Tag: Pathogens

A review of the past 50 years of plant immunity by Jones, Staskawicz, and Dangl? Yes please! I particularly enjoy historical perspectives of a discipline, as they frame conceptual breakthroughs with the benefit of hindsight. As the article lays out, understanding the plant immune system benefitted greatly…

What do you do when you’ve identified a gene that you know is important, but you don’t know how it functions? Usually, you can get hints from homology searches, overexpression studies, or the identification of protein domains, but sometimes those approaches don’t work. That’s where the story…

Plant pathogenic bacteria of the genus Clavibacter tend to have a narrow host range, but different species affect many important crops. Clavibacter michiganensis (Cm) causes bacterial wilt and canker in tomato, pepper and a few varieties of eggplant. There are no Cm-resistant tomato varieties but many…

NLPs (Necrosis and ethylene-inducing peptide 1–like proteins) are small peptides produced by a variety of plant pathogens. Some NLPs are cytolysins meaning that they trigger lysis of their target cells. Here, Pirc et al. use an assortment of tools including molecular dynamics (MD) simulations, neutron…

Much of our understanding of plant immunity comes from studies of pathogens that infect mesophyll tissues, (e.g., Pseudomonas syringae). However, there are many pathogens that specifically invade vascular tissues (e.g., Xanthomonas oryzae pv. oryzae; Xoo), which causes rice bacterial blight. In a recent…

It’s like the plot of every spy movie you’ve ever seen. If you could infiltrate your opponent’s headquarters what would you target to disable your enemy? This is the question addressed in new work by Petre et al. More than ten years ago, a family of small proteins was identified, the RXLR proteins…

As a way to circumnavigate the plant innate immune system, phytopathogens evolved effector molecules that protect the pathogen from the plant’s defenses. SAP05, an effector from the insect-vectored phytoplasma Candidatus (a bacterial obligate parasite), is responsible for the plant phenotype observed…

One of the great questions in plant science has been, “How do plants recognize friend from foe?” Like most great questions, this one benefits from a historical perspective. In their new review, Delaux and Schornack look at plant evolution through the lens of plant interactions with symbiotic and…