Citation

Jones PW, Lettice EP. Nematology 2015; 17(2): 203-212.

Copyright

(Copyright © 2015)

DOI

10.1163/15685411-00002863

PMID

unavailable

Abstract

Three bacterial isolates, SB13 (Acinetobacter sp.), SB14 (Arthrobacter sp.) and SB15 (Bacillus sp.), were previously isolated from the rhizosphere of sugar beet (Beta vulgaris ssp. vulgaris) plants and shown to increase hatch of potato cyst nematodes in vitro. In this study, the three isolates were assayed for rhizosphere competence. Each isolate was applied to seeds at each of four concentrations (105-108 CFU ml-1) and the inoculated seeds were planted in plastic microcosms containing coarse sand. All three isolates were shown to colonise the rhizosphere, although to differing degrees, with the higher inoculation densities providing significantly better colonisation. The isolates increased sugar beet root and shoot dry weight. Isolates SB14 and SB15 were analysed for their ability to induce in vivo hatch of Globodera pallida in non-sterile soil planted with sugar beet. After 4 and 6 weeks, both isolates had induced significantly greater percentage hatch compared to controls. © Koninklijke Brill NV, 2015.

Language: en

Keywords

Bacteria (microorganisms); potato; biotechnology; cyst; nematode; Acinetobacter sp.; Arthrobacter sp.; Bacillus sp.; Beta vulgaris; Beta vulgaris subsp. vulgaris; biocontrol agent; colonization; Globodera pallida; inoculation; Nematoda; plant-growth-promoting rhizobacteria; potato cyst nematode; rhizobacterium; Rhizobiales; rhizosphere; soil bacteria; soil microorganism; Solanum tuberosum; sugar beet; suicide hatch