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The Ectocarpus genome and the independent evolution of multicellularity in brown algae
Brown algae (Phaeophyceae) are complex photosynthetic organisms with a very different evolutionary history to green plants, to which they are only distantly related. These seaweeds are the dominant… Expand
Iodine uptake in Laminariales involves extracellular, haloperoxidase-mediated oxidation of iodide
- F. Küpper, N. Schweigert, E. Ar Gall, J. Legendre, H. Vilter, B. Kloareg
- 20 November 1998
Abstract. Sporophytes of Laminaria digitata (L.) Lamour. were assayed for their content of accumulated iodine, which ranged from 0.4% of dry weight in adult plants up to 4.7% for young plantlets.… Expand
Structure of the cell walls of marine algae and ecophysiological functions of the matrix polysaccharides
The cell wall polysaccharide metabolism of the brown alga Ectocarpus siliculosus. Insights into the evolution of extracellular matrix polysaccharides in Eukaryotes.
- G. Michel, Thierry Tonon, D. Scornet, J. Cock, B. Kloareg
- Medicine, Biology
- The New phytologist
- 1 October 2010
• Brown algal cell walls share some components with plants (cellulose) and animals (sulfated fucans), but they also contain some unique polysaccharides (alginates). Analysis of the Ectocarpus genome… Expand
Evolution and diversity of plant cell walls: from algae to flowering plants.
- Z. Popper, G. Michel, +5 authors D. B. Stengel
- Biology, Medicine
- Annual review of plant biology
- 28 April 2011
All photosynthetic multicellular Eukaryotes, including land plants and algae, have cells that are surrounded by a dynamic, complex, carbohydrate-rich cell wall. The cell wall exerts considerable… Expand
Purification and characterization of the alpha-agarase from Alteromonas agarlyticus (Cataldi) comb. nov., strain GJ1B.
- P. Potin, C. Richard, C. Rochas, B. Kloareg
- Chemistry, Medicine
- European journal of biochemistry
- 1 June 1993
The phenotypic features of strain GJ1B, an unidentified marine bacterium that degrades agar [Young, K. S. Bhattacharjee, S. S. & Yaphe, W. (1978) Carbohydr. Res. 66, 207-212], were investigated and… Expand
The kappa-carrageenase of P. carrageenovora features a tunnel-shaped active site: a novel insight in the evolution of Clan-B glycoside hydrolases.
BACKGROUND kappa-carrageenans are gel-forming, sulfated 1,3-alpha-1,4-beta-galactans from the cell walls of marine red algae. The kappa-carrageenase from the marine, gram-negative bacterium… Expand
The endo-beta-agarases AgaA and AgaB from the marine bacterium Zobellia galactanivorans: two paralogue enzymes with different molecular organizations and catalytic behaviours.
Two beta-agarase genes, agaA and agaB, were functionally cloned from the marine bacterium Zobellia galactanivorans. The agaA and agaB genes encode proteins of 539 and 353 amino acids respectively,… Expand
Linear β-1,3 Glucans Are Elicitors of Defense Responses in Tobacco
Laminarin, a linear β-1,3 glucan (mean degree of polymerization of 33) was extracted and purified from the brown alga Laminaria digitata . Its elicitor activity on tobacco ( Nicotiana tabacum ) was… Expand
Zobellia galactanovorans gen. nov., sp. nov., a marine species of Flavobacteriaceae isolated from a red alga, and classification of [Cytophaga] uliginosa (ZoBell and Upham 1944) Reichenbach 1989 as…
- T. Barbeyron, S. L'Haridon, E. Corre, B. Kloareg, P. Potin
- Biology, Medicine
- International journal of systematic and…
- 1 May 2001
A mesophilic, aerobic, non-flagellated, gliding bacterium, forming yellow colonies and designated DsijT, was isolated from a red alga on the sea-shore of Roscoff, Brittany, France. DsijT was selected… Expand