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@ARTICLE{Jansen:1650,
author = {Jansen, M. and Schaffrath, U.},
title = {{T}he barley mutant emr2 shows enhanced resistance against
several fungal leaf pathogens},
journal = {Plant breeding},
volume = {128},
issn = {0179-9541},
address = {Oxford [u.a.]},
publisher = {Wiley-Blackwell},
reportid = {PreJuSER-1650},
pages = {124 - 129},
year = {2009},
note = {The authors are very grateful to Prof. A. J. Slusarenko for
helpful discussion on the segregation analysis and for
critical reading of the manuscript. Prof. J. Leon is kindly
acknowledged for the multiplication of barley cultivars and
mutants. We thank Dr J.- B. Speakman, BASF, Ludwigshafen,
Germany for assistance with Drechslera teres and
Rhynchosporium secalis. MJ was supported temporarily by a
grant of the RWTH Aachen University.},
abstract = {Homozygous mlo-barley plants are resistant to barley
powdery mildew but hypersusceptible to the rice blast fungus
Magnaporthe oryzae. A mutational analysis was performed in
the barley back-cross line BCIngrid mlo5 which led to the
identification of two mutants with enhanced capacity to
resist infections by M. oryzae, referred to as enhanced M.
oryzae resistance mutants emr1 and emr2. Here, we report on
the characterization of emr2 mutant plants which not only
show an almost complete reduction in disease severity after
inoculation with M. oryzae but are also resistant to the
necrotrophic fungi Drechslera teres and Rhynchosporium
secalis. Histological analysis revealed that resistance to
M. oryzae was based mainly on the formation of papillae at
sites of attempted penetration into epidermal cells. There
was no progression of fungal growth into the mesophyll.
Additionally, because of the presence of the mlo-allele,
emr2-plants retained resistance to powdery mildew. The
emr2-conditioned broad spectrum resistance was inherited as
in a recessive manner. Monitoring of PR-gene expression and
enzymatic activity of peroxidases revealed a constitutively
activated defence in emr2.},
cin = {ICG-3},
ddc = {580},
cid = {I:(DE-Juel1)ICG-3-20090406},
pnm = {Terrestrische Umwelt},
pid = {G:(DE-Juel1)FUEK407},
shelfmark = {Agronomy / Biotechnology $\&$ Applied Microbiology / Plant
Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000264819900003},
doi = {10.1111/j.1439-0523.2008.01604.x},
url = {https://juser.fz-juelich.de/record/1650},
}