Microbial communities associated with the bio-energy plant Miscanthus

Germaine KJ, Otieno N, Culhane J, Menton C, Keogh E, Brazil D, Dowling D. Microbial communities associated with the bio-energy plant Miscanthus. 18-21 May 2012, Aldemar Hotel, Rhodes, Greece: New Phytologist Organisation; 2012.


in improving the phytoremediation capacity of plants. This study investigated the
culturable-aerobic bacterial diversity associated with the bio-energy plant
Miscanthus giganteus. 250 bacterial strains were isolated from Miscanthus and 70 of
these strains were identified through 16S rDNA sequencing. Eleven different species
were identified in Miscanthus originating from the leaf, stem and rhizome tissues.
The majority of these isolates were gamma-Proteobacteria with Pseudomonas and
Acinetobacter species dominating. Many of these strains expressed plant growth
promotion traits such as phytohormone production and phosphate solubilisation
ability. The majority of the isolates were found to possess resistance to heavy
metals and 7-13% possessed inherent organic xenobiotic degradation abilities. A
number of these isolates were tagged with a gfp:kanamycin marker and were found
to colonise the rhizosphere of inoculated plants. These isolates may prove to be
useful inoculants for improving plant biomass and phytoremediation efficiency of

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