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) or long-term (1 month) incubations; for the hypersaline species, cells were also grown in the presence of 2 M NaCl. Over 500 spectra, acquired from at least three distinct cultures for each species, in each growth regime, were subjected to hierarchical cluster analysis (HCA) and were successfully separated according to their taxonomy, showing that the overall spectra were characteristic of each species and that this technique could be fruitfully employed to separate microalgal species living in a similar condition (as would be the case for a natural assemblage). In addition, in most cases, it was possible to differentiate between algae subjected to different growth treatments although belonging to the same species. We also demonstrated that it is possible to accurately identify species and determine the nutritional status of their environment of origin (e.g., N-source), provided that suitable FTIR spectral libraries are available. This study aims to provide the basis for the development of rapid, easy, and inexpensive methods for the evaluation of biodiversity in natural phytoplankton samples and to monitor the water quality of natural environments.
journal_name
J Phycoljournal_title
Journal of phycologyauthors
Domenighini A,Giordano Mdoi
10.1111/j.1529-8817.2009.00662.xsubject
Has Abstractpub_date
2009-04-01 00:00:00pages
522-31issue
2eissn
0022-3646issn
1529-8817journal_volume
45pub_type
杂志文章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
pub_type： 杂志文章
doi：10.1111/jpy.12467
更新日期：2016-12-01 00:00:00
abstract：:Several unknown mycosporine-like amino acids (MAAs) have been previously isolated from some cultured species of toxic dinoflagellates of the Alexandrium genus (Dinophyceae). One of them, originally called M-333, was tentatively identified as a shinorine methyl ester, but the precise nature of this compound is still un...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12076
更新日期：2013-08-01 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
pub_type： 杂志文章,评审
doi：10.1111/jpy.12416
更新日期：2016-06-01 00:00:00
abstract：:Filaments in the surface layers of metaphytic mats are exposed to high photon flux densities of PAR and UVBR. We investigated the effect of UVBR exposure on growth of eight isolates of common metaphytic algae (Cladophora, Mougeotia, Oedogonium, Pithophora, Spirogyra, and Zygnema) acclimated to either high or low PAR l...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12786
更新日期：2018-12-01 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：: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：: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
pub_type： 杂志文章
doi：10.1111/jpy.12367
更新日期：2016-02-01 00:00:00
abstract：:Menadione, a quinone that undergoes redox cycles leading to the formation of superoxide radicals, induces programmed cell death (PCD) in animals and plants. In this study, we investigated whether the unicellular green alga Chlamydomonas reinhardtii P.A.Dangeard is capable of executing PCD upon exposure to menadione st...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12188
更新日期：2014-06-01 00:00:00
abstract：:Biotic factors that affect phytoplankton physiology and behavior are not well characterized but probably play a crucial role in regulating their population dynamics in nature. We document evidence that some marine bacteria can decrease the swimming speed of motile phytoplankton through the release of putative protease...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/j.1529-8817.2008.00549.x
更新日期：2008-08-01 00:00:00
abstract：:Asexual reproduction by cloning may affect the genetic structure of populations, their potential to evolve, and, among foundation species, contributions to ecosystem functions. Macroalgae of the genus Fucus are known to produce attached plants only by sexual recruitment. Recently, however, clones of attached plants re...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/j.1529-8817.2011.01032.x
更新日期：2011-10-01 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：: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
pub_type： 杂志文章
doi：10.1111/jpy.13058
更新日期：2020-12-01 00:00:00
abstract：:Recently radiated dinoflagellates Apocalathium aciculiferum (collected in Lake Erken, Sweden), Apocalathium malmogiense (Baltic Sea) and Apocalathium aff. malmogiense (Highway Lake, Antarctica) represent a lineage with an unresolved phylogeny. We determined their phylogenetic relationships using phylotranscriptomics b...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12748
更新日期：2018-08-01 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
pub_type： 杂志文章
doi：10.1111/j.1529-8817.2009.00714.x
更新日期：2009-08-01 00:00:00
abstract：:Comparisons of the 3 previously used methods (continuous flow centrifugation, Millipore®filtration, and biodialysis) for making water samples seston-free before analysis for cobalamins point to several likely sources of error: (a) unpredictable occlusion of pores in Millipore®membranes during filtration; (b) irreversi...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/j.1529-8817.1969.tb02590.x
更新日期：1969-06-01 00:00:00
