title: Extracellular superoxide anion production contributes to the virulence of Xanthomonas oryzae pv. oryzae.
abstract: Endogenous superoxide anion production was determined by electron spin resonance in wild-type strains and avrXa7 mutants of Xanthomonas oryzae pv. oryzae. The localization of superoxide anion was carried out in the intra- and extra-cellular fractions. Results showed the presence of superoxide anion in multi-locations of X. oryzae pv. oryzae cells. The extracellular fraction was the major location of superoxide anion production. Furthermore, a positive relationship was shown between the levels of endogenous superoxide anion and the virulence of strains. These indubitable results suggested that the superoxide anion contributes to the virulence of X. oryzae pv. oryzae.
authors.affiliation: School of Life sciences, Lanzhou University, Lanzhou-730000, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Li
authors.forename: Xinyue
authors.initials: X
authors.lastname: Pang
authors.forename: Dejuan
authors.initials: D
authors.lastname: Zhi
authors.forename: Jinsheng
authors.initials: J
authors.lastname: Wang
authors.forename: Minquan
authors.initials: M
authors.lastname: Li
authors.forename: Hongyu
authors.initials: H
authors.lastname: Li
mesh_terms: D001692:Biological Transport; D005110:Extracellular Space / Q000737:chemistry / Q000378:metabolism*; D012275:Oryza / Q000382:microbiology*; D010935:Plant Diseases / Q000382:microbiology*; D013481:Superoxides / Q000378:metabolism*; D014774:Virulence; D014974:Xanthomonas / Q000737:chemistry / Q000235:genetics / Q000378:metabolism* / Q000472:pathogenicity*
chemical_list: D013481:Superoxides