3. Resulta and discussion (12 pt)
The bacterial isolates were characterized by their morphological, biochemical characteristics and 16S rRNA sequence. The 16S rRNA gene sequence of bacterial isolates were determined by PCR amplification and the sequencing of the PCR product. The phylogeny of 18 bacterial strains was obtained. These endophytic bacteria were distributed along 10 generaand comprised of three bacterial classes, Bacteroidetes, Firmicutes,and Proteobacteria as shown in Table 1. The previous studies have been revealed that the genera of Bacillus, Burkholderia, Enterobacter, Microbacterium, Pantoea, and Pseudomonas were identified as sugarcane endophytes.