abstract：:The earliest known diatom fossils with well-preserved siliceous frustules are from Lower Cretaceous neritic marine deposits in Antarctica. In this study, we analyzed the cell wall structure to establish whether their cell and life cycles were similar to modern forms. At least two filamentous species (Basilicostephanus...

journal_title：Journal of phycology

authors： Jewson DH,Harwood DM

更新日期：2017-06-01 00:00:00

abstract：:Gene duplication is an important evolutionary process that allows duplicate functions to diverge, or, in some cases, allows for new functional gains. However, in contrast to the nuclear genome, gene duplications within the chloroplast are extremely rare. Here, we present the chloroplast genome of the photosynthetic pr...

journal_title：Journal of phycology

authors： Bennett MS,Shiu SH,Triemer RE

更新日期：2017-06-01 00:00:00

abstract：:Exopolymer particles are found throughout the ocean and play a significant biogeochemical role in carbon cycling. Transparent exopolymer particles (TEP) are composed of acid polysaccharides, and Coomassie staining particles (CSP) are proteins. TEPs have been extensively studied in the ocean, while CSP have been largel...

journal_title：Journal of phycology

authors： Thornton DCO,Chen J

更新日期：2017-04-01 00:00:00

abstract：:Prasinophytes form a paraphyletic assemblage of early diverging green algae, which have the potential to reveal the traits of the last common ancestor of the main two green lineages: (i) chlorophyte algae and (ii) streptophyte algae. Understanding the genetic composition of prasinophyte algae is fundamental to underst...

journal_title：Journal of phycology

authors： Satjarak A,Graham LE

更新日期：2017-04-01 00:00:00

abstract：:Flow cytometry provides a tool to physically sort single algal cells in order to obtain clonal cultures. During sorting, cells are submitted to physical stress factors such as high fluidic pressure, exposure to the laser beam, electrostatic charges, deflection through high voltage fields, and collisions with container...

journal_title：Journal of phycology

authors： Marie D,Le Gall F,Edern R,Gourvil P,Vaulot D

更新日期：2017-04-01 00:00:00

abstract：:With the fluorescent stain Nile Red (NR), phytoplankton lipid accumulation can be monitored quickly and in situ. In the light of recent results in phytoplankton diversity research, there is also a need for cell- and species-specific lipid measurement techniques. The objective of this work was to investigate whether ce...

journal_title：Journal of phycology

authors： Natunen K,Seppälä J,Koivula RJ,Pellinen J

更新日期：2017-04-01 00:00:00

abstract：:The presence of the benthic dinophysoid dinoflagellate Sinophysis canaliculata has been reported in the Canary Islands (eastern central Atlantic) in live field observations and on fixed macroalgal samples from intertidal ponds (26 sampling sites from El Hierro, Tenerife, Gran Canaria, Fuerteventura and Lanzarote islan...

journal_title：Journal of phycology

authors： García-Portela M,Riobó P,Rodríguez F

更新日期：2017-04-01 00:00:00

abstract：:Cyanobacteria occupy many niches within terrestrial, planktonic, and benthic habitats. The diversity of habitats colonized, similarity of morphology, and phenotypic plasticity all contribute to the difficulty of cyanobacterial identification. An unknown marine filamentous cyanobacterium was isolated from an aquatic an...

journal_title：Journal of phycology

authors： Zimba PV,Huang IS,Foley JE,Linton EW

更新日期：2017-02-01 00:00:00

abstract：:New strains of a wall-less unicellular volvocalean flagellate were isolated from a freshwater environment in Japan. Observations of the alga, described here as Hapalochloris nozakii Nakada, gen. et sp. nov., were made using light, fluorescence, and electron microscopy. Each vegetative cell had two flagella, four contr...

journal_title：Journal of phycology

authors： Nakada T,Tomita M

更新日期：2017-02-01 00:00:00

abstract：:Telomeres generally consist of short repeats of minisatellite DNA sequences and are useful in chromosome identification and karyotype analysis. To date, telomeres have not been characterized in the economically important brown seaweed Saccharina japonica, thus its full cytogenetic research and genetic breeding potenti...

journal_title：Journal of phycology

authors： Yang QF,Liu L,Liu Y,Zhou ZG

更新日期：2017-02-01 00:00:00

abstract：:Identification of horizontal gene transfers (HGTs) has primarily relied on phylogenetic tree based methods, which require a rich sampling of sequenced genomes to ensure a reliable inference. Because the success of phylogenetic approaches depends on the breadth and depth of the database, researchers usually apply strin...

