Pavlichenko A K, Zhdanova N N
Mikrobiol Z. 2006 Mar-Apr;68(2):58-64.
The work deals with the effect of limitation of organic carbon (glucose) on the growth and morphology of two species of microscopic fungi Hormoconis resinae and Cladosporium sphaerospermum (11 strains), isolated from premises of the 4th unit of the Chernobyl NPP and isolation places which arc pure from radionuclides. The dissimilar reaction of each of the species to decreasing the amount of organic carbon in the culture medium has been established. Ontogenesis reduction was observed for both species under the conditions of limitations of organic carbon. In was manifested for H. resinae in reduction of the typical conidial sporulation and in transition to micelial way of existence, and only conidial sporulation and formation of "empty" micelium Were registered under such conditions for C. sphaerospermum. The studied strains were related to 3 ecologic groups by oligocarbotolerance criterion: typical saprotrophs, intermediate group, strains with a tendency to oligocarbotolerance.
该研究探讨了有机碳(葡萄糖)限制对从切尔诺贝利核电站4号机组场地及无放射性核素的隔离地点分离出的两种微观真菌——树脂附球菌(Hormoconis resinae)和球形枝孢菌(Cladosporium sphaerospermum,11个菌株)的生长和形态的影响。已确定每种真菌对培养基中有机碳含量降低的不同反应。在有机碳限制条件下,两种真菌均观察到个体发育减少。对于树脂附球菌,表现为典型分生孢子形成减少并转变为菌丝体生存方式;而在这种条件下,球形枝孢菌仅记录到分生孢子形成和“空”菌丝体的形成。根据低有机碳耐受性标准,所研究的菌株可分为3个生态组:典型腐生菌、中间组、有低有机碳耐受性倾向的菌株。