Record ID No. |
2384 |
Author(s) |
Cozzolino V, Pigna M, Di Meo V, Caporale A G, Violante A , 2010 |
Affiliation |
Dipartimento di Scienze del Suolo, della Pianta e dell’Ambiente, Università di Napoli Federico II, Napoli, Italy, Email: cozzolino.vincenza@libero.it |
Title |
Effects of arbuscular mycorrhizal inoculation and phosphorus supply on the growth of Lactuca sativa L. and arsenic and phosphorus availability in an arsenic polluted soil under non-sterile conditions |
Source. Vol.(no):Page |
Applied Soil Ecology, 45(3): 262-268p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Pollution |
Sub-subjects |
Soil pollution |
Host |
Lactuca sativa |
Organism |
Arbuscular Mycorrhiza (AM) |
Country |
Italy, Southern Europe |
Abstracts |
The role of phosphorus (P) application and arbuscular mycorrhizal fungi (AMF) on growth, arsenic (As) and
P accumulation in lettuce plants growing in an As-polluted soil (total As 250mgkg−1), was investigated. In
particular, it was tested whether application of a commercial inoculum (CI), with (+P at 90 kg P ha−1) and
without (−P at 0kgPha−1) P fertilizer, supported greater plant growth and provided more P, enhancing
As tolerance, than indigenous fungi alone. The influence of these treatments on As and P availability
in the rhizosphere and bulk soils was also investigated. Greenhouse pot experiments were established
where plants were grown with and without commercial inoculum (+CI, −CI) in unsterilized conditions.
Inoculation with commercial inoculum and P application together considerably increased plant biomass,
by enhancing host plant P nutrition and lowering shoot and root As concentrations compared to plants
inoculated only with native AMF. In the rhizosphere of +CI+P plants there was P soil depletion compared
to −CI+P. The results evidenced that, with P addition, inoculation with commercial inoculum alleviated
the toxicity of excessive As by improving P nutrition without increasing As concentrations in the plant,emphasizing the role of beneficial microbes and P fertilizer to improve soil fertility in As-contaminated soil.
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