abstract：:Porphyra haitanensis (T. J. Chang & B. F. Zheng) is an important economic alga found off the southern coast of China. It has evolved a strong tolerance against stress, which is an important survival characteristic. Cyclophilin has been shown to be involved in the stress response of plants and algae. To investigate the...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/j.1529-8817.2012.01234.x
更新日期：2013-02-01 00:00:00
abstract：:An adverse consequence of applying morphology-based taxonomic systems to catalog cyanobacteria, which generally are limited in the number of available morphological characters, is a fundamental underestimation of natural biodiversity. In this study, we further dissect the polyphyletic cyanobacterial genus Lyngbya and ...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12115
更新日期：2013-12-01 00:00:00
abstract：:Large-scale environmental disturbances may impact both partners in coral host-Symbiodinium systems. Elucidation of the assembly patterns in such complex and interdependent communities may enable better prediction of environmental impacts across coral reef ecosystems. In this study, we investigated how the community co...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12749
更新日期：2018-08-01 00:00:00
abstract：:Macromolecular variability in microalgal populations subject to different nutrient environments was investigated, using the chlorophyte alga Scenedesmus quadricauda (Turpin) Bréb. as a model organism. The large size of the four-cell coenobia in the strain used in this study (∼35 μm diameter) conveniently allowed high ...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/j.1529-8817.2008.00564.x
更新日期：2008-10-01 00:00:00
abstract：:Twenty years ago an Arctic cryptophyte was isolated from Baffin Bay and given strain number CCMP2045. Here, it was described using morphology, water- and non-water soluble pigments and nuclear-encoded SSU rDNA. The influence of temperature, salinity, and light intensity on growth rates was also examined. Microscopy re...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12766
更新日期：2018-10-01 00:00:00
abstract：:In Chlamydomonas reinhardtii P. A. Dangeard, mitochondrial morphology has been observed during asexual cell division cycle, gamete and zygote formation, zygote maturation, and meiotic stages. However, the chronological transition of mitochondrial morphology after the stationary phase of vegetative growth, defined as t...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12040
更新日期：2013-04-01 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
pub_type： 杂志文章
doi：10.1111/jpy.12431
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
pub_type： 杂志文章
doi：10.1111/jpy.12430
更新日期：2016-08-01 00:00:00
abstract：:Since the first phylogenetic study of the order Batrachospermales, Batrachospermum was shown to be paraphyletic. Subsequently, sections of the genus have been methodically investigated using DNA sequences and morphology in order to propose new genera and delineate species. Batrachospermum section Turfosa is the last s...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.13001
更新日期：2020-08-01 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：:Macroalgal bloom-forming species occur in coastal systems worldwide. However, due to overlapping morphologies in some taxa, accurate taxonomic assessment and classification of these species can be quite challenging. We investigated the molecular and morphological characteristics of 153 specimens of bloom-forming Ulva ...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12108
更新日期：2013-10-01 00:00:00
abstract：:As part of a long-term study on the biology and ecology of the intertidal kelp Lessonia nigrescens Bory, we report on the occurrence of gall development on this alga, identified the possible causal agent, and assessed the extent of the phenomenon in two wild stands of the host. Our results showed that galls affecting ...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/j.1529-8817.2009.00749.x
更新日期：2009-12-01 00:00:00
abstract：:We studied group I introns in sterile cultures of selected groups of lichen photobionts, focusing on Trebouxia species associated with Xanthoria s. lat. (including Xanthomendoza spp.; lichen-forming ascomycetes). Group I introns were found inserted after position 798 (Escherichia coli numbering) in the large subunit (...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/jpy.12126
更新日期：2013-12-01 00:00:00
abstract：:The Conchocelis phases of Porphyra perforata f. patens, P. cuneiformis and P. nereocystis were cultured from spores in a sterile artificial medium at 12 C and with 25 ft-c illumination for 10 hr daily. The cultures showed differences in duration of the vegetative phase, sporulation, liberation of spores, and the retur...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/j.1529-8817.1969.tb02574.x
更新日期：1969-03-01 00:00:00
abstract：:The dinophysoid dinoflagellates are currently divided into three families: Amphisoleniaceae, Dinophysaceae (mainly Dinophysis Ehrenb. and Phalacroma F. Stein), and Oxyphysaceae, the latter including only one member, Oxyphysis oxytoxoides Kof. Phalacroma has been recently reinstated separately from Dinophysis, and its ...
journal_title：Journal of phycology
pub_type： 杂志文章
doi：10.1111/j.1529-8817.2011.00964.x
更新日期：2011-04-01 00:00:00
