Bacterial communities on giant kelp in the Magellan Strait: Geographical and intra-thallus patterns.

The giant kelp Macrocystis pyrifera is categorized as a keystone species, forming highly productive forests that provide ecosystem services and host a remarkable marine biodiversity of macro and microorganisms. The association of microorganisms with the algae is close and can be functionally interdependent. The Magellan Strait, a natural marine passage between the Atlantic and Pacific oceans, harbours extensive giant kelp forests.

Genetic engineering of microalgae for enhanced lipid production.

Microalgae have the potential to become microbial cell factories for lipid production. Their ability to convert sunlight and CO into valuable lipid compounds has attracted interest from cosmetic, biofuel, food and feed industries. In order to make microalgae-derived products cost-effective and commercially competitive, enhanced growth rates and lipid productivities are needed, which require optimization of cultivation systems and strain improvement.

Susceptibility to Insecticides and Natural Infection in Aedes aegypti: An Initiative to Improve the Mosquito Control Actions in Boyacá, Colombia.

Background: Integrated management strategies for dengue prevention and control have been the main way to decrease the transmission of arboviruses transmitted by in Colombia. However, the increase of chikungunya (CHIKV), Zika, and dengue (DENV) fever cases suggests deficiencies in vector control strategies in some regions from this country.

Objective: This work aimed to establish a baseline susceptibility profile of to insecticides, determine the presence of mutations associated with resistance to pyrethroids, and detect natural arbovirus infection in this vector from Moniquirá - Boyacá, one of the most endemic cities in Colombia.

Effect of Single and Combined Expression of , and on Lipid Accumulation and Composition in .

Microalgal lipids are promising feedstocks for food and biofuels. Since lipid production by microalgae is not yet economically feasible, genetic engineering is becoming a promising strategy to achieve higher lipid accumulation and productivities. Enzymes involved in the Kennedy pathway such as glycerol-3-phosphate acyltransferase (GPAT), lysophosphatidic acid acyltransferase (LPAT), and diacylglycerol acyltransferase (DGAT) catalyze key steps in the formation of triacylglycerol, which is the main constituent of lipids in .

Use of cellulolytic marine bacteria for enzymatic pretreatment in microalgal biogas production.

In this study, we designed and evaluated a microalgal pretreatment method using cellulolytic bacteria that naturally degrades microalgae in their native habitat. Bacterial strains were isolated from each of two mollusk species in a medium containing 1% carboxymethyl cellulose agar. We selected nine bacterial strains that had endoglucanase activity: five strains from Mytilus chilensis, a Chilean mussel, and four strains from Mesodesma donacium, a clam found in the Southern Pacific.

Review of adjunctive glutamate antagonist therapy in the treatment of catatonic syndromes.

Catatonia is a common neuropsychiatric syndrome which may arise from GABA-A hypoactivity, dopamine (D2) hypoactivity,and possibly glutamate NMDA hyperactivity. Amantadine and memantine have been reported as effective treatments for catatonia in selected cases, and probably mediate the presence of catatonic signs and symptoms through complex pathways involving glutamate antagonism. The authors identified 25 cases of catatonia treated with either agent.