Results 1 to 10 of about 268,777 (202)

Diagnóstico de los impactos ambientales antropogénicos presentes en un Departamento de Colombia

Investigación e Innovación en Ingenierías, 2022
Objetivo: realizar un diagnóstico ambiental del complejo cenagoso de Santiago Apóstol CCSA, incluyendo el Arroyo Grande de Corozal, situado en el Departamento de Sucre, Colombia, determinando las principales presiones antropogénicas que impactan la ...
Camila Andrea Sánchez Cruz, Jaime Eduardo Gutiérrez Fonseca, Nohora Efigenia Gutiérrez Hoyos   +2 more
doaj   +1 more source

New insights into raceway cultivation of Euglena gracilis under long-term semi-continuous nitrogen starvation

Scientific Reports, 2023
This study aimed to investigate the physiological responses of Euglena gracilis (E. gracilis) when subjected to semicontinuous N-starvation (N−) for an extended period in open ponds. The results indicated that the growth rates of E. gracilis under the N− 
Ranjith Kumar Bakku, Yoshimasa Yamamoto, Yu Inaba, Taro Hiranuma, Enrico Gianino, Lawi Amarianto, Waleed Mahrous, Hideyuki Suzuki, Kengo Suzuki   +8 more
doaj   +1 more source

Methane production from Sargassum muticum: effects of seasonality and of freshwater washes

Energy and Built Environment, 2021
Biogas production from Sargassum muticum, an invasive seaweed species to Europe, is hampered by low methane (CH4) yields during anaerobic digestion (AD), but causes are unclear. This research is the first to demonstrate the impact of extensive freshwater
Supattra Maneein, John J. Milledge, Patricia J. Harvey, Birthe V. Nielsen   +3 more
doaj   +1 more source

Physiochemical and molecular responses of the diatom Phaeodactylum tricornutum to illumination transitions

Biotechnology for Biofuels and Bioproducts, 2023
Background Light is a key regulatory factor for photosynthesis and metabolism of microalgae. The diatom Phaeodactylum tricornutum is capable of exhibiting metabolic flexibility in response to light fluctuations.
Wei Ding, Ying Ye, Lihua Yu, Meijing Liu, Jin Liu   +4 more
doaj   +1 more source

The oleaginous astaxanthin-producing alga Chromochloris zofingiensis: potential from production to an emerging model for studying lipid metabolism and carotenogenesis

Biotechnology for Biofuels, 2021
The algal lipids-based biodiesel, albeit having advantages over plant oils, still remains high in the production cost. Co-production of value-added products with lipids has the potential to add benefits and is thus believed to be a promising strategy to ...
Yu Zhang, Ying Ye, Fan Bai, Jin Liu
doaj   +1 more source

Characterization of fatty acid desaturases reveals stress-induced synthesis of C18 unsaturated fatty acids enriched in triacylglycerol in the oleaginous alga Chromochloris zofingiensis

Biotechnology for Biofuels, 2021
Background The green microalga Chromochloris zofingiensis is capable of producing high levels of triacylglycerol rich in C18 unsaturated fatty acids (UFAs). FA desaturation degree is regulated by FA desaturases (FADs).
Tao Wu, Lihua Yu, Yu Zhang, Jin Liu
doaj   +1 more source

The Fucoxanthin Chlorophyll a/c-Binding Protein in Tisochrysis lutea: Influence of Nitrogen and Light on Fucoxanthin and Chlorophyll a/c-Binding Protein Gene Expression and Fucoxanthin Synthesis

Frontiers in Plant Science, 2022
We observed differences in lhc classification in Chromista. We proposed a classification of the lhcf family with two groups specific to haptophytes, one specific to diatoms, and one specific to seaweeds.
Anne Pajot, Johann Lavaud, Gregory Carrier, Matthieu Garnier, Bruno Saint-Jean, Noémie Rabilloud, Caroline Baroukh, Jean-Baptiste Bérard, Olivier Bernard, Luc Marchal, Elodie Nicolau   +10 more
doaj   +1 more source

Cobalamin Scarcity Modifies Carbon Allocation and Impairs DMSP Production Through Methionine Metabolism in the Haptophyte Microalgae Tisochrysis lutea

Frontiers in Marine Science, 2020
Cobalamin (vitamin B12) is a cobalt-containing enzymatic cofactor involved in methionine synthesis. Provided only by select bacteria and archaea in marine systems, this vitamin is known to limit primary production in different oceanic areas ...
Charlotte Nef, Céline Henry, Élodie Nicolau, Jean-Baptiste Bérard, Fabienne Hervé, Amandine M. N. Caruana, Raymond Kaas, Francis Mairet, Matthieu Garnier   +8 more
doaj   +1 more source

Novel insights into salinity-induced lipogenesis and carotenogenesis in the oleaginous astaxanthin-producing alga Chromochloris zofingiensis: a multi-omics study

Biotechnology for Biofuels, 2020
Background Chromochloris zofingiensis, a freshwater alga capable of synthesizing both triacylglycerol (TAG) and astaxanthin, has been receiving increasing attention as a leading candidate producer.
Xuemei Mao, Yu Zhang, Xiaofei Wang, Jin Liu   +3 more
doaj   +1 more source

Interaction of Naturally Occurring Phytoplankton with the Biogeochemical Cycling of Mercury in Aquatic Environments and Its Effects on Global Hg Pollution and Public Health

Microorganisms, 2023
The biogeochemical cycling of mercury in aquatic environments is a complex process driven by various factors, such as ambient temperature, seasonal variations, methylating bacteria activity, dissolved oxygen levels, and Hg interaction with dissolved ...
Zivan Gojkovic, Samuel Simansky, Alain Sanabria, Ivana Márová, Inés Garbayo, Carlos Vílchez   +5 more
doaj   +1 more source