caa a22 4500 469041951 CHVBK 20180323132813.0 cr unu---uuuuu 170328e19920101xx s 000 0 eng 10.1007/BF01998077 doi (NATIONALLICENCE)springer-10.1007/BF01998077 First report of Rhizomonas sp. causing corky root of lettuce in Europe [Elektronische Daten] [A. Van Bruggen, K. Jochimsen] Typical symptoms of corky root were observed on iceberg lettuce (Lactuca sativa L.) in the Netherlands and England, on prickly lettuce (Lactuca serriola L.) in Spain, and on sowthistle (Sonchus oleraceus L.) in Greece. Slow-growing bacteria with similar colonies as strains ofRhizomonas suberifaciens or otherRhizomonas species were isolated from soil surrounding plants with corky root symptoms using lettuce seedlings as bait. Crude lysate from all strains was tested for DNA homology with DNA fromR. suberifaciens strain CA1 (R. sub. CA1) andRhizomonas sp. strain WI4 (R. sp. WI4). Strains that had homology values higher than that ofR. sp. WI4 orR. sub. CA1 were tested for pathogenicity on 1-wk-old lettuce seedlings, cv. Salinas, Two strains from the Netherlands induced typical symptoms of corky root on lettuce. These strains tested negative with monoclonal antibody MAb-Rs1 specific forRhizomonas suberifaciens in an enzyme-linked immunosorbent assay (ELISA). They had low DNA homology withR. sub. CA1 (4-9%) and low to moderate DNA homology withR. sp. WI4 (4-17%). Some nonpathogenic strains had moderate to high levels of DNA homology withR. sub. CA1 orR. sp. WI4 (19-84%). All strains had fatty acid profiles similar to those ofRhizomonas species. This is the first report ofRhizomonas sp. causing corky root of lettuce in Europe. Koninklijke Nederlandse Planteziektenkundige Vereniging, 1992 Lactuca sativa nationallicence Rhizomonas suberifaciens nationallicence pathogenicity nationallicence DNA homology nationallicence fatty acid profile nationallicence ELISA nationallicence Van Bruggen A. Department of Plant Pathology, University of California, 95616, Davis, CA, USA aut Jochimsen K. Department of Plant Pathology, University of California, 95616, Davis, CA, USA aut Netherlands Journal of Plant Pathology Kluwer Academic Publishers 98/1(1992-01-01), 45-56 0028-2944 98:1<45 1992 98 10658 https://doi.org/10.1007/BF01998077 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01998077 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Van Bruggen A. Department of Plant Pathology, University of California, 95616, Davis, CA, USA aut NATIONALLICENCE 700 1- Jochimsen K. Department of Plant Pathology, University of California, 95616, Davis, CA, USA aut NATIONALLICENCE 773 0- Netherlands Journal of Plant Pathology Kluwer Academic Publishers 98/1(1992-01-01), 45-56 0028-2944 98:1<45 1992 98 10658 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 469041951 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer