensis sp. nov. These species share
-
Morphology, genetics and toxin profile of Prorocentrum texanum (Dinophyceae) from Argentinian marine coastal waters Phycologia (IF 2.276) Pub Date : 2020-11-23 Inés Sunesen; Francisco Rodríguez Hernández; Delfina Aguiar Juárez; Jonás Adrián Tardivo Kubis; Andrea Susana Lavigne; Araceli Rossignoli; Pilar Riobó; Eugenia A. Sar
ABSTRACT Two strains of Prorocentrum texanum (LPCc020 and LPCc032) were established from coastal waters of the Province of Buenos Aires, Argentina. Field and cultured materials were examined using light and scanning electron microscopy, and the planktonic species Prorocentrum texanum, a known okadaic acid producer, was identified. We compared morphology, genetics and toxin profile of P. texanum based
-
Keep your friends close and your competitors closer: novel interspecies interaction in desert biological sand crusts Phycologia (IF 2.276) Pub Date : 2020-12-08 Isaac Kedem; Haim Treves; Gabriella Noble; Martin Hagemann; Omer Murik; Hagai Raanan; Nadav Oren; Mario Giordano; Aaron Kaplan
ABSTRACT The green alga Chlorella sp. and the filamentous cyanobacterium Leptolyngbya sp., regularly cope with various stressors including frequent hydration–desiccation cycles. When grown in axenic cultures, Chlorella sp. is unable to resurrect even after very slow desiccation unless desiccation takes place in the presence of Leptolyngbya sp. or a lysate thereof. When Chlorella sp. was provided with
-
Devaleraea titlyanova sp. nov. (Palmariaceae, Rhodophyta) from the Russian coast of the northwestern Pacific Ocean Phycologia (IF 2.276) Pub Date : 2020-12-02 Anna V. Skriptsova; Tatyana L. Kalita; Alexander A. Semenchenko; Svetlana Yu. Shibneva
ABSTRACT One species of the red algal genus Devaleraea, D. stenogona, shows remarkable phenotypic plasticity over its geographic range. We assumed this species to be a complex of morphologically close species. To resolve this issue, we sequenced the internal transcribed spacer (ITS) regions, including the 5.8S rDNA, rbcL, and 5′ end of the COI gene (COI-5′) of specimens of D. stenogona sensu lato from
-
Parmales (Bolidophyceae) assemblages in the subarctic Pacific Ocean during the mid-1960s Phycologia (IF 2.276) Pub Date : 2020-12-01 Kazuki Hoshina; Yuki Uezato; Richard W. Jordan
ABSTRACT A large collection of old membrane filters from the American cruises of the R/V Vema and R/V Robert D. Conrad has been recently curated and provides a unique opportunity to study microplankton distribution in the 1960s. Filters from the subarctic Pacific Ocean and Bering Sea collected in May–July 1964 and June–Aug 1966 were observed in detail for the first time using scanning electron microscopy
-
Circumscription of Lithophyllum racemus (Corallinales, Rhodophyta) from the western Mediterranean Sea reveals the species Lithophyllum pseudoracemus sp. nov. Phycologia (IF 2.276) Pub Date : 2020-10-22 Annalisa Caragnano; Graziella Rodondi; Daniela Basso; Viviana Peña; Line le Gall; Fabio Rindi
ABSTRACT Species of the genus Lithophyllum are important carbonate producers and bioconstructors. In recent years, molecular studies focusing on this genus have unravelled several striking cases of cryptic and pseudocryptic diversity. Lithophyllum racemus is a common non-geniculate coralline alga-forming rhodoliths in the northeastern Atlantic Ocean and the Mediterranean Sea. Molecular phylogenies
-
Gayliella nanaoensis sp. nov. (Ceramiaceae, Rhodophyta) from China Phycologia (IF 2.276) Pub Date : 2020-10-21 Tan Huaqiang; Wu Yinglin; Liu Wenhua; Li Ping
ABSTRACT Because morphological variation in Gayliella species is extensive, a molecular-assisted taxonomic approach is essential for accurate species identification. In China, six Gayliella species have been recorded, but no molecular-assisted identification has been used. In this study, we used detailed morphological analyses combined with rbcL and cox1 sequence analyses to identify Gayliella specimens
-
Gaps and challenges in the knowledge of algal biodiversity in Paraguay Phycologia (IF 2.276) Pub Date : 2020-10-20 Vitória Kalana Rosset; Elaine Cristina Rodrigues Bartozek; Richard Wilander Lambrecht; Marina Ramos Auricchio; Melissa Dos Santos; Cleto Kaveski Peres
