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Expression of the Arabidopsis thaliana immune receptor EFR in Medicago truncatula reduces infection by a root pathogenic bacterium, but not nitrogen-fixing rhizobial symbiosis.

Pfeilmeier S, George J, Morel A, Roy S, Smoker M, Stransfeld L, Downie JA, Peeters N, Malone JG, Zipfel C.

Plant Biotechnol J. 2018 Aug 18. doi: 10.1111/pbi.12999. [Epub ahead of print]


The ash dieback invasion of Europe was founded by two genetically divergent individuals.

McMullan M, Rafiqi M, Kaithakottil G, Clavijo BJ, Bilham L, Orton E, Percival-Alwyn L, Ward BJ, Edwards A, Saunders DGO, Garcia Accinelli G, Wright J, Verweij W, Koutsovoulos G, Yoshida K, Hosoya T, Williamson L, Jennings P, Ioos R, Husson C, Hietala AM, Vivian-Smith A, Solheim H, MaClean D, Fosker C, Hall N, Brown JKM, Swarbreck D, Blaxter M, Downie JA, Clark MD.

Nat Ecol Evol. 2018 Jun;2(6):1000-1008. doi: 10.1038/s41559-018-0548-9. Epub 2018 Apr 23.


Ash dieback epidemic in Europe: How can molecular technologies help?

Downie JA.

PLoS Pathog. 2017 Jul 20;13(7):e1006381. doi: 10.1371/journal.ppat.1006381. eCollection 2017 Jul. Review. No abstract available.


The ERN1 transcription factor gene is a target of the CCaMK/CYCLOPS complex and controls rhizobial infection in Lotus japonicus.

Cerri MR, Wang Q, Stolz P, Folgmann J, Frances L, Katzer K, Li X, Heckmann AB, Wang TL, Downie JA, Klingl A, de Carvalho-Niebel F, Xie F, Parniske M.

New Phytol. 2017 Jul;215(1):323-337. doi: 10.1111/nph.14547. Epub 2017 May 15.


Bacterial Biosensors for in Vivo Spatiotemporal Mapping of Root Secretion.

Pini F, East AK, Appia-Ayme C, Tomek J, Karunakaran R, Mendoza-Suárez M, Edwards A, Terpolilli JJ, Roworth J, Downie JA, Poole PS.

Plant Physiol. 2017 Jul;174(3):1289-1306. doi: 10.1104/pp.16.01302. Epub 2017 May 11.


Manganese transport is essential for N2 -fixation by Rhizobium leguminosarum in bacteroids from galegoid but not phaseoloid nodules.

Hood G, Ramachandran V, East AK, Downie JA, Poole PS.

Environ Microbiol. 2017 Jul;19(7):2715-2726. doi: 10.1111/1462-2920.13773. Epub 2017 May 30.


Morphotype of bacteroids in different legumes correlates with the number and type of symbiotic NCR peptides.

Montiel J, Downie JA, Farkas A, Bihari P, Herczeg R, Bálint B, Mergaert P, Kereszt A, Kondorosi É.

Proc Natl Acad Sci U S A. 2017 May 9;114(19):5041-5046. doi: 10.1073/pnas.1704217114. Epub 2017 Apr 24.


MtLAX2, a Functional Homologue of the Arabidopsis Auxin Influx Transporter AUX1, Is Required for Nodule Organogenesis.

Roy S, Robson F, Lilley J, Liu CW, Cheng X, Wen J, Walker S, Sun J, Cousins D, Bone C, Bennett MJ, Downie JA, Swarup R, Oldroyd G, Murray JD.

Plant Physiol. 2017 May;174(1):326-338. doi: 10.1104/pp.16.01473. Epub 2017 Mar 31.


Dengue Fever-Associated Maculopathy and Panuveitis in Australia.

Ooi KG, Inglis H, Paramanathan N, Downie JA, Hennessy MP.

Case Rep Ophthalmol Med. 2016;2016:5704695. doi: 10.1155/2016/5704695. Epub 2016 Dec 19.


