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A sterile hydroponic system for characterising root exudates from specific root types and whole-root systems of large crop plants.

Kawasaki A, Okada S, Zhang C, Delhaize E, Mathesius U, Richardson AE, Watt M, Gilliham M, Ryan PR.

Plant Methods. 2018 Dec 20;14:114. doi: 10.1186/s13007-018-0380-x. eCollection 2018.


Assessing How the Aluminum-Resistance Traits in Wheat and Rye Transfer to Hexaploid and Octoploid Triticale.

Ryan PR, Dong D, Teuber F, Wendler N, Mühling KH, Liu J, Xu M, Salvador Moreno N, You J, Maurer HP, Horst WJ, Delhaize E.

Front Plant Sci. 2018 Oct 15;9:1334. doi: 10.3389/fpls.2018.01334. eCollection 2018.


Elevated CO2 (free-air CO2 enrichment) increases grain yield of aluminium-resistant but not aluminium-sensitive wheat (Triticum aestivum) grown in an acid soil.

Dong J, Grylls S, Hunt J, Armstrong R, Delhaize E, Tang C.

Ann Bot. 2019 Feb 15;123(3):461-468. doi: 10.1093/aob/mcy171.


Altered Expression of the Malate-Permeable Anion Channel OsALMT4 Reduces the Growth of Rice Under Low Radiance.

Liu J, Xu M, Estavillo GM, Delhaize E, White RG, Zhou M, Ryan PR.

Front Plant Sci. 2018 May 3;9:542. doi: 10.3389/fpls.2018.00542. eCollection 2018.


Do longer root hairs improve phosphorus uptake? Testing the hypothesis with transgenic Brachypodium distachyon lines overexpressing endogenous RSL genes.

Zhang C, Simpson RJ, Kim CM, Warthmann N, Delhaize E, Dolan L, Byrne ME, Wu Y, Ryan PR.

New Phytol. 2018 Mar;217(4):1654-1666. doi: 10.1111/nph.14980. Epub 2018 Jan 17.


Altered Expression of a Malate-Permeable Anion Channel, OsALMT4, Disrupts Mineral Nutrition.

Liu J, Zhou M, Delhaize E, Ryan PR.

Plant Physiol. 2017 Dec;175(4):1745-1759. doi: 10.1104/pp.17.01142. Epub 2017 Nov 3.


Root hairs enable high transpiration rates in drying soils.

Carminati A, Passioura JB, Zarebanadkouki M, Ahmed MA, Ryan PR, Watt M, Delhaize E.

New Phytol. 2017 Nov;216(3):771-781. doi: 10.1111/nph.14715. Epub 2017 Jul 31.


Analysis of aneuploid lines of bread wheat to map chromosomal locations of genes controlling root hair length.

Liu M, Rathjen T, Weligama K, Forrest K, Hayden M, Delhaize E.

Ann Bot. 2017 Jun 1;119(8):1333-1341. doi: 10.1093/aob/mcx030.


Improving phosphorus use efficiency: a complex trait with emerging opportunities.

Heuer S, Gaxiola R, Schilling R, Herrera-Estrella L, López-Arredondo D, Wissuwa M, Delhaize E, Rouached H.

Plant J. 2017 Jun;90(5):868-885. doi: 10.1111/tpj.13423. Epub 2017 Feb 3. Review.


Rhizosheaths on wheat grown in acid soils: phosphorus acquisition efficiency and genetic control.

James RA, Weligama C, Verbyla K, Ryan PR, Rebetzke GJ, Rattey A, Richardson AE, Delhaize E.

J Exp Bot. 2016 Jun;67(12):3709-18. doi: 10.1093/jxb/erw035. Epub 2016 Feb 11.


Introgression of genes from bread wheat enhances the aluminium tolerance of durum wheat.

Han C, Zhang P, Ryan PR, Rathjen TM, Yan Z, Delhaize E.

Theor Appl Genet. 2016 Apr;129(4):729-739. doi: 10.1007/s00122-015-2661-3. Epub 2016 Jan 8.


