We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Metabolism and Transcriptome Stress in Diatom Phaeodactylum tricornutum for Value‐Added Products
AI summary Read the abstract
Researchers investigated how microplastic exposure acts as an environmental stressor on the marine diatom Phaeodactylum tricornutum, examining transcriptomic and metabolic responses including upregulation of genes involved in lipid and fucoxanthin biosynthesis that could be leveraged for value-added bioproduct applications.
Phaeodactylum tricornutum is one of the most ecologically successful diatoms dwelling in the oceans. Unlike other diatoms, it has the capability to exist in different morphotypes and cytostructural adaptations that may be stimulated by environmental conditions. Lipid and pigment mainly fucoxanthin aggregation in algae diatoms is often stimulated due to environmental stress manifested at the genomic level. Environmental stress includes nitrogen starvation, phosphate depletion, high salinity conditions, light stress, and even pollutants like microplastics. 3-Ketoacyl-CoA synthase and fatty acid elongase 2 are the two genes concerned in fatty acid elongation that confirmed better transcription stages in high-salt situations. The lipidome profile is characterized by the increase of lipid levels; for example, triacylglycerol (TAG) is observed in phosphorus starved cells of P. tricornutum . The most prevalent finding from transcriptome analysis of algal cells undergoing nitrogen starvation was lipid accumulation as a consequence of remodeling central metabolism. Genes of P. tricornutum are involved in chlorophyll biosynthesis pathway, and certain genes are expressed to produce light-harvesting proteins, which are more sensitive to light stress. There are several treatments to upregulate the mRNA of encoding antenna proteins involved in light protection. Due to the existence of complete transcriptomics, proteomics and genomics databases, this diatom species is highly suitable for studying effects of oxidation, mild stress, nickel and naphthenic environment stress and surrounding physiochemical and light conditions for enhancement of value added products.
More Papers Like This
Hormesis-like growth and photosynthetic physiology of marine diatom Phaeodactylum tricornutum Bohlin exposed to polystyrene microplastics
AI summary Read the abstract
Researchers found that polystyrene microplastics can either harm or inadvertently benefit marine algae growth depending on how crowded the algae population is, suggesting that microplastic toxicity in ocean ecosystems is more context-dependent and complex than previously assumed.
Physiological responses and altered halocarbon production in Phaeodactylum tricornutum after exposure to polystyrene microplastics
AI summary Read the abstract
Exposure to microplastics altered physiological responses and halocarbon production in the marine diatom Phaeodactylum tricornutum, with implications for oceanic emissions of ozone-depleting brominated substances.
Effects of microplastics on growth, phenanthrene stress, and lipid accumulation in a diatom, Phaeodactylum tricornutum
AI summary Read the abstract
Marine diatom Phaeodactylum tricornutum was exposed to micrometer-scale polyethylene and PVC particles, finding no effect on algal growth or lipid accumulation but a protective effect against phenanthrene toxicity at short-term exposure. Machine learning analysis of 165 datasets identified particle size as a key factor modulating the effects of microplastics on marine microalgae.
The effect of microplastics pollution in microalgal biomass production: A biochemical study
AI summary Read the abstract
Scientists exposed the marine microalga Phaeodactylum tricornutum to polystyrene microplastics and found that both short- and long-term exposure at environmentally relevant concentrations disrupted biochemical composition including proteins, carbohydrates, and lipids.
Membrane fingerprints and morphotype shifts in Phaeodactylum tricornutum co-exposed to cadmium and PBAT macroplastics as ecotoxicological indicators.
AI summary Read the abstract
Researchers co-exposed the marine diatom Phaeodactylum tricornutum to cadmium and biodegradable PBAT plastic, finding that PBAT degradation products shift cell morphotype toward an oval stress form and increase light-harvesting pigments—effects detectable at lower concentrations than those disrupting photosynthesis—establishing membrane composition and morphotype as sensitive indicators of combined metal-plastic pollution.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.