Article
Microbiology
Penelope A. Ajani, Katherina Petrou, Michaela E. Larsson, Daniel A. Nielsen, Joel Burke, Shauna A. Murray
Summary: The study found significant intraspecific morphological and metabolic trait variability in marine phytoplankton, predominantly within species rather than between species. There were only a few traits that showed a latitudinal trend.
ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Chemistry, Physical
Chang Su, Zheng Cao, Jiahao Liu, Xiaojie Sun, Kaijin Qiu, Yuzhi Mu, Xin Cong, Xiaoye Wang, Xiguang Chen, Nan Jia, Chao Feng
Summary: We developed a Ca2+ modified diatom biosilica-based hemostat (DBp-Ca2+) with a hierarchical porous structure. The unique porous size arrangement of DBp-Ca2+ allows for selective adsorption during coagulation process, resulting in rapid hemorrhage control. In vitro and in vivo studies confirmed that DBp-Ca2+ has high porosity, water absorption, protein absorption, and can accelerate blood exchange and reduce thrombosis time.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Plant Sciences
Neri Fattorini, Uwe G. Maier
Summary: This study investigated the complex structure of diatom frustule and the cellular targeting signals of cingulin proteins in the frustule. The study identified new frustule proteins and explored the impact of gene expression regulation on the cellular localization of one cingulin protein.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Multidisciplinary Sciences
Christoph Heintze, Iaroslav Babenko, Jirina Zackova Suchanova, Alastair Skeffington, Benjamin M. Friedrich, Nils Kroeger
Summary: Biomineral-forming organisms produce inorganic materials with complex morphologies. This study focused on diatoms and identified new biomineralization proteins involved in silica biosynthesis. Knocking out specific genes led to aberrations in silica biogenesis, suggesting a mechanism of liquid-liquid phase separation for pore pattern morphogenesis.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Ananya Agarwal, Orly Levitan, Helena Cruz de Carvalho, Paul G. Falkowski
Summary: Unlike most plants, unicellular algae can adapt to changes in irradiance within a few hours to days through an enigmatic signaling pathway that coordinates changes in plastid and nuclear gene expression. Functional studies on the model diatom, Phaeodactylum tricornutum, identified two potential signal transduction molecules responsible for photoacclimation.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Environmental Sciences
Giorgio Maria Vingiani, Serena Leone, Daniele De Luca, Marco Borra, Alan D. W. Dobson, Adrianna Ianora, Pasquale De Luca, Chiara Lauritano
Summary: Diatoms are photosynthetic organisms with potential applications in bioremediation, capable of degrading pollutants. In this study, two putative DBP hydrolases were identified in the transcriptome of a diatom species, and their structures and interactions with the substrate were analyzed. The expression levels of these hydrolases increased in response to DBP exposure, indicating their potential involvement in phthalates degradation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Marine & Freshwater Biology
Raya Bhattacharjya, Pankaj Kumar Singh, Abhishek Saxena, Archana Tiwari
Summary: This study focused on the variation in carbon utilization and accumulation of reserve compounds in the diatom C. gracilis at different growth stages, as well as the impact of two different sources of silica. The results showed that nano-fabricated silica had a higher growth rate and cell number, as well as higher biomass and lipid productivity, compared to meta silicate. The study also found that the maximum production of extracellular polymeric substances and storage lipid content occurred during the late exponential and stationary phases.
JOURNAL OF SEA RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
Qian Tian, Dong Liu, Peng Yuan, Mengyuan Li, Weifeng Yang, Jieyu Zhou, Huihuang Wei, Junming Zhou, Haozhe Guo
Summary: This study provides visible evidence of the occurrence of structural aluminum in living diatom biogenic silica, providing insights into the biogeochemical behaviors of aluminum in the marine environment. The findings highlight the significant contribution of marine diatoms to the global marine biogeochemical cycle of aluminum.
