The fungal ribonuclease-like effector protein CSEP0064/BEC1054 represses plant immunity and interferes with degradation of host ribosomal RNA
Powdery mildews are common plant diseases which affect important crop plants including cereals such as wheat and barley.Pennington et al. propose a novel mechanism of action for the RNase-like effectors in powdery mildews: they may act as pseudoenzymes to inhibit the host RIPs, known components of plant immune responses that lead to cell death.
Image credit: Pennington HG, et al. (2019)