Diatom Ecophysiology: Crossing Signals on the Road to Recovery from Nutrient Deprivation

Thamatrakoln, Kimberlee

doi:10.1016/j.cub.2021.01.016

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…The water depth of this type of shallow turbid lake can determine light availability. In addition, the peak of algae biomass in spring is mainly due to the availability of nutrients and high light (Thamatrakoln, 2021). Meanwhile, the enormous growth of submerged plants shows that there is no photoinhibition at least before autumn.…”

Section: Key Factors Affecting Phytoplankton Dynamicsmentioning

confidence: 99%

Characteristics of Phytoplankton Community Structure and Indication to Water Quality in the Lake in Agricultural Areas

Huang

Shen

Zhang

et al. 2022

Front. Environ. Sci.

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In recent years, lakes’ water quality and quantity have been affected and damaged by agricultural activities. The sensitivity of phytoplankton to the hydrological environment can effectively indicate the health of the aquatic ecosystem and the change in water quality. Understanding the changes of phytoplankton communities in lakes contaminated by agriculture may contribute to determining the directions of protection of these water bodies and provide reference cases for wider research. It is found that there are 146 species, 63 genera, and 8 phyla of phytoplankton, including 57 species of Bacillariophyta, 46 species of Chlorophyta, 17 species of Cyanobacteria and Euglenophyta. The total abundance was changed successively with Bacillariophyta (75% in June), Cyanobacteria (50% in July–August), and Chlorophyta (75% in September–October). The total biomass decreased continuously over time. The biomass of Chlorophyta is highest in October (67.4%), and diatoms contribute the most biomass in other months (76.5%). The Redundancy analysis indicated that the main environmental factors affecting phytoplankton’s dynamic change are total salt, water temperature, total phosphorus, and 5-day biochemical oxygen demand. The phytoplankton can be divided into 21 functional groups. The MP group has the highest frequency, mainly distributed in the frequently stirred and turbid shallow water. Representative functional groups indicate the high degree of eutrophication and nutrient-rich conditions and the good associated environment for phytoplankton and slow water flow rate. With the seasonal change of agricultural irrigation and drainage, the water quality of Xinmiao Lake began to deteriorate from medium pollution in July and reached serious pollution in October finally. Furthermore, this research discovered that the risk of cyanobacteria bloom is high in summer, primarily when thermal stratification occurs. This study provides necessary information for understanding and predicting the changes of the phytoplankton community caused by the increase of nutrients, human disturbance, and temperature conditions in eutrophic lakes in agricultural areas.

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Section: Key Factors Affecting Phytoplankton Dynamicsmentioning

confidence: 99%

Characteristics of Phytoplankton Community Structure and Indication to Water Quality in the Lake in Agricultural Areas

Huang

Shen

Zhang

et al. 2022

Front. Environ. Sci.

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“…The impact of global climate change intensifies the importance of understanding their response to grazing pressure, crucial for marine ecosystem conservation. Phaeodactylum Tricornutum ( Bowler et al., 2008 ), a model organism for diatoms, showcases a diverse range of responses to various environmental stressors, including nitrogen and phosphorus deprivation and heavy metal ion exposure ( Thamatrakoln, 2021 ). Moreover, it affects the behavior of its predators ( Kim et al., 2022 ), such as copepods, altering their grazing behavior and consequently, the marine food web.…”

Section: Introductionmentioning

confidence: 99%

Multi-omic insights into the cellular response of Phaeodactylum tricornutum (Bacillariophyta) strains under grazing pressure

Liu,

Li,

Yang

et al. 2024

Front. Plant Sci.

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Background/AimsPhaeodactylum tricornutum, a model organism of diatoms, plays a crucial role in Earth’s primary productivity. Investigating its cellular response to grazing pressure is highly significant for the marine ecological environment. Furthermore, the integration of multi-omics approaches has enhanced the understanding of its response mechanism.MethodsTo assess the molecular and cellular responses of P.tricornutum to grazer presence, we conducted transcriptomic, proteomic, and metabolomic analyses, combined with phenotypic data from previous studies. Sequencing data were obtained by Illumina RNA sequencing, TMT Labeled Quantitative Proteomics and Non-targeted Metabolomics, and WGCNA analysis and statistical analysis were performed.ResultsAmong the differentially expressed genes, we observed complex expression patterns of the core genes involved in the phenotypic changes of P.tricornutum under grazing pressure across different strains and multi-omics datasets. These core genes primarily regulate the levels of various proteins and fatty acids, as well as the cellular response to diverse signals.ConclusionOur research reveals the association of multi-omics in four strains responses to grazing effects in P.tricornutum. Grazing pressure significantly impacted cell growth, fatty acid composition, stress response, and the core genes involved in phenotype transformation.

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Widespread Production of Polyunsaturated Aldehydes by Benthic Diatoms of the North Pacific Ocean’s Salish Sea

Johnson,

Olson,

Parker

et al. 2024

J Chem Ecol

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Diatom Ecophysiology: Crossing Signals on the Road to Recovery from Nutrient Deprivation

Cited by 4 publications

References 18 publications

Characteristics of Phytoplankton Community Structure and Indication to Water Quality in the Lake in Agricultural Areas

Characteristics of Phytoplankton Community Structure and Indication to Water Quality in the Lake in Agricultural Areas

Multi-omic insights into the cellular response of Phaeodactylum tricornutum (Bacillariophyta) strains under grazing pressure

Widespread Production of Polyunsaturated Aldehydes by Benthic Diatoms of the North Pacific Ocean’s Salish Sea

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