Abstract:
:Toxicities of cadmium (Cd) and zinc (Zn) to the green alga Selenastrum capricornutum Printz were determined over 72 h in defined synthetic media buffered by citrate (FRAQCIT ; [citrate] = 100 μM or 5 μM) or nitrilotriacetate (FRAQNTA ; [NTA] = 5 μM). Algal sensitivity to free Cd2 + or free Zn2 + in FRAQCIT was much higher than in FRAQNTA . In parallel experiments, short-term intracellular uptake of radiolabeled 109 Cd was measured as a function of time (0-30 min) in FRAQCIT and FRAQNTA ; for a given free Cd2 + concentration (8, 250, or 610 nM), intracellular accumulation of Cd was consistently higher in FRAQCIT than in FRAQNTA . Under the same conditions, the alga accumulated 14 C-labeled citrate almost linearly over a 2-h period. Loss of 109 Cd from algal cells that had been prelabeled with the radionuclide occurred slowly, and the loss rate was insensitive to the presence or absence of citrate, indicating that the overall permeability of the algal membrane to Cd was unaffected by citrate. The enhanced bioavailability of Cd in the presence of citrate could be explained by membrane transport of a charged Cd-citrate complex, presumably by accidental transport.
journal_name
J Phycoljournal_title
Journal of phycologyauthors
Errécalde O,Campbell PGCdoi
10.1046/j.1529-8817.2000.99103.xsubject
Has Abstractpub_date
2000-06-01 00:00:00pages
473-483issue
3eissn
0022-3646issn
1529-8817journal_volume
36pub_type
杂志文章abstract::The genus Kobayasiella includes species difficult or even impossible to identify in LM. Only EM allows observation of the ultrastructural features helping in diagnostic species circumscription. Recent surveys of the epilithic diatoms in the running waters of Reunion Island led to the discovery of a new species, K. beb...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2012.01115.x
更新日期:2012-04-01 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
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2011.01083.x
更新日期:2012-02-01 00:00:00
abstract::The Aleutian Archipelago coastal ecosystem has undergone a dramatic change in community composition during the past two decades. Following the removal of ∼99% of the sea otters, Enhydra lutris, from the ecosystem, changes to the benthic communities resulted in widespread losses to most of the region's kelp beds and co...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2012.01139.x
更新日期:2012-08-01 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
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2011.01060.x
更新日期:2011-12-01 00:00:00
abstract::Alaria grandifolia is recorded from Nova Scotia for the first time and is briefly compared with A. esculenta from this area. ...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/j.1529-8817.1967.tb04620.x
更新日期:1967-03-01 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
pub_type: 杂志文章
doi:10.1111/j.1529-8817.1966.tb04599.x
更新日期:1966-06-01 00:00:00
abstract::Photosynthetic dinoflagellates are ecologically and biogeochemically important in marine and freshwater environments. However, surprisingly little is known of how this group acquires inorganic carbon or how these diverse processes evolved. Consequently, how CO2 availability ultimately influences the success of dinofla...
journal_title:Journal of phycology
pub_type: 杂志文章,评审
doi:10.1111/jpy.13050
更新日期:2020-07-11 00:00:00
abstract::Worldwide, macroalgae have invaded near-shore marine ecosystems. However, their haplodiplontic life cycles have complicated efforts to predict patterns of growth and spread, particularly since most theoretical predictions are derived from diplontic taxa (i.e., animals). To complete one revolution of the life cycle, tw...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/jpy.13011
更新日期:2020-08-01 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
pub_type: 杂志文章
doi:10.1111/j.1529-8817.1968.tb04696.x
更新日期:1968-12-01 00:00:00
abstract::Although hypotheses have been proposed and developed to interpret the origins and functions of introns, substantial controversies remain about the mechanism of intron evolution. The availability of introns in the intermediate state is quite helpful for resolving this debate. In this study, a new strain of diatom (deno...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/jpy.12605
更新日期:2018-02-01 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
pub_type: 杂志文章
doi:10.1111/jpy.12257
更新日期:2015-02-01 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
pub_type: 杂志文章
doi:10.1111/jpy.12215
更新日期:2014-10-01 00:00:00
abstract::To investigate the changes in the morphology and polysaccharide content of Microcystis aeruginosa (Kütz.) Kütz. during flagellate grazing, cultures of M. aeruginosa were exposed to grazing Ochromonas sp. for a period of 9 d under controlled laboratory conditions. M. aeruginosa responded actively to flagellate grazing ...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2008.00502.x