journal_title：Journal of phycology

authors： Pandey RS,Saxena G,Bhattacharya D,Qiu H,Azad RK

更新日期：2017-02-01 00:00:00

abstract：:In the Monterey Bay region of central California, the giant kelp Macrocystis pyrifera experiences broad fluctuations in wave forces, temperature, light availability, nutrient availability, and seawater carbonate chemistry, all of which may impact their productivity. In particular, current velocities and light intensit...

journal_title：Journal of phycology

authors： Drobnitch ST,Nickols K,Edwards M

更新日期：2017-02-01 00:00:00

abstract：:Dispersal on floating seaweeds depends on availability, viability, and trajectories of the rafts. In the southern hemisphere, the bull kelp Durvillaea antarctica is one of the most common floating seaweeds, but phylogeographic studies had shown low connectivity between populations from continental Chile, which could b...

journal_title：Journal of phycology

authors： López BA,Macaya EC,Tala F,Tellier F,Thiel M

更新日期：2017-02-01 00:00:00

abstract：:In this study, we highlight the effects of methyl jasmonate (MeJa) on cystocarp development in the red macroscopic alga Grateloupia imbricata. In G. imbricata, jasmonate release is related to the reproductive state, as fertile thalli (i.e., those that have cystocarps) released significant amounts of this volatile comp...

journal_title：Journal of phycology

authors： Pilar GJ,Olegario BR,Rafael RR

更新日期：2016-12-01 00:00:00

abstract：:The North Sea-Baltic Sea transition zone constitutes a boundary area for the kelp species Saccharina latissima due to a strong salinity gradient operating in the area. Furthermore, the existence of S. latissima there, along Danish waters, is fairly patchy as hard bottom is scarce. In this study, patterns of genetic di...

journal_title：Journal of phycology

authors： Møller Nielsen M,Paulino C,Neiva J,Krause-Jensen D,Bruhn A,Serrão EA

更新日期：2016-08-01 00:00:00

abstract：:Species diversity within the genus Osmundea in the Macaronesian region was explored by conducting a comprehensive sampling in the Azores, the Canary, and the Madeira archipelagos. Toward identification, all specimens were first observed alive to verify the absence of corps en cerise, a diagnostic character for the gen...

journal_title：Journal of phycology

authors： Machín-Sánchez M,Rousseau F,Le Gall L,Cassano V,Neto AI,Sentíes A,T Fujii M,Gil-Rodríguez MC

更新日期：2016-08-01 00:00:00

abstract：:Following exposure to long-wavelength ultraviolet radiation (UVA), some cyanobacteria produce the indole-alkaloid sunscreen scytonemin. The genomic region associated with scytonemin biosynthesis in the cyanobacterium Nostoc punctiforme includes 18 cotranscribed genes. A two-component regulatory system (Npun_F1277/Npun...

journal_title：Journal of phycology

authors： Naurin S,Bennett J,Videau P,Philmus B,Soule T

更新日期：2016-08-01 00:00:00

abstract：:Global climate change is expected to alter the polar bioregions faster than any other marine environment. This study assesses the biodiversity of seaweeds and associated eukaryotic pathogens of an established study site in northern Baffin Island (72° N), providing a baseline inventory for future work assessing impacts...

journal_title：Journal of phycology

authors： Küpper FC,Peters AF,Shewring DM,Sayer MD,Mystikou A,Brown H,Azzopardi E,Dargent O,Strittmatter M,Brennan D,Asensi AO,van West P,Wilce RT

更新日期：2016-08-01 00:00:00

abstract：:Historically, the genus Calothrix included all noncolonial, tapered, heterocytous filaments within the cyanobacteria. However, recent molecular phylogenies show that "Calothrix" defined in this sense represents five distinct clades. The type species of Calothrix is marine, with solitary basal heterocytes, no akinetes,...

journal_title：Journal of phycology

authors： Berrendero Gómez E,Johansen JR,Kaštovský J,Bohunická M,Čapková K

更新日期：2016-08-01 00:00:00

abstract：:Polytomella is a genus of colorless green algae in the Reinhardtinia clade of the Chlamydomonadales, which has proven useful for a broad range of studies particularly those exploring the evolutionary loss of photosynthesis and mitochondrial genomics/biochemistry. Although 13 Polytomella strain accessions are currently...

journal_title：Journal of phycology

authors： MacDonald SM,Lee RW

更新日期：2016-08-01 00:00:00

abstract：:Inorganic nitrogen has been identified as the major growth-limiting nutritional factor affecting Gracilaria gracilis populations in South Africa. Although the physiological mechanisms implemented by G. gracilis for adaption to low nitrogen environments have been investigated, little is known about the molecular mechan...

