We observed the biphasic production of ethylene and reactive oxygen species (ROS) in susceptible tobacco (Nicotiana tabacum 'Wisconsin 38') plants after shoot inoculation with Phytophthora parasitica var nicotianae. The initial transient increase in ROS and ethylene at 1 and 3 h (phase I), respectively, was followed by a second massive increase at 48 and 72 h (phase II), respectively, after pat...

we assessed a collection of 47 fluorescent pseudomonas spp., some with known biological     control activity against certain soil-borne phytopathogenic fungi such as, macrophomina phaseolina, rhizoctonia solani, phytophthora nicotianae var. parasitica, pythium sp. and  fusarium sp. in vitro and the potential to produce known secondary metabolites such as, siderophore, hcn and protease. the resu...

positive, catalase-positive and pleomorphic rods, and belong to the order Actinimycetales (Stackebrandt et al., 1997). According to a list of bacterial names with standing in nomenclature (URL: http://www.bacterio. cict.fr/) (Euzéby, 1997), the number of species accounted for in this genus is 30, eliminating the species reidentified as other taxa than the genus Arthrobacter. The species of the ...