ABSTRACT Tropical environments comprise some of the largest megadiverse centres on earth, and yet, even in the face of rapid biodiversity loss, a lack of knowledge of such areas prevails today. Paraguay is a landlocked, tropical country, which still holds enormous forested areas despite intense degradation. The country shows enormous potential algal biodiversity. We searched published records of algal
-
Cryopreservation of the parasitic and saprophytic life stage of the blastocladialean pathogen Paraphysoderma sedebokerense infecting the green algae Haematococcus pluvialis and Scenedesmus dimorphus Phycologia (IF 2.276) Pub Date : 2020-10-15 Martina Strittmatter; Cecilia Rad-Menéndez; Claire M. M. Gachon
ABSTRACT Host–pathogen interactions involving microalgae have attracted more and more interest over the past decade. In order to understand interactions between those two partners and as basis of each single experiment, biological material in the form of cultures is crucial. Whereas the establishment of such cultures can by itself be very difficult and time-consuming, their subsequent maintenance often
-
A new boring toxin producer – Perforafilum tunnelli gen. & sp. nov. (Oscillatoriales, Cyanobacteria) isolated from Laguna Madre, Texas, USA Phycologia (IF 2.276) Pub Date : 2020-10-02 Paul V. Zimba; Sergei Shalygin; I-Shuo Huang; Milica Momčilović; Hussain Abdulla
ABSTRACT The Laguna Madre-Tamaulipas is the world’s largest hypersaline lagoon and is equally located in south Texas, USA, and Tamaulipas, Mexico. Over 40% of its American surface area is covered by wind-tidal sand flats containing cyanobacteria as the major autotrophic component of the microbial community. A recent laboratory examination of these microbial mats revealed the presence of a boring, filamentous
-
Phylogeny and taxonomy of Planktosphaeria, Follicularia and Herndonia gen. nov. (Sphaeropleales, Chlorophyceae) based on ultrastructure and 18S rDNA analyses Phycologia (IF 2.276) Pub Date : 2020-07-28 Shin Watanabe
ABSTRACT The two genera Planktosphaeria (the type Pl. gelatinosa G.M.Smith) and Follicularia (the type F. paradoxalis Miller) have numerous chloroplast segments, each with a single pyrenoid. Autospore reproduction was described only in Planktosphaeria; whereas naked, biflagellate zoospores were known in Follicularia. The generic circumscription of Planktosphaeria was once changed to zoospore-producing
-
New observations on the sexual and asexual reproductive stages of Staurastrum gracile (Desmidiaceae, Zygnematophyceae) Phycologia (IF 2.276) Pub Date : 2020-08-18 Eva Calderón; Rosaluz Tavera
ABSTRACT Staurastrum gracile is a highly polymorphic species that overlaps morphologically with other species of the genus. The observation of some reproductive features, such as zygospore development, is necessary for correct identification of some Staurastrum species. This study describes the sexual and asexual reproduction of S. gracile in culture and emphasises the importance of characters observed
-
Phylogenetic reconstruction of diatoms using a seven-gene dataset, multiple outgroups, and morphological data for a total evidence approach Phycologia (IF 2.276) Pub Date : 2020-08-26 Linda K. Medlin; Yves Desdevises
ABSTRACT Medlin tested multiple outgroups with 18S rRNA dataset and found that haptophytes, ciliates, prasinophytes, and chlorophytes recovered monophyletic Coscinodiscophyceae, Mediophyceae, Bacillariophyceae (CMB) with strong BT (bootstrap) support. Theriot et al. added six plastid genes to the diatom dataset but with only one outgroup, Bolidomonas, and omitted most of the V4 region of that gene
-
Foliose species of New Zealand red algae: diversity in the genus Tsengia (Tsengiaceae, Halymeniales), including T. northlandica sp. nov. Phycologia (IF 2.276) Pub Date : 2020-09-02 Roberta D'Archino; Giuseppe C. Zuccarello
ABSTRACT Identification of foliose red algae is particularly problematic as many of the characters used, such as general overall habit, colour, and texture, are often dependent on environmental or developmental characteristics of the specimen in question. One foliose red algal genus that has received little attention and is quite common in parts of New Zealand is Tsengia. Collections of multiple foliose