Early vigour improves phosphate uptake in wheat.

Ryan PR, Liao M, Delhaize E, Rebetzke GJ, Weligama C, Spielmeyer W, James RA.

J Exp Bot. 2015 Dec;66(22):7089-100. doi: 10.1093/jxb/erv403. Epub 2015 Aug 28.


The genetics of rhizosheath size in a multiparent mapping population of wheat.

Delhaize E, Rathjen TM, Cavanagh CR.

J Exp Bot. 2015 Aug;66(15):4527-36. doi: 10.1093/jxb/erv223. Epub 2015 May 11.


The barley anion channel, HvALMT1, has multiple roles in guard cell physiology and grain metabolism.

Xu M, Gruber BD, Delhaize E, White RG, James RA, You J, Yang Z, Ryan PR.

Physiol Plant. 2015 Jan;153(1):183-93. doi: 10.1111/ppl.12234. Epub 2014 Jul 4.


Introgression of a 4D chromosomal fragment into durum wheat confers aluminium tolerance.

Han C, Ryan PR, Yan Z, Delhaize E.

Ann Bot. 2014 Jul;114(1):135-44. doi: 10.1093/aob/mcu070. Epub 2014 Apr 15.


Enhancing the aluminium tolerance of barley by expressing the citrate transporter genes SbMATE and FRD3.

Zhou G, Pereira JF, Delhaize E, Zhou M, Magalhaes JV, Ryan PR.

J Exp Bot. 2014 Jun;65(9):2381-90. doi: 10.1093/jxb/eru121. Epub 2014 Apr 1.


Can citrate efflux from roots improve phosphorus uptake by plants? Testing the hypothesis with near-isogenic lines of wheat.

Ryan PR, James RA, Weligama C, Delhaize E, Rattey A, Lewis DC, Bovill WD, McDonald G, Rathjen TM, Wang E, Fettell NA, Richardson AE.

Physiol Plant. 2014 Jul;151(3):230-42. doi: 10.1111/ppl.12150. Epub 2014 Feb 24.


The barley MATE gene, HvAACT1, increases citrate efflux and Al(3+) tolerance when expressed in wheat and barley.

Zhou G, Delhaize E, Zhou M, Ryan PR.

Ann Bot. 2013 Aug;112(3):603-12. doi: 10.1093/aob/mct135. Epub 2013 Jun 24.


Using membrane transporters to improve crops for sustainable food production.

Schroeder JI, Delhaize E, Frommer WB, Guerinot ML, Harrison MJ, Herrera-Estrella L, Horie T, Kochian LV, Munns R, Nishizawa NK, Tsay YF, Sanders D.

Nature. 2013 May 2;497(7447):60-6. doi: 10.1038/nature11909.


Transposon-mediated alteration of TaMATE1B expression in wheat confers constitutive citrate efflux from root apices.

Tovkach A, Ryan PR, Richardson AE, Lewis DC, Rathjen TM, Ramesh S, Tyerman SD, Delhaize E.

Plant Physiol. 2013 Feb;161(2):880-92. doi: 10.1104/pp.112.207142. Epub 2012 Nov 30.


Aluminium tolerance of root hairs underlies genotypic differences in rhizosheath size of wheat (Triticum aestivum) grown on acid soil.

Delhaize E, James RA, Ryan PR.

New Phytol. 2012 Aug;195(3):609-19. doi: 10.1111/j.1469-8137.2012.04183.x. Epub 2012 May 29.


Transcriptional regulation of aluminium tolerance genes.

Delhaize E, Ma JF, Ryan PR.

Trends Plant Sci. 2012 Jun;17(6):341-8. doi: 10.1016/j.tplants.2012.02.008. Epub 2012 Mar 27. Review.


Genome-wide association analyses of common wheat (Triticum aestivum L.) germplasm identifies multiple loci for aluminium resistance.

Raman H, Stodart B, Ryan PR, Delhaize E, Emebiri L, Raman R, Coombes N, Milgate A.