journal_title：Journal of phycology

authors： Naidoo RK,Rafudeen MS,Coyne VE

更新日期：2016-06-01 00:00:00

abstract：:Riboswitches are regulatory elements in messenger RNA to which specific ligands can bind directly in the absence of proteins. Ligand binding alters the mRNA secondary structure, thereby affecting expression of the encoded protein. Riboswitches are widespread in prokaryotes, with over 20 different effector ligands know...

journal_title：Journal of phycology

authors： Nguyen GT,Scaife MA,Helliwell KE,Smith AG

更新日期：2016-06-01 00:00:00

abstract：:It is envisioned that mass algal cultivation for commercial biofuels production will entail the use of large raceway pond systems, which typically have shade-limited photosynthetic growth within depths of 20-30 cm. The attenuation of light and spectral qualities of red, green, and blue wavelengths in a 20-cm water col...

journal_title：Journal of phycology

authors： Hewes CD

更新日期：2016-04-01 00:00:00

abstract：:The study of the microalgal growth kinetics is an indispensable tool in all fields of phycology. Knowing the optimal nutrient concentration is an important issue that will help to develop efficient growth systems for these microorganisms. Although nitrogen and phosphorus are well studied for this purpose, sulfur seems...

journal_title：Journal of phycology

authors： Mera R,Torres E,Abalde J

更新日期：2016-02-01 00:00:00

abstract：:Based upon COI-5P, LSU rDNA, and rbcL sequence data and morphological characteristics, six new members of the noncalcified crustose genus of red algae Ethelia are described in a new family, Etheliaceae (Gigartinales), sister to the recently described Ptilocladiopsidaceae. The novel species are described from subtropic...

journal_title：Journal of phycology

authors： Dixon KR,Saunders GW,Schneider CW,Lane CE

更新日期：2015-12-01 00:00:00

abstract：:Members of the morphologically unusual cyanobacterial family Gomontiellaceae were studied using a polyphasic approach. Cultured strains of Hormoscilla pringsheimii, Starria zimbabweënsis, Crinalium magnum, and Crinalium epipsammum were thoroughly examined, and the type specimen of the family, Gomontiella subtubulosa, ...

journal_title：Journal of phycology

authors： Bohunická M,Mareš J,Hrouzek P,Urajová P,Lukeš M,Šmarda J,Komárek J,Gaysina LA,Strunecký O

更新日期：2015-12-01 00:00:00

abstract：:Phospholipase D (PLD) participates in the formation of phosphatidic acid, a precursor in glycerolipid biosynthesis and a second messenger. PLDs are part of a superfamily of proteins that hydrolyze phosphodiesters and share a catalytic motif, HxKxxxxD, and hence a mechanism of action. Although HKD-PLDs have been thorou...

journal_title：Journal of phycology

authors： Beligni MV,Bagnato C,Prados MB,Bondino H,Laxalt AM,Munnik T,Ten Have A

更新日期：2015-10-01 00:00:00

abstract：:Large-scale seaweed cultivation has been instrumental in globalizing the seaweed industry since the 1950s. The domestication of seaweed cultivars (begun in the 1940s) ended the reliance on natural cycles of raw material availability for some species, with efforts driven by consumer demands that far exceeded the availa...

journal_title：Journal of phycology

authors： Hafting JT,Craigie JS,Stengel DB,Loureiro RR,Buschmann AH,Yarish C,Edwards MD,Critchley AT

更新日期：2015-10-01 00:00:00

abstract：:Thermoacidophilic cyanidia (Cyanidiales) are the primary photosynthetic eukaryotes in volcanic areas. These red algae also serve as important model organisms for studying life in extreme habitats. The global biodiversity and community structure of Cyanidiales remain unclear despite previous sampling efforts. Here, we ...

journal_title：Journal of phycology

authors： Hsieh CJ,Zhan SH,Lin Y,Tang SL,Liu SL

更新日期：2015-08-01 00:00:00

abstract：:Here, we established the cyst-motile stage relation-ship for Spiniferites pachydermus through incubation of cysts with a characteristically microreticulate/perforate surface isolated from Izmir Bay in the eastern Aegean Sea of the eastern Mediterranean. The morphology of the motile stage was similar to Gonyaulax spini...

