RRC ID 89159
Author Kotomi Kunishi, Norika Fujisawa, Hidenori Matsui, Nanami Sakata, Yoshiteru Noutoshi, Kazuhiro Toyoda, Yuki Ichinose
Title Tabtoxin biosynthetic gene cluster in Pseudomonas syringae pv. tabaci 6605 genomic island 1 (GI-1Pta6605) is required for severe disease symptoms
Journal Journal of General Plant Pathology
Abstract One of the genomic islands in Pseudomonas syringae pv. tabaci 6605 (GI-1 Pta 6605 ) has been identified as a pathogenicity island required for virulence because the deletion almost completely eliminated disease symptoms in inoculation tests at 4 × 10 5  CFU/ml. GI-1 Pta 6605 contains four cargo regions (CRs) named CR-1 to CR-4. The ∆CR-4 mutant did not produce tabtoxin like ∆GI-1 and disease symptoms did not develop in tobacco. However, it grew, although to a lesser extent than the wild-type strain. These results indicate that the tabtoxin biosynthetic gene cluster in GI-1 is required for virulence but not for establishment of compatibility.
Volume 92
Pages 166-170
Published 2026-5-1
DOI 10.1007/s10327-026-01275-2
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Prokaryotes E. coli