-
Reassessment of misapplied names, Phymatolithon ferox and P. repandum (Hapalidiales, Corallinophycidae, Rhodophyta) in South Africa, based on DNA sequencing of type and recently collected material Phycologia (IF 2.276) Pub Date : 2020-08-21 Gavin W. Maneveldt; So Young Jeong; Tae Oh Cho; Jeffery R. Hughey; Paul W. Gabrielson
ABSTRACT Two of the four currently recognised species of Phymatolithon in South Africa are P. repandum (type locality: Half Moon Bay, Port Philip Bay, Victoria, Australia) and P. ferox (type locality: Natal, KwaZulu-Natal, South Africa). Partial rbcL sequences of the lectotype of P. repandum and the holotype of P. ferox demonstrate that the former is not present in South Africa and does not belong
-
On Acanthogonyaulax spinifera (Dinophyceae) Phycologia (IF 2.276) Pub Date : 2020-08-20 Consuelo Carbonell-Moore; Kenneth Neil Mertens
ABSTRACT The genus Acanthogonyaulax (Kofoid) H.W.Graham is a rarely observed tropical gonyaulacoid dinoflagellate, first documented at the end of the 19th century. It was initially described as a species of Ceratocorys F.Stein, then transferred to Gonyaulax Diesing, and finally to its own genus, Acanthogonyaulax. Discrepancies in the observations of its plate pattern were responsible for these changes
-
Book Review Phycologia (IF 2.276) Pub Date : 2020-08-26 Lawrence M. Liao
(2020). Book Review. Phycologia: Vol. 59, No. 5, pp. 460-462.
-
Gene expression stability of candidate reference genes under different culture conditions for quantitative PCR in the raphidophyte Chattonella marina Phycologia (IF 2.276) Pub Date : 2020-09-29 Koki Mukai; Yohei Shimasaki; Xuchun Qiu; Yoko Kato-Unoki; Kun Chen; Yuki Takai; Mst Ruhina Margia Khanam; Abrianna Elke Chairil; Yuji Oshima
ABSTRACT Selection of suitable reference genes is important for relative quantification in quantitative PCR (qPCR). We investigated the expression stability of candidate reference genes for qPCR in the raphidophyte Chattonella marina at different irradiance, temperature, and oxidative stress conditions, and in different growth phases. Nine candidate reference genes (18S rRNA, cytochrome c oxidase subunit
-
Influence of phosphate on Nostochopsis-like morphology (Cyanobacteria) Phycologia (IF 2.276) Pub Date : 2020-09-29 Pilar Mateo; M. Ángeles Muñoz-Martín; Esther Berrendero; Elvira Perona; Brian A. Whitton
ABSTRACT Two cyanobacterial strains developed morphology characteristic of Nostochopsis, i.e. with many heterocysts in side branches when grown in low phosphate medium. When grown in high phosphate medium both strains developed morphology characteristic of Fischerella muscicola. The converse did not occur with two culture strains classified as Fischerella in that neither developed Nostochopsis morphology
-
Morphology and phylogeny of Thecadinium ovatum (Dinophyceae) from the Pacific coast of Russia Phycologia (IF 2.276) Pub Date : 2020-09-28 Marina S. Selina; Kseniya V. Efimova
ABSTRACT Thecadinium ovatum is one of the four species of Thecadinium sensu lato which has no apical pore, but has a ventral pore on the first apical plate, an unusual ‘multi-pimple-plate’ in the precingular series, and an antapical plate with several spines. Its original thecal plate formula was 3ʹ 6ʹʹ 6c 5s? 5ʹʹʹ 1ʹʹʹʹ. Morphological examination of cells from the Sea of Japan showed that T. ovatum
-
Effects of temperature, salinity, and light intensity on the growth of the diatom Rhizosolenia setigera in Japan Phycologia (IF 2.276) Pub Date : 2020-09-28 Takamichi Yoshimatsu; Haruo Yamaguchi; Akira Iimura; Tomohiro Nishimura; Takashi Kadono; Masao Adachi
ABSTRACT Some species of Rhizosolenia form intense blooms, known as red tides, in Japanese coastal waters. In Tokyo Bay, Rhizosolenia setigera frequently causes red tides and sometimes causes discolouration of Pyropia in nori farms. However, little is known about the growth characteristics of R. setigera in Tokyo Bay. We evaluated the effects of temperature, salinity, and irradiance on the growth of
-
