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Novel proteins and an ancient light-harvesting complex family member are key to algal growth under ocean phosphate limitation

ABSTRACT: Micromonas implements a sustained non-photochemical quenching response to phosphate limitation, driven by light harvesting family protein LHCSR. This protein, allows stable growth under P-limitation and increased growth without major LCH adjustment as phosphate becomes more available. Proteomics results show this alga integrates unique strategies to optimize growth under dynamic ocean nutrient conditions.

INSTRUMENT(S): LTQ Orbitrap Velos

ORGANISM(S): Micromonas Sp. (strain Rcc299 / Noum17) (picoplanktonic Green Alga)

SUBMITTER: Matthew Monroe

LAB HEAD: Alexandra Z. Worden

PROVIDER: PXD006320 | Pride | 2018-10-22

REPOSITORIES: Pride

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Specialized proteomic responses and an ancient photoprotection mechanism sustain marine green algal growth during phosphate limitation.

Guo Jian J Wilken Susanne S Jimenez Valeria V Choi Chang Jae CJ Ansong Charles C Dannebaum Richard R Sudek Lisa L Milner David S DS Bachy Charles C Reistetter Emily Nahas EN Elrod Virginia A VA Klimov Denis D Purvine Samuel O SO Wei Chia-Lin CL Kunde-Ramamoorthy Govindarajan G Richards Thomas A TA Goodenough Ursula U Smith Richard D RD Callister Stephen J SJ Worden Alexandra Z AZ

Nature microbiology 20180625 7

Marine algae perform approximately half of global carbon fixation, but their growth is often limited by the availability of phosphate or other nutrients1,2. As oceans warm, the area of phosphate-limited surface waters is predicted to increase, resulting in ocean desertification3,4. Understanding the responses of key eukaryotic phytoplankton to nutrient limitation is therefore critical5,6. We used advanced photo-bioreactors to investigate how the widespread marine ...[more]

PMID: 29946165

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