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@INPROCEEDINGS{RoblesAguilar:256123,
author = {Robles Aguilar, Ana Alejandra and Grunert, O. and Boon, N.
and Temperton, Vicky and Blossfeld, Stephan and
Hernandez-Sanabria, E. and Reheul, D. and Jablonowski,
Nicolai David},
title = {{M}icrobial community structure in the rhizosphere of
narrow-leafed lupin and tomato as related to nitrogen form
provided},
reportid = {FZJ-2015-06132},
year = {2015},
abstract = {Ammonia-oxidizing bacteria (AOB) and nitrite oxidizing
bacteria (NOB) are the most important organisms responsible
for ammonia and nitrite oxidation in agricultural ecosystems
and growing media. Ammonia and nitrite oxidation are
critical steps in the soil nitrogen cycle and can be
affected by the application of mineral fertilizers or
organic fertilizers. The microbial community and structure
associated with the growing medium will also be influenced
by the plant species identity. The functionality of the
microbial community has a major impact on the nutrient
turnover and will finally influence plant performance. In
our study, we used two different plant species from
different functional groups. Lupin, a legume that makes a
nitrogen-fixing symbiosis with the microbial community and
tomato, both with the availability to exudate nutrient
mobilizing acids. We studied plant performance in rhizotrons
(a phentotyping system for imaging roots), including an
optical method (planar optodes) for non-invasive,
quantitative and high-resolution imaging of pH dynamics in
the rhizosphere and adjacent medium. The horticultural
growing medium was supplemented with organic-derived
nitrogen or ammonium derived from struvite. The possible
differences in the root structure between treatments is
compared with the total root length. Destructive growing
medium sampling and high throughput sequencing analysis of
the bacterial abundance of the communities present in the
rhizosphere and the bulk soil will be used in order to study
the growing medium-associated microbial community structure,
and this will be related to pH changes in the rhizosphere
and the bulk soil. Our hypothesis is that the growing
medium-associated microbial community structure changes
depending on the nitrogen form provided, the plant species
used, the rhizosphere and bulk soil. We expect a higher
abundance of bacteria in the treatment with organic
fertilizer and a higher abundance of AOB and NOB in the
rhizosphere in comparison to the bulk soil.},
month = {Jun},
date = {2015-06-21},
organization = {Rhizosphere 4, Maastricht
(Netherlands), 21 Jun 2015 - 25 Jun
2015},
subtyp = {After Call},
cin = {IBG-2},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582)},
pid = {G:(DE-HGF)POF3-582},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/256123},
}