7
Plant–Microbe Associations
in Phytoremediation
Asil Nurzhanova, Aigerim Mamirova, Josef Trögl,
Diana Nebeská, and Valentina Pidlisnyuk
Abstract
Microorganisms are important partners with plants in phytotechnology
applications. Plant–microbe relationships in phytoremediation include
those of rhizobacteria which colonize root surfaces and biodegrade
organic contaminants and other organic matter; endophytic bacteria that
colonize the inner surface of plant stems and biodegrade organic compounds; and plant growth-promoting bacteria (PGPB) that have beneficial effects for plants. Plants produce organic substrates for the microbial
populations. Because of root exudates, there are healthy numbers of bacteria near root surfaces that help with nutrient cycling and other ecosystem services. There is an emphasis on plant–microbe associations with
Miscanthus; studies are conducted with and without PGPBs in soils contaminated with metals. Effects of PGPBs on bioconcentration factor and
translocation factor are reported for Miscanthus growing in metal-contaminated soil.
CONTENTS
7.1 Role of Plant–Microbe Association in Phytoremediation .................... 124
7.1.1 Endophytic Bacteria....................................................................... 125
7.1.2 Rhizobacteria.................................................................................. 126
7.2 Impact of PGPB Isolated from Contaminated Soil to
Phytoremediation with Miscanthus........................................................ 128
7.3 Influence of Rhizobacteria Isolated from Miscanthus
Rhizosphere to Phytoremediation of Trace Elements
Contaminated Soil ..................................................................................... 130
7.4 Changing of Soil Microbial Communities during Miscanthus
Production at the Contaminated Military Land ................................... 133
References............................................................................................................. 134
123
Plant–Microbe Associations
in Phytoremediation
Asil Nurzhanova, Aigerim Mamirova, Josef Trögl,
Diana Nebeská, and Valentina Pidlisnyuk
Abstract
Microorganisms are important partners with plants in phytotechnology
applications. Plant–microbe relationships in phytoremediation include
those of rhizobacteria which colonize root surfaces and biodegrade
organic contaminants and other organic matter; endophytic bacteria that
colonize the inner surface of plant stems and biodegrade organic compounds; and plant growth-promoting bacteria (PGPB) that have beneficial effects for plants. Plants produce organic substrates for the microbial
populations. Because of root exudates, there are healthy numbers of bacteria near root surfaces that help with nutrient cycling and other ecosystem services. There is an emphasis on plant–microbe associations with
Miscanthus; studies are conducted with and without PGPBs in soils contaminated with metals. Effects of PGPBs on bioconcentration factor and
translocation factor are reported for Miscanthus growing in metal-contaminated soil.
CONTENTS
7.1 Role of Plant–Microbe Association in Phytoremediation .................... 124
7.1.1 Endophytic Bacteria....................................................................... 125
7.1.2 Rhizobacteria.................................................................................. 126
7.2 Impact of PGPB Isolated from Contaminated Soil to
Phytoremediation with Miscanthus........................................................ 128
7.3 Influence of Rhizobacteria Isolated from Miscanthus
Rhizosphere to Phytoremediation of Trace Elements
Contaminated Soil ..................................................................................... 130
7.4 Changing of Soil Microbial Communities during Miscanthus
Production at the Contaminated Military Land ................................... 133
References............................................................................................................. 134
123