Identification and characterization of fluorescent pseudomonads used to inoculate fern rhizomes to determine development of symptoms of FDS.

1HRZ = Inside rhizomes of healthy-appearing ferns from a fernery in Florida without history of Benlate use; SRS = Rhizosphere (roots and rhizomes) of symptomatic ferns in Costa Rica; SRZ = inside rhizomes of symptomatic ferns in Costa Rica. Bold indicates isolates that have unique 16S rRNA gene sequences.
2Identified using phylogenetic analysis of 16S rRNA gene sequencing. Numbers in parentheses indicate the “seqmatch score”. These are the number of unique 7-base oligomers shared between each strain sequence and the indicated RDP sequence divided by the lowest number of unique oligos in either of the two sequences.
3The phylogenetic clusters are shown in Figure 1.
4Tobacco hypersensitive test; ++ indicates dry necrosis in 24–36 hr after inoculation; + indicates wet necrosis in 48 hr.
5Measurement of pectinolytic activity, where ++ indicates soft rot of potato slice 24 hr after inoculation; + indicates soft rot 48 hr after inoculation.
6Production of IAA was quantified as described in the methods.