Studies on the cellulolytic enzymes of phytopathogenic bacteria

Studies on the Nitrogen Requirements of Some Ruminal Cellulolytic Bacteria.

Knowledge of the nitrogen compounds utilized for growth of ruminal cellulolytic bacteria is of considerable importance to an understanding of the nitrogen economy of ruminants and of factors affecting ruminal cellulose digestion. Work with mixed cultures of bacteria from the rumen has shown that cellulose digestion occurs with ammonia or urea, which rapidly yields ammonia, as the sole source of...

Production of Cellulolytic Enzymes

For the conversion of plant biomass into various bioproducts, a significant bottleneck is enzymatic hydrolysis of lignocelluloses to soluble sugars. These sugars are then metabolized through various natural or engineered pathways toward products of interest. The success of projected biorefinery processes depend to a large extent on the economics of hydrolytic enzyme production. Presently, mesop...

The Metabolism of Phytopathogenic Bacteria

In view of the economic importance of plant pathogenic bacteria it is understandable that most of the work on these organisms should have been devoted to problems of pathogenicity, host range, and symptoms, specificity, distribution, and control (Burkholder, 1948; Hildebrandt, 1950). The taxonomy of these bacteria has been the subject of numerous investigations (Burkholder, 1948) and significan...

Isolation of Cellulolytic Bacteria

Competition among three predominant ruminal cellulolytic bacteria in the absence or presence of non-cellulolytic bacteria.

Competition among three species of ruminal cellulolytic bacteria - Fibrobacter succinogenes S85, Ruminococcus flavefaciens FD-1 and Ruminococcus albus 7 - was studied in the presence or absence of the non-cellulolytic ruminal bacteria Selenomonas ruminantium or Streptococcus bovis. Co-cultures were grown under either batch or continuous conditions and populations were estimated using species-sp...