Tereshina V M, Memorskaia A S, Kochkina G A, Feofilova E P
Institute of Microbiology, Russian Academy of Sciences, pr. 60-letiya Oktyabrya 7, k. 2, Moscow, 117312 Russia.
Mikrobiologiia. 2002 Nov-Dec;71(6):794-800.
We revealed differences in the lipid and carbohydrate composition between cells of mucorous fungi during endogenous and exogenous dormancy. Endogenous dormancy (zygospores) is characterized by high contents of phosphatidylcholine (about 70% of total phospholipids) and triacylglycerol (over 90% of total neutral lipids). By contrast, exogenous dormancy (sporangiospores) is accompanied by elevated amounts of sterols, sterol esters, and free fatty acids, which account for over 70% of total neutral lipids. We established for the first time significant differences in the phospholipid composition between sporangiospores obtained from stylosporangia and sporangioles. Based on the data obtained, we regard the retardation of life-sustaining activities as a biochemical adaptation based on the dormancy state. We also discuss the taxonomical position of B. trispora.
我们揭示了黏液真菌细胞在内源和外源休眠期间脂质和碳水化合物组成的差异。内源休眠（接合孢子）的特征是磷脂酰胆碱含量高（约占总磷脂的70%）和三酰甘油含量高（占总中性脂质的90%以上）。相比之下，外源休眠（分生孢子）伴随着甾醇、甾醇酯和游离脂肪酸含量的升高，它们占总中性脂质的70%以上。我们首次确定了从柱状孢子囊和小孢子囊获得的分生孢子之间磷脂组成的显著差异。基于所获得的数据，我们将维持生命活动的延迟视为基于休眠状态的生化适应。我们还讨论了三孢布拉氏霉菌的分类地位。
