disease-susceptibility
Disease susceptibility in plants refers to the genetic and molecular factors that make a plant vulnerable to infection by pathogens such as fungi, bacteria, viruses, and nematodes. Understanding these susceptibility mechanisms is critical for plant science because it reveals the counterpart to plant immunity — identifying susceptibility genes (S-genes) allows researchers to develop crops with durable, broad-spectrum resistance through targeted breeding or gene editing. This knowledge is increasingly important for global food security, as it offers strategies to reduce crop losses without relying solely on chemical pesticides.
PubMed · 2026-04-01
Researchers found that gut bacteria differences between two mouse populations predict how severely they develop a condition similar to inflammatory bowel disease. Certain gut bacterial byproducts (metabolites) were linked to either protection from or susceptibility to gut inflammation.
Mice from Charles River labs had higher levels of a specific immune cell type (Th17) and gut antibodies, making them more susceptible to chemically induced colitis than Jackson lab mice.
Co-housing susceptible and resistant mice transferred increased disease susceptibility, directly implicating the microbiome as the driver rather than genetics.
Targeted metabolomics identified specific gut bacterial metabolites that were either positively or negatively correlated with colitis severity, suggesting biomarker potential.