Abstract
Purpose
Hydroxyl ion release by maize (Zea mays L.) roots under acidic conditions was investigated with a view to develop a bioremediation method for ameliorating acid soils in tropical and subtropical regions.
Materials and methods
Two hydroponic culture experiments and one pot experiment were conducted: pH, nitrogen state, and rhizobox condition, which investigated the effects of different nitrogen forms on hydroxyl release by maize roots under acidic conditions.
Results and discussion
The pH of the culture solution increased as culture time rose. The gradient of change increased with rising NO3 −/NH4 + molar ratios. Maize roots released more hydroxyl ions at pH 4.0 than at pH 5.0. The amount of hydroxyl ions released by maize roots at a constant pH was greater than those at a nonconstant pH. Application of calcium nitrate reduced exchangeable acidity and increased the pH in an Ultisol rhizosphere, compared with bulk soil. The increasing magnitude of soil pH was greater at higher doses of N. The absorption of NO3 −–N increased as the NO3 −/NH4 + molar ratios rose, which was responsible for hydroxyl ion release and pH increases in culture solutions and rhizosphere.
Conclusions
Root-induced alkalization in the rhizosphere resulting from nitrate absorption by maize plants can be used to ameliorate acidic Ultisols.
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References
Arnold G (1992) Soil acidification as caused by the nitrogen uptake pattern of Scots pine (Pinus sylvestris). Plant Soil 142:41–51
Bolan NS, Hedley MJ, White RE (1991) Processes of soil acidification during nitrogen cycling with emphasis on legume based pastures. Plant Soil 134:53–63
Bravin MN, Marti AL, Clairotte M, Hinsinger P (2009) Rhizosphere alkalisation—a major driver of copper bioavailability over a broad pH range in an acidic copper-contaminators soil. Plant Soil 318:257–268
Conyers MK, Heenan DP, Poile GJ, Cullis BR, Helyar KR (1996) Influence of dryland agricultural management practices on the acidification of soil profile. Soil Till Res 37:127–141
Conyers MK, Tang C, Poile GJ, Liu DL, Chen DL, Nuruzzaman Z (2011) A combination of biological activity and the nitrate form of nitrogen can be used to ameliorate subsurface soil acidity under dryland wheat farming. Plant Soil 348:155–166
Cregan P, Scott B (1998) Soil acidification—an agricultural and environmental problem. In: Pratley J, Robertson A (eds) Agriculture and the environmental imperative. CSIRO, Collingwood, pp 98–128
Durand R, Bellon N, Jaillard B (2001) Determining the net flux of charge released by maize roots by directly measuring variations of the alkalinity in the nutrient solution. Plant Soil 229:305–318
Errebhia M, Wilcoxa GE (1990) Tomato growth and nutrient uptake pattern as influenced by nitrogen form ratio. J Plant Nutr 13:1031–1043
Guo JH, Liu XJ, Zhang Y, Shen JL, Han WX, Zhang WF, Christie P, Goulding KWT, Vitousek PM, Zhang FS (2010) Significant acidification in major Chinese croplands. Science 327:1008–1010
Hedley MJ, Nye PH, White RE (1982) Plant induced changes in the rhizosphere of rape (Brassica napus var. Emerald) seedlings: I. The origin of the pH change. New Phytol 91:31–44
Helyar KR (1976) Nitrogen cycling and soil acidification. J Aust Institute Agri Sci 42:217–221
Hinsinger P, Plassard C, Tang C, Jaillard B (2003) Origins of root mediated pH changes in rhizosphere and their responses to environmental constrains: a review. Plant Soil 248:43–59
Jarvis SC, Robson AD (1983) The effect of nitrogen nutrition of plants on the development of acidity in West Australian soils II. Effects of differences in cation/anion balance between plant species grown under non leaching conditions. Aust J Agri Res 34:355–365
Khonje DJ, Varsa EC, Klubek B (1989) The acidulation effects of nitrogenous fertilizers on selected chemical and microbiological properties of soil. Commun Soil Sci Plant Analy 20:1377–1395
KIotz F, Hoist WJ (1988) Genotypic differences in aluminium tolerance of soybean (Glycine max L.) as affected by ammonium and nitrate-nitrogen nutrition. J Plant Physiol 132:702–707
