WHICH BACTERIA CAN BREAK DOWN THE CELL WALL OF THE PLANT(CELLULOSE)? 

Degradation of cellulosic plant material is carried out by communities of anaerobic microorganisms (bacteria) that exist in symbiotic association with the host. One of the classic examples of cellulose-digesting bacteria are the Ruminococcus species. This cellulolytic gram-positive bacterium Ruminococcus flavefaciens produces an elaborate cellulosomal enzyme complex that is anchored to the bacterial cell wall and helps in digesting the cellulosic material of a plant cell.