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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Rhizobacterial effects on nickel extraction from soil and uptake by Alyssum murale
New Phytologist, Volume 158, No. 1, Year 2003
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Description
Alyssum murale has a remarkable ability to hyperaccumulate Ni from soils containing mostly nonlabile Ni. Here, rhizobacteria are shown to play an important role in increasing the availability of Ni in soil, thus enhancing Ni accumulation by A. murale. Three bacteria, originally isolated from the rhizosphere of A. murale, were examined for their ability to solubilize Ni in soil and for their effect on Ni uptake into Alyssum. Sphingomonas macrogoltabidus, Microbacterium liquefaciens, and Microbacterium arabinogalactanolyticum were added to both sterile and nonsterile Ni-rich Serpentine soil from OR, USA. Sphingomonas macrogoltabidus significantly reduced Ni extraction by 10 mM Sr(NO3)2 from soil, M. arabinogalactanolyticum significantly increased Ni extraction, whereas M. liquefaciens had no effect. Extractability of few other metals was affected by inoculation. When these bacteria were added to surface-sterilized seeds of A. murale grown in nonsterile soil, they increased Ni uptake into the shoot by 17% (S. macrogoltabidus), 24% (M. liquefaciens), and 32.4% (M. arabinogalactanolyticum), compared with uninoculated controls. These results show that bacteria are important for Ni uptake, which from a commercial perspective, could significantly increase revenue generated during phytomining of Ni from soil. © New Phytologist (2003).
Authors & Co-Authors
Abou-Shanab, Reda A.I.
Egypt, New Borg el Arab
Genetic Engineering and Biotechnology Research Institute
Angle, Jay Scott
Unknown Affiliation
Delorme, T. A.
United States, College Park
University of Maryland, College Park
Chaney, R. L.
United States, Washington, D.c.
Usda Agricultural Research Service
van Berkum, Peter B.
United States, Washington, D.c.
Usda Agricultural Research Service
Moawad, Hassan
Egypt, Giza
National Research Centre
Ghanem, K. M.
Egypt, Alexandria
Faculty of Agriculture Sababasha
Ghozlan, Hanan A.
Egypt, Alexandria
Faculty of Agriculture Sababasha
Statistics
Citations: 8
Authors: 8
Affiliations: 5
Identifiers
Doi:
10.1046/j.1469-8137.2003.00721.x
ISSN:
0028646X