My Group studies the role of post-transcriptional adenosine methylation in mRNA. N6-methyladenosine (m6A) is a ubiquitous modification present in the messenger RNA of many eukaryotes and nuclear-replicating viruses. Unlike cap methylation, it can be found throughout the message and has been detected in coding, non-coding and intron sequences. However, despite its widespread occurrence, its function has remained a mystery since its discovery over 30 years ago. This modification is common in most eukaryotes and in plants it appears to be essential. Adenosines in the sequence context GAC or AAC can become methylated, but the average frequency of methylated adenosine is only once per 500 nucleotides. However, not all mRNAs contain the modification, indicating that additional features must be required for specificity. We have recently shown that m6A levels in Arabidopsis mRNA vary between different plant tissues. In addition, MTA, the Arabidopsis homologue of the human mRNA methylase, is required for embryo development and interacts in vitro and in vivo with AtFIP37, a plant homologue of the Drosophila protein female lethal 2 D and of human WILMS' TUMOUR 1-ASSOCIATING PROTEIN.
Previously I held a BBSRC Sir David Philips Research Fellowship which supported my research concerning the role of "quorum sensing" during interactions between plants and various gram negative bacteria. Some work in this area continues within the Group.
M. R. Broadley, MR., White, PJ., Hammond, JP., Graham, NS., Bowen, HC., Emmerson, ZF., Fray, RG., Iannetta, PPM., McNicol, JW. and May, ST. (2008) Evidence of neutral transcriptome evolution in plants. New Phytologist 180 in press and on line http://www3.interscience.wiley.com/cgi-bin/fulltext/121411358/PDFSTART 10.1111/j.1469-8137.2008.02640.x(2008).
Zhong, S., Li, H., Bodi, Z., Button, J., Vespa, L., Herzog, M., Fray, R.G. (2008) MTA is an Arabidopsis messenger RNA adenosine methylase and interacts with a homolog of a sex-specific splicing factor. Plant Cell 20: 1278-1288 available on line http://www.plantcell.org/cgi/content/short/tpc.108.058883?keytype=ref&ijkey=tIrXWY7QkOJHRDz. Zhong, S., Lin, Z., Fray, RG., Grierson, D., (2007) Improved Gateway Vectors for Fluorescent Protein Tagging. Transgenic Research. Accepted and available on line http://dx.doi.org/10.1007/s11248-008-9199-y
Jaffé , B., Kovács, K., Andras, C., Bódi, Z., Liu, Z., Fray R.G. (2008) Methylation of chloroplast DNA does not affect viability and maternal inheritance in tobacco and may provide a strategy towards transgene containment. Plant Cell Reports 27 1377-1384.
Barriuso, J., Solano, B.R., Fray, R.G., Camara, M., Hartmann, A., Manero, F.J.G. (2008) Transgenic tomato plants alter quorum sensing in plant growth-promoting rhizobacteria. Plant Biotechnology Journal 6 442-452.
Fray RG. (2006) Thymus desoxypentose nucleic acid sixty years on. Society for Experimental Biology.
Kovacs K., Zhang L., Linforth RS, Whittaker B., Hayes CJ., Fray R.G. (2007) Redirection of carotenoid metabolism for the efficient production of taxadiene [taxa-4(5),11(12)-diene] in transgenic tomato fruit. Transgenic Research 16 (1): 121-126.
Scott RA., Weil J., Le PT., Williams P., Fray RG., von Bodman SB, Savka MA. (2006) Long- and short-chain plant-produced bacterial N-acyl-homoserine lactones become components of phyllosphere, rhizosphere, and soil. Molecular Plant Microbe Interactions 19 (3): 227-239.
d'Angelo-Picard C., Faure D., Carlier A., Uroz S., Raffoux A., Fray RG., Dessaux Y. (2004) Bacterial populations in the rhizosphere of tobacco plants producing the quorum-sensing signals hexanoyl-homoserine lactone and 3-oxo-hexanoyl-homoserine lactone. FEMS Microbiology Ecology 51 (1): 19-29.
Waters, MT., Fray, RG., Pyke, KA. (2004) Stromule formation is dependent upon plastid size, plastid differentiation status and the density of plastids within the cell. Plant Journal 39 (4): 655-667.
Toth, IK., Newton, JA., Hyman, LJ., Lees, AK., Daykin, M., Ortori, C., Williams, P., Fray, RG. (2004) Potato plants genetically modified to produce N-acylhomoserine lactones increase susceptibility to soft rot erwiniae. Molecular Plant Microbe Interactions 17 880-888
Newton J., Fray, R. (2004) Integration of environmental and host-derived signals with quorum sensing during plant-microbe interactions. Cellular Microbiology 6 (3): 213-227.
