Diversity and characteristics of plant immunity–activating bacteria from Brassicaceae plants

BMC Microbiology

Table 1 Characteristics of components enhancing cryptogein-induced ROS production

Gram staining	Genus	Strain ^a	Localization ^b		Thermal stability ^c
Gram staining	Genus	Strain ^a	Cellular	Extracellular	Thermal stability ^c
–	Enterobacter	RS2R-3	+	–	–
–	Pseudomonas	BR1R-3	+	–	–
–	Pseudomonas	BR1R-5	+	–	–
–	Pseudomonas	RS1P-1 ^d	+	–	–
–	Pseudomonas	RS3R-1 ^d	+	–	–
–	Xanthomonas	RS2P-4	+	–	–
–	Delftia	BR1R-2 ^d	+	–	+
–	Agrobacterium	BR3S-1	+	+	–
+	Paenarthrobacter	BR3S-9	+	–	–
+	Bacillus	BR2S-4	+	–	+
+	Arthrobacter	BR2S-6 ^d	+	+	–
+	Bacillus	BR2R-4	+	+	–
+	Microbacterium	RS2P-3	+	+	–
+	Rhodococcus	RS1R-6 ^d	+	+	+

^a BR strains were isolated from B. rapa var. perviridis in our previous study [27] and RS strains were isolated from R. sativus var. hortensis in this study
^b Bacterial cell culture solution was centrifuged to separate the cells and extracellular components before measurement of cryptogein-induced ROS production
^c Bacterial cell culture solution was autoclaved before the measurement
^d These strains colonized the interior of the Arabidopsis plants without affecting plant growth and induced whole-plant resistance to P. syringae pv. tomato DC3000 and/or P. carotovorum subsp. carotovorum NBRC 14082

ISSN: 1471-2180