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  • Title: L-alanine and inosine enhancement of glucose triggering in Bacillus megaterium spores.
    Author: Bédard J, Lefebvre GM.
    Journal: Can J Microbiol; 1989 Aug; 35(8):760-3. PubMed ID: 2510916.
    Abstract:
    Both rate and extent of germination of Bacillus megaterium 14581 (ATCC) spores are considerably augmented when L-alanine and inosine are added to the glucose commonly used as triggering agent for this strain. This enhancement does not arise from heterogeneity in germination requirements of the dormant spore, but is rather a consequence of the combined action of glucose and either or both of the added reagents on a sizeable fraction of spores unable to germinate in glucose alone. Nearly half of the spores that eventually germinate in the mixture of germinants used are either triggered by glucose or are sensitized by it to subsequent triggering by L-alanine and inosine in the first 10 s of imbibition. For a good number of these spores, then, triggering consists of a sequence of separable events.
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