Tag: Biotic Interactions

Rodococcus bacteria are often identified as causal agents in disease outbreaks. Savory et al. analyzed 60 isolates from diseased plants. By comparing these new isolates and previous isolates, they found that 64 of 66 pathogenic isolates carry a linear virulence plasmid, and that all but four carried…

Broad-Spectrum Disease Resistance in Tomato Zhu et al. examine how a plant receptor protein confers broad-spectrum resistance to various tospovirus pathogens https://doi.org/10.1105/tpc.17.00180 By Min Zhu, Savithramma P. Dinesh-Kumar, and Xiaorong Tao Background: Highly evolved microbes cause…

Water, a principal component on earth has also a fundamental role in maintenance of plants, microbes and the disease that is shaped by such interaction. Pathogenic disease outbreaks occur only in favorable environmental conditions, and atmospheric humidity is essential for pathogenesis. This review by…

NLR (Nucleotide-binding site leucine-rich repeat resistance) genes help plants recognize pathogens. Munch et al. looked at expression pattern data of 1,235 NLRs from nine plant species. The distribution of NLR gene expression between shoot and root is relatively constant within a species, and for most…

Rust fungi represent an important group of plant pathogens, many of which have heteroecious lifestyles (meaning that they require two alternate hosts). However, the molecular mechanisms used by these pathogens for suppression and colonization of multiple hosts are poorly understood.  Lorrain et al.…

Extracellular vesicles (EVs) are membrane-released structures that play a role in cell-to-cell communication. These vesicles in plants have been poorly studied although they are predicted to have a role in defense upon pathogen infection. Regente et al. have characterized EVs from sunflower by transmission…

Remodeling of the actin network in plant cells involves the severing, depolymerization and polymerization of F-actin.  A variety of actin-binding proteins are involved in remodeling of the actin cytoskeleton, including the actin-depolymerizing factor (ADF) family of proteins. As a result of their ability…

It might sound odd, but so far it was hard to find a nice pathogen infecting model legume plants. Fuechtbauer and colleagues showed the capacity of an oomycete (Phytophtora palmivora) to infect Lotus japonicus and describe how a LysM receptor, LYS12, is partly mediating this plant-microbe interaction.…