Results 31 to 40 of about 324 (136)

Heterothallism in the pennate diatomHaslea ostrearia(Bacillariophyta) [PDF]

European Journal of Phycology, 2009
Twelve clonal cultures of the marine pennate diatom Haslea ostrearia (Gaillon) Simonsen were used to study sexual reproduction and auxosporulation. After crossing, compatible gametangia paired girdle to girdle, with no visible surrounding mucilage. Two gametes were formed per gametangium; these were not attached to the thecae of the parental frustule ...
Nickolai A. Davidovich, Jean-Luc Mouget, Pierre Gaudin   +2 more
openaire   +1 more source

Video_1_The blue diatom Haslea ostrearia from the Indian Ocean coast of South Africa, with comparative analysis of Haslea organellar genomes.mp4

, 2022
Haslea ostrearia represents the model species of blue diatoms, a cluster of benthic marine species all belonging to the genus Haslea, noticeable for producing a blue pigment called marennine famous for its greening activity on the gills of bivalves but ...
Jean-Luc Mouget (477021), Thomas G. Bornman (7319126), Gustaaf Hallegraeff (571550), Andrzej Witkowski (127472), Monique Turmel (15348), Romain Gastineau (11441673), Claude Lemieux (15347), Przemysław Dąbek (813065)   +7 more
core   +1 more source

Light is a key factor in triggering sexual reproduction in the pennate diatom Haslea ostrearia [PDF]

FEMS Microbiology Ecology, 2009
Sexual reproduction is an obligatory phase in the life cycle of most diatoms, as cell size decreases with successive vegetative divisions and the maximal cell size is only restored by a specialized cell, the auxospore, which follows zygote formation as a result of sexual reproduction.
Jean-Luc Mouget, Romain Gastineau, Olga Davidovich, Pierre Gaudin, Nickolai A. Davidovich   +4 more
openaire   +3 more sources

Carbon Fixation by the Peculiar Marine Diatom Haslea Ostrearia

Photosynthetica, 2001
During batch culture of Haslea ostrearia the highest carbon (14C) fixation rate was found in vivo in cells that did not accumulate the blue pigment marennine (green form). This fixation rate decreased concomitantly with the accumulation of marennine.
G. Tremblin, J. M. Robert
openaire   +1 more source

Not only greening: The effects of marennine produced by Haslea ostrearia on physiological traits of three bivalve species

Aquaculture Reports, 2020
The marine diatom Haslea ostrearia is known for its ability to produce marennine, a blue-green water-soluble pigment, which is responsible for the oyster greening phenomenon in the French Atlantic Coast.
Fiddy S. Prasetiya, Priscilla Decottignies, Réjean Tremblay, Jean-Luc Mouget, Sunarto Sunarto, Iskandar Iskandar, Yayat Dhahiyat, Bruno Cognie   +7 more
doaj   +1 more source

The reproducibility of the bacterial community present in the cultures of the marine diatom Haslea ostrearia

, 2023
Abstract Background: The pigment produced by Haslea ostrearia, the marennine, is of an important medical and economic interest. Unfortunately this microalgae is complex to grow under axenic conditions, and H. ostrearia probably needs its own bacterial procession to survive. Consequently, this important bacterial presence greatly complicates any
Aurelie Peticca, Mostefa Fodil, Benoit Chenais, Francois Sabot, Nathalie Casse   +4 more
openaire   +1 more source

Caractérisation in silico des bactéries des cultures de la microalgue marine Haslea ostrearia

, 2023
Haslea ostrearia is a microscopic alga capable of synthesising a bluish pigment, marennin, which is highly valued in many fields because of its many potential applications (biofuel, food colouring, aquaculture supplements, etc.).
Peticca, Aurélie
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In silico characterisation of bacteria from cultures of the marine microalga Haslea ostrearia

, 2023
Haslea ostrearia est une algue microscopique capable de synthétiser un pigment bleuté, la marennine, très prisé dans de nombreux domaines suite à ses applications potentielles multiples (biocarburant, colorant alimentaire, compléments en aquaculture, etc.
Peticca, Aurélie
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Impact of Blue Haslea spp. Blooms on Benthic Diatom and Bacterial Communities

Phycology
Climate change and nutrient enrichment are increasing the frequency of algal blooms, with sometimes significant impacts on coastal ecosystems. Haslea ostrearia blooms have been documented in oyster ponds and are not harmful, yet their effects in open ...
Julie Seveno, Andrzej Witkowski, Ana Car, Romain Gastineau, Damien Sirjacobs, Vincent Leignel, Jean-Luc Mouget   +6 more
doaj   +1 more source

Efektivitas Supernatan Diatom Laut Haslea Ostrearia Sebagai Bahan Antibakteri Vibrio Alginolyticus [PDF]

, 2018
Udang dan kerapu merupakan komoditas perikanan yang bernilai ekonomi tinggi. Namun, kendala yang sering timbul dalam membangun komoditas perikanan ini adalah timbulnya penyakit yang dapat mengakibatkan kerugian.
Fauziah, Rabella Septi
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