Notes on the taxonomy and nomenclature of the algal classes Eustigmatophyceae and Tribophyceae (synonym Xanthophyceae)

Hibberd, David J.

doi:10.1111/j.1095-8339.1981.tb00954.x

Cited by 172 publications

(124 citation statements)

References 30 publications

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“…849/1) of the class Eustigmatophyceae (Hibberd, 1981) was obtained from the Culture Collection of Algae and Protozoa (Dunstaffnage Marine Lab., Oban, PA34 4AD, Scotland, U.K.). Cultures were maintained axenically in 100 ml S88 culture medium (Turner, 1979) Experimental cultures were grown in 2 1 Schott glass bottles containing 1.5 1 autoclave sterilised (30 min at 120 C, 2 x 105 N m -2 ) S88 culture medium.…”

Section: Microalgal Culturementioning

confidence: 99%

Patterns of variation in the lipid class and fatty acid composition of Nannochloropsis oculata (Eustigmatophyceae) during batch culture

et al. 1991

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Changes in the lipid and fatty acyl compositions of the marine microalga Nannochloropsis oculata Droop were examined during a batch culture growth cycle. During the early phase of batch culture the cellular proportion of triacylglycerols (TAG) increased. This was in addition to the increases in TAG observed in many microalgal species in the stationary-phase. Concomitant increases in the relative proportions of both saturated and monounsaturated fatty acids and decreases in the proportion of polyunsaturated fatty acids in total lipid were also associated with this phase. The separated individual lipid classes were found to have characteristic fatty acyl compositions. The relative proportion of lipid per cell, the relative proportions of the individual lipid classes and the fatty acyl compositions of the individual classes were all subject to variability during the growth cycle. The changing total lipid fatty acyl composition of N. oculata was found to be determined by the proportion of the total lipid present as TAG. The data suggest that the changes observed in the fatty acyl composition of N. oculata are a result of the partitioning of photosynthetically fixed carbon between polar and neutral lipid class biosynthesis and fatty acyl desaturation and elongation pathways. The effect of such a partitioning of carbon is discussed in relation to the effects of environmental variables and growth phase upon the balance of lipid class and polyunsaturated fatty acids (PUFA) synthesis in marine microalgae.

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Section: Microalgal Culturementioning

confidence: 99%

Patterns of variation in the lipid class and fatty acid composition of Nannochloropsis oculata (Eustigmatophyceae) during batch culture

et al. 1991

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“…N. gaditana belongs to the Eustigmataceae marine microalgae, first described by Hibberd (1981). They are mixotrophic, non-flagellated algae belonging to the class Eustigmatophyceae, which includes unicellular and small (<5 µm) coccoid organisms that lack chlorophyll b (Hoek et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Skin Protective Effects of Nannochloropsis gaditana Extract on H2O2-Stressed Human Dermal Fibroblasts

Letsiou¹,

Kalliampakou

Gardikis³

et al. 2017

Front. Mar. Sci.

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Nowadays, there is huge interest in natural products obtained from marine organisms that can promote a state of health and well-being for humans. Microalgae represent a primary source of bioactive compounds that could be used as functional ingredients in cosmetic formulations. The aim of the present study is to evaluate, for the first time, the effects of Nannochloropsis gaditana extract against oxidative stress in human primary fibroblasts so as to investigate the potential applications of it in cosmetics. To gain an insight into the molecular mechanisms of N. gaditana bioactivity, we developed a new RT-qPCR platform for studying transcript accumulation for an array of selected genes (up to 100) involved in many skin-related processes including anti-aging, hydration, oxidative stress response, and DNA damage. For the oxidative stress evaluation, H 2 O 2 was used as a stressor. The study of the transcript accumulation of genes revealed that N. gaditana extract exhibits skin protection properties by mediating oxidative responses and apoptosis (including SOD1, GPX1, BID), positively regulates genes involves in skin texture and hydration (including AQP3, Col6A1, FBN1) and modulates the expression of genes involved in skin irritation, DNA damage and aging (including IL1R, PCNA, FOXO3). These findings indicate that the specific N. gaditana extract possesses significant in vitro skin protection activity against induced oxidative stress, and provide new insights into the beneficial role of microalgae bioactive compounds in cosmetic formulations protecting skin from oxidative stress.

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“…This genus was named by Hibberd (1981) and is newly recorded in Korea by this study. This genus has morphological characteristics of a yellow-green chloroplast, a polyhedral pyrenoid and a red eyespot.…”

Section: Order Eustigmatales Family Eustigmataceae Genus Eustigmatos mentioning

confidence: 77%

A study of eight newly reported species of Chlorophyte and Eustigmatophyte, Korea

Song¹,

Lee²

2014

J. Ecol. Environ.

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In this study, aquatic and aerial algae were collected in various environments in Hongcheon-river of Gangwan-do between December 2011 and June 2012, with the aim of adding newly described genera and species to the Korean flora. As a result, five genera and eight species were recorded for the first time in Korea. These newly recorded genera and species were Cylindrocapsa geminella, Leptosira mediciana, Pseudendoclonium basiliense var. brandii, Stichococcus minor, S. deasonii, Eustigmatos polyphem, Nephrodiella lunaris, and Xanthonema exile. The eight taxa identified in this study mostly corresponded to their reported morphological characteristics. However, some differences from previous published descriptions were found; N. lunaria, reported to be an aquatic species in a previous study, was found to be an aerial algae inhabiting on rocks and mosses. Cylindrocapsa geminella was found to transform into attached or planktonic algae depending on the environmental condition, and the cell wall was found to be changed. Likewise, E. polyphem was seen to change cell-shape or chloroplast color according to the environment.

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Notes on the taxonomy and nomenclature of the algal classes Eustigmatophyceae and Tribophyceae (synonym Xanthophyceae)

Cited by 172 publications

References 30 publications

Patterns of variation in the lipid class and fatty acid composition of Nannochloropsis oculata (Eustigmatophyceae) during batch culture

Patterns of variation in the lipid class and fatty acid composition of Nannochloropsis oculata (Eustigmatophyceae) during batch culture

Skin Protective Effects of Nannochloropsis gaditana Extract on H2O2-Stressed Human Dermal Fibroblasts

A study of eight newly reported species of Chlorophyte and Eustigmatophyte, Korea

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