Carlier, A., Uroz, S., Smadja, B., Fray, R., Latour, X., Dessaux, Y., Faure, D. (2003) The Ti plasmid of Agrobacterium tumefaciens harbors an attM paralogous gene, aiiB, also encoding N-acyl homoserine lactonase activity. Applied and Environmental Microbiology 69: 4989-4993
Fray, R.G. (2002) Altering plant-microbe interaction through artificially manipulating bacterial quorum sensing. Annals of Botany 89: 245-253.
Hackett, RM., Ho, CW., Lin, ZF., Foote, HCC., Fray, RG., Grierson, D. (2000) Antisense inhibition of the Nr gene restores normal ripening to the tomato Never-ripe mutant, consistent with the ethylene receptor-inhibition model. Plant Physiology 124 (3): 1079-1085.
Fray, RG., Throup, JP., Daykin, M., Wallace, A., Williams, P., Stewart, GSAB., Grierson, D. (1999) Plants genetically modified to produce N-acylhomoserine lactones communicate with bacteria. Nature Biotechnology 17 1017-1020.
Barry, CS.., Blume, B., Hamilton, H., Fray, R., Payton, S., Alpuche-Solis, A., Grierson, D. (1997) Regulation of ethylene synthesis and perception in tomato and its control using gene technology. In: Biology and biotechnology of the plant hormone ethylene. Kluwer Academic Publishers, London.
Fray,RG., Wallace, AD., Fraser, PD., Valero, D., Hedden, P., Bramley, PM., Grierson, D. (1995) Constitutive expression of a fruit phytoene synthase gene in transgenic tomatoes causes dwarfism by redirecting metabolites from the gibberellin pathway. The Plant Journal 8 693-701.
Payton, S., Fray, RG., Brown, S., Grierson, D.. (1995) ethylene receptor expression is regulated during fruit ripening, flower senescence and abscission. Plant Molecular Biology 32 1237-1241.
Fray, RG., Hamilton, AJ., Grierson, D., Davey,MR., Blackhall, NW. (1995) Use of gene silencing to probe carotenoid gene expression in tomato. In: Lycett G.W., Grierson D. and Tucker G. (eds) Mechanisms and applications of gene silencing. Nottingham University press.
Hamilton, AJ., Fray, RG., Grierson D. (1995) Sense and antisense inactivation of fruit ripening genes in tomato. In: Meyer P. (ed) Gene silencing in higher plants and related phenomena in other eukaryotes. Current Topics in Microbiology and Immunology 197: 77-89
Fray, RG., Wallace, AD., Grierson, D., Lycett, GW. (1994) Nucleotide sequence and expression of a ripening and water stress-related cDNA from tomato with homology to the MIP class of membrane channel proteins. Plant Molecular Biology 24 539-543.
Grierson, D., Fray, RG. (1994) Control of ripening in transgenic tomatoes. Euphytica 79 251-263.
Fray, RG., Grierson, D. (1993) Molecular genetics of tomato fruit ripening. Trends in Genetics 9 438-443.
Fray, RG., Grierson, D (1993) Identification and genetic analysis of normal and mutant phytoene synthase genes of tomato by sequencing, complementation and co-suppression. Plant Molecular Biology 22 589-602.
Seymour, GB., Fray, RG., Hill, P., Tucker, GA. (1993) Down-regulation of two non-homologous endogenous tomato genes with a single chimaeric sense gene construct. Plant Molecular Biology 23 1-9.
Grierson, D., Fray, RG., Hamilton, AJ., Smith, CJS., Watson, CF. (1991) Does co-suppression of sense genes in transgenic plants involve antisense RNA? Trends in Biotechnology 9 122-123.
Fray, RG., Lycett, GW., Grierson, D. (1990) Nucleotide sequence of a heat-shock and ripening-related cDNA from tomato. Nucleic Acids Research 18 7148
Zsuzsanna Bodi, James D. Button, Donald Grierson and Rupert G. Fray (2010) Yeast targets for mRNA methylation. Nucleic Acids Research 38(16):5327-5335 http://nar.oxfordjournals.org/cgi/content/full/gkq266?ijkey=mhVT4FN3N7Jzjiv&keytype=ref Katalin Kovács, Philip J. Hill, Donald Grierson, Christine E.R. Dodd, Doru Pamfil, Rupert G. Fray. (2009) Development of a novel inducible bioluminescent and antibiotic resistance tagging system and its use to investigate the role of antibiotic production by Pectobacterium carotovorum ssp. carotovorum during potato tuber infection. European Journal of Plant Pathology 125, Issue 4 (2009), Page 655-664. http://www.springerlink.com/openurl.asp?genre=article&id=doi:10.1007/s10658-009-9513-4 Katalin Kovács, Rupert G. Fray, Yury Tikunov, Neil Graham, Glyn Bradley, Graham B. Seymour, Arnaud G. Bovy and Donald Grierson (2009) Effect of tomato pleiotropic ripening mutations on flavour volatile biosynthesis Phytochemistry 70 1003-1008 http://dx.doi.org/10.1016/j.phytochem.2009.05.014