Lactobacillus delbrueckii subsp. bulgaricus Lactobacillus delbrueckii subsp. bulgaricus Lactobacillus delbrueckii" subsp. "bulgaricus (until 2014 known as Lactobacillus bulgaricus) is the main bacteria used for the production of yogurt. It is also found in other naturally fermented products. First identified in 1905 by the Bulgarian doctor Stamen Grigorov, the bacterium feeds on lactose to produce lactic acid, which is used to preserve milk. "Lactobacillus delbrueckii" subsp. "bulgaricus" can be found naturally in the gastrointestinal tract of mammals living in Bulgaria, but one specific strain, "Lactobacillus bulgaricus" GLB44, is extracted from the leaves of the "Galanthus nivalis" (snowdrop flower) in Bulgaria as well. The bacterium is
Chlamydomonas nivalis food source. Infections of "C. nivalis" cells by chytrids, "Chytridium chlamydococci", filamentous fungi, and "Selenotila nivalis" have also been observed. As winter approaches, the cells will approach the last stage of their life cycle. The orange cells mature into red cysts, the form in which it will remain for the remainder and longest portion of its life cycle. Cells at this stage are most resistant to harsh environmental conditions. Inorganic and organic materials such as bacteria, fungi, and dust particles coat the mucilage layer of the cell wall. The inorganic impurities were found to be rich in silicon, iron, and