the bacterium pantoea stewartii uses two different type iii secretion systems to colonize its plant host and insect vector.plant- and animal-pathogenic bacteria utilize phylogenetically distinct type iii secretion systems (t3ss) that produce needle-like injectisomes or pili for the delivery of effector proteins into host cells. pantoea stewartii subsp. stewartii (herein referred to as p. stewartii), the causative agent of stewart's bacterial wilt and leaf blight of maize, carries phylogenetically distinct t3sss. in addition to an hrc-hrp t3ss, known to be essential for maize pathogenesis, p. stewartii has a second t ...201222773631
temporal dynamics of corn flea beetle populations infested with pantoea stewartii, causal agent of stewart's disease of corn.abstract in order to better understand the epidemiology of the stewart's disease of corn pathosystem, quantitative information concerning the temporal dynamics of the amount of pathogen inoculum present in the form of pantoea stewartii-infested corn flea beetles (chaetocnema pulicaria) is needed. temporal changes in the proportion of p. stewartii-infested corn flea beetle populations were monitored by testing individual corn flea beetles for the presence of p. stewartii using a peroxidase-labele ...200318943136
trap height and orientation of yellow sticky traps affect capture of chaetocnema pulicaria (coleoptera: chrysomelidae).field studies were conducted in iowa during 2001 and 2002 to determine the optimal sampling height and orientation for using yellow sticky cards to monitor populations of chaetocnema pulicaria melsheimer, the vector of the bacterial pathogen pantoea stewartii subsp, stewartii, the causal organism of stewart's disease of corn, zea mays l.. sticky cards were placed at five different heights (0.15, 0.30, 0.45, 0.60, and 0.90 m) and three orientations (horizontal, vertical, and 30 degree angle) at t ...200414998138
temporal distribution of chaetocnema pulicaria (coleoptera: chrysomelidae) populations in 1999 and 2000, yellow sticky cards and sweep net samples were used to document the occurrence of an overwintering adult generation of chaetocnema pulicaria melsheimer, corn flea beetle, followed by two distinct populations peaks during the growing season in iowa emergence of the overwintering adult generation started in mid-april and continued until early june in both years, with populations as high as 45 +/- 7.9 per 10 sweeps. periods that ranged from 14 to 32 d were observed in 1999 and 200 ...200212216815
Displaying items 1 - 4 of 4