Plant pathogenic bacteria
Antibiotic resistance in plantpathogenic bacteria has become a problem in pathosystems where these antibiotics have been used for many years. Where the genetic basis for resistance has been examined, antibiotic resistance in plant pathogens has most often evolved through the acquisition of a resistance determinant via horizontal gene transfer.Most plant pathogenic bacteria are rodshaped (bacilli). In order to be able to colonize the plant they have specific pathogenicity factors. Five main types of bacterial pathogenicity factors are known: uses of cell walldegrading enzymes, toxins, effector proteins, phytohormones and exopolysaccharides. plant pathogenic bacteria
The enterobacterial plant pathogens are an important group of bacteria responsible for disease on a wide range of plant species in geographically diverse regions. The enterobacterial plant pathogens entered the postgenomics age in 2004, with the completion of the Pectobacterium atrosepticum SCRI1043 genome sequence.
How can the answer be improved? Most of the plant pathogenic bacteria are either Grampositive, classified within the Phylum Actinobacteria, or Gramnegative, in the Phylum Proteobacteria. Grampositive and Gramnegative cells appear purple or red, respectively, with specific stains when viewed at 1000x magnification with a light microscope ( Figure 12 ).plant pathogenic bacteria Plant pathogenic bacterial vir ulence factors are associated w ith the bacterial sur face or secreted into the surrou nding environment. Proteins sec reted by bacteria are tr ansported via molecula r