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Flow Cytometry-based Measurement of Reactive Oxygen Species in Cyanobacteria

Authors: Soumila Mondal and Shailendra P. Singh, date: 05/20/2022, view: 324, Q&A: 0

[Abstract]

Cyanobacteria are Gram-negative oxygen-producing photosynthetic bacteria that are useful in the pharmaceutical and biofuel industries. Monitoring of oxidative stress under fluctuating environmental conditions is important for determining the fitness, survival, and growth of cyanobacteria in the laboratory as well as in large scale cultivation

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Production and Bioassay of a Diffusible Factor that Induces Gametophyte-to-Sporophyte Developmental Reprogramming in the Brown Alga Ectocarpus

Authors: Haiqin Yao, Delphine Scornet, Yacine Badis, Akira F. Peters, Murielle Jam, Cecile Hervé, Philippe Potin, Susana M. Coelho and J. Mark Cock, date: 09/20/2020, view: 2733, Q&A: 0

[Abstract] The brown alga Ectocarpus has a haploid-diploid life cycle that involves alternation between two multicellular generations, the sporophyte and the gametophyte. Life cycle generation is not determined by ploidy but by a genetic system that includes two different three amino acid loop extension homeodomain transcription factors called ...

PEG-mediated, Stable, Nuclear and Chloroplast Transformation of Cyanidioschizon merolae

Authors: Maksymilian Zienkiewicz, Tomasz Krupnik, Anna Drożak and Kinga Kania, date: 09/05/2019, view: 3086, Q&A: 0

[Abstract] The ability to achieve nuclear or chloroplast transformation in plants has been a long standing goal, especially in microalgae research. Over past years there has been only little success, but transient and stable nuclear transformation has been achieved in multiple species. Our newly developed method allows for relatively simple transformation of ...

Multiple Modification of Chromosomal Loci Using URA5.3 Selection Marker in the Unicellular Red Alga Cyanidioschyzon merolae

Authors: Tokiaki Takemura, Sousuke Imamura, Yuki Kobayashi and Kan Tanaka, date: 04/05/2019, view: 4294, Q&A: 0

[Abstract] The unicellular red alga Cyanidioschyzon merolae has been used as a eukaryotic photosynthetic model for various basic and applied studies. Although the nuclear genome of C. merolae can be modified by homologous recombination with exogenously introduced DNA, it has been difficult to modify multiple chromosome loci within the same ...

Top Starch Plating Method for the Efficient Cultivation of Unicellular Red Alga Cyanidioschyzon merolae

Authors: Tokiaki Takemura, Yuki Kobayashi, Sousuke Imamura and Kan Tanaka, date: 02/20/2019, view: 5073, Q&A: 0

[Abstract] The unicellular red alga Cyanidioschyzon merolae has been used as a model photosynthetic eukaryote for various basic and applied studies, and several of these molecular genetics techniques have been reported. However, there are still improvements to be made concerning the plating method. The conventional plating method often generates ...

Determination of Storage (Starch/Glycogen) and Total Saccharides Content in Algae and Cyanobacteria by a Phenol-Sulfuric Acid Method

Authors: Tomáš Zavřel, Petra Očenášová, Maria A. Sinetova and Jan Červený, date: 08/05/2018, view: 8234, Q&A: 1

[Abstract] This is a protocol for quantitative determination of storage and total carbohydrates in algae and cyanobacteria. The protocol is simple, fast and sensitive and it requires only few standard chemicals. Great advantage of this protocol is that both storage and total saccharides can be determined in the cellular pellets that were already used for ...

Genome Editing in Diatoms Using CRISPR-Cas to Induce Precise Bi-allelic Deletions

Authors: Amanda Hopes, Vladimir Nekrasov, Nigel Belshaw, Irina Grouneva, Sophien Kamoun and Thomas Mock, date: 12/05/2017, view: 11364, Q&A: 1

[Abstract] Genome editing in diatoms has recently been established for the model species Phaeodactylum tricornutum and Thalassiosira pseudonana. The present protocol, although developed for T. pseudonana, can be modified to edit any diatom genome as we utilize the flexible, modular Golden Gate cloning system. The main steps include ...

ROS Detection in Botryococcus braunii Colonies with CellROX Green Reagent

Authors: Edmundo Lozoya-Gloria, Ivette Cornejo-Corona, Hem R. Thapa, Daniel R. Browne and Timothy P. Devarenne, date: 08/20/2017, view: 7397, Q&A: 0

[Abstract] We analyzed the reactive oxygen species (ROS) accumulation in the colony-forming green microalga Botryococcus braunii in response to several stress inducers such as NaCl, NaHCO₃, salicylic acid (SA), methyl jasmonate, and acetic acid. A staining assay using the fluorescent dye CellROX Green was used. CellROX Green is a ...

Determination of Reduced and Total Glutathione Content in Extremophilic Microalga Galdieria phlegrea

Authors: Giovanna Salbitani, Claudia Bottone and Simona Carfagna, date: 07/05/2017, view: 18877, Q&A: 3

[Abstract] Glutathione is an important molecule involved in the primary and secondary metabolism of all organisms. The Glutathione redox status is an indicator of the cellular redox state. Therefore, it is important to have precise methods on hand to determine the glutathione redox status in the cell. In this protocol, we describe an improved ...

Cryopreservation Protocol for Chlamydomonas reinhardtii

Authors: Duanpeng Yang and Weiqi Li, date: 11/20/2016, view: 7869, Q&A: 0

[Abstract] Cryopreservation is commonly used for storing viable cells, tissues, organs or organisms at ultralow temperatures, and usually involves immersion in liquid nitrogen at -196 °C. Here we provide a detailed cryopreservation protocol for C. reinhardtii based on Crutchfield’s work (Crutchfield et al., 1999), with minor changes (Yang ...

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