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• W2022277487 abstract "Wild-type Dictyostelium amoebae secrete an autocrine, prestarvation factor (PSF) that allows them to measure the amount of food bacteria compared to their cell density. When the ratio of PSF to bacteria reaches a threshold, the cells are signaled to prepare for eventual starvation. This prestarvation response (PSR) usually starts three to four generations before the end of exponential growth, leading to the accumulation of several aggregation specific genes during growth. We characterize a nystatin-resistant mutant, HK19, that expresses the PSR genes three generations earlier than wild type but has an otherwise wild-type PSR. Although HK19 has a full PSR during growth, HK19 continues to grow at the wild-type rate and reaches normal cell densities. Because HK19 temporally separates the PSR from starvation, it became possible to test whether starvation is required for development. Since HK19 growing at low density can be induced to clump with either cAMP or folate, it appears that the PSR and an external signal are sufficient for entry into development. These data suggest that the PSR is a complex genetic pathway that induces genes involved in the exit from growth and the entry into development." @default.
• W2022277487 created "2016-06-24" @default.
• W2022277487 creator A5072236677 @default.
• W2022277487 creator A5082822281 @default.
• W2022277487 date "2001-02-01" @default.
• W2022277487 modified "2023-09-24" @default.
• W2022277487 title "Altered prestarvation response in a nystatin resistant Dictyostelium discoideum mutant" @default.
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• W2022277487 doi "https://doi.org/10.1046/j.1432-0436.2001.067001001.x" @default.
• W2022277487 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/11270118" @default.
• W2022277487 hasPublicationYear "2001" @default.
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