Proteomics

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Proteome response of the diatom Phaeodactylum tricornutum to short term shifts in nitrogen source and availability.

ABSTRACT: The photosynthetic model marine diatom Phaeodactylum tricornutum was cultured with varying nitrogen sources and availability to elicit shifts in the proteome. Cells were grown to mid-exponential phase on ammonium (880 uM), collected by centrifugation and resuspended in N-free media for 2 hrs, and spiked with nitrate (150 uM) for 90 min. Cells were again collected by centrifugation, washed in N-free media, and resuspended in experimental treatments with no nitrogen (N-) and a nitrogen source (300 uM) provided as ammonium, nitrite, or nitrate. Each experimental treatment was sampled after 15 min, 45 min, and 18 hr.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Phaeodactylum Tricornutum

SUBMITTER: Matthew Monroe  

LAB HEAD: Andrew E. Allen

PROVIDER: PXD015061 | Pride | 2019-09-25

REPOSITORIES: Pride

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Action DRS
Andy0016_10_11Jul13_Pippin_12-12-39.mgf Mgf
Andy0016_10_11Jul13_Pippin_12-12-39.pride.mgf.gz Mgf
Andy0016_10_11Jul13_Pippin_12-12-39.raw Raw
Andy0016_10_11Jul13_Pippin_12-12-39_msgfplus.mzid.gz Mzid
Andy0016_10_11Jul13_Pippin_12-12-39_msgfplus.pride.mztab.gz Mztab
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Publications

Diatoms outcompete other phytoplankton for nitrate, yet little is known about the mechanisms underpinning this ability. Genomes and genome-enabled studies have shown that diatoms possess unique features of nitrogen metabolism however, the implications for nutrient utilization and growth are poorly understood. Using a combination of transcriptomics, proteomics, metabolomics, fluxomics, and flux balance analysis to examine short-term shifts in nitrogen utilization in the model pennate diatom in Ph  ...[more]

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