EXPLORATORY STUDIES ON THE PHYSIOLOGY AND ECOLOGY OF A PSYCHROPHILIC MARINE DIATOM(1).

abstract：:Central America is one of the most important biodiversity hot spots in the world, and Costa Rican microbial communities from thermal springs are the best characterized in the isthmus. Miravalles is an inactive quaternary stratovolcano, and the Rincón de la Vieja is a unique active volcano, in whose slopes diverse hydr...

journal_title：Journal of phycology

authors： Brenes-Guillén L,Vidaurre-Barahona D,Morales S,Mora-López M,Sittenfeld A,Uribe-Lorío L

更新日期：2020-09-30 00:00:00

abstract：:Three species of tropical oceanic phytoplankton were isolated from two locations in the eastern Pacific Ocean. Unialgal cultures were maintained in an enriched seawater medium. The effects of temperature, and, in separate experiments, illuminance, on the exponential cell division rates of those algae were investigated...

journal_title：Journal of phycology

authors： Thomas WH

更新日期：1966-03-01 00:00:00

abstract：:Maintaining buoyancy with gas-filled floats (pneumatocysts) is essential for some subtidal kelps to achieve an upright stature and compete for light . However, as these kelps grow up through the water column, pneumatocysts are exposed to substantial changes in hydrostatic pressure, which could cause complications as i...

journal_title：Journal of phycology

authors： Liggan LM,Martone PT

更新日期：2018-10-01 00:00:00

abstract：:We tested how the availability of carbon and nitrogen determines both the production of Asparagopsis taxiformis (Delile) V. Trevis. and content of the two major halocarbons, bromoform and dibromoacetic acid. The halogenated secondary metabolites of Asparagopsis species are particularly interesting from an applied pers...

journal_title：Journal of phycology

authors： Mata L,Gaspar H,Santos R

更新日期：2012-02-01 00:00:00

abstract：:Blooms of Microcystis aeruginosa (Kützing) Kützing occur frequently in many freshwater ecosystems around the world, but the role of environmental factors in promoting the growth and determining the proportion of toxic and non-toxic strains still requires more investigation. In this study, four strains (toxic CPCC299 &...

journal_title：Journal of phycology

authors： Deblois CP,Juneau P

更新日期：2012-08-01 00:00:00

abstract：:Harmful cyanobacterial blooms (CyanoHABs) are a rapidly proliferating global problem, threatening the use and sustainability of our freshwater resources. In recent decades, the United States, China, and other developed and developing countries threatened by CyanoHAB expansion have established collaborative efforts aim...

journal_title：Journal of phycology

authors： Paerl HW

更新日期：2020-12-01 00:00:00

abstract：:Fourier transform infrared (FTIR) spectrometry was used to study the spectral features of 12 eukaryotic and two prokaryotic species of microalgae. The algae were cultured in liquid media containing either NO3 (-) or NH4 (+) as the sole N-source; for the NH4 (+) treatment, the algae were subjected to short-term (24 h) ...

journal_title：Journal of phycology

authors： Domenighini A,Giordano M

更新日期：2009-04-01 00:00:00

abstract：:We studied cupric glutamate as a novel algicide for marine harmful algae and hexadecyltrimethyleamine bromide (HDTMAB) as an accelerant. Cupric glutamate had an excellent ability to inhibit the growth of Alexandrium sp. LC3, but the inhibition efficiency did not increase with higher cupric glutamate concentration. The...

journal_title：Journal of phycology

authors： Li H,Miao J,Cui F,Li G

更新日期：2008-12-01 00:00:00

abstract：:Proliferating cell nuclear antigen (PCNA) plays critical roles in eukaryotic DNA replication and replication-associated processes. It is typically encoded by one or two gene copies (pcna) in eukaryotic genomes. Recently reported higher copy numbers of pcna in some dinoflagellates raised a question of how this gene has...

journal_title：Journal of phycology

authors： Hou Y,Ji N,Zhang H,Shi X,Han H,Lin S

更新日期：2019-02-01 00:00:00

abstract：:The green algal genus Ulva includes a speciose group of marine macroalgae inhabiting shallow seas worldwide. Although algal blooms in Asia highlight the opportunistic nature of several "nuisance" species, recent research clearly reveals important positive benefits of Ulva. Applied research requires accurate, reliable,...

journal_title：Journal of phycology

authors： Kirkendale L,Saunders GW,Winberg P

更新日期：2013-02-01 00:00:00

abstract：:New miniaturized techniques for multiplying microalgae and estimating their phytohormone production were developed; in these methods, the strains to be tested are cultivated in microtitre plates, and the phytohormones in suspensions of the cultures are measured by direct ELISAs. Specific and sensitive ELISAs for deter...

journal_title：Journal of phycology

authors： Jirásková D,Poulíčková A,Novák O,Sedláková K,Hradecká V,Strnad M

更新日期：2009-02-01 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：:Microbial eukaryotes may extinguish much of their nuclear phylogenetic history due to endosymbiotic/horizontal gene transfer (E/HGT). We studied E/HGT in 32,110 contigs of expressed sequence tags (ESTs) from the dinoflagellate Alexandrium tamarense (Dinophyceae) using a conservative phylogenomic approach. The vast maj...

journal_title：Journal of phycology

authors： Chan CX,Soares MB,Bonaldo MF,Wisecaver JH,Hackett JD,Anderson DM,Erdner DL,Bhattacharya D

更新日期：2012-10-01 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：:A giant form of Anadyomene, most similar to Anadyomene pavonina (J. Agardh) Wille, a rare and diminutive alga endemic to Florida, appeared as up to 10 m long net-like strands covering 10%-80% of a 0.5 km region of the 25-50 m deep Belizean outer reef slope where none had been present up to 12 months earlier. This new ...

