Braña A F, Méndez C, Díaz L A, Manzanal M B, Hardisson C
J Gen Microbiol. 1986 May;132(5):1319-26. doi: 10.1099/00221287-132-5-1319.
Streptomyces antibioticus accumulated glycogen and trehalose in a characteristic way during growth on solid medium. Glycogen storage in the substrate mycelium took place during development of the aerial mycelium. The concentration of nitrogen source in the culture medium influenced the time at which accumulation started as well as the maximum levels of polysaccharide stored. Degradation of these glycogen reserves was observed near the beginning of sporulation. The onset of sporogenesis was always accompanied by a new accumulation of glycogen in sporulating hyphae. During spore maturation the accumulated polysaccharide was degraded. No glycogen was observed in aerial non-sporulating hyphae or in mature spores. Trehalose was detected during all phases of colony development. A preferential accumulation was found in aerial hyphae and spores, where it reached levels up to 12% of the cell dry weight. The possible roles of both carbohydrates in the developmental cycle of Streptomyces are discussed.
抗生素链霉菌在固体培养基上生长期间以一种独特的方式积累糖原和海藻糖。在气生菌丝发育过程中，基内菌丝中开始储存糖原。培养基中氮源的浓度影响糖原积累开始的时间以及储存多糖的最大水平。在孢子形成开始时可观察到这些糖原储备的降解。孢子形成的开始总是伴随着在产孢菌丝中糖原的重新积累。在孢子成熟过程中，积累的多糖被降解。在非产孢气生菌丝或成熟孢子中未观察到糖原。在菌落发育的所有阶段均检测到海藻糖。在气生菌丝和孢子中发现有优先积累现象，其含量可达细胞干重的12%。文中讨论了这两种碳水化合物在链霉菌发育周期中的可能作用。