Genome. 2010 Nov;53(11):957-66. doi: 10.1139/G10-058.


The identification of aluminium-resistance genes provides opportunities for enhancing crop production on acid soils.

Ryan PR, Tyerman SD, Sasaki T, Furuichi T, Yamamoto Y, Zhang WH, Delhaize E.

J Exp Bot. 2011 Jan;62(1):9-20. doi: 10.1093/jxb/erq272. Epub 2010 Sep 16. Review.


The multiple origins of aluminium resistance in hexaploid wheat include Aegilops tauschii and more recent cis mutations to TaALMT1.

Ryan PR, Raman H, Gupta S, Sasaki T, Yamamoto Y, Delhaize E.

Plant J. 2010 Nov;64(3):446-55. doi: 10.1111/j.1365-313X.2010.04338.x. Epub 2010 Oct 12.


An extracellular hydrophilic carboxy-terminal domain regulates the activity of TaALMT1, the aluminum-activated malate transport protein of wheat.

Furuichi T, Sasaki T, Tsuchiya Y, Ryan PR, Delhaize E, Yamamoto Y.

Plant J. 2010 Oct;64(1):47-55. doi: 10.1111/j.1365-313X.2010.04309.x. Epub 2010 Aug 31.


Engineering greater aluminium resistance in wheat by over-expressing TaALMT1.

Pereira JF, Zhou G, Delhaize E, Richardson T, Zhou M, Ryan PR.

Ann Bot. 2010 Jul;106(1):205-14. doi: 10.1093/aob/mcq058. Epub 2010 Mar 25.


HvALMT1 from barley is involved in the transport of organic anions.

Gruber BD, Ryan PR, Richardson AE, Tyerman SD, Ramesh S, Hebb DM, Howitt SM, Delhaize E.

J Exp Bot. 2010 Mar;61(5):1455-67. doi: 10.1093/jxb/erq023. Epub 2010 Feb 22.


Transgenic barley (Hordeum vulgare L.) expressing the wheat aluminium resistance gene (TaALMT1) shows enhanced phosphorus nutrition and grain production when grown on an acid soil.

Delhaize E, Taylor P, Hocking PJ, Simpson RJ, Ryan PR, Richardson AE.

Plant Biotechnol J. 2009 Jun;7(5):391-400. doi: 10.1111/j.1467-7652.2009.00403.x.


A second mechanism for aluminum resistance in wheat relies on the constitutive efflux of citrate from roots.

Ryan PR, Raman H, Gupta S, Horst WJ, Delhaize E.

Plant Physiol. 2009 Jan;149(1):340-51. doi: 10.1104/pp.108.129155. Epub 2008 Nov 12.


Analysis of TaALMT1 traces the transmission of aluminum resistance in cultivated common wheat (Triticum aestivum L.).

Raman H, Ryan PR, Raman R, Stodart BJ, Zhang K, Martin P, Wood R, Sasaki T, Yamamoto Y, Mackay M, Hebb DM, Delhaize E.

Theor Appl Genet. 2008 Feb;116(3):343-54. Epub 2007 Nov 29.


The Membrane Topology of ALMT1, an Aluminum-Activated Malate Transport Protein in Wheat (Triticum aestivum).

Motoda H, Sasaki T, Kano Y, Ryan PR, Delhaize E, Matsumoto H, Yamamoto Y.

Plant Signal Behav. 2007 Nov;2(6):467-72.


A higher plant delta8 sphingolipid desaturase with a preference for (Z)-isomer formation confers aluminum tolerance to yeast and plants.

Ryan PR, Liu Q, Sperling P, Dong B, Franke S, Delhaize E.

Plant Physiol. 2007 Aug;144(4):1968-77. Epub 2007 Jun 28.


A role for the AtMTP11 gene of Arabidopsis in manganese transport and tolerance.

Delhaize E, Gruber BD, Pittman JK, White RG, Leung H, Miao Y, Jiang L, Ryan PR, Richardson AE.

Plant J. 2007 Jul;51(2):198-210. Epub 2007 Jun 8.


