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@ARTICLE{Nestler:825873,
author = {Nestler, Josefine and Wissuwa, Matthias},
title = {{S}uperior {R}oot {H}air {F}ormation {C}onfers {R}oot
{E}fficiency in {S}ome, {B}ut {N}ot {A}ll, {R}ice
{G}enotypes upon {P} {D}eficiency},
journal = {Frontiers in Functional Plant Ecology},
volume = {7},
issn = {1664-462X},
address = {Lausanne},
publisher = {Frontiers Media88991},
reportid = {FZJ-2017-00157},
pages = {1935},
year = {2016},
abstract = {Root hairs are a low-cost way to extend root surface area
(RSA), water and nutrient acquisition. This study
investigated to what extend variation exists for root hair
formation in rice in dependence of genotype, phosphorus (P)
supply, growth medium, and root type. In general, genotypic
variation was found for three root hair properties: root
hair length, density, and longevity. In low P nutrient
solution more than twofold genotypic difference was detected
for root hair length while only onefold variation was found
in low P soil. These differences were mostly due to the
ability of some genotypes to increase root hair length in
response to P deficiency. In addition, we were able to show
that a higher proportion of root hairs remain viable even in
mature, field-grown plants under low P conditions. All
investigated root hair parameters exhibited high
correlations across root types which were always higher in
the low P conditions compared to the high P controls.
Therefore we hypothesize that a low P response leads to a
systemic signal in the entire root system. The genotype
DJ123 consistently had the longest root hairs under low P
conditions and we estimated that, across the field-grown
root system, root hairs increased the total RSA by $31\%$ in
this genotype. This would explain why DJ123 is considered to
be very root efficient in P uptake and suggests that DJ123
should be utilized as a donor in breeding for enhanced P
uptake. Surprisingly, another root and P efficient genotype
seemed not to rely on root hair growth upon P deficiency and
therefore must contain different methods of low P
adaptation. Genotypic ranking of root hair properties did
change substantially with growth condition highlighting the
need to phenotype plants in soil-based conditions or at
least to validate results obtained in solution-based growth
conditions.},
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:000390171900001},
pubmed = {pmid:28066487},
doi = {10.3389/fpls.2016.01935},
url = {https://juser.fz-juelich.de/record/825873},
}