The current study estimated the antioxidant activity and biochemical composition of four seaweeds; Toania atomaria (Phaeophyta), Padina pavonia Jania rubens (Rhodophyta) Corallina elongate (Rhodophyta). highest total was observed with ethanol extract T. (44.6 ± 1.6 mg ascorbic acid equivalents/g crude extract). Among seaweeds, has recorded value in ferric reducing power (FRAP) assay (32.3 0.0 u...

Dereplication and chemotaxonomic studies of six marine algae of the Ochrophyta and one of the Rhodophyta phyla resulted in the detection of 22 separate compounds. All 16 secondary metabolites, including four new compounds (16-19), could be rapidly dereplicated using HPLC-NMR and HPLC-MS methodologies in conjunction with the MarinLit database. This study highlights the advantages of using NMR da...

Recently, prophylactic use of antibiotics in livestock have been banned by European Community with the consequence of a growing research towards new, safe and natural ingredients, like plant extract, that would have antimicrobial properties [1]. In this context, seaweed extracts have assumed great importance in animal nutritionfor the high content in bioactive molecules [2]. Seaweed or marine m...

An electrometric system for determination of carbonic anhydrase activity was constructed. Enzyme activity was assayed in homogenates of marine macroscopic Chlorophyta, Rhodophyta, and Phaeophyta. Plants surveyed included Ulva expansa (Setchell) Setchell and Gardner, Codium fragile (Suringar) Hariot, Enteromorpha sp., Chaetomorpha torta (Farlow) McClatchie (Chlorophyta); Laurencia papillosa (Gre...

The origin of the red algae has remained an enigma. Historically the Rhodophyta were classified first as plants and later as the most ancient eukaryotic organisms. Recent molecular studies have indicated similarities between red and green plastids, which suggest that there was a single endosymbiotic origin for these organelles in a common ancestor of the rhodophytes and green plants. Previous e...

In this study, 12 taxa from the Chlorophyta, Phaeophyta and Rhodophyta were collected from different depths at Gemlik-Karacaali and Erdek-Ormanlı. A total of 175 specimens from these divisions were used to determine Total Protein (TP), Total Soluble Carbohydrate (TSCH) and Chlorophyll a (Chl a), Chlorophyll b (Chl b), Chlorophyll c (Chl c), total carotenoid (Car) contents and Chl b/Chl a, Chl c...

Reproductive phenological pattern on tetrasporophytes and carposporophytes of Grateloupia subpectinata thalli were observed at Yangyang, on the middle east coast of Korea from January to December 2013. DNA sequences of cox1 gene from 48 selected samples were compared to assure that sample collection is single species, and they were all identical G. subpectinata. Density, length and width of tha...

Seaweed communities perform a variety of ecological services, including primary productivity supply, biological habitat construction, water purification, and acting as marine carbon sinks. The abundance seaweed is the basis for assessment services in communities. Ma’an Archipelago, adjacent to Yangtze River estuary China, an important typical island group. In this study, coastal islands Zhejian...

Codon adaptation is codon usage bias that results from selective pressure to increase the translation efficiency of a gene. Codon adaptation has been studied across a wide range of genomes and some early analyses of plastids have shown evidence for codon adaptation in a limited set of highly expressed plastid genes. Here we study codon usage bias across all fully sequenced plastid genomes which...