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Bibliographic Details
Main Authors: Wu, Shijie, Mi, Tiezhu, Zhen, Yu, Yu, Elizabeth K, Wang, Fuwen, Yu, Zhigang, Mock, Timothy D
Format: Dataset Open Access
Language:en
Published: PANGAEA 2021
Subjects:
Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Bacteria; Bicarbonate ion; Bottles or small containers/Aquaria (<20 L); Calcite saturation state; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbon, organic, particulate, per cell; Carbon, organic, particulate, standard deviation; Carbonate ion; Carbonate system computation flag; Carbon dioxide; Catalase activity, per protein mass; Chlorophyll a, standard deviation; Chlorophyll a per cell; Cyanobacteria; Exopolysaccharides; Exopolysaccharides, standard deviation; Experiment duration; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Growth rate; Growth rate, standard deviation; Laboratory experiment; Laboratory strains; Maximum photochemical quantum yield of photosystem II; Maximum photochemical quantum yield of photosystem II, standard deviation; Nitrogen, organic, particulate, per cell; Nitrogen, organic, particulate, per cell, standard deviation; Not applicable; OA-ICC; Ocean acidification; Ocean Acidification International Coordination Centre; Other metabolic rates; Other studied parameter or process; Partial pressure of carbon dioxide, standard deviation; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); Pelagos; pH, NBS scale; pH, standard deviation; pH, total scale; Phytoplankton; Potentiometric; Potentiometric titration; Reactive oxygen species; Reactive oxygen species, standard deviation; Registration number of species; Salinity; Single species; Species; Superoxide dismutase activity, unit per protein mass; Temperature, water; Treatment; Trichodesmium erythraeum; Type; Uniform resource locator/link to reference
Online Access:https://doi.org/10.1594/PANGAEA.930305
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Table of Contents:
  • The diazotrophic cyanobacterium Trichodesmium is thought to be a major contributor to the new N in the parts of the oligotrophic, subtropical and tropical oceans. In this study physiological and biochemical methods and transcriptome sequencing were used to investigate the influences of ocean acidification (OA) on Trichodesmium erythraeum (T. erythraeum). We presented evidence that OA caused by CO2 slowed the growth rate and physiological activity of T. erythraeum. OA led to reduced development of proportion of the vegetative cells into diazocytes which included up‐regulated genes of nitrogen fixation. Reactive oxygen species (ROS) accumulation was increased due to the disruption of photosynthetic electron transport and decrease in antioxidant enzyme activities under acidified conditions. This study showed that OA increased the amounts of (exopolysaccharides) EPS in T. erythraeum, and the key genes of ribose‐5‐phosphate (R5P) and glycosyltransferases (Tery_3818) were up‐regulated. These results provide new insight into how ROS and EPS of T. erythraeum increase in an acidified future ocean to cope with OA‐imposed stress.

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