Article
Environmental Sciences
Nagwa El Agawany, Mona Kaamoush, Ahmed El-Zeiny, Mahmoud Ahmed
Summary: The study found that low concentrations of the three heavy metals have a stimulatory effect on protein content of marine unicellular green alga Dunaliella tertiolecta, but increasing levels of heavy metals lead to inhibitory effect on protein synthesis. It is recommended to encourage site selection of optimal marine environments suitable for the proliferation of marine algae rich in protein content.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Biotechnology & Applied Microbiology
Tomo-O Watsuji, Angelica Naka, Yasuhiko Morita, Midori Kurahashi
Summary: The recovery rates of normal cells and carotenoid-accumulating cells in gravity sedimentation experiments were influenced by temperature, salinity, and time. However, the initial dissolved oxygen concentration in the culture media did not significantly affect the recovery rates. Gravity sedimentation at the optimal growth temperature was shown to be a cost-effective method for harvesting Dunaliella salina.
ANNALS OF MICROBIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Chin-Feng Tsai, Hui-Wen Lin, Jiuan-Miaw Liao, Ke-Min Chen, Jen-Wei Tsai, Chia-Sung Chang, Chia-Yu Chou, Hsing-Hui Su, Pei-Hsun Liu, Ya-Chun Chu, Yi-Hsin Wang, Meilin Wang, Shiang-Suo Huang
Summary: This study found that D. salina extract can alleviate myocardial ischemia/reperfusion (I/R) injury and exert anti-inflammatory and anti-apoptotic effects through inhibiting TLR4-mediated signaling pathway, while reducing autophagy activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biotechnology & Applied Microbiology
Hexin Lv, Minjae Kim, Seunghye Park, Kwangryul Baek, Hyeonjun Oh, Juergen E. W. Polle, EonSeon Jin
Summary: Gene expression and functional analysis of Dunaliella salina cells exposed to short-term hyperosmotic stress revealed shared and unique metabolic pathways between salt and glycerol stress conditions, providing insights for further physiological responses to osmotic shock.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Biotechnology & Applied Microbiology
Bo Huang, Gaopin Qu, Yulong He, Jinli Zhang, Jianhua Fan, Tao Tang
Summary: This study found that Dunaliella salina, a marine algal strain, can tolerate high concentrations of CO2 and oxidative stress. This has significant implications for using microalgae to reduce CO2 emissions.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Engineering, Chemical
Xiaoyu Jiang, Liu Yang, Yinghui Wang, Fajun Jiang, Junxiang Lai, Kailin Pan
Summary: This study investigates the effects of selenium on Dunaliella salina and its molecular response. The results show that at low selenium concentrations, D. salina shortens its cell growth cycle, while at high concentrations, it significantly inhibits cell growth. The study also reveals that D. salina effectively balances energy demand and production under selenium stress, with upregulated proteins involved in stress responses, amino acid metabolism, and energy production pathways.
Article
Biotechnology & Applied Microbiology
Yanhong Lan, Yao Song, Yihan Guo, Dairong Qiao, Yi Cao, Hui Xu
Summary: The overexpression of the DsLCYB gene significantly enhances the total carotenoid content in Dunaliella salina without reducing the production of α-carotene. Red light conditions promote the accumulation of β-carotene in this alga.
JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Analytical
Ronald A. Glabonjat, Elliott G. Duncan, Frank Krikowa, Kevin A. Francesconi, William A. Maher
Summary: This study investigated the biosynthetic pathways of arsenosugars and arsensolipids from arsenate in the unicellular alga Dunaliella tertiolecta. The results showed that the alga rapidly methylated arsenate to dimethylarsinate (DMA), which acted as a precursor for the formation of arsenosugars and arsenolipids. These findings provide important insights into the cycling and biotransformation of arsenic in marine ecosystems.
ENVIRONMENTAL CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Frederic Chaux-Jukic, Samuel O'Donnell, Rory J. Craig, Stephan Eberhard, Olivier Vallon, Zhou Xu
Summary: The study comprehensively describes the subtelomere architecture of the 17 chromosomes of Chlamydomonas reinhardtii and identifies three main repeated elements in subtelomeres. Analysis shows that Sultan elements underwent segmental duplications within subtelomeres and rearranged between them at a lower frequency. Other green algae also exhibit species-specific repeated elements shared across subtelomeres.
NUCLEIC ACIDS RESEARCH
(2021)
Article
Plant Sciences
Haiyan Ma, Xiaoying Wu, Ziwang Wei, Liang Zhao, Zhongze Li, Qing Liang, Jie Zheng, Yu Wang, Yanhua Li, Linfei Huang, Qiang Hu, Danxiang Han
Summary: The study revealed that a type of enzyme in microalgae, DGAT, may lose its original function and instead function as another enzyme, LPAAT. The HpDGTT2 identified in the experiment was found to act as a LPAAT, regulating lipid biosynthesis, which could help to elucidate the structure-function relationship of this group of enzymes.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Biotechnology & Applied Microbiology
Ina J. Andresen, Russell J. S. Orr, Kamran Shalchian-Tabrizi, Jon Brate
Summary: Acetabularia acetabulum is a single-celled green alga with highly complex cellular morphology. Differential distribution of gene products within the cell may play a crucial role in determining the cell's functions, and specific subcellular localization of gene products might be an important mechanism behind morphogenesis in this gigantic cell.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2021)
Article
Food Science & Technology
Julia Teixe-Roig, Gemma Oms-Oliu, Isabel Odriozola-Serrano, Olga Martin-Belloso
Summary: This study aimed to evaluate the influence of emulsifier and oil concentration on the digestive stability of Dunaliella Salina-based nanoemulsions and their influence on digestibility and beta-carotene bioaccessibility. Results showed that coalescence observed in soybean lecithin nanoemulsion during digestion reduced the digestibility and bioaccessibility, while whey protein nanoemulsion increased the bioavailability of retinol due to enhanced beta-carotene absorption.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Biotechnology & Applied Microbiology
Zahra Bamary, Alireza Einali
Summary: The accumulation of free amino acids and their metabolism in Dunaliella sp. cells adapted to different salt levels were investigated. The study found that salt-adapted cells showed decreased density but increased concentrations of certain amino acids. The activities of enzymes involved in nitrogen metabolism and amino acid metabolizing enzymes were also increased under salt stress. Treatment with arginine improved cell density and led to different changes in amino acid accumulation depending on the salt concentration.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Hu Zhang, Liang Zhao, Yi Chen, Mianmian Zhu, Quan Xu, Mingcan Wu, Danxiang Han, Qiang Hu
Summary: Heterotrophically grown algal cells responded well to high light and nitrogen-limited conditions for lipid production, showing enhanced biomass and lipid productivity compared to photoautotrophically grown cells. Chlorophyll a fluorometry analysis revealed higher photosynthetic efficiency in heterotrophically grown cells, while transcriptomic analysis indicated regulation of genes related to photosynthesis and carbohydrate metabolism.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Eldad Afik, Toni J. B. Liu, Elliot M. Meyerowitz
Summary: A marine green alga, Caulerpa brachypus, demonstrates self-organisation by generating waves of chloroplasts that propagate throughout the organism. These waves are coupled to a self-sustained oscillator and entrained to light, and their morphology is affected by light temporal patterns. This research sheds light on the connection between biological oscillators, metabolism, and morphogenesis in this single-celled organism.
NATURE COMMUNICATIONS
(2023)