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Showing papers on "Phosphate solubilizing bacteria published in 1976"


Journal ArticleDOI
TL;DR: Culture supernatant fluids of 50 phosphate-dissolving bacteria isolated from rhizospheres of crop plants were examined for IAA, gibberellins and cytokinins and plant growth inhibitors were detected in cultures of some isolates.
Abstract: Culture supernatant fluids of 50 phosphate-dissolving bacteria isolated from rhizospheres of crop plants were examined for IAA, gibberellins and cytokinins. These bacteria possessed phytase activity and 27 could dissolve rock phosphate. Twenty bacteria synthesized all 3 types of plant hormones, 43 produced IAA, 29 formed gibberellins and 45 cultures produced cytokinin-like substances. Of the 50 bacteria tested 28 decomposed IAA. Plant growth inhibitors were detected in cultures of some isolates. The ecological significance of these rhizosphere bacteria and their mode of action when used as inoculants is considered.

213 citations


Journal ArticleDOI
TL;DR: Interactions between vesicular-arbuscular mycorrhizal fungi and phosphate-solubilizing bacteria were studied in a low-phosphate alkaline soil amended with 0, 0.1% and 0.5% rock phosphate to find plants not inoculated with bacteria or Endogone derived no benefit from the rock phosphate.
Abstract: Interactions between vesicular-arbuscular (VA) mycorrhizal fungi and phosphate-solubilizing bacteria were studied in a low-phosphate alkaline soil amended with 0, 0.1% and 0.5% rock phosphate. Endogone (E3 and yellow vacuolate spore types) and two bacteria able to solubilize rock phosphate in vitro and produce plant growth regulating substances were used as inocula. Lavender ( Lavandula spica var. vera L.) plants with mycorrhiza plus bacteria (either E3 plus bacteria or “yellow vacuolate” plus bacteria treatments) took up more total P than plants with either Endogone or bacteria separately at each concentration of rock phosphate. Plants not inoculated with bacteria or Endogone derived no benefit from the rock phosphate.

161 citations


01 Dec 1976
TL;DR: The depth at the station was recorded on marine environments were sparse Insoluble organic the disc attached to the winch, and inortganic phosphorus compornds were rendered not corrected for wire angle as it did not exceed.
Abstract: PH?PPHORl!S economy of . stuaries was. ext~nmeter: ~ight penetra~ion. was me~sured with a sl\fely studIedH, but studIJes on the mIcrobIal SecchI dISCand the extmctron coefficIent was ca1cuparticipation in phospha e regeneration in lated. The depth at the station was recorded on marine dnvironments were sparse Insoluble organic the disc attached to the winch. The depth was and inortganic phosphorus compornds were rendered not corrected for wire angle as it did not exceed