TY  - THES
AU  - Le Marié, C.
TI  - Influence of nutrient and metal concentration on root exudation under waterlogged conditions
PB  - RWTH Aachen
VL  - Diplom (Univ.)
M1  - PreJuSER-14847
PY  - 2011
N1  - Record converted from VDB: 12.11.2012
N1  - Aachen, RWTH, Dipl., 2011
AB  - The worldwide energy demand constantly increases and the search for regenerative
AB  - alternatives is inevitable. A concept that exploits a bioenergy source in situ is the plant
AB  - Microbial fuel cell (MFC). The plant-MFC uses the natural interplay between electrogenic
AB  - bacteria in soil and plants to convert solar energy into green electricity.
AB  - The interplay between bacteria and plant is based on the rhizodeposition of organic
AB  - compounds into the rhizosphere. It is known, that low phosphate (P) content in the soil as
AB  - well as a high Aluminum (Al) concentration can induce an enhanced exudation of organic
AB  - compounds by plants into the rhizosphere. However, so far little is known about the factors
AB  - that influence the rhizodeposition under waterlogged conditions. Thus, the aim of this study
AB  - was to increase the exudation of several plants into the rhizosphere under waterlogged
AB  - conditions by treating the plants with low P content or Al addition. Total organic carbon and
AB  - inorganic carbon analyses indicated that a reduction of P supply induced a twofold increased
AB  - release of organic compounds in waterlogged Spartina anglica, a threefold in Hemarthria
AB  - altissima and a fivefold in Glyceria maxima plants. In contrast, the addition of Al did not affect
AB  - the root exudation of any screened plant species. It is likely, that the screened plants use
AB  - other mechanisms to detoxify the Al in the nutrient solution such as absorption into the
AB  - symplasm or pH modifications of the rhizosphere. In future studies it should be tested, if a
AB  - reduction of P in the plant-MFC is a possible tool to increase the productivity of the plant-
AB  - MFC without affecting plant development and health.
LB  - PUB:(DE-HGF)10
UR  - https://juser.fz-juelich.de/record/14847
ER  -