Genome sequence and genetic diversity of European ash trees.

Sollars ES, Harper AL, Kelly LJ, Sambles CM, Ramirez-Gonzalez RH, Swarbreck D, Kaithakottil G, Cooper ED, Uauy C, Havlickova L, Worswick G, Studholme DJ, Zohren J, Salmon DL, Clavijo BJ, Li Y, He Z, Fellgett A, McKinney LV, Nielsen LR, Douglas GC, Kjær ED, Downie JA, Boshier D, Lee S, Clark J, Grant M, Bancroft I, Caccamo M, Buggs RJ.

Nature. 2017 Jan 12;541(7636):212-216. doi: 10.1038/nature20786. Epub 2016 Dec 26.


Molecular markers for tolerance of European ash (Fraxinus excelsior) to dieback disease identified using Associative Transcriptomics.

Harper AL, McKinney LV, Nielsen LR, Havlickova L, Li Y, Trick M, Fraser F, Wang L, Fellgett A, Sollars ES, Janacek SH, Downie JA, Buggs RJ, Kjær ED, Bancroft I.

Sci Rep. 2016 Jan 13;6:19335. doi: 10.1038/srep19335.


SCARN a Novel Class of SCAR Protein That Is Required for Root-Hair Infection during Legume Nodulation.

Qiu L, Lin JS, Xu J, Sato S, Parniske M, Wang TL, Downie JA, Xie F.

PLoS Genet. 2015 Oct 30;11(10):e1005623. doi: 10.1371/journal.pgen.1005623. eCollection 2015 Oct.


MgtE From Rhizobium leguminosarum Is a Mg²⁺ Channel Essential for Growth at Low pH and N2 Fixation on Specific Plants.

Hood G, Karunakaran R, Downie JA, Poole P.

Mol Plant Microbe Interact. 2015 Dec;28(12):1281-7. doi: 10.1094/MPMI-07-15-0166-R. Epub 2015 Nov 25.


Lessons from Fraxinus, a crowd-sourced citizen science game in genomics.

Rallapalli G; Fraxinus Players, Saunders DG, Yoshida K, Edwards A, Lugo CA, Collin S, Clavijo B, Corpas M, Swarbreck D, Clark M, Downie JA, Kamoun S; Team Cooper, MacLean D.

Elife. 2015 Jul 29;4:e07460. doi: 10.7554/eLife.07460.


Arabinose and protocatechuate catabolism genes are important for growth of Rhizobium leguminosarum biovar viciae in the pea rhizosphere.

Garcia-Fraile P, Seaman JC, Karunakaran R, Edwards A, Poole PS, Downie JA.

Plant Soil. 2015;390(1-2):251-264. Epub 2015 Jan 30.


Plant cysteine-rich peptides that inhibit pathogen growth and control rhizobial differentiation in legume nodules.

Maróti G, Downie JA, Kondorosi É.

Curr Opin Plant Biol. 2015 Aug;26:57-63. doi: 10.1016/j.pbi.2015.05.031. Epub 2015 Jun 25. Review.


Bacterial-induced calcium oscillations are common to nitrogen-fixing associations of nodulating legumes and nonlegumes.

Granqvist E, Sun J, Op den Camp R, Pujic P, Hill L, Normand P, Morris RJ, Downie JA, Geurts R, Oldroyd GE.

New Phytol. 2015 Aug;207(3):551-8. doi: 10.1111/nph.13464. Epub 2015 May 26.


The root hair "infectome" of Medicago truncatula uncovers changes in cell cycle genes and reveals a requirement for Auxin signaling in rhizobial infection.

Breakspear A, Liu C, Roy S, Stacey N, Rogers C, Trick M, Morieri G, Mysore KS, Wen J, Oldroyd GE, Downie JA, Murray JD.

Plant Cell. 2014 Dec;26(12):4680-701. doi: 10.1105/tpc.114.133496. Epub 2014 Dec 19.


