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@ARTICLE{Weidner:276261,
author = {Weidner, Simone and Koller, Robert and Latz, Ellen and
Kowalchuk, George and Bonkowski, Michael and Scheu, Stefan
and Jousset, Alexandre},
title = {{B}acterial diversity amplifies nutrient-based plant-soil
feedbacks},
journal = {Functional ecology},
volume = {29},
number = {10},
issn = {0269-8463},
address = {Oxford [u.a.]},
publisher = {Wiley-Blackwell},
reportid = {FZJ-2015-06724},
pages = {1341 - 1349},
year = {2015},
abstract = {Plants foster diverse assemblages of bacteria in the
rhizosphere serving important functions which may result in
enhanced plant growth. Microbial diversity is increasingly
recognized to shape the functionality of microbial
communities. This leads to the assumption that there is a
positive relationship between rhizosphere diversity and
plant growth. Here we investigate how bacterial diversity
affects the mineralization of organic matter and plant
nutrient acquisition.We hypothesized that altered bacterial
diversity will affect nitrogen mineralisation, uptake by
plants and ultimately plant growth. We set up a controlled
model system with Arabidopsis thaliana colonized by defined
assemblages of fluorescent pseudomonads, a
well-characterised plant-beneficial rhizosphere taxon. The
growth substrate contained casein as sole nitrogen source,
making the plant nitrogen uptake dependant on breakdown by
bacterial enzymes.Bacterial diversity was associated with a
higher enzyme activity which increased nitrogen
mineralization and enhanced plant growth. The effect of
bacterial diversity on plant growth increased with time,
pointing to a positive feedback between bacteria and plants:
Bigger plants associated with species-rich bacterial
communities supported more bacterial growth, which further
enhanced the impact of bacteria on plant growth.We
demonstrate that plant-soil feedbacks establish rapidly
during one single growth season and that bacterial diversity
modulates this interaction. Preserving soil microbial
diversity therefore may improve positive plant-soil
feedbacks and thereby plant growth. Bacterial diversity
amplifies nutrient-based plant-soil feedbacks (PDF Download
Available).},
cin = {IBG-2},
ddc = {570},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {582 - Plant Science (POF3-582)},
pid = {G:(DE-HGF)POF3-582},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000362395400012},
doi = {10.1111/1365-2435.12445},
url = {https://juser.fz-juelich.de/record/276261},
}