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Sainsbury Laboratory

Research Interests

My research focuses on understanding and engineering the molecular mechanisms influencing plant and microbe associations in rhizosphere to enhance crop production in future agroecosystems.

Communications between plant and the rhizosphere microbiota plays an important role in determining the rhizomicrobiome, thereby influencing the plant productivity. Currently, I am utilizing the tools available in plant and microbial synthetic biology to engineer synthetic trans-Kingdom signal communications between plant and microbes in rhizosphere comparable to the signalling in the Legume-Rhizobium symbiosis and establish synthetic symbioses for enhanced nitrogen provision to cereals.


Key Publications

Barney Geddes, Ponraj Paramasivan, Amelie Joffrin, Amber Thompson, Kirsten Christensen, Beatriz Jorrin, Paul Brett, Stuart Conway, Giles Oldroyd, and Philip Poole. (2019) Engineering transkingdom signalling in plants to control gene expression in rhizosphere bacteria. Nature Communications. DOI: 10.1038/s41467-019-10882-x

Mus F, Crook M.B, Garcia Costas A, Geddes B.A, Kouri E.D, Paramasivan P, Ryu MH, Olroyd G.E, Poole P.S, Udvardi M.K, Voigt C.A, Ane J.M, Peters J.W (2016) Symbiotic Nitrogen Fixation and the Challenges to its Extension to Non-legumes. Appl. Environ. Microbiol. 82: 3698-3710.

Ponraj P, Shankar M, Ilakkiam D, Rajendhran J, Gunasekaran P (2013) Influence of periplasmic oxidation of glucose on pyoverdine synthesis in Pseudomonas putida S11. Appl. Microbiol. Biotechnol. 97: 5027-5041.

Ponraj P, Shankar M, Ilakkiam D, Gunasekaran P (2012) Influence of siderophore pyoverdine synthesis and iron-uptake on abiotic and biotic surface colonization of Pseudomonas putida S11. Biometals 25: 1113-1128.

Research Associate
Dr Ponraj  Paramasivan

Contact Details

Sainsbury Laboratory
University of Cambridge
47 Bateman Street
Cambridge CB2 1LR