Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 489002
Title Fungal LysM effectors: more than pathogen tools for host modulation?
Author(s) Rojas Padilla, J.E.; Kombrink, A.; Sánchez-Vallet, A.; Thomma, B.P.H.J.
Source In: Book of Abstracts 28th Fungal Genetics Conference. - - p. 212 - 212.
Event 28th Fungal Genetics Conference, Pacific Grove, CA, USA, 2015-03-17/2015-03-22
Department(s) Laboratory of Phytopathology
EPS-2
Publication type Abstract in scientific journal or proceedings
Publication year 2015
Abstract Filamentous fungal effector biology has been studied as a mechanism to deregulate the immune response during colonisation of a host. During plant colonisation, LysM effectors like Mg3LysM from the wheat pathogen Mycosphaerella graminicola or Ecp6 from the tomato pathogen Cladosporium fulvum have been shown to block Chitin Triggered Immunity (CTI) through different strategies: while Mg3LysM binds chitin and protects the cell wall against chitinases, Ecp6 sequesters chitin fragments with ultrahigh affinity to avoid recognition. In nature, nonetheless, filamentous fungi also interact with a complex community of microorganisms inside and outside their host. Recent data revealed that the fungal LysM effector Mg1LysM from M. graminicola not also binds chitin monomers but it can bind N-Acetylmuramic acid as well, a bacterial cell wall component. In tests in vitro, MgLysMs have the capacity to prevent bacterial attachment to the hyphae, while conferring protection to the cell wall towards chitinases. Additionally, Mg1LysM protein prevents degradation of the hyphae in presence of antagonistic bacteria in vitro. This data suggest that LysM effectors may play a role in interaction with (antagonistic) bacteria protecting the cell wall against chitinases secreted by antagonist microbes or by scavenging chitin to avoid attraction of antagonistic microorganisms. Considering that around 300 LysM effector proteins have been predicted in more than 70 fungal species with different lifestyles including pathogens, endophytes, and saprophytes; it is interesting to explore what functions LysM effector proteins may have during interactions with other microorganisms in different environments.
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