ABSTRACT
Plant pathogenic bacteria can rapidly cause serious, devastating diseases, especially if the weather is humid and warm. Plant pathogenic bacteria move in a water film, enter the plant through natural openings and wounds and are spread in the plants through the vascular bundles. Bacteria are extremely minute, rigid, essentially unicellular organisms, devoid of chlorophyll, most commonly reproduce by transverse binary fission and the resulting cells are identical in size and morphology. Flagella is a hair like helical structures that protrude through cell wall and are used for locomotion. Peptidoglycan contains polysaccharide chains that are cross-linked with peptides containing D-amino acids. Conjugation occurs when two compatible bacteria come into contact and part of the chromosomal or non-chromosomal genetic material of one is transferred to the other and incorporated into the genome of later through conjugal zygote formation and breakage and reunion.
