Indole acetic acid and phytase activity produced by rhizosphere bacilli as affected by pH and metals

Acuna, J. J. and Jorquera, M. A. and Martinez, O. A. and Menezes-Blackburn, D. and Fernandez, M. T. and Marschner, P. and Greiner, R. and Mora, M. L. (2011) Indole acetic acid and phytase activity produced by rhizosphere bacilli as affected by pH and metals. Journal of Soil Science and Plant Nutrition, 11 (3). pp. 1-12. ISSN 0718-9516

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Abstract

The abilities to produce indole acetic acid (IAA) and mineralize organic phosphorus by phytase are desirable traits in plant-growth promotion rhizobacteria (PGPR) particularly in Chilean Andisols which are characterized by low pH and high total P. However, little is known about the influence of soil properties that are specific to Andisol (low pH and metal toxicity) on the effectiveness of PGPR. Here, we assessed the effect of pH and metal cations on IAA and phytase activity of cell-associated proteins produced by two bacilli strains isolated from the rhizosphere of pasture plants. The production in vivo of IAA by Paenibacillus sp. SPT-03 was significantly increased (7-fold) when incubated in tenfold diluted culture medium, compared to the full-strength medium. At low pH (pH

Item Type:
Journal Article
Journal or Publication Title:
Journal of Soil Science and Plant Nutrition
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1100/1110
Subjects:
ID Code:
84219
Deposited By:
Deposited On:
24 Jan 2017 09:18
Refereed?:
Yes
Published?:
Published
Last Modified:
20 Sep 2020 03:45