Oncosaccus: a rare green alga endemic to China belongs to Chaetopeltidales (Chlorophyceae, Chlorophyta) Phycologia (IF 2.276) Pub Date : 2020-09-23 Benwen Liu; Huan Zhu; Zhijuan Zhao; Qian Xiong; Guoxiang Liu; Zhengyu Hu
The green algal genus Oncosaccus, endemic to China, has previously been classified in Chlamydomondales (Chlorophyceae). In the present study, two green algal specimens from west China were identified as Oncosaccus tetrasporoides due to their unique colonial form with numerous cells embedded in a thick gelatinous envelope without perforations and pseudocilia. Molecular data from two nuclear loci (18S
-
Cladocopium infistulum sp. nov. (Dinophyceae), a thermally tolerant dinoflagellate symbiotic with giant clams from the western Pacific Ocean Phycologia (IF 2.276) Pub Date : 2020-09-21 Sung Yeon Lee; Hae Jin Jeong; Todd C. Lajeunesse
ABSTRACT Members of the genus Cladocopium are the most ecologically dominant and geographically widespread group of mutualistic dinoflagellates. The addition of species descriptions to this newly erected genus should stimulate scientific investigations and communication about the biology of these important symbionts. Here we combine morphology and genetic evidence with ecology to formally describe
-
Genotypic and phylogenetic diversity of new isolates of terrestrial Xanthophyceae (Stramenopiles) from maritime sandy habitats Phycologia (IF 2.276) Pub Date : 2020-09-03 Nataliya Rybalka; Tatiana Mikhailyuk; Tatyana Darienko; Stefan Dultz; Matthias Blanke; Thomas Friedl
ABSTRACT Xanthophyceae (Stramenopiles) are common microalgae in soil habitats, but not commonly known from maritime sandy habitats. Here we studied the genetic diversity of nine new isolates of Xanthophyceae from coastal habitats using two chloroplast-encoded markers. The isolates exhibited only three morphotypes. The sequence comparisons uncovered a respectable phylogenetic diversity, including novel
-
Reassignment of some South African species to Chamberlainium, with a comment about the recognition of families of Corallinales (Rhodophyta) Phycologia (IF 2.276) Pub Date : 2020-08-25 Courtney A. Puckree-Padua; Allison Haywood; Paul W. Gabrielson; Gavin W. Maneveldt
ABSTRACT Using an integrated taxonomic approach, DNA sequencing of field-collected and historical type specimens, as well as morpho-anatomical characters and species’ ecology and biogeography, we reassessed the single-most ecologically important non-geniculate coralline algal genus, Spongites, in South Africa. DNA sequences (psbA, rbcL) from type and recently collected specimens formed well-supported
-
The identity of Eucheuma perplexum (Solieriaceae, Gigartinales) and its distinction from Eucheuma serra as exemplified by a proposed new epitype Phycologia (IF 2.276) Pub Date : 2020-08-19 Richard V. Dumilag; Showe-Mei Lin; Giuseppe C. Zuccarello; Gerald T. Kraft
ABSTRACT Eucheuma perplexum is based on specimens from Patotsu, Taiwan. This species is morphologically difficult to distinguish from other eucheumatoids that exhibit a broad range of habit forms, particularly Betaphycus gelatinus, Eucheuma denticulatum, and E. serra. Here, the Philippine and topotype specimens of E. perplexum have been examined, their distinguishing morphological features highlighted
-
New observations on the sexual and asexual reproductive stages of Staurastrum gracile (Desmidiaceae, Zygnematophyceae) Phycologia (IF 2.276) Pub Date : 2020-08-18 Eva Calderón; Rosaluz Tavera
Staurastrum gracile is a highly polymorphic species that overlaps morphologically with other species of the genus. The observation of some reproductive features, such as zygospore development, is necessary for correct identification of some Staurastrum species. This study describes the sexual and asexual reproduction of S. gracile in culture and emphasises the importance of characters observed in the
-
Molecular phylogeny and ultrastructure of two novel parasitic dinoflagellates, Haplozoon gracile sp. nov. and H. pugnus sp. nov. Phycologia (IF 2.276) Pub Date : 2020-06-08 Mana Yamamoto; Kevin C. Wakeman; Shinri Tomioka; Takeo Horiguchi
(2020). Molecular phylogeny and ultrastructure of two novel parasitic dinoflagellates, Haplozoon gracile sp. nov. and H. pugnus sp. nov.. Phycologia: Vol. 59, No. 4, pp. 305-319.
