Results 151 to 160 of about 1,126 (188)

Photosynthetic response of P-deficient Gracilaria tenuistipitata under two different phosphate treatments

Physiologia Plantarum, 1996
Phosphorus‐deficient Gracilaria tenuistipitata Zhang et Xia was cultured for 15 days at two different inorganic phosphate (Pi) concentrations: 3 μM (low Pi treatmenl) or 30 μM phosphate (high Pi treatment). The amount of ribulose‐l,5‐bisphosphate carboxy‐lase/oxygenase (Rubisco), phycobiliproteins, Chl a and total soluble proteins were higher in the ...
María Jesús García-Sánchez, JosÉ Antonio FernÁndez   +1 more
exaly   +2 more sources

Effects of plant growth regulators on callus formation, growth and regeneration in axenic tissue cultures of Gracilaria tenuistipitata and Gracilaria perplexa (Gracilariales, Rhodophyta)

Phycological Research, 2004
SUMMARY The effects of auxins and cytokinin on callus formation, growth and regeneration of Gracilaria tenuistipitata Chang et Xia and G. perplexa Byrne et Zuccarello (Gracilariales, Rhodophyta) are reported. Plant growth regulators (PGR) in concentrations ranging from 0.1 to 100.0 μmol of indole-3-acetic acid, 2,4-dichlorophenoxyacetic acid (2,4-D),
Nair Sumie Yokoya
exaly   +2 more sources

Water Physicochemical Properties Influence the Production, Nutritional Composition, and Antioxidant Activity of Gracilaria tenuistipitata From the Northern Bay of Bengal, Bangladesh

Journal of Food Biochemistry
This study investigates the influence of water physicochemical properties on the growth, production, nutritional composition, and antioxidant properties of Gracilaria tenuistipitata, cultivated at two different sites (Gangamati and Hazipur) along the northern Bay of Bengal, Bangladesh. The water quality parameters were monitored weekly.
Md. Rahamat Ullah, Md. Monjurul Hasan
exaly   +2 more sources

Characterization and daily variation of nitrate reductase in Gracilaria tenuistipitata (Rhodophyta)

Biochemical and Biophysical Research Communications, 2002
A daily rhythm in the activity of nitrate reductase (NR: EC 1.6.6.1) isolated from the marine red algae Gracilaria tenuistipitata is shown to be attributable to changes in amounts of the protein. The enzyme was purified in four steps: ion exchange Q-Sepharose separation, ammonium sulfate precipitation, gel filtration on Sephacryl S-300, and affinity ...
Patricia Fátima, Lopes, Mariana, de Cabral Oliveira, Pio, Colepicolo   +2 more
openaire   +2 more sources

Chromosomal and mutagenic study of the marine macroalga, Gracilaria tenuistipitata

Journal of Applied Phycology, 1995
A pressing need of algal aquaculture is the availability of strains with favourable characteristics. Since this goal cannot be achieved easily by traditional breeding methods for Gracilaria tenuistipitata, we developed mutagenesis and selection procedures that bypass the necessity for protoplast isolation and cultivation.
SHEN, DL, WU, M.
openaire   +2 more sources

Limited acclimation of photosynthesis to blue light in the seaweed Gracilaria tenuistipitata

Physiologia Plantarum, 2002
Changes in photosynthetic capacity of the seaweed Gracilaria tenuistipitata Zhang et Xia acclimated to monochromatic blue light were studied. For this purpose, affinity for external inorganic carbon, light use efficiency, carbonic anhydrase (CA; EC 4.2.1.1) activity and content of ribulose‐1,5‐bisphosphate carboxylase/oxygenase (Rubisco; EC 4.1.1.39 ...
Jesús M, Mercado, Pilar, Sánchez, Raquel, Carmona, F. Xavier, Niell   +3 more
openaire   +2 more sources

Affinity for inorganic carbon of Gracilaria tenuistipitata cultured at low and high irradiance

Planta, 2000
Regulation by irradiance level of the mechanism for dissolved inorganic carbon (DIC) acquisition was examined in the red macroalga Gracilaria tenuistipitata Zhang et Xia. For this purpose, affinity for external DIC, carbonic anhydrase (CA; EC 4.2.1.1) activity and content of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco; EC 4.1.1.39) were ...
J M, Mercado, R, Carmona, F X, Niell
openaire   +2 more sources

Induction of Oxidative Stress in the Red Macroalga Gracilaria tenuistipitata by Pollutant Metals

Archives of Environmental Contamination and Toxicology, 2003
Heavy metals are environmental pollutants that have the potential to induce severe stress-reactions in organisms on land as well as in the sea. We have studied effects of short term sublethal concentrations of copper (Cu2+) and cadmium (Cd2+) on the reactive oxygen metabolism of the marine red macroalga Gracilaria tenuistipitata.
J, Collén, E, Pinto, M, Pedersén, P, Colepicolo   +3 more
openaire   +2 more sources

Comparison of ethanol production from Gracilaria fisheri and Gracilaria tenuistipitata cultivated in aquaculture system in Thailand

Journal of Applied Phycology, 2018
Several species of seaweeds contain higher amounts of polysaccharides and low lignin. These species can be sources for bioethanol production and can be utilized for other biochemical production. In Thailand, large amounts of the red seaweeds Gracilaria fisheri and G.
Nattawarit Nunraksa, Surichay Rattanasaensri, Jantana Praiboon, Anong Chirapart   +3 more
openaire   +1 more source

Biochemical and physiological responses of Gracilaria tenuistipitata under two different nitrogen treatments

Physiologia Plantarum, 1993
The influence of nitrogen on ribulose‐1.5‐bisphosphate carboxylase/oxygenase (Rubisco. EC 4.1.1.39) content is poorly understood in macroalgae. N‐deficient Gracilaria tenuistipitata Zhang et Xia var. liui was cultivated in the laboratory under constant light intensity and temperature. Biochemical and physiological variables were monitored after a high (
María J, García-Sánchez, José A, Fernández, F X, Niell   +2 more
openaire   +2 more sources