Lipopolysaccharide O-chain core region required for cellular cohesion and compaction of in vitro and root biofilms developed by Rhizobium leguminosarum.

Russo DM, Abdian PL, Posadas DM, Williams A, Vozza N, Giordano W, Kannenberg E, Downie JA, Zorreguieta A.

Appl Environ Microbiol. 2015 Feb;81(3):1013-23. doi: 10.1128/AEM.03175-14. Epub 2014 Nov 21.


Calcium signals in plant immunity: a spiky issue.

Downie JA.

New Phytol. 2014 Dec;204(4):733-5. doi: 10.1111/nph.13119. No abstract available.


Mutation of praR in Rhizobium leguminosarum enhances root biofilms, improving nodulation competitiveness by increased expression of attachment proteins.

Frederix M, Edwards A, Swiderska A, Stanger A, Karunakaran R, Williams A, Abbruscato P, Sanchez-Contreras M, Poole PS, Downie JA.

Mol Microbiol. 2014 Aug;93(3):464-78. doi: 10.1111/mmi.12670. Epub 2014 Jul 2.


A H+-ATPase That Energizes Nutrient Uptake during Mycorrhizal Symbioses in Rice and Medicago truncatula.

Wang E, Yu N, Bano SA, Liu C, Miller AJ, Cousins D, Zhang X, Ratet P, Tadege M, Mysore KS, Downie JA, Murray JD, Oldroyd GE, Schultze M.

Plant Cell. 2014 Apr;26(4):1818-1830. Epub 2014 Apr 29.


Legume nodulation.

Downie JA.

Curr Biol. 2014 Mar 3;24(5):R184-90. doi: 10.1016/j.cub.2014.01.028. No abstract available.


Host-specific Nod-factors associated with Medicago truncatula nodule infection differentially induce calcium influx and calcium spiking in root hairs.

Morieri G, Martinez EA, Jarynowski A, Driguez H, Morris R, Oldroyd GE, Downie JA.

New Phytol. 2013 Nov;200(3):656-62. doi: 10.1111/nph.12475. Epub 2013 Sep 10.


Rhizobial and mycorrhizal symbioses in Lotus japonicus require lectin nucleotide phosphohydrolase, which acts upstream of calcium signaling.

Roberts NJ, Morieri G, Kalsi G, Rose A, Stiller J, Edwards A, Xie F, Gresshoff PM, Oldroyd GE, Downie JA, Etzler ME.

Plant Physiol. 2013 Jan;161(1):556-67. doi: 10.1104/pp.112.206110. Epub 2012 Nov 7.


Buffering capacity explains signal variation in symbiotic calcium oscillations.

Granqvist E, Wysham D, Hazledine S, Kozlowski W, Sun J, Charpentier M, Martins TV, Haleux P, Tsaneva-Atanasova K, Downie JA, Oldroyd GE, Morris RJ.

Plant Physiol. 2012 Dec;160(4):2300-10. doi: 10.1104/pp.112.205682. Epub 2012 Oct 1.


The PTS(Ntr) system globally regulates ATP-dependent transporters in Rhizobium leguminosarum.

Prell J, Mulley G, Haufe F, White JP, Williams A, Karunakaran R, Downie JA, Poole PS.

Mol Microbiol. 2012 Apr;84(1):117-29. doi: 10.1111/j.1365-2958.2012.08014.x. Epub 2012 Mar 2.


Legume pectate lyase required for root infection by rhizobia.

Xie F, Murray JD, Kim J, Heckmann AB, Edwards A, Oldroyd GE, Downie JA.

Proc Natl Acad Sci U S A. 2012 Jan 10;109(2):633-8. doi: 10.1073/pnas.1113992109. Epub 2011 Dec 27.


Adaptation of Rhizobium leguminosarum to pea, alfalfa and sugar beet rhizospheres investigated by comparative transcriptomics.

Ramachandran VK, East AK, Karunakaran R, Downie JA, Poole PS.

Genome Biol. 2011 Oct 21;12(10):R106. doi: 10.1186/gb-2011-12-10-r106.


