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Selected Publications for Jon Shaff
  • Maron LG, Pineros MA, Guimaraes CT, Magalhaes JV, Pleiman JK, Mao C, Shaff J, Belicuas SNJ, Kochian L. Two functionally distinct members of the MATE (multi-drug and toxic compound extrusion) family of transporters potentially underlie two major aluminum tolerance QTLs in maize. The Plant Journal (2010) 61, 728–740

  • Shaff, JE, Schultz BA, Craft EJ, Clark RT, Kochian LV (2009) GEOCHEM-EZ: a chemical speciation program with greater power and flexibility. Plant Soil: 330:207-214 10.1007/s11104-009-0193-9[pdf]

  • Liu J, Magalhaes JV, Shaff J, Kochian LV (2009) Aluminum-activated citrate and malate transporters from the MATE and ALMT families function independently to confer Arabidopsis aluminum tolerance. Plant Journal 57:389–399[pdf]

  • Kobayashi Y, Hoekenga OA, Itoh H, Nakashima M, Saito S, Shaff JE, Maron LG, Piñeros MA, Kochian LV, and Koyama H (2007) Characterization of AtALMT1 expression in aluminum-inducible malate release and its role for rhizotoxic stress tolerance in Arabidopsis. Plant Physiol.145: 843-852[pdf]

  • Magalhaes JV, Liu J, Guimaraes CT, Lana1 UGP, Alves VMC, Wang Y-H, Schaffert RE, Hoekenga OA, Piñeros MA, Shaff JE, Klein PE, Carneiro NP, Coelho CM, Trick HN, Kochian LV (2007) A gene in the multidrug and toxic compound extrusion (MATE) family confers aluminum tolerance in sorghum. Nature Genetics 39:1156-1161[pdf]

  • Liao H, Wan H, Shaff J, Wang X, Yan X, Kochian LV. Phosphorus and aluminum interactions in soybean in relation to aluminum tolerance. Exudation of specific organic acids from different regions of the intact root system. (2006) Plant Physiol.141: 674–684[pdf]

  • Hoekenga OA , Maron LG, Piñeros MA, Cancado GMA, Shaff JE, Kobayashi Y, Ryan PR, Dong B, Delhaize E, Sasaki T, Matsumoto H, Yamamoto Y, Koyama H, Kochian LV. (2006) AtALMT1, which encodes a malate transporter, is identified as one of several genes critical for aluminum tolerance in Arabidopsis. Proc. Nat. Acad. Sci. U.S.A. 103:9738–9743[pdf]

  • Piñeros MA, Shaff JE, Manslank HS, Alves VMC, Kochian LV (2005) Aluminum resistance in maize cannot be solely explained by root organic acid exudation. A comparative physiological study. Plant Physiol.137:231–241.[pdf]

  • Hoekenga OA, Vision TJ, Shaff JE, Monforte AJ, Lee GP, Howell SH, Kochian LV. (2003) Identification and characterization of aluminum tolerance loci in Arabidopsis (Landsberg erecta x Columbia) by quantitative trait locus mapping. A physiologically simple but genetically complex trait. Plant Physiol.132: 936–948[pdf]

  • Murphy AS, Eisinger WR, Shaff JE, Kochian LV, Taiz L. (1999) Early copper-induced leakage of K+ from Arabidopsis seedlings is mediated by ion channels and coupled to citrate efflux. Plant Physiol. 121:1375–1382[pdf]

  • Piñeros MA, Shaff JE, Kochian LV (1998) Development, characterization, and application of a cadmium-selective microelectrode for the measurement of cadmium fluxes in roots of Thlaspi species and wheat. Plant Physiol. 116: 1393–1401[pdf]

  • Piñeros MA, Shaff JE, Kochian LV, Bakker E (1998) Selectivity of liquid membrane cadmium microelectrodes based on the ionophore N,N,N’,N’-tetrabutyl-3,6-dioxaoctanedithioamide Electroanalysis 10:937-941[pdf]

  • Fox TC, Shaff JE, Grusak MA, Norvell WA, Chen Y, Chaney RL, Kochian LV (1996) Direct measurement of 59Fe-labeled Fe2+ influx in roots of pea using a chelator buffer system to control free Fe2+ in solution. Plant Physiol. 111:93-100 [pdf]

  • Jones DL, Shaff JE, Kochian LV (1995) Role of calcium and other ions in directing root hair tip growth in Limnobium stoloniferum I. Inhibition of tip growth by aluminum. Planta (1995)197:672 680[pdf]

