ACTION OF BACTERIA AGAINST FUNGI 



151 



ANTAGONISTIC EFFECTS OF BACTERIA AND 

 ACTINOMYCETES AGAINST FUNGI 



Various bacteria and actinomycetes have marked selective fungistatic 

 and fungicidal effects (Table 30). Bacteria active against U. zeae were 

 isolated from corn, these bacteria being capable of destroying the colo- 

 nies of the smut fungi. The widespread distribution of such bacteria 

 in the soil was believed to check the multiplication of the pathogenic 

 fungi. Four types of bacteria antagonistic to smuts and to certain other 

 fungi have been described (470). Some of these bacteria produce en- 

 zymes that are able to dissolve the chemical constituents of the cell 

 walls of the fungus sporidia; they were also found to be active in the 

 soil against the specific fungi. Brown (93) observed that H. sativum 

 and a certain bacterium produced thermostable, mutually mhibitmg 

 substances. The bacterium as well as its metabolic products inhibited the 



TABLE 30. ANTAGONISTIC EFFECTS OF BACTERIA AGAINST FUNGI 



ANTAGONIST 



Achromobacter %^. 

 Al. faecalis 

 Bacillus "/)" 

 B. anthracis 

 B. mesentericus 

 B. mycoides 

 B. simflex 

 B. subtilis 



Bacterium sp. 



Bacterium sp. 



Myxobacterium 



P. vulgaris 



Ps. aeruginosa 



Ps. juglandis 



Ps. fhaseoli 



Ps. translucens 



Ps. vulgaris 



S. marcescens 



Spore-forming bacteri 



From Novogrudsky (683). 



