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Affinity for inorganic carbon of Gracilaria tenuistipitata cultured at low and high irradiance
Planta, 2000Regulation 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
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Limited acclimation of photosynthesis to blue light in the seaweed Gracilaria tenuistipitata
Physiologia Plantarum, 2002Changes 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 +3 more
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Current Organic Chemistry, 2015
Many algal extracts or algal bioactive ingredients have potential in suppressing cancer or different biological mechanisms. We previously found that aqueous extracts of Gracilaria tenuistipitata (AEGT) contained abundant antioxidants with protective effects against several reactive oxygen species (ROS) related ...
Chi-Chen Yeh +6 more
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Many algal extracts or algal bioactive ingredients have potential in suppressing cancer or different biological mechanisms. We previously found that aqueous extracts of Gracilaria tenuistipitata (AEGT) contained abundant antioxidants with protective effects against several reactive oxygen species (ROS) related ...
Chi-Chen Yeh +6 more
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Effect of inorganic carbon supply on the photosynthetic physiology of Gracilaria tenuistipitata
Planta, 1994Gracilaria tenuistipitata Zhang et Xia was cultured for 15 d at low, normal and high inorganic carbon concentrations under constant light, temperature and nutrient conditons. Carbonic anhydrase (CA; EC 4.2.1.1.) activity, ribulose-1,5-bisphosphate carboxylase/ oxygenase (Rubisco; EC 4.1.1.39) content, pigment content and C/N ratio were measured, and ...
Mar�aJ. Garc�a-S�nchez +2 more
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Responses of the macroalga Gracilaria tenuistipitata var. liui (Rhodophyta) to iron stress
Journal of Applied Phycology, 2000Chlorophyll (Chl), phycoerythrin (PE), total nitrogen (TN% dw) and Fein tissues were measured in Fe-deficient cultures of Gracilariatenuistipitata var. liui over a period of 60 days. 55Fe uptakeand photosynthetic carbon fixation (NaH14CO3) werecompared in Fe-rich and Fe-deficient cultures and analyzed the effects ofFe-deficiency on the ultrastructure ...
Jingwen Liu +3 more
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Plant Science, 2002
The red macroalga Gracilaria tenuistipitata has a plasma membrane redox system easily assayed as a ferricyanide reductase (EC 1.6.99.13) activity. This activity is associated with acidification of the medium and is modulated by light conditions. G. tenuistipitata thalli adapt to light conditions by changes affecting their morphology, physiology and ...
Esther Melgarejo +3 more
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The red macroalga Gracilaria tenuistipitata has a plasma membrane redox system easily assayed as a ferricyanide reductase (EC 1.6.99.13) activity. This activity is associated with acidification of the medium and is modulated by light conditions. G. tenuistipitata thalli adapt to light conditions by changes affecting their morphology, physiology and ...
Esther Melgarejo +3 more
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Planta, 1992
The mechanism of inorganic-carbon (Ci) accumulation in the red seaweed Gracilaria tenuistipitata Zhang et Xia has been investigated. Extracellular and intracellular carbonic-anhydrase (CA) activities have been detected. Photosynthetic O2 evolution in thalli and protoplasts of G.
Haglund, K +4 more
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The mechanism of inorganic-carbon (Ci) accumulation in the red seaweed Gracilaria tenuistipitata Zhang et Xia has been investigated. Extracellular and intracellular carbonic-anhydrase (CA) activities have been detected. Photosynthetic O2 evolution in thalli and protoplasts of G.
Haglund, K +4 more
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Journal of Applied Phycology, 2012
Gracilaria edulis and Gracilaria tenuistipitata var liui are agarophytes with high commercial value which are currently cultivated in countries like India and Thailand. They have great potential for mariculture in Malaysia. Experiments were carried out to study carpospore germination and determine the effects of irradiance and salinity on the growth of
Chew-Hock Yu +2 more
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Gracilaria edulis and Gracilaria tenuistipitata var liui are agarophytes with high commercial value which are currently cultivated in countries like India and Thailand. They have great potential for mariculture in Malaysia. Experiments were carried out to study carpospore germination and determine the effects of irradiance and salinity on the growth of
Chew-Hock Yu +2 more
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Journal of Applied Phycology, 2018
The red seaweeds are generally known to have a high content of polysaccharides and low content of lignin. They can be used as a bioethanol feedstock and to produce biochemicals. This study was conducted to examine the pretreatment conditions to improve the production of fermentable sugars and by-products from Gracilaria fisheri and Gracilaria ...
Nattawarit Nunraksa +3 more
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The red seaweeds are generally known to have a high content of polysaccharides and low content of lignin. They can be used as a bioethanol feedstock and to produce biochemicals. This study was conducted to examine the pretreatment conditions to improve the production of fermentable sugars and by-products from Gracilaria fisheri and Gracilaria ...
Nattawarit Nunraksa +3 more
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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 S. Yokoya +2 more
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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 S. Yokoya +2 more
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