Natural variation in host-specific nodulation of pea is associated with a haplotype of the SYM37 LysM-type receptor-like kinase.

Li R, Knox MR, Edwards A, Hogg B, Ellis TH, Wei G, Downie JA.

Mol Plant Microbe Interact. 2011 Nov;24(11):1396-403. doi: 10.1094/MPMI-01-11-0004.


A eulogy to Adam Kondorosi.

Downie JA.

Mol Plant Microbe Interact. 2011 Nov;24(11):1272-5. doi: 10.1094/MPMI-06-11-0148. No abstract available.


A plant arabinogalactan-like glycoprotein promotes a novel type of polar surface attachment by Rhizobium leguminosarum.

Xie F, Williams A, Edwards A, Downie JA.

Mol Plant Microbe Interact. 2012 Feb;25(2):250-8. doi: 10.1094/MPMI-08-11-0211.


The superoxide dismutase SodA is targeted to the periplasm in a SecA-dependent manner by a novel mechanism.

Krehenbrink M, Edwards A, Downie JA.

Mol Microbiol. 2011 Oct;82(1):164-79. doi: 10.1111/j.1365-2958.2011.07803.x. Epub 2011 Sep 8.


The rules of engagement in the legume-rhizobial symbiosis.

Oldroyd GE, Murray JD, Poole PS, Downie JA.

Annu Rev Genet. 2011;45:119-44. doi: 10.1146/annurev-genet-110410-132549. Epub 2011 Aug 11. Review.


Nuclear membranes control symbiotic calcium signaling of legumes.

Capoen W, Sun J, Wysham D, Otegui MS, Venkateshwaran M, Hirsch S, Miwa H, Downie JA, Morris RJ, Ané JM, Oldroyd GE.

Proc Natl Acad Sci U S A. 2011 Aug 23;108(34):14348-53. doi: 10.1073/pnas.1107912108. Epub 2011 Aug 8.


Co-ordination of quorum-sensing regulation in Rhizobium leguminosarum by induction of an anti-repressor.

Frederix M, Edwards A, McAnulla C, Downie JA.

Mol Microbiol. 2011 Aug;81(4):994-1007. doi: 10.1111/j.1365-2958.2011.07738.x. Epub 2011 Jul 6.


Conservation in function of a SCAR/WAVE component during infection thread and root hair growth in Medicago truncatula.

Miyahara A, Richens J, Starker C, Morieri G, Smith L, Long S, Downie JA, Oldroyd GE.

Mol Plant Microbe Interact. 2010 Dec;23(12):1553-62. doi: 10.1094/MPMI-06-10-0144.


The roles of extracellular proteins, polysaccharides and signals in the interactions of rhizobia with legume roots.

Downie JA.

FEMS Microbiol Rev. 2010 Mar;34(2):150-70. doi: 10.1111/j.1574-6976.2009.00205.x. Epub 2009 Dec 15. Review.


LIN, a novel type of U-box/WD40 protein, controls early infection by rhizobia in legumes.

Kiss E, Oláh B, Kaló P, Morales M, Heckmann AB, Borbola A, Lózsa A, Kontár K, Middleton P, Downie JA, Oldroyd GE, Endre G.

Plant Physiol. 2009 Nov;151(3):1239-49. doi: 10.1104/pp.109.143933. Epub 2009 Sep 23.


Nonlinear time series analysis of nodulation factor induced calcium oscillations: evidence for deterministic chaos?

Hazledine S, Sun J, Wysham D, Downie JA, Oldroyd GE, Morris RJ.

PLoS One. 2009 Aug 13;4(8):e6637. doi: 10.1371/journal.pone.0006637.


Ranibizumab treatment for neovascular age-related macular degeneration: from randomized trials to clinical practice.

Michalova K, Wickremasinghe SS, Tan TH, Chang A, Harper CA, Downie JA, Hunyor AP, Guymer RH.

Eye (Lond). 2009 Aug;23(8):1633-40. doi: 10.1038/eye.2009.175. Epub 2009 Jul 31.


