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@ARTICLE{Wolff:887973,
author = {Wolff, Jan and Hofmann, Diana and Koch, Maximilian and Bol,
Roland and Schnepf, Andrea and Amelung, Wulf},
title = {{B}ioavailability and -accessibility of subsoil allocated
33{P}-labelled hydroxyapatite to wheat under different
moisture supply},
journal = {Scientific reports},
volume = {10},
number = {1},
issn = {2045-2322},
address = {[London]},
publisher = {Macmillan Publishers Limited, part of Springer Nature},
reportid = {FZJ-2020-04559},
pages = {17140},
year = {2020},
abstract = {Information on the bioavailability and -accessibility of
subsoil phosphorus (P) and how soil moisture affects its
utilization by plants is scarce. The current study examined
whether and to which degree wheat acquires P from subsoil
allocated hydroxyapatite and how this could be affected by
soil moisture. We investigated the 33P uptake by growing
wheat in two rhizotron trials (soil and sand) with
integrated 33P-labelled hydroxyapatite hotspots over a
period of 44 days using digital autoradiography imaging and
liquid scintillation counting. We applied two irrigation
scenarios, mimicking either rainfall via topsoil watering or
subsoil water storage. The plants showed similar biomass
development when grown in soil, but a reduced growth in sand
rhizotrons. Total plant P(tot) stocks were significantly
larger in plants grown under improved subsoil moisture
supply, further evidenced by enhanced P stocks in the ears
of wheat in the sand treatment due to an earlier grain
filling. This P uptake is accompanied by larger 33P signals,
indicating that the plants accessed the hydroxyapatite
because subsoil irrigation also promoted root proliferation
within and around the hotspots. We conclude that even within
a single season plants access subsoil mineral P sources, and
this process is influenced by water management.},
cin = {IBG-3},
ddc = {600},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33051570},
UT = {WOS:000582694000007},
doi = {10.1038/s41598-020-74225-3},
url = {https://juser.fz-juelich.de/record/887973},
}