Article
Optics
Yue-Xin Yin, Xiao-Jie Yin, Xiao-Pei Zhang, Guan-Wen Yan, Yue Wang, Yuan-Da Wu, Jun-Ming An, Liang-Liang Wang, Da-Ming Zhang
Summary: This paper demonstrates ultrahigh-Q factor racetrack microring resonators based on silica planar lightwave circuits (PLCs) platform, achieving a loaded ultrahigh-Q factor Q(load) of 1.83 x 10(6). The packaged MRRs show great potential in optical communications as filters and are suitable for monolithic integration and hybrid integration with other devices.
Article
Plant Sciences
Ginga Shimakawa, Emi Yashiro, Yusuke Matsuda
Summary: Diatoms are important phytoplankton that contribute to global primary production. They have a unique chloroplast morphology, particularly the pyrenoid. The physiological significance of this structure is not well understood. Researchers successfully measured the local pH in different subcellular compartments of diatoms by expressing a pH-sensitive green fluorescent protein, and found that the periplastidal compartment and pyrenoid matrix were more acidic than other areas.
PHYSIOLOGIA PLANTARUM
(2023)
Article
Materials Science, Multidisciplinary
Guangting Xiong, Yahong Jin, Kaiyuan Deng, Lifang Yuan, Haoyi Wu, Guifang Ju, Li Chen, Yihua Hu
Summary: The use of LED lighting can be harmful to human eye health due to prolonged exposure to blue radiation. This study demonstrates a new strategy for human-centric lighting by using Cs2HfCl6:Te perovskite as a phosphor to eliminate blue radiation while emitting efficient bright yellow light. The perovskite exhibits excellent thermal and environmental stability, making it a promising candidate for advancing human-centric lighting.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Engineering, Environmental
C. M. Vineeth Kumar, V. Karthick, D. Inbakandan, Eldon R. Rene, T. Stalin Dhas, M. Ravi, P. Sowmiya, C. G. Anjali Das
Summary: The study examined the toxicity of selenium nanoparticles (SeNPs) on the marine diatom Chaetoceros gracilis through laboratory experiments, revealing significant cellular alterations and damage, including membrane damage and morphological distortion. This highlights the potential environmental impact of SeNPs on lower trophic organisms.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Biotechnology & Applied Microbiology
Yoshiaki Maeda, Ryosuke Kobayashi, Kahori Watanabe, Tomoko Yoshino, Chris Bowler, Mitsufumi Matsumoto, Tsuyoshi Tanaka
Summary: This study successfully revealed the chromosomal structure of the F. solaris genome and identified putative consensus motifs in diatom centromeres, providing valuable information for further engineering the oleaginous phenotype of F. solaris.
MARINE BIOTECHNOLOGY
(2022)
Article
Genetics & Heredity
Yuki Hongo, Takeshi Hano, Haruo Yamaguchi, Yuji Tomaru
Summary: The planktonic diatom Chaetoceros tenuissimus forms blooms in coastal surface waters with deficient dissolved inorganic phosphorus (P). In this study, the researchers compared whole transcripts and metabolites of Chaetoceros tenuissimus under P-deficient and P-sufficient conditions. They found that under P-deficient conditions, cell numbers and photosynthetic activities decreased, and genes related to the Calvin cycle and glycolysis/gluconeogenesis were downregulated. Genes related to phospholipid degradation and nonphospholipid synthesis were upregulated, suggesting a potential survival strategy for C. tenuissimus in P-deficient conditions.
Article
Cell Biology
Hui Shao, Wenmin Huang, Luisana Avilan, Veronique Receveur-Brechot, Carine Puppo, Remy Puppo, Regine Lebrun, Brigitte Gontero, Helene Launay
Summary: CP12 is a small chloroplast protein present in various photosynthetic organisms, with some features of intrinsically disorder protein family. Unlike other known CP12 proteins, the CP12 in diatoms is a dimer. These findings provide new insights into the role of CP12 in various stress conditions and expand the understanding of its functions beyond the regulation of the CBB cycle.
CELL COMMUNICATION AND SIGNALING
(2021)
