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@ARTICLE{Schneebeli:817877,
author = {Schneebeli, Katharina and Mathesius, Ulrike and Zwart,
Alexander B. and Bragg, Jennifer N. and Vogel, John P. and
Watt, Michelle},
title = {{B}rachypodium distachyon genotypes vary in resistance to
{R}hizoctonia solani {AG}8},
journal = {Functional plant biology},
volume = {43},
number = {2},
issn = {1445-4408},
address = {Collingwood, Victoria},
publisher = {CSIRO Publ.},
reportid = {FZJ-2016-04483},
pages = {189 - 198},
year = {2016},
abstract = {Brachypodium distachyon (L.) P.Beauv. (Bd) has previously
been developed as a pathosystem model for the wheat root rot
pathogen Rhizoctonia solani Kühn anastomosis group 8 (AG8).
Here we explore variation in resistance to R. solani AG8 in
Bd, to determine whether genomic tools could be used to find
Bd genes involved in the grass defence response, with the
aim of using this information for the improvement of
Rhizoctonia root rot resistance in wheat. We looked for
variation in resistance to R. solani AG8 in a diverse Bd
natural accession collection and in Bd T-DNA insertion lines
selected based on putative mechanisms reported for tagged
genes. All lines were susceptible to the pathogen.
Repeatable and significant variation in resistance was
measured in both groups, with greater variation in
resistance found across the natural accessions than in the
T-DNA lines. The widest and most repeatable variation in
resistance was between lines Koz-3 and BdTR 13a. The ratio
of R. solani AG8-inoculated to uninoculated root length for
line Koz-3 was $33\%$ greater than the same ratio for line
BdTR 13a. The increased resistance of Koz-3 was associated
with nodal root initiation in response to the pathogen. A
negative correlation between seedling vigour and resistance
was observed, but found not to be the sole source of
variation in resistance to R. solani AG8. The only T-DNA
line with significantly greater resistance to R. solani AG8
than the reference line had an insertion in a putative
galactosyltransferase gene; however, this result needs
further confirmation. Genetic resistance to Rhizoctonia root
rot is not available in wheat cultivars and only a few
instances of quantitative resistance to the pathogen have
been described within close relatives of wheat. Brachypodium
distachyon offers potential for further investigation to
find genes associated with quantitative resistance and
mechanisms of tolerance to R. solani AG8.},
cin = {IBG-2},
ddc = {580},
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:000368036300009},
doi = {10.1071/FP15244},
url = {https://juser.fz-juelich.de/record/817877},
}