Matthias Freh

ORCID: 0000-0002-7969-3166
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About
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Research Areas
  • Plant-Microbe Interactions and Immunity
  • Mycorrhizal Fungi and Plant Interactions
  • Plant pathogens and resistance mechanisms
  • Plant Pathogens and Fungal Diseases
  • Plant tissue culture and regeneration
  • Plant Parasitism and Resistance
  • Plant Pathogens and Resistance
  • Powdery Mildew Fungal Diseases
  • Wheat and Barley Genetics and Pathology
  • Nematode management and characterization studies
  • Legume Nitrogen Fixing Symbiosis

RWTH Aachen University
2020-2025

The plant immune system is well equipped to ward off the attacks of different types phytopathogens. It primarily relies on two sensors-plasma membrane-resident receptor-like kinases and intracellular nucleotide-binding domain leucine-rich repeat (NLRs) receptors that engage preferentially in pattern- effector-triggered immunity, respectively. Delicate fine-tuning, particular NLR-governed branch key prevent inappropriate deleterious activation responses. Inadequate NLR allele constellations,...

10.1093/plphys/kiab590 article EN cc-by-nc-nd PLANT PHYSIOLOGY 2021-12-23

Abstract Powdery mildew fungi are serious pathogens affecting many plant species. Their genomes encode extensive repertoires of secreted effector proteins that suppress host immunity. Here, we revised and analyzed the candidate protein (CSEP) effectome powdery fungus, Blumeria hordei (Bh). We identified seven putative effectors broadly conserved in species, suggesting they core these phytopathogens. showed one effectors, CSEP0214, interacts with barley (Hordeum vulgare) vacuolar sorting 18...

10.1093/plphys/kiaf067 article EN cc-by-nc-nd PLANT PHYSIOLOGY 2025-02-20

Barley mlo mutants are well known for their profound resistance against powdery mildew disease. Recently, mutant plants were generated in hexaploid bread wheat (Triticum aestivum) with the help of transgenic (transcription-activator-like nuclease, TALEN) and non-transgenic (targeted induced local lesions genomes, TILLING) biotechnological approaches. While full-gene knockouts three Mlo (TaMlo) homoeologs, created via TALEN, confer full to pathogen (Blumeria graminis f.sp. tritici), currently...

10.3390/genes11050517 article EN Genes 2020-05-07

Powdery mildew-resistant barley (Hordeum vulgare) and Arabidopsis thaliana mlo mutant plants exhibit pleiotropic phenotypes such as the spontaneous formation of callose-rich cell wall appositions early leaf chlorosis necrosis, indicative premature senescence. The exogenous factors governing occurrence these undesired side effects remain poorly understood. Here, we characterised symptoms in detail. Ultrastructural analysis revealed that depositions spontaneously formed A. mutants are...

10.1111/pce.14884 article EN cc-by-nc-nd Plant Cell & Environment 2024-03-22

SUMMARY Loss‐of‐function alleles of plant MLO genes confer broad‐spectrum resistance to powdery mildews in many eudicot and monocot species. Although barley ( Hordeum vulgare ) mlo mutants have been used agriculture for more than 40 years, understanding the molecular principles underlying this type disease remains fragmentary. Forward genetic screens revealed mutations two Required Ror that partially impair immunity conferred by mutants. While Ror2 encodes a soluble N...

10.1111/tpj.15930 article EN cc-by-nc-nd The Plant Journal 2022-08-02

Barley mlo mutants are well known for their profound resistance against powdery mildew disease. Recently, mutant plants were generated in hexaploid bread wheat (Triticum aestivum) with the help of transgenic (transcription-activator-like nuclease, TALEN) and non-transgenic (targeted induced local lesions genomes, TILLING) biotechnological approaches. While full gene knockouts three Mlo (TaMlo) homoeologs, created via TALEN, confer to pathogen (Blumeria graminis f.sp. tritici), currently...

10.20944/preprints202003.0429.v1 preprint EN 2020-03-29
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