-
Influence of ecological factors on soil algae in different types of mountain tundra and sparse forests in the Northern Urals Phycologia (IF 2.276) Pub Date : 2020-05-21 I.V. Novakovskaya; Y.A. Dubrovskiy; E.N. Patova; A.B. Novakovskiy; I.N. Sterlyagova
We studied how ecological factors affect species composition and structure of soil algal assemblages in different types of mountain tundra and sparse forests in the Northern Urals. Soil moisture, pH, nitrogen content and amount of solar radiation were determined using Ellenberg indicator values from phytoindicators. Species identification of soil algae was made using light microscopy following algal
-
Molecular phylogeny and biogeography of Ecklonia spp. (Laminariales, Phaeophyceae) in Japan revealed taxonomic revision of E. kurome and E. stolonifera Phycologia (IF 2.276) Pub Date : 2020-05-26 Shingo Akita; Kazuki Hashimoto; Takeaki Hanyuda; Hiroshi Kawai
(2020). Molecular phylogeny and biogeography of Ecklonia spp. (Laminariales, Phaeophyceae) in Japan revealed taxonomic revision of E. kurome and E. stolonifera. Phycologia: Vol. 59, No. 4, pp. 330-339.
-
Molecular markers obtained from draft genomic sequence data characterise an isolate of Oedogonium (Chlorophyceae) used for biomass applications Phycologia (IF 2.276) Pub Date : 2020-05-29 Linda E. Graham; Michael J. Piotrowski; James M. Graham; Anchittha Satjarak
Local isolates of the species-rich, fast-growing chlorophyte genus Oedogonium have been employed in outdoor biomass cultivation for industrial applications such as wastewater remediation, but such isolates may not express structural traits needed for definitive species identification by microscopy alone. We used maximum likelihood and Bayesian phylogenetic methods to evaluate molecular marker gene
-
Rhodachlya westii sp. nov. (Rhodachlyales, Rhodophyta), a new species from Brazil, revealed by an integrative taxonomic approach Phycologia (IF 2.276) Pub Date : 2020-06-05 Luanda Pereira Soares; Silvia M. P. de Beauclair Guimarães; Mutue Toyota Fujii; Yocie Yoneshigue-Valentin; Maria Gardênia Sousa Batista; Nair S. Yokoya
A small red alga was isolated into culture from rhodoliths collected on the Piauí coast, northeastern Brazil. Molecular data from the plastid-encoded rbcL gene, combined with morphological and ultrastructural evidence, demonstrated that it belongs to the genus Rhodachlya and supports the proposal of a new species, R. westii. The new species was characterised by basal and erect uniseriate filaments
-
Microsatellite design for species delimitation and insights into ploidy for the Lake Baikal Cladophoraceae species flock Phycologia (IF 2.276) Pub Date : 2020-06-30 Sergio Díaz Martínez; Christian Boedeker; Giuseppe C. Zuccarello
Ancient lakes are centres of adaptive radiation and speciation. The Cladophoraceae endemic to ancient Lake Baikal is a morphologically diverse group nested within Rhizoclonium that may represent a case of sympatric speciation. Recent research using ribosomal DNA markers indicates that these taxa form a monophyletic group but was not able to resolve boundaries between all of the investigated morphospecies
-
Genetic data support reproductively isolated species in the endemic Cladophoraceae (Chlorophyta) of Lake Baikal, Russia Phycologia (IF 2.276) Pub Date : 2020-07-02 Sergio Díaz Martínez; Christian Boedeker; Giuseppe C. Zuccarello
(2020). Genetic data support reproductively isolated species in the endemic Cladophoraceae (Chlorophyta) of Lake Baikal, Russia. Phycologia: Vol. 59, No. 4, pp. 365-374.
