TY  - JOUR
AU  - Zellerhoff, N.
AU  - Jansen, M.
AU  - Schaffrath, U.
TI  - Barley Rom1 antagonizes Rar1 function in Magnaporthe oryzae-infected leaves by enhancing epidermal and diminishing mesophyll defence
JO  - The new phytologist
VL  - 180
SN  - 0028-646X
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - PreJuSER-210
SP  - 702 - 710
PY  - 2008
N1  - Record converted from VDB: 12.11.2012
AB  - * Barley (Hordeum vulgare) is a host for Blumeria graminis f. sp. hordei (Bgh), which causes powdery mildew, and for the rice blast pathogen Magnaporthe oryzae. It has previously been shown that Rar1, initially identified in a mutational screen as being required for Mla12-specified Bgh-resistance, also controlled pathogenic growth of M. oryzae in barley. Here, we tested whether the rom1 mutation (restoration of Mla12-specified resistance), which restored resistance against Bgh in a susceptible rar1-2 genetic background, also influences the interaction between barley and M. oryzae. * Disease severity after infection with M. oryzae was analysed on rar1-2 mutants and rar1-2 rom1 double mutants. Microscopy and northern analysis were used to gain insight into cellular and molecular events. * On rar1-2 rom1 double mutant plants, the number of M. oryzae disease lesions was increased in comparison to the wild-type and the rar1-2 mutant which correlated with augmented epidermal penetration. However, a decrease in the lesion diameter, apparently conditioned in the mesophyll, was also observed. * These results highlight the impact of Rom1 in basal defence of barley against different pathogens. Importantly, a tissue-specific function for Rom1 with contrasting effects on epidermal and mesophyll defence was demonstrated.
KW  - Carrier Proteins: genetics
KW  - Carrier Proteins: metabolism
KW  - Genes, Plant
KW  - Hordeum: cytology
KW  - Hordeum: genetics
KW  - Hordeum: microbiology
KW  - Host-Pathogen Interactions: genetics
KW  - Magnaporthe: pathogenicity
KW  - Mutation
KW  - Plant Diseases: genetics
KW  - Plant Leaves: genetics
KW  - Plant Leaves: physiology
KW  - Plant Proteins: genetics
KW  - Plant Proteins: metabolism
KW  - Virulence
KW  - Carrier Proteins (NLM Chemicals)
KW  - Plant Proteins (NLM Chemicals)
KW  - Rar1 protein, Hordeum vulgare (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:18713313
UR  - <Go to ISI:>//WOS:000260105000018
DO  - DOI:10.1111/j.1469-8137.2008.02597.x
UR  - https://juser.fz-juelich.de/record/210
ER  -