journal_title：Journal of phycology

authors： Littler MM,Littler DS

更新日期：2012-02-01 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：: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：:A metabolite screening of cyanobacteria was performed by nuclear magnetic resonance (NMR) analysis of the soluble material obtained through sequential extraction of the biomass with three different extractive ability solvents (hexane, ethyl acetate, and methanol). Twenty-five strains from the Coimbra Collection of Alg...

journal_title：Journal of phycology

authors： Iglesias MJ,Soengas R,Martins CB,Correia MJ,Ferreira JD,Santos LMA,Ortiz FL

更新日期：2020-04-01 00:00:00

abstract：:The diatom Cyclotella meneghiniana Kütz. (SAG 1020-a) was cultured under high-light (HL) and low-light (LL) conditions with either high (12 μM) or low (1 μM) iron in the media. Changes in cell morphology, especially cell volume and chloroplast size, were observed in cells grown under low iron. In contrast, HL had a mu...

journal_title：Journal of phycology

authors： Beer A,Juhas M,Büchel C

更新日期：2011-12-01 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：:The ultrastructural changes which occurred during senescence in the stationary phase of growth of the unicellular green alga Spongiochloris typica were observed. The cell wall consists of a membrane like primary wall and an inner secondary wall which becomes progressively thickened with age of the culture. During sene...

journal_title：Journal of phycology

authors： McLean RJ

更新日期：1968-12-01 00:00:00

abstract：:Nearly one-fourth of the lichen-forming fungi associate with trentepohlialean algae, yet their genetic diversity remains unknown. Recent work focusing on free-living trentepohlialean algae has provided a phylogenetic context within which questions regarding the lichenization of these algae can be asked. Here, we conce...

journal_title：Journal of phycology

authors： Nelsen MP,Plata ER,Andrew CJ,Lücking R,Lumbsch HT

更新日期：2011-04-01 00:00:00

abstract：:In batch cultures of four Mediterranean strains (from France, Italy, and Spain) of Alexandrium catenella (Whedon et Kof.) Balech growing on a daily light cycle, ammonium and urea uptake were estimated by the (15) N tracer technique. Ammonium uptake could be described by Michaelis-Menten kinetics along a substrate grad...

journal_title：Journal of phycology

authors： Jauzein C,Collos Y,Garcés E,Vila M,Maso M

更新日期：2008-10-01 00:00:00

abstract：:The molecular structure of the carotenoid lactoside P457, (3S,5R,6R,3'S,5'R,6'S)-13'-cis-5,6-epoxy-3',5'-dihydroxy-3-(β-d-galactosyl-(1→4)-β-d-glucosyl)oxy-6',7'-didehydro-5,6,7,8,5',6'-hexahydro-β,β-caroten-20-al, was confirmed by spectroscopic methods using Symbiodinium sp. strain NBRC 104787 cells isolated from a s...

journal_title：Journal of phycology

authors： Wakahama T,Laza-Martínez A,Bin Haji Mohd Taha AI,Okuyama H,Yoshida K,Kogame K,Awai K,Kawachi M,Maoka T,Takaichi S

更新日期：2012-12-01 00:00:00

abstract：:The marine filamentous nonheterocystous nitrogen-fixing cyanobacterium Lyngbya aestuarii (F. K. Mert.) Liebman ex Gomont CCY 9616 was grown under diazotrophic and nondiazotrophic conditions and under an alternating 16:8 light:dark (L:D) regime. Nitrogenase activity appeared just before the onset of the dark period, re...

journal_title：Journal of phycology

authors： Ferreira D,Stal LJ,Moradas-Ferreira P,Mendes MV,Tamagnini P

更新日期：2009-08-01 00:00:00

abstract：:The chloroplast pigments of 2 species of Chloro-monadophyceae have been examined. Both Gonyo-stomum semen and Vacuolaria virescens possessed only one chlorophyll, chlorophyll a. Gonyostomum contained 4 carotenoids, but not fucoxanthin and peridinin. Vacuolaria also possessed 4 carotenoids which have been identified as...

journal_title：Journal of phycology

authors： Chapman DJ,Haxo FT

更新日期：1966-06-01 00:00:00

abstract：:A small siliceous species of marine phytoplankton, order Parmales (Heterokonta), was isolated and characterized for the first time with the aid of a fluorescent silicon tracer 2-(4-pyridyl)-5-([4-(2-dimethylaminoethylaminocarbamoyl)-methoxy]phenyl)oxazole (PDMPO). This dye was easily detected by clear fluorescence in ...

journal_title：Journal of phycology

authors： Ichinomiya M,Yoshikawa S,Kamiya M,Ohki K,Takaichi S,Kuwata A

更新日期：2011-02-01 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：:Species currently classified within the cyanobacterial genus Microcoleus were determined to fall into two distinct clades in a 16S rDNA phylogeny, one containing taxa within the Oscillatoriaceae, the other containing taxa within the Phormidiaceae. The two lineages were confirmed in an analysis of the 16S-23S internal ...

journal_title：Journal of phycology

authors： Siegesmund MA,Johansen JR,Karsten U,Friedl T

更新日期：2008-12-01 00:00:00

abstract：:Most mitochondrial genomes in the green algal phylum Chlorophyta are AT-rich, circular-mapping DNA molecules. However, mitochondrial genomes from the Reinhardtii clade of the Chlorophyceae lineage are linear and sometimes fragmented into subgenomic forms. Moreover, Polytomella capuana, from the Reinhardtii clade, has ...

journal_title：Journal of phycology

authors： Borza T,Redmond EK,Laflamme M,Lee RW

更新日期：2009-12-01 00:00:00