A real Paeonia in the neck! First report of Xanthomonas hortorum on peony

Excited to share our recent publication in Plant Disease describing X. hortorum on peony. We collaborated with Prof. Francesca Hand and the OSU Ornamental Pathology lab to use traditional plant pathology and Next Generation sequencing approaches to diagnose bacterial blight of peony in Ohio.

X. hortorum on peony appears to be a nationwide issue and was first reported in the US in Virginia. Keep an eye on what we are doing to improve diagnostics for Ohio ornamental producers!

First paper of 2019! Let’s think more about pathogens of reservoir, weedy hosts.

Our first paper of 2019 titled “A Pathovar of Xanthomonas oryzae Infecting Wild Grasses Provides Insight Into the Evolution of Pathogenicity in Rice Agroecosystems” was published in Frontiers in Plant Science. Our colleagues in CO (Lang et al.) from the Leach lab led the effort and explored the biology of X. oryzae of weedy hosts that are closely related to important rice pathogens.


Welcome to the Jacobs lab! After finally creating a website, we hope to keep you up to date with what’s going on in Ohio.

The Jacobs lab investigates the biological and evolutionary basis for microbial colonization of plants. The factors that contribute to pathogen evolution for niche-specific behavior remain unclear. Dr. Jacobs’ team focuses on understanding how pathogenic bacteria evolve and adapt to colonize different plant tissues. Their research uses novel, high-throughput technologies to determine the basis of tissue-specific behaviors in and host colonization by plant pathogenic bacteria.


Image: Live imaging of bacterial transcriptional reprogramming of a plant cell