High-resolution mapping of the Alp locus and identification of a candidate gene HvMATE controlling aluminium tolerance in barley (Hordeum vulgare L.).

Wang J, Raman H, Zhou M, Ryan PR, Delhaize E, Hebb DM, Coombes N, Mendham N.

Theor Appl Genet. 2007 Jul;115(2):265-76. Epub 2007 Jun 6.


The roles of organic anion permeases in aluminium resistance and mineral nutrition.

Delhaize E, Gruber BD, Ryan PR.

FEBS Lett. 2007 May 25;581(12):2255-62. Epub 2007 Mar 30. Review.


Sequence upstream of the wheat (Triticum aestivum L.) ALMT1 gene and its relationship to aluminum resistance.

Sasaki T, Ryan PR, Delhaize E, Hebb DM, Ogihara Y, Kawaura K, Noda K, Kojima T, Toyoda A, Matsumoto H, Yamamoto Y.

Plant Cell Physiol. 2006 Oct;47(10):1343-54. Epub 2006 Aug 23.


AtALMT1, which encodes a malate transporter, is identified as one of several genes critical for aluminum tolerance in Arabidopsis.

Hoekenga OA, Maron LG, Piñeros MA, Cançado GM, Shaff J, Kobayashi Y, Ryan PR, Dong B, Delhaize E, Sasaki T, Matsumoto H, Yamamoto Y, Koyama H, Kochian LV.

Proc Natl Acad Sci U S A. 2006 Jun 20;103(25):9738-43. Epub 2006 Jun 1.


Molecular characterization and mapping of ALMT1, the aluminium-tolerance gene of bread wheat (Triticum aestivum L.).

Raman H, Zhang K, Cakir M, Appels R, Garvin DF, Maron LG, Kochian LV, Moroni JS, Raman R, Imtiaz M, Drake-Brockman F, Waters I, Martin P, Sasaki T, Yamamoto Y, Matsumoto H, Hebb DM, Delhaize E, Ryan PR.

Genome. 2005 Oct;48(5):781-91.


Promoter analysis of the barley Pht1;1 phosphate transporter gene identifies regions controlling root expression and responsiveness to phosphate deprivation.

Schünmann PH, Richardson AE, Vickers CE, Delhaize E.

Plant Physiol. 2004 Dec;136(4):4205-14. Epub 2004 Nov 12.


Engineering high-level aluminum tolerance in barley with the ALMT1 gene.

Delhaize E, Ryan PR, Hebb DM, Yamamoto Y, Sasaki T, Matsumoto H.

Proc Natl Acad Sci U S A. 2004 Oct 19;101(42):15249-54. Epub 2004 Oct 7.


Characterization of promoter expression patterns derived from the Pht1 phosphate transporter genes of barley (Hordeum vulgare L.).

Schünmann PH, Richardson AE, Smith FW, Delhaize E.

J Exp Bot. 2004 Apr;55(398):855-65. Epub 2004 Mar 12.


A wheat gene encoding an aluminum-activated malate transporter.

Sasaki T, Yamamoto Y, Ezaki B, Katsuhara M, Ahn SJ, Ryan PR, Delhaize E, Matsumoto H.

Plant J. 2004 Mar;37(5):645-53.


Genes encoding proteins of the cation diffusion facilitator family that confer manganese tolerance.

Delhaize E, Kataoka T, Hebb DM, White RG, Ryan PR.

Plant Cell. 2003 May;15(5):1131-42.


Aluminium tolerance in plants and the complexing role of organic acids.

Ma JF, Ryan PR, Delhaize E.

Trends Plant Sci. 2001 Jun;6(6):273-8.



Ryan P, Delhaize E, Jones D.

Annu Rev Plant Physiol Plant Mol Biol. 2001 Jun;52:527-560.


Aluminum activates an anion channel in the apical cells of wheat roots.

Ryan PR, Skerrett M, Findlay GP, Delhaize E, Tyerman SD.

Proc Natl Acad Sci U S A. 1997 Jun 10;94(12):6547-52.

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