Bioaugmentation-Assisted Phytostabilisation of Abandoned Mine Sites in South West Sardinia.
Bull Environ Contam Toxicol
; 98(3): 310-316, 2017 Mar.
Article
in En
| MEDLINE
| ID: mdl-27385370
ABSTRACT
Bioaugmentation-assisted phytoremediation implies the administration of selected plant growth promoting bacteria, which significantly improve plant growth and sequestration of heavy metals. In this work, 184 bacterial strains associated with roots of Pistacia lentiscus were isolated from plants spontaneously growing in the abandoned Sardinian mining areas (SW Sardinia, Italy) and phylogenetically characterised. Twenty-one bacterial isolates were assayed for properties relevant for plant growth promotion and metal tolerance. Five different strains, belonging to the genera Novosphingobium, Variovorax, Streptomyces, Amycolatopsis, Pseudomonas, were selected based on their properties for the greenhouse phytoremediation tests. Among the tested inocula, the strain Variovorax sp. RA128A, able to produce ACC deaminase and siderophore, was able to significantly enhance germination and increase length and weight of shoots and roots. Irrespective of the applied treatment, mastic shrub was able to accumulate Cd, Pb and Zn especially in roots.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Biodegradation, Environmental
/
Plant Roots
/
Metals, Heavy
/
Pistacia
/
Mining
Country/Region as subject:
Europa
Language:
En
Journal:
Bull Environ Contam Toxicol
Year:
2017
Document type:
Article