Consulta: subjectFacets:"Rhodophyceae"
Registros recuperados: 3
Data/hora: 13/06/2024 00:13:16

Seasonal variations in photosynthetic irradiance response curves of macrophytes from a Mediterranean coastal lagoon
Provedor de dados: 5
Autores: Plus, Martin; Auby, Isabelle; Verlaque, Marc; Levavasseur, Guy.
The main photosynthesis and respiration parameters (dark respiration rate, light saturated production rate, saturation irradiance, photosynthetic efficiency) were measured on a total of 23 macrophytes of the Than lagoon (2 Phanerogams, 5 Chlorophyceae, 10 Rhodophyceae and 6 Phaeophyceae). Those measurements were performed in vitro under controlled conditions, close to the natural ones, and at several seasons. Concomitantly, measurements of pigment concentrations, carbon, phosphorous and nitrogen contents in tissues were performed. Seasonal intra-specific variability of photosynthetic parameters was found very high, enlightening an important acclimatation capacity. The highest photosynthetic capacities were found for Chlorophyceae (e.g. Monostroma obscurum...
Tipo: Text
Palavras-chave: Thau lagoon; Phaeophyceae; Rhodophyceae; Chlorophyceae; Seagrasses; Seasonal variations; Oxygen method; Macrophytes; Light response curve; Photosynthesis.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-465.pdf

&lt;i&gt;Fosliella farinosa&lt;/i&gt; (Lamouroux) Howe var. &lt;i&gt;chalicodictya&lt;/i&gt; Taylor (Rhodophyceae-Cryptonemiales) et &lt;i&gt;Lophosiphonia scopulorum&lt;/i&gt; (Harvey) Womersley (Rhodophyceae-Ceramiales) récoltées en Méditerranée nord-occidentale
Provedor de dados: 27
Autores: Coppejans, E.
&lt;i&gt;Fosliella farinosa&lt;/i&gt; (Lamour.) Howe var. &lt;i&gt;chalicodictya&lt;/i&gt; Taylor has been described in 1939 after material from the Caribbean Sea. It has never been mentioned since the &lt;i&gt;descriptio princeps&lt;/i&gt;. We found it sometimes while assorting phytosociological relevés from Banyuls and Port-Cros (France). &lt;i&gt;Lophosiphonia scopulorum&lt;/i&gt; (Harv.) Womersl., described from Australia, has recently been mentioned by Ardre (1970) along the Portuguese coasts. We noted this species at Banyuls. Both taxa are new for the Mediterranean Sea; the first one is new for the French algological flora.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ceramiales; Fosliella farinosa (Lamouroux) Howe var. Chalicodictya Taylor; Rhodophyceae; Caribbean Region; France; Portugal.
Ano: 1976
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3546

Analysis of two precipitation methods on the yield, structural features and activity of sulfated polysaccharides from Gracilaria cornea (Rhodophyta)
Provedor de dados: 3
Autores: Souza, Ricardo Basto; Queiroz, Ismael Nilo Lino de; Silva Neto, Antônio Alves da; Carneiro, José Gerardo; Rodrigues, José Ariévilo Gurgel; Benevides, Norma Maria Barros.
The global demand for natural products from seaweeds has increased worldwide; however, no description of the use of isoamly alcohol (IAA) for obtaining of sulfated polysaccharides (SPs) has been reported. We investigated the efficiency of two precipitation methods (M) in obtaining SPs from the red seaweed Gracilaria cornea. SPs enzymatically isolated were concentrated with cetylpyridinium chloride (M I) or IAA (M II) and extracts were examined with regard to their yield, structural features and in vitro effects on the activated partial thromboplastin time (APTT) using normal human plasma and standard heparin (193 IU mg-1). Yield difference reached 12.99%. Quantitative determination of sulfate was similar between the two methods (̴ 26%), but extracts...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhodophyceae; Polysulfated; Precipitation methods; Structural analysis; APTT test.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/24016