Increased activities of peroxidase and indole 3-acetic acid (IAA) oxidase were detected on root surfaces of bean (Phaseolus vulgaris) seedlings colonized with a soil saprophytic bacterium, Pseudomonas putida. IAA oxidase activity increased over 250-fold and peroxidase 8-fold. Enhancement was greater for 6-day-old than for 4- or 8-day-old inoculated plants No IAA oxidase or peroxidase activities...

Two-node cuttings of cassava cultivar SS4 were inoculated with 1,000 infective juveniles of Meloidogyne incognita at 1, 14, 40, 70, 88, and 127 days after planting (DAP). Plant growth and root damage were assessed at 150 DAP. Meloidogyne incognita significantly reduced the number of storageroots formed in plants inoculated at 14, 40, 70, and 88 DAP and the total weight of storage-roots in plant...

an ability of the fluorescent pseudomonad bacteria is to secrete such secondary metabolites as hydrogen cyanide, protease, salicylic acid as well as siderophore which prevent the growth of soil-habitant pathogens. tests were done for evaluating the materials produced by the said bacteria. in the tests' cultures, p. aeruginosa strains 7nsk2, utpf92, and utpf86 produced the most hydrogen cya...

abstract ascochyta blight caused by didymella rabiei is one of the most important diseases of chickpea in ilam and kermanshah provinces, iran. in order to determine the pathogenicity variation of didymella rabiei populations, infected plants in field crops of different regions of both provinces were sampled. one hundred isolates were isolated by chickpea seed meal dextrose agar media. these iso...

Effects of water stress on ethylene evolution from excised leaf segments and intact plants of wheat (Triticum aestivum L. cv Katepwa) were studied. Excised leaf segments of 8 day or 6 week old plants were dried until they lost 8% of their fresh weight (water potential about -2.3 megapascals). These and nondried control leaf segments (water potential about -1.0 megapascal) were sealed in glass t...

in this study, immunohistochemistry was used to clarify the early stages of viral kinetics and cycliccourse of ibdv, ir499, which has been described earlier as a very virulent strain (vvibdv). fifteen, 4-week-old spf chickens were inoculated with 10³ eid50 of vvibdv, ir499, via oculo/nasal route. five birdsserved as controls, and inoculated with phosphate buffered saline (pbs). the birds were t...