Characterization of Bacillus subtilis HC8, a novel plant-beneficial endophytic strain from giant hogweed.
Bottom Line: Metabolites possibly responsible for these plant-beneficial properties were identified as the hormone gibberellin and (lipo)peptide antibiotics respectively.However, thin layer chromatography profiles of the two strains differ.It is speculated that endophytes such as B. subtilis HC8 contribute to the fast growth of giant hogweed.
Affiliation: Leiden University, Institute of Biology, Sylvius Laboratory, Sylviusweg 72, Leiden, The Netherlands.Show MeSH
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Mentions: The three B. subtilis strains, BT18, HC8 and MZ3, were selected as the best antagonists (Table 2). Therefore, their ability to control TFRR was evaluated. Seed bacterization with only HC8 significantly decreased disease symptoms, from 91% to 42% (Fig. 2A). Significant biocontrol activity of HC8 was also found in a second experiment (Fig. 2B). Although the two other antagonistic strains, MZ3 and BT18, did not show significant biocontrol of TFRR (Fig. 2A) plants bacterized with these strains did show reduced disease severity (results not shown).
Affiliation: Leiden University, Institute of Biology, Sylvius Laboratory, Sylviusweg 72, Leiden, The Netherlands.