-
Effect of light and temperature on photosynthesis of a cultivated brown alga, Saccharina sculpera (Laminariales), from Japan Phycologia (IF 2.276) Pub Date : 2020-07-02 Yoichi Sato; Jumpei Kozono; Gregory N. Nishihara; Ryuta Terada
Understanding the physiological responses of kelp to environmental parameters is essential for the conservation of natural kelp beds and increased cultivation yield. We investigated the effects of photosynthetically active radiation (PAR) and temperature on photosynthesis of a subarctic edible brown alga, Saccharina sculpera (Laminariales), using pulse amplitude modulation (PAM)–chlorophyll fluorometry
-
Phylogeny and taxonomy of Planktosphaeria, Follicularia and Herndonia gen. nov. (Sphaeropleales, Chlorophyceae) based on ultrastructure and 18S rDNA analyses Phycologia (IF 2.276) Pub Date : 2020-07-28 Shin Watanabe
The two genera Planktosphaeria (the type Pl. gelatinosa G.M.Smith) and Follicularia (the type F. paradoxalis Miller) have numerous chloroplast segments, each with a single pyrenoid. Autospore reproduction was described only in Planktosphaeria; whereas naked, biflagellate zoospores were known in Follicularia. The generic circumscription of Planktosphaeria was once changed to zoospore-producing forms
-
Morphology, ultrastructure, and molecular phylogeny of the unarmoured dinoflagellate Kirithra sigma sp. nov. (Ceratoperidiniaceae, Dinophyceae) Phycologia (IF 2.276) Pub Date : 2020-07-16 Zhangxi Hu; Zhun Li; Yunyan Deng; Mitsunori Iwataki; Zhaohe Luo; Jinxiu Wang; Yuanyuan Sun; Zengxia Zhao; Haifeng Gu; Hyeon Ho Shin; Ying Zhong Tang
ABSTRACT A Gymnodinium-like dinoflagellate, Kirithra sigma sp. nov., was isolated from Jiaozhou Bay, China, and the southern coast of Korea, and examined by light, scanning, and transmission electron microscopy. Pigment composition and nuclear-encoded partial large subunit ribosomal RNA (LSU rRNA) gene were determined. Cells were oval-shaped (26.4‒36.4 μm long and 17.7‒27.2 μm wide), with a conical
-
Effects of increased pH and inorganic carbon on growth and photosynthesis in the macroalga Gracilaria lemaneiformis (Gigartinales, Rhodophyta) Phycologia (IF 2.276) Pub Date : 2020-04-24 Longle Wang; Heng Jiang; Dinghui Zou; Changpeng Ye
The marine red macroalga Gracilaria lemaneiformis usually experiences a changing carbonate system during mariculture. Thalli of G. lemaneiformis collected from Nanao Island, Shantou, China, were cultured in six treatments, with two inorganic carbon (Ci) levels (ambient-Ci, AC; elevated-Ci, EC) and three pH levels (8.2, 9.0, and 9.4), to examine the influence of increased Ci concentrations and high
-
A comparative study of Sargassum species from the Yucatan Peninsula coast: morphological and chemical characterisation Phycologia (IF 2.276) Pub Date : 2020-05-01 Luis Alberto Rosado-Espinosa; Yolanda Freile-Pelegrín; Emanuel Hernández-Nuñez; Daniel Robledo
Several species of Sargassum have been reported from the Yucatan peninsula coast, many of which end up as beach cast material, accumulating on the coast during colder months. The phenotypic plasticity of Sargassum makes specimen identification difficult. Two approaches were used in the current study to corroborate identification of the most abundant species: traditional taxonomic characters, and chemical
-
Antioxidant properties of different strains of Kappaphycus alvarezii (Rhodophyta) farmed on the Brazilian coast Phycologia (IF 2.276) Pub Date : 2020-05-13 Patrícia G. Araújo; Allyson E. Nardelli; Mutue T. Fujii; Fungyi Chow
Kappaphycus alvarezii is one of the most farmed algae globally. It is used almost exclusively for the carrageenan industry, although there is increasing interest in its biotechnological application as a natural product with biological properties. This cultivated species produces different strains with distinct chemical and physiological properties. Despite this, K. alvarezii has been marketed as a
-
Correction Phycologia (IF 2.276) Pub Date : 2020-04-21
(2020). Correction. Phycologia: Vol. 59, No. 3, pp. 280-280.
