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1.  The quantitative proteomic response of Synechocystis sp. PCC6803 to phosphate acclimation 
Aquatic Biosystems  2013;9:5.
PMCID: PMC3600050  PMID: 23442353
Cyanobacteria; iTRAQ; Phosphate acclimation; Phycobilisome; Pentose phosphate pathway; Ribose sugars; Synechocystis
2.  Comparative quantitative proteomics of prochlorococcus ecotypes to a decrease in environmental phosphate concentrations 
Aquatic Biosystems  2012;8:7.
The well-lit surface waters of oligotrophic gyres significantly contribute to global primary production. Marine cyanobacteria of the genus Prochlorococcus are a major fraction of photosynthetic organisms within these areas. Labile phosphate is considered a limiting nutrient in some oligotrophic regions such as the Caribbean Sea, and as such it is crucial to understand the physiological response of primary producers such as Prochlorococcus to fluctuations in the availability of this critical nutrient.
Prochlorococcus strains representing both high light (HL) (MIT9312) and low light (LL) (NATL2A and SS120) ecotypes were grown identically in phosphate depleted media (10 μM Pi). The three strains displayed marked differences in cellular protein expression, as determined by high throughput large scale quantitative proteomic analysis. The only strain to demonstrate a significantly different growth rate under reduced phosphate conditions was MIT9312. Additionally, there was a significant increase in phosphate-related proteins such as PhoE (> 15 fold increase) and a depression of the Rubisco protein RbcL abundance in this strain, whereas there appeared to be no significant change within the LL strain SS120.
This differential response between ecotypes highlights the relative importance of phosphate availability to each strain and from these results we draw the conclusion that the expression of phosphate acquisition mechanisms are activated at strain specific phosphate concentrations.
PMCID: PMC3349580  PMID: 22480396
Prochlorococcus; PstS; PhoA; PhoE; Growth; Phosphate

Results 1-2 (2)