Annexins - calcium- and membrane-binding proteins in the plant kingdom: potential role in nodulation and mycorrhization in Medicago truncatula.

Talukdar T, Gorecka KM, de Carvalho-Niebel F, Downie JA, Cullimore J, Pikula S.

Acta Biochim Pol. 2009;56(2):199-210. Epub 2009 May 7. Review.


The cin and rai quorum-sensing regulatory systems in Rhizobium leguminosarum are coordinated by ExpR and CinS, a small regulatory protein coexpressed with CinI.

Edwards A, Frederix M, Wisniewski-Dyé F, Jones J, Zorreguieta A, Downie JA.

J Bacteriol. 2009 May;191(9):3059-67. doi: 10.1128/JB.01650-08. Epub 2009 Mar 6.


GRAS proteins form a DNA binding complex to induce gene expression during nodulation signaling in Medicago truncatula.

Hirsch S, Kim J, Muñoz A, Heckmann AB, Downie JA, Oldroyd GE.

Plant Cell. 2009 Feb;21(2):545-57. doi: 10.1105/tpc.108.064501. Epub 2009 Feb 27.


Rearrangement of actin cytoskeleton mediates invasion of Lotus japonicus roots by Mesorhizobium loti.

Yokota K, Fukai E, Madsen LH, Jurkiewicz A, Rueda P, Radutoiu S, Held M, Hossain MS, Szczyglowski K, Morieri G, Oldroyd GE, Downie JA, Nielsen MW, Rusek AM, Sato S, Tabata S, James EK, Oyaizu H, Sandal N, Stougaard J.

Plant Cell. 2009 Jan;21(1):267-84. doi: 10.1105/tpc.108.063693. Epub 2009 Jan 9.


Characterization of the quaternary amine transporters of Rhizobium leguminosarum bv. viciae 3841.

Fox MA, Karunakaran R, Leonard ME, Mouhsine B, Williams A, East AK, Downie JA, Poole PS.

FEMS Microbiol Lett. 2008 Oct;287(2):212-20. doi: 10.1111/j.1574-6968.2008.01307.x. Epub 2008 Aug 21.


Differential and chaotic calcium signatures in the symbiosis signaling pathway of legumes.

Kosuta S, Hazledine S, Sun J, Miwa H, Morris RJ, Downie JA, Oldroyd GE.

Proc Natl Acad Sci U S A. 2008 Jul 15;105(28):9823-8. doi: 10.1073/pnas.0803499105. Epub 2008 Jul 7.


A common genomic framework for a diverse assembly of plasmids in the symbiotic nitrogen fixing bacteria.

Crossman LC, Castillo-Ramírez S, McAnnula C, Lozano L, Vernikos GS, Acosta JL, Ghazoui ZF, Hernández-González I, Meakin G, Walker AW, Hynes MF, Young JP, Downie JA, Romero D, Johnston AW, Dávila G, Parkhill J, González V.

PLoS One. 2008 Jul 2;3(7):e2567. doi: 10.1371/journal.pone.0002567. Erratum in: PLoS ONE. 2008;3(8). doi: 10.1371/annotation/8d8e2649-c772-4363-b70b-b242c42f505f. PLoS ONE. 2008;3(8). doi: 10.1371/annotation/4a58a9bd-7531-41d0-b101-53039a88c25b.


Coordinating nodule morphogenesis with rhizobial infection in legumes.

Oldroyd GE, Downie JA.

Annu Rev Plant Biol. 2008;59:519-46. doi: 10.1146/annurev.arplant.59.032607.092839. Review.


Glucomannan-mediated attachment of Rhizobium leguminosarum to pea root hairs is required for competitive nodule infection.

Williams A, Wilkinson A, Krehenbrink M, Russo DM, Zorreguieta A, Downie JA.

J Bacteriol. 2008 Jul;190(13):4706-15. doi: 10.1128/JB.01694-07. Epub 2008 Apr 25.

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