更新日期:2008-06-01 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
pub_type: 杂志文章
doi:10.1111/jpy.12016
更新日期:2013-02-01 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
pub_type: 杂志文章
doi:10.1111/jpy.12281
更新日期:2015-04-01 00:00:00
abstract::Gracilariaceae has a worldwide distribution including numerous economically important species. We applied high-throughput sequencing to obtain organellar genomes (mitochondria and chloroplast) from 10 species of Gracilariaceae and, combined with published genomes, to infer phylogenies and compare genome architecture a...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/jpy.12765
更新日期:2018-12-01 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
pub_type: 杂志文章
doi:10.1111/jpy.12515
更新日期:2017-04-01 00:00:00
abstract::We examined the diurnal expression of five genes encoding nitrogen-assimilating enzymes in the marine diatom Thalassiosira pseudonana (Hust.) Hasle et Heimdal following a transition from NH4 (+) - to NO3 (-) -supplemented media. The accumulation of nia transcripts (encoding nitrate reductase, NR) following the transit...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2009.00648.x
更新日期:2009-04-01 00:00:00
abstract::Sargassum muticum (Yendo) Fensholt is an invasive species that is firmly established on intertidal and subtidal rocky shores of Europe and the Pacific coast of North America. Local success and spread of S. muticum is thought to rely on its reproductive potential that seems dependent on exogenous factors like tidal and...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2008.00619.x
更新日期:2009-02-01 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
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2012.01191.x
更新日期:2012-08-01 00:00:00
abstract::Cytological changes induced by nitrate or phosphate limitation were reproducible and readily visible by phase contrast microscopy in Coscinodiscus wailesii, Ditylum brightwellii, Rhizosolenia hebetata f. semi-spina, Skeletonema costatum, and Stephanopyxis turris. These effects included changes in chromatophore number ...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/j.1529-8817.1966.tb04610.x
更新日期:1966-12-01 00:00:00
abstract::The fine structure of the marine coccolithophorid Hymenomonas (Cricosphaera) carterae (Braarud & Fagerland) Manton & Peterfi is reported. Details of the formation of the circular organic body scales are presented. Their formation is shown to be closely linked with the presence of tubules found within the Golgi cistern...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/j.1529-8817.1969.tb02621.x
更新日期:1969-12-01 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
pub_type: 信件
doi:10.1111/jpy.12466
更新日期:2017-02-01 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
pub_type: 杂志文章
doi:10.1111/jpy.12400
更新日期:2016-06-01 00:00:00
abstract::Ulva Linnaeus (Ulvophyceae, Ulvales) is a genus of green algae widespread in different aquatic environments. Members of this genus show a very simple morphology and a certain degree of phenotypic plasticity, heavily influenced by environmental conditions, making difficult the delineation of species by morphological fe...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/jpy.12005
更新日期:2012-12-01 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
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2008.00604.x
更新日期:2008-12-01 00:00:00
abstract::Crocosphaera watsonii, a unicellular nitrogen-fixing cyanobacterium found in oligotrophic oceans, is important in marine carbon and nitrogen cycles. Isolates of C. watsonii can be separated into at least two phenotypes with environmentally important differences, indicating possibly distinct ecological roles and niches...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/jpy.12090
更新日期:2013-08-01 00:00:00
abstract::Prochlorococcus is a ubiquitous marine oxyphotobacterium characterized by the presence of DV-chl a and b. In addition, the type strain Prochlorococcus marinus Chisholm et al. CCMP 1375 (or SS120), an isolate from the Sargasso Sea, contains low levels of an unusual phycoerythrin. Until now, it has been unclear if phyco...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1046/j.1529-8817.2000.99203.x
更新日期:2000-08-26 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
pub_type: 杂志文章
doi:10.1111/j.1529-8817.2011.01108.x
更新日期:2012-02-01 00:00:00
abstract::The gametes of chlorophytes can be divided into two morphological types (types α and β) based on the position of the mating structure relative to the flagella and eyespot. To elucidate the relationship between the morphological types and the sexes, we studied spatial relationships between the flagellar apparatus-eyesp...
journal_title:Journal of phycology
pub_type: 杂志文章
doi:10.1111/jpy.13096
更新日期:2020-11-04 00:00:00