  • Wang MY, Glass ADM, Shaff JE, Kochian LV (1994) Ammonium uptake by rice roots.III.. Electrophysiology. Plant Physiol. 104: 899-906[pdf]

  • Kochian, LV, Jones DL, Shaff JE (1994) The role of ion transport in root hair tip growth in Limnobium stoloniferum. In: Pollen-pistil interactions and pollen tube growth. AG Stephenson, T-H Kao, eds. American Society of Plant Physiologists. USA . pp 150-160

  • Kochian LV, Garvin DF, Shaff JE, Chilcott TC, Lucas WJ (1993) Towards an understanding of the molecular basis of plant K+ transport: characterization of cloned K+ transport cDNAs. Plant Soil 155/156: 115-118[pdf]

  • Welch RM, Norvell WA, Schaefer SC, Shaff JE, Kochian LV (1993) Induction of iron(III) and copper(II) reduction in pea (Pisum sativum L.) roots by Fe and Cu status: Does the root-cell plasmalemma Fe(III)-chelate reductase perform a general role in regulating cation uptake? Planta 190:555-561[pdf]

  • Kochian LV, Garvin DF, Shaff JE, Chilcott TC, Lucas WJ (1993). Towards an understanding of the molecular basis of plant K+ transport: characterization of cloned K+ transport cDNAs. In: Plant Nutrition - From Genetic Engineering To Field Practice, NJ Barrow, ed., Kluwer Academic Publishers, pp. 121-124.

  • Kochian LV, Shaff JE, Kühtreiber WM, Jaffe LF, Lucas WJ (1992) Use of an extracellular, ion-selective, vibrating microelectrode system for the quantification of K+ , H+ , and Ca2+ fluxes in maize roots and maize suspension cells. Planta 188:601-610[pdf]

  • Lauver TL, McCune DC,. Shaff JE, Kochian LV (1992) The use of ion-selective microelectrodes for measuring calcium and hydrogen ion transfer between foliar surfaces and simulated rain solutions. New Phytol. (1992), 121:179-185[pdf]

  • Ryan PR, Shaff JE, Kochian LV (1992) Aluminum toxicity in roots: Correlation among ionic currents, Ion fluxes, and root elongation in aluminum-sensitive and aluminum-tolerant wheat cultivars. Plant Physiol. 99, 1193-1200[pdf]

  • Glass ADM, Shaff JE, Kochian LV (1992) Studies of the uptake of nitrate in barley. IV. Electrophysiology. Plant Physiol. 99:456-463[pdf]

  • Huang JW, Shaff JE, Grunes DL, Kochian LV (1992) Aluminum effects on calcium fluxes at the root apex of aluminum-tolerant and aluminum-sensitive wheat cultivars. Plant Physiol. 98, 230-237[pdf]

  • Kochian, LV, Shaff, JE (1991) Investigating the relationship between aluminum toxicity, root growth, and root-generated ion currents. In: Plant-Soil Interactions at Low pH; Wright, R.J., Baligar, V.C., Murrmann, R.P., Eds.; Kluwer Academic Publishers: Dordrecht, The Netherlands, 769-778.

  • Kochian LV, Shaff JE, Ryan PR. 1991. Microelectrode-based investigations into the relationship between Al toxicity and root-cell membrane transport processes. Current Topics in Plant Biochem Physiol, 10: 117-133.

  • McClure PR, Kochian LV Spanswick RM, Shaff JE (1990) Evidence for cotransport of nitrate and protons in maize roots. effects of nitrate on the membrane potential. Plant Physiol.93:281-289[pdf]

  • McClure PR, Kochian LV Spanswick RM, Shaff JE (1990) Evidence for cotransport of nitrate and protons in maize roots II. Measurement of NO3- and H+ fluxes with ion-selective microelectrodes. Plant Physiol. (1990) 93:290-294[pdf]

  • DiTomaso JM, Shaff JE, and Kochian LV (1989) Putrescine-induced wounding and its effects on membrane integrity and ion transport processes in roots of intact corn seedlings. Plant Physiol. (1989) 90:988-995[pdf]

  • Kochian, LV, Shaff, JE, Lucas WJ (1989) High-affinity K+ uptake in maize roots: A lack of coupling with H+ efflux. Plant Physiol 91:1202-1211[pdf]

  • Miyasaka, SC, Kochian LV, Shaff JE, Foy CD (1989) Mechanisms of Aluminum tolerance in wheat. An investigation of genotypic differences in rhizosphere pH, K+, and transport H+, and root-cell membrane potentials. 91:1188-1196[pdf]