Vegetative growth, aging- and light-induced conidiation of Trichoderma viride cultivated on different carbon sources

被引:16
作者
Chovanec, P [1 ]
Hudecová, D [1 ]
Varecka, L [1 ]
机构
[1] Slovak Univ Technol Bratislava, Dept Biochem & Microbiol, Bratislava 81237, Slovakia
关键词
D O I
10.1007/BF02814432
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The growth and conidiation of the aged Trichoderma viride culture grown in the dark, and after all induction by a light pulse, was examined in the presence of selected mono-, di(tri)saccharides, amino acids and alcohols as sole carbon sources. Hexoses and disaccharides, but not pentoses and amino acids, promoted proportionally both growth and conidiation induced by aging or light. All compounds but pentoses promoted the conidiation in aged cultures and photoconidiation in a close correlation. Ethanol, glycerol and ethylene glycol supported both growth and conidiation but these processes were not Supported equally. Conidia formation with hexoses and amino acids as sole carbon sources seems to be a function of growth promotion, rattler than of growth restriction (starvation, stress, aging). With glucose as sole carbon source the conidiation was not triggered by nutrient limitation, nor by the accumulation of waste metabolites. The aging-induced conidiation can be considered to be triggered by the genetic program of the microorganism rather than by its nutrient status.
引用
收藏
页码:417 / 422
页数:6
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