-
Molecular markers obtained from draft genomic sequence data characterise an isolate of Oedogonium (Chlorophyceae) used for biomass applications Phycologia (IF 2.276) Pub Date : 2020-05-29 Linda E. Graham; Michael J. Piotrowski; James M. Graham; Anchittha Satjarak
Local isolates of the species-rich, fast-growing chlorophyte genus Oedogonium have been employed in outdoor biomass cultivation for industrial applications such as wastewater remediation, but such isolates may not express structural traits needed for definitive species identification by microscopy alone. We used maximum likelihood and Bayesian phylogenetic methods to evaluate molecular marker gene
-
Molecular and morphological characterisation of Melanothamnus testudinis sp. nov. (Rhodophyta, Rhodomelaceae) and its distinction from Polysiphonia carettia Phycologia (IF 2.276) Pub Date : 2020-05-15 Donatella Serio; Giovanni Furnari; Isabella Moro; Katia Sciuto
(2020). Molecular and morphological characterisation of Melanothamnus testudinis sp. nov. (Rhodophyta, Rhodomelaceae) and its distinction from Polysiphonia carettia. Phycologia: Vol. 59, No. 4, pp. 281-291.
-
Diatoms on sea turtles and floating debris in the Persian Gulf (Western Asia) Phycologia (IF 2.276) Pub Date : 2020-05-15 Mahtab Azari; Yas Farjad; Ali Nasrolahi; Mario De Stefano; Maryam Ehsanpour; Sergey Dobrestov; Roksana Majewska
(2020). Diatoms on sea turtles and floating debris in the Persian Gulf (Western Asia) Phycologia: Vol. 59, No. 4, pp. 292-304.
-
List of reviewers - 2019 Phycologia (IF 2.276) Pub Date : 2020-03-10 None None
(2020). List of reviewers - 2019. Phycologia: Vol. 59, No. 2, pp. 1-2.
-
Two new species of Solieriaceae (Rhodophyta, Gigartinales) from the euphotic and mesophotic zones off Bermuda, Meristotheca odontoloma and Tepoztequiella muriamans Phycologia (IF 2.276) Pub Date : 2020-02-21 Craig W. Schneider; Elias S. Peterson; Gary W. Saunders
Using mitochondrial COI-5P and plastid rbcL sequences, as well as morphological characteristics, two new species of Solieriaceae are added to the flora of Bermuda. Specimens collected over the past two decades representing those distributed in the early exsiccata, Phycotheca boreali-americana as Eucheuma gelidium (= Meristotheca gelidium) are shown to be a unique species of Meristotheca, M. odontoloma
-
Study of the phylogeny and distribution of Pterocladiella (Pterocladiaceae, Rhodophyta) from China Phycologia (IF 2.276) Pub Date : 2020-02-24 Xulei Wang; Shuheng Yan; Yongqiang Wang; Zhongmin Sun; Bangmei Xia; Guangce Wang
In the current study, 334 specimens of Pterocladiella from China representing historical herbarium specimens and recent field collections were re-examined based upon morphological and molecular data analyses. Both datasets revealed the presence of P. beachiae, P. capillacea, P. caerulescens, and P. musciformis. Of these species, P. beachiae and P. musciformis were new records for China. Pterocladiella
-
Plastid-encoded gene comparison reveals usefulness of atpB, psaA, and rbcL for identification and phylogeny of plastid-containing cryptophyte clades Phycologia (IF 2.276) Pub Date : 2020-02-06 Eun Chan Yang; Jae Hoon Noh; Sung Kim; Dong Han Choi
Cryptophytes are a ubiquitous algal group and are important primary producers in aquatic ecosystems. Identification of lineages within the group is difficult because of their simple morphology and they are often enumerated at the class level in ecological research. Despite the increasing number of molecular probes used for identification of microorganisms, rRNA genes (i.e. nuclear 18S, ITS, and 28S
-
Reinvestigation of Ostreopsis mascarenensis Quod (Dinophyceae, Gonyaulacales) from Réunion Island (SW Indian Ocean): molecular phylogeny and emended description Phycologia (IF 2.276) Pub Date : 2020-02-05 Nicolas Chomérat; Gwenaël Bilien; Alain Couté; Jean-Pascal Quod
Ostreopsis mascarenensis is a toxic dinoflagellate described from the Indian Ocean based only on morphology, without molecular data. Morphological features of Ostreopsis have poor taxonomic value, and the addition of genetic data would ensure correct species identification. The present study reinvestigated field samples from Réunion Island and the western Indian Ocean to validate morphological and
Contents have been reproduced by permission of the publishers.