Osman M, Mohamed Y A, el-Sayed M A, Abo-Zeid A
Department of Botany, Faculty of Science, Tanta University, Egypt.
Microbios. 1988;56(227):79-87.
Near-UV (NUV) irradiation was found to stimulate protein synthesis in Penicillium notatum and Aspergillus flavus. DNA was also induced by short periods of NUV (10 and 20 min) in P. notatum. Synthesis of DNA in A. flavus decreased under the same treatment and then increased when irradiation was for long periods. The reverse of this observation was seen in the case of RNA synthesis, while RNA synthesis was significantly inhibited by NUV in P. notatum. Induction of RNA synthesis was observed in A. flavus. Far-UV (FUV) irradiation induced protein synthesis in P. notatum and A. flavus; the increase was more pronounced in A. flavus. FUV slightly inhibited DNA synthesis in P. notatum, but the synthesis in A. flavus was fairly constant. RNA synthesis was reversed to a certain extent by FUV in both fungi. UV irradiation produced no effect on the process of lipid synthesis. Total soluble carbohydrates were decreased by NUV in P. notatum and increased markedly in A. flavus (240 min NUV). FUV irradiation resulted in an increase in total soluble carbohydrates in both fungi.
研究发现，近紫外光（NUV）照射可刺激青霉和黄曲霉中的蛋白质合成。短时间（10分钟和20分钟）的NUV照射也能诱导青霉中的DNA合成。在相同处理下，黄曲霉中的DNA合成减少，而长时间照射时则增加。在RNA合成方面观察到了相反的情况，青霉中的RNA合成受到NUV的显著抑制，而黄曲霉中则观察到RNA合成的诱导。远紫外光（FUV）照射可诱导青霉和黄曲霉中的蛋白质合成，黄曲霉中的增加更为明显。FUV略微抑制青霉中的DNA合成，但黄曲霉中的合成相当稳定。两种真菌中的RNA合成在一定程度上都被FUV逆转。紫外线照射对脂质合成过程没有影响。NUV使青霉中的总可溶性碳水化合物减少，而黄曲霉中（240分钟的NUV照射）则显著增加。FUV照射导致两种真菌中的总可溶性碳水化合物增加。
