Characterization of endophytic bacteria of Mindi (Melia azedarach) and Balsa (Ochroma pyramidale) plants and potential inhibition in plant diseases

Abstract

Plant diseases attack all parts of the plant, such as leaves, stems, and roots. The cause of pest attacks is due to several factors, namely environmental conditions that support pathogens, selected plant conditions that are susceptible to disease, and poor maintenance. Disease attacks on the roots include attacks that are harmful to plants, so it is necessary to have effective control carried out by considering the ecology and economy. One of the techniques for controlling plant-disturbing organisms (OPT) can be carried out by utilizing endophytic microbes. This study aimed to explore the types of endophytic bacteria found in balsa and mindi, which have the potential as biological control agents, as well as the effect of using endophytic bacteria in suppressing the growth of root diseases in vitro. The study found that as many as 20 endophytic bacteria were purified from balsa, and 25 individuals were purified from mindi. The hemolysis test and plant hypersensitivity test results showed seven pure isolates with endophytic potential, namely three isolates from balsa and four from mindi.