Bacterial Community Stratification Related to Ice Ice Disease on Seaweed (Kappaphycus alvarezii)

Abstract

Ice ice disease can attacks the seaweed group of karaginofit especially Kappaphycusalvarezii which affects discoloration on tallus, decreases carragenan quality, and makes the production of seaweed is low. Thus, ice ice disease must be controled by prevention method to increase the yield quality through detection and identification of  this disease. The aims of this research to explore the ice ice caused-bacteria diversity in K. alvarezii based on the depth-stratification in order to determine the best depth of seaweed cultivation to avoid ice ice infection. Isolationof the bacteriafromK.alvarezii cultivationarea carriedwithterraceddilutionand spread method. The datawill be analyzed descriptively. The result of this research was known that the bacteria caused ice-ice disease was found in depth 20 meter. This bacteria had caragenase activity and selulase enzyme to attack K. alvarezzi thallus.