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Journal ArticleDOI

The genus Laminaria sensu lato : recent insights and developments

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TLDR
This review about the genus Laminaria sensu lato summarizes the extensive literature that has been published since the overview of the genus given by Kain in 1979, and covers recent insights into phylogeny and taxonomy, and discusses morphotypes, ecotypes, population genetics and demography.
Abstract
This review about the genus Laminaria sensu lato summarizes the extensive literature that has been published since the overview of the genus given by Kain in 1979. The recent proposal to divide the genus into the two genera Laminaria and Saccharina is acknowledged, but the published data are discussed under a 'sensu lato' concept, introduced here. This includes all species which have been considered to be 'Laminaria' before the division of the genus. In detail, after an introduction the review covers recent insights into phylogeny and taxonomy, and discusses morphotypes, ecotypes, population genetics and demography. It describes growth and photosynthetic performance of sporophytes with special paragraphs on the regulation of sporogenesis, regulation by endogenous rhythms, nutrient metabolism, storage products, and salinity tolerance. The biology of microstages is discussed separately. The ecology of these kelps is described with a focus on stress defence against abiotic and biotic factors and the role of Laminaria as habitat, its trophic interactions and its competition is discussed. Finally, recent developments in aquaculture are summarized. In conclusion to each section, as a perspective and guide to future research, we draw attention to the remaining gaps in the knowledge about the genus and kelps in general.

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Journal ArticleDOI

Bioactive compounds in seaweed: functional food applications and legislation

TL;DR: Worldwide research on bioactive compounds in seaweed is reviewed, mainly of nine genera or species of seaweed, which are also available in European temperate Atlantic waters, i.e. Laminaria sp.
Journal ArticleDOI

The cell wall polysaccharide metabolism of the brown alga Ectocarpus siliculosus. Insights into the evolution of extracellular matrix polysaccharides in Eukaryotes.

TL;DR: Surprisingly, known families of cellulases, expansins and alginate lyases are absent in Ectocarpus, suggesting the existence of novel mechanisms and/or proteins for cell wall expansion in brown algae.
Journal ArticleDOI

The role of kelp species as biogenic habitat formers in coastal marine ecosystems

TL;DR: Biodiversity patterns associated with kelp holdfasts, stipes and blades are examined, as well as the wider understorey habitat, and generality between kelp species and biogeographic regions are searched for.
Journal ArticleDOI

Mass-cultivation of carbohydrate rich macroalgae, a possible solution for sustainable biofuel production

TL;DR: In this paper, the authors examined the current cultivation technologies for marine biomass and the environmental and economic aspects of using brown seaweeds for bio-ethanol production, and concluded that marine biomass could meet these challenges, being an abundant and carbon neutral renewable resource with potential to reduce green house gas (GHG) emissions and the manmade impact on climate change.
References
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Journal ArticleDOI

Protoplast regeneration from gametophytes and sporophytes of some species in the order Laminariales (Phaeophyceae)

TL;DR: It is found that protoplast isolation from the sporophytes of members of the Laminariales results in the release of hydrogen peroxide, up to 5–120 μM final concentration in the macerating medium, a characteristic which may be related to protop last recalcitrance.
Journal ArticleDOI

Influence of carbon supply on the stimulation of light-saturated photosynthesis by blue light in Laminaria saccharina: implications for the mechanism of carbon acquisition in higher brown algae

TL;DR: Observations could be explained if, in analogy to the mechanism proposed for Ectocarpus, photosynthesis was supported by a blue-light-activated release of CO 2 from an internal store, which is located in the vacuoles of the cortical tissue of the blades.
Book ChapterDOI

Streblonema (Ectocarpales, Phaeophyceae) infection in the kelp Laminaria saccharina (Laminariales, Phaeophyceae) in the western Baltic

TL;DR: Both field and laboratory observations indicate that a lag phase exists between infection and outbreak of the Streblonema disease, and juvenile hosts, which mainly appear in autumn, are infected at almost the same rate.
Journal ArticleDOI

Observations on the ecology of laminaria sinclairii on three northern oregon beaches1,2

TL;DR: Laminaria sinclairii (Harvey) Furlow, Anderson and Eaton occurs only on the Pacific Coast of North America and is usually restricted to rocks on beaches subjected to moderate to heavy surf and a large seasonal fluctuation in sand level.
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