Dr Jacob Malone

Project Leader
Molecular Microbiology

My lab uses a combination of genetics, molecular microbiology and biochemistry to address the molecular mechanisms underlying bacterial signal transduction during responses to the environment. The commensal soil bacterium Pseudomonas fluorescens is a prominent biocontrol species that forms non-specific, beneficial relationships with plants and suppresses fungal growth. Pseudomonas syringae on the other hand is an aggressive plant pathogen. 

Recent work from our laboratory and others has identified an important role for the ubiquitous bacterial second messenger cyclic-di-GMP in the control of P. fluorescens root colonisation and P. syringae plant infection. Cyclic-di-GMP is found in almost every bacterial species on Earth, and is a critical component of the intracellular signalling machinery that controls bacterial behaviour. My group are currently working to functionally characterise the cyclic-di-GMP pathways that operate during Pseudomonas interactions with plants, with the overall aim of constructing integrated molecular models for cyclic-di-GMP signalling in these important plant-associated species. 

Discovery shows soil dwelling bacteria adapt to richer or poorer conditions in marriage of convenience with plants

read more

John Innes Centre scientists disable infectious bacteria by removing key protein

read more

Wheat choice has lasting effect on soil health & wheat yield

read more

Recent Publications

Campilongo R., Fung R. K. Y., Little R. H., Grenga L., Trampari E., Pepe S., Chandra G., Stevenson C. E. M., Roncarati D., Malone J. G. (2017)

One ligand, two regulators and three binding sites: How KDPG controls primary carbon metabolism in Pseudomonas.

PLoS Genetics 13 pe1006839

Publisher’s version: 10.1371/journal.pgen.1006839

Grenga L., Little R. H., Malone J. (2017)

Quick Change - post-transcriptional regulation in Pseudomonas.

FEMS Microbiology Letters n/a pn/a

Publisher’s version: 10.1093/femsle/fnx125

Mauchline T. H., Malone J. G. (2017)

Life in earth - the root microbiome to the rescue?

Current Opinion in Microbiology 37 p23-28

Publisher’s version: 10.1016/j.mib.2017.03.005

Kirkpatrick C. L., Lesouhaitier O., Malone J. G., An S. Q., Caly D. L. (2017)

Interaction and signalling networks: a report from the fourth 'Young Microbiologists Symposium on Microbe Signalling, Organisation and Pathogenesis'.

Microbiology (Reading, England) 163 p4-8

Publisher’s version: 10.1099/mic.0.000401

Nguyen D. D., Melnik A. V., Koyama N., Lu X., Schorn M., Fang J., Aguinaldo K., Lincecum T. L., Ghequire M. G., Carrion V. J., Cheng T. L., Duggan B. M., Malone J. G., Mauchline T. H., Sanchez L. M., Kilpatrick A. M., Raaijmakers J. M., Mot R., Moore B. S., Medema M. H., Dorrestein P. C. (2016)

Indexing the Pseudomonas specialized metabolome enabled the discovery of poaeamide B and the bananamides.

Nature microbiology 2 p16197

Publisher’s version: 10.1038/nmicrobiol.2016.197

View All

Jacob Malone

  • Dr Richard Little Research Assistant
  • Eleftheria Trampari Postgraduate Student
  • Dr Rosaria Campilongo Visiting Worker
  • Dr Lucia Grenga Visiting Worker
  • Kieran Rustage Undergraduate Project Student


For media enquiries, please contact the JIC communications team 01603 450962, jic.communications@jic.ac.uk

Expertise: Bacterial signalling, plant growth-promoting bacteria, biocontrol

JIC Cookie Policy. We use cookies on this site to enhance your user experience. By clicking any link on this page you are giving your consent for us to set cookies. You can find out more about the cookies by clicking here.

Accept cookies