journal_title：Journal of phycology

authors： Mertens KN,Aydin H,Uzar S,Takano Y,Yamaguchi A,Matsuoka K

更新日期：2015-06-01 00:00:00

abstract：:Reactive oxygen species (ROS) produced by an oxidative burst are an important component of the wound response in algae, vascular plants, and animals. In all taxa, ROS production is usually attributed solely to a defense-related enzyme like NADPH-oxidase (Nox). However, here we show that the initial, wound-induced oxid...

journal_title：Journal of phycology

authors： McDowell RE,Amsler MO,Li Q,Lancaster JR Jr,Amsler CD

更新日期：2015-06-01 00:00:00

abstract：:Gracilariaceae are mostly pantropical red algae and include ~230 species in seven genera. Infrafamilial classification of the group has long been based on reproductive characters, but previous phylogenies have shown that traditionally circumscribed groups are not monophyletic. We performed phylogenetic analyses using ...

journal_title：Journal of phycology

authors： Lyra Gde M,Costa Eda S,de Jesus PB,de Matos JC,Caires TA,Oliveira MC,Oliveira EC,Xi Z,Nunes JM,Davis CC

更新日期：2015-04-01 00:00:00

abstract：:Adenosine 5'-triphosphate (ATP) is a versatile extracellular signal along the tree of life, whereas cAMP plays a major role in vertebrates as an intracellular messenger for hormones, transmitters, tastants, and odorants. Since red algal spore coalescence may be considered analogous to the congregation process of socia...

journal_title：Journal of phycology

authors： Huidobro-Toro JP,Donoso V,Flores V,Santelices B

更新日期：2015-04-01 00:00:00

abstract：:Cysts belonging to the benthic dinoflagellate Bysmatrum subsalsum were recovered from palynologically treated sediments collected in the Alvarado Lagoon (southwestern Gulf of Mexico). The cysts are proximate, reflecting the features of the parent thecal stage, and their autofluorescence implies a dinosporin compositio...

journal_title：Journal of phycology

authors： Limoges A,Mertens KN,Ruíz-Fernández AC,de Vernal A

更新日期：2015-02-01 00:00:00

abstract：:We investigated the relationship between daily growth rates and diel variation of carbon (C) metabolism and C to nitrogen (N) ratio under P- and N-limitation in the green algae Chlorella autotrophica. To do this, continuous cultures of C. autotrophica were maintained in a cyclostat culture system under 14:10 light:dar...

journal_title：Journal of phycology

authors： Ng WH,Liu H

更新日期：2015-02-01 00:00:00

abstract：:The family Microchaetaceae is a large group of heterocytous cyanobacteria, whose members bear typical morphological features of uniseriate heteropolar filaments never terminated by thin hairs and with simple false branching. However, phylogenetic analyses of the gene for 16S rRNA showed that members of this traditiona...

journal_title：Journal of phycology

authors： Hauer T,Bohunická M,Johansen JR,Mareš J,Berrendero-Gomez E

更新日期：2014-12-01 00:00:00

abstract：:Diatoms are perhaps the most diverse lineage of eukaryotic algae, with their siliceous cell wall and diplontic life history often considered to have played important roles in their extraordinary diversification. The characteristic diminution of the diatom cell wall over the course of vegetative growth provides a relia...

journal_title：Journal of phycology

authors： Kessenich CR,Ruck EC,Schurko AM,Wickett NJ,Alverson AJ

更新日期：2014-12-01 00:00:00

abstract：:Characeae (Charophyceae, Charophyta) contains two tribes with six genera: tribe Chareae with four genera and tribe Nitelleae, which includes Tolypella and Nitella. This paper uses molecular and morphological data to elucidate the phylogeny of Tolypella species in North America. In the most comprehensive taxonomic trea...

journal_title：Journal of phycology

authors： Stancheva R,Hall JD,Herburger K,Lewis LA,McCourt RM,Sheath RG,Holzinger A

更新日期：2014-10-01 00:00:00

abstract：:Symbiodinium reside intracellularly in a complex symbiosome (host and symbiont-derived) within cnidarian hosts in a specific host-symbiont association. Symbiodinium is a diverse genus with variation greater than other dinoflagellate orders. In this paper, our investigation into specificity examines antigenic variation...

journal_title：Journal of phycology

authors： Mazzillo Mays M,Kempf SC

更新日期：2014-10-01 00:00:00

abstract：:Coralline red algae play a key role in the ecology of near shore marine ecosystems and are increasingly being used to study the effects of climate change in the marine environment. Corallines are very difficult to identify to species, and even to genus, using morpho-anatomy, likely complicating studies of their ecolog...

journal_title：Journal of phycology

authors： Hind KR,Gabrielson PW,Lindstrom SC,Martone PT

更新日期：2014-08-01 00:00:00