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  • Title: Elicitin recognition confers enhanced resistance to Phytophthora infestans in potato.
    Author: Du J, Verzaux E, Chaparro-Garcia A, Bijsterbosch G, Keizer LC, Zhou J, Liebrand TW, Xie C, Govers F, Robatzek S, van der Vossen EA, Jacobsen E, Visser RG, Kamoun S, Vleeshouwers VG.
    Journal: Nat Plants; 2015 Mar 30; 1(4):15034. PubMed ID: 27247034.
    Abstract:
    Potato late blight, caused by the destructive Irish famine pathogen Phytophthora infestans, is a major threat to global food security(1,2). All late blight resistance genes identified to date belong to the coiled-coil, nucleotide-binding, leucine-rich repeat class of intracellular immune receptors(3). However, virulent races of the pathogen quickly evolved to evade recognition by these cytoplasmic immune receptors(4). Here we demonstrate that the receptor-like protein ELR (elicitin response) from the wild potato Solanum microdontum mediates extracellular recognition of the elicitin domain, a molecular pattern that is conserved in Phytophthora species. ELR associates with the immune co-receptor BAK1/SERK3 and mediates broad-spectrum recognition of elicitin proteins from several Phytophthora species, including four diverse elicitins from P. infestans. Transfer of ELR into cultivated potato resulted in enhanced resistance to P. infestans. Pyramiding cell surface pattern recognition receptors with intracellular immune receptors could maximize the potential of generating a broader and potentially more durable resistance to this devastating plant pathogen.
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