Impact of induced systemic resistance on the bacterial rhizosphere microflora
Induced systemic resistance (ISR) has been described for several strains of fluorescent pseudomonads in a variety of crop plants and is effective against a wide range of pathogens. Using the model plant Arabidopsis thaliana, progress has been made in understanding signal transduction pathways involved in induced resistance. Perception of ethylene and jasmonic acid is important for ISR. The traits of Pseudomonas spp. that can trigger ISR appear to be diverse, and include iron regulated metabolites, antibiotics, and lipopolysaccharides. Since pathogen growth is restricted on plants that are in the state of ISR, we hypothesized that the indigenous microflora could also be affected by ISR. Using cultivation dependent and independent techniques, effects of plant defense signaling on the total bacterial and the Pseudomonas spp. microflora of Arabidopsis were studied and related to susceptibility of Arabidopsis genotypes to bacterial speck caused by Pseudomonas syringae pv. tomato.
fluorescent Pseudomonas spp induced systemic resistance phyllosphere root colonization
Peter A.H.M. Bakker Rogier F. Doornbos L. C. Van Loon
Plant-Microbe Interactions, Institute of Environmental Biology, Utrecht University, Padualaan 8,3584 CH Utrecht, The Netherlands
国际会议
The 2nd Asian PGPR Conference(第二届亚洲植物促生根际细菌会议)
北京
英文
6-10
2011-08-21（万方平台首次上网日期，不代表论文的发表时间）