During stationary phase

Sub-cellular fractionation of five strains reveal the same numbers of bands. The distribution of PG activity in sub-cellular organelles was broadly similar in these five strains. PG activity was detected in low-density vesicles, vacuoles and ER fractions in samples harvested during the early exponential phase of growth. However, PG levels were always lower (at least 1.5 fold) than those found in wild type. Cells of the mutants harvested during stationary phase of growth showed that 84% of total intracellular PG activity was located in the vesicle fraction. No intracellular PG activity was found in stationary phase wild type cells. 

Bajorek, M., Einley, D., and Glickman, M. H. Proteasome disassembly and downregulation is correlated with viability during stationary phase. Curr Biol 2003, 13, 1140-4. 

Stolte, W., Karlsson, C., Carlsson, P., and Graneli, E. (2002). Modeling the increase of nodularin content in Baltic Sea Nodularia spumigena during stationary phase in phosphorus-limited batch cultures. FEMS Microbiol. Ecol. 41, 211-220. 

It has been hypothesized that bacteria associated with toxic dinoflagellates act synergistically to synthesize toxins. Tosteson et al. (1986, 1989) examined the associated bacterial flora, growth and toxicity of cultured Ostreopsis lenticularis, and Ga. toxicus. Ga. toxicus clones were characterized by the presence of Pseudomonas spp. but extracts of dinoflagellate associated bacteria in pure culture were not toxic. Peak toxicity of O. lenticularis occurred during stationary phase and correlated with increases in bacterial biomass. 

If stationary-phase physiology of cultured-cell populations is equated with the slowed growth of mature organismal tissues, then the results obtained with the chorismate mutase isozyme pair (Fig. 3) seem to be consistent with the results shown in Figure 5 for the isozymes of DAHP synthase. Thus, cytosolic CM-2 is elevated in organismal tissue and cytosolic DAHP synthase-Co (DS-Co) is elevated during stationary-phase physiology of tissue culture. 

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