Multiple pairs of allelic MLA immune receptor-powdery mildew AVRA effectors argue for a direct recognition mechanism oleh Isabel ML Saur, Saskia Bauer, Barbara Kracher, Xunli Lu, Lamprinos Franzeskakis, Marion C Müller, Björn Sabelleck, Florian Kümmel, Ralph Panstruga, Takaki Maekawa, Paul Schulze-Lefert