Pansu M, Gautheyrou J (2006) Handbook of soil analysis—mineralogical, organic and inorganic methods. Springer-Verlag, Heidelberg
Paul KI, Black AS, Conyers MK (2003) Development of acidic subsurface layers of soil under various management systems. Adv Agron 78:187–214
Römheld V, Mailer C, Marsehner H (1984) Localization and capacity of proton pumps in roots of intact sunflower plants. Plant Physiol 76:603–606
Sas L, Rengel Z, Tang C (2001) Excess cation uptake and extrusion of proton and organic acid anions in Lupinus albus under P deficiency. Plant Soil 160:1191–1198
Sas L, Rengel Z, Tang C (2002) The effect of nitrogen nutrition on cluster root formation and proton extrusion by Lupinus albus. Ann Bot 89:435–442
Schubert S, Yan F (1997) Nitrate and ammonium nutrition of plants effects on acid/base balance and adaptation of root cell plasma lemma H+ ATP-pase. Z Pflanzenernahr Bodenk 160:175–281
Smiley RW (1974) Rhizosphere pH as influenced by plants, soils and nitrogen fertilizers. Soil Sci Soc Am Proc 38:795–799
Sumner ME, Noble AD (2003) Soil acidification: the world story. In: Rengel Z (ed) Handbook of soil acidity. Marcel Dekker, New York, pp 1–28
Tang C, Rengel Z (2003) Role of plant cation/anion uptake ratio in soil acidification. In: Rengel Z (ed) Handbook of soil acidity. Marcel Dekker, New York, pp 57–81
Tang C, Raphael C, Rengel Z, Bowden JW (2000) Understanding subsoil acidification: effect of nitrogen transformation and nitrate leaching. Aust J Soil Res 38:837–849
Tang C, Conyers MK, Nuruzzaman M, Poile GJ, Liu DL (2011) Biological amelioration of subsoil acidity through managing nitrate uptake by wheat crops. Plant Soil 338:383–397
Van Beusichem ML, Baas R, Kirkby EA, Nelemans JA (1985) Intracellular pH regulation during NO3 − assimilation in shoot and roots of Ricinus communis. Plant Physiol 78:768–773
Van Beusichem ML, Kirkby EA, Baas R (1988) Influence of nitrate and ammonium nutrition on the uptake assimilation, and distribution of nutrients in Ricinus cornmunis. Plant Physiol 86:914–921
Von Uexküll HR, Mutert E (1995) Global extent, development and economic impact of acid soils. In: Date RA, Grundon NJ, Raymet GE, Probert ME (eds) Plant–soil interaction at low pH: principles and management. Kluwer , Dordrecht, pp 5–19
Weligama C, Tang C, Sale PWG, Conyers MK, Liu DL (2008) Localised nitrate application together with phosphorus enhances root proliferation of wheat and maximizes rhizosphere alkalisation in acid subsoil. Plant Soil 312:101–115
Weligama C, Sale PWG, Conyers MK, Liu DL, Tang C (2010) Nitrate leaching stimulates subsurface root growth of wheat and increases rhizosphere alkalisation in a highly acidic soil. Plant Soil 328:119–132
Wellgama C, Tang C, Sate PWG, Conyers MK, Liu DL (2010) Application of nitrogen in NO3 − form increases rhizophere alkalisation in the subsurface soil layer in an acid soil. Plant Soil 333:403–416
Xiong Y, Li QK (1990) Soils of China. Science , Beijing, pp 67–79
Xu RK, Coventry DR, Farhoodi A, Schultz JE (2002) Soil acidification as influenced by crop rotations, stubble management, and application of nitrogenous fertilizers, Tarlee, South Australia. Aust J Soil Res 40:483–496
Yan F, Feuerle R, Schaffer S (1998) Adaptation of active proton pumping and plasma lemma ATPase activity of corn roots to low root medium pH. Plant Physiol l17:311–319
Acknowledgments
This study was supported by the Knowledge Innovation Program Foundation of the Chinese Academy of Sciences (KZCX2-EW-405) and the National Natural Science Foundation of China (41230855).
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Masud, M.M., Guo, D., Li, Jy. et al. Hydroxyl release by maize (Zea mays L.) roots under acidic conditions due to nitrate absorption and its potential to ameliorate an acidic Ultisol. J Soils Sediments 14, 845–853 (2014). https://doi.org/10.1007/s11368-013-0837-5
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DOI: https://doi.org/10.1007/s11368-013-0837-5