Plant Growth Promoting of EndophyticSporosarcina aquimarinaSjAM16103 Isolated fromthe Pneumatophores ofAvicennia marina L.

[摘要] EndophyticSporosarcina aquimarinaSjAM16103 was isolated from the inner tissues of pneumatophores of mangrove plantAvicennia marinaalong withBacillussp. andEnterobactersp. EndophyticS. aquimarinaSjAM16103 was Gram variable, and motile bacterium measured 0.6–0.9 μm wide by 1.7–2.0 μm long and light orange-brown coloured in 3-day cultures on tryptone broth at 26°C. Nucleotide sequence of this strain has been deposited in the GenBank under accession number GU930359. This endophytic bacterium produced 2.37 μMol/mL of indole acetic acid and siderophore as it metabolites. This strain could solubilize phosphate molecules and fixes atmospheric nitrogen. EndophyticS. aquimarinaSjAM16103 was inoculated into four different plants underin vitromethod to analyse its growth-promoting activity and role inside the host plants. The growth of endophyticS. aquimarinaSjAM16103 inoculated explants were highly significant than the uninoculated control explants. Root hairs and early root development were observed in the endophyticS. aquimarinaSjAM16103 inoculated explants.

[学科分类] 微生物学和免疫学