Soil/root interactions

A. Jungk, Soil-root interactions in the rhizosphere affecting plant availability of phosphorus. J. Plant Nutr. 70 1197 (1987). 

Role of Humic Substances in Soil-Root Interaction 350... 

ROLE OF HUMIC SUBSTANCES IN THE SOIL-ROOT INTERACTION... 

Goss MJ, Kay BD (2005) Soil aggregation. In Zobel RW, Wright SF (eds) Roots and soil management interactions between roots and the soil. ASA, CSSA, and SSSA, Madison WI, USA, pp 163-180... 

It is reasonable to assume the effect of plant roots and tops on the soil would be the same. However, this is not the case. Plant roots profoundly affect the chemical characteristics of soil. Because they are in intimate contact with the soil, roots are constantly extracting nutrients and water from the soil and exuding materials into it. The intimate relationship, which includes physical, microbiological, biochemical, bioorganic, and chemical interactions between roots and soil, is illustrated in Figure 4.3. 

Trolove SN. 2000. Root-soil-phosphate interactions in rice growing in aerobic soil. PhD thesis, Massey University. 

Furthermore, abiotic and biotic reactions are not independent but rather, interactive processes in soil environments. Interactions of abiotic and biotic processes are thus very important in governing the dynamics and fate of metals and metalloids in soils, especially at the soil-root interface. Abiotic and biotic interactions in the rhizosphere in influencing the stabilization of contaminants and the efficacy of ameliorants need to be investigated. The impact of physical, chemical, and biological interfacial interactions on risk assessment and management of metal and metalloid contamination and restoration of ecosystem health merits close attention. 

TRANSFORMATIONS AND DYNAMICS OF METALS AND METALLOIDS AS INFLUENCED BY SOIL-ROOT-MICROBE INTERACTIONS... 

Rigol, A., Vidal, M., and Rauret, G. (2002). An overview of the effect of organic matter on soil-radiocaesim interaction implications in root uptake. J. Environ. Radioact. 58, 191-216. 

Features chapters grouped under three broad topics Fundamentals of Bioric and Abiotic Interactions of Metals and Metalloids with Soil Components Fransftirmations and Dynamics of Metals and Metalloids as Influenced by Soil-Root-Microhe Interactions Speciation, Mobility, and Bioavailafuliiy of Metals and Metalloids and Restoration of Contaminated Soils... 

Hiitterman, A. and Ulrich, B. (1984). Solid phase-solution-root interaction in soils subjected to acid deposition. Philos. Trans. R. Soc. London Ser.B 305, 352-368. 

Parker, D.R., Reichman, S.M., Crowley, D.E., 2005. Metal chelation in the rhizosphere. In Wright, S.F., Zabeb, R.W. (Eds.), Root Soil Management Interactions Between Roots and the Soil, Monograph No. 48. American Society of Agronomy, Soil Science Society of America, Madison, WI (in press). 

An important feature of the biogeochemistry of trace elements in the rhizosphere is the interaction between plant root surfaces and the ions present in the soil solution. Although the solid phases of the soil may be the reservoir from which many ions are derived, the soil solution is the phase with which the plant roots interact most directly. The ions, especially the cahons, of the soil solution may accumulate in the aqueous phases of cell surfaces external to the plasma membranes... 

Direct evidence for silica - organic acid interactions and enhanced quartz dissolution in aqueous organic acid solutions is sparse. Evans (1964) reviewed some of the early work in determining the actions of nucleic acids, blood serum, and ATP on quartz dissolution. Duff et al. (1963) suggested that organic acids may enhance quartz dissolution. Crook (1968) and Cleary and Conolly (1972) found chemically weathered quartz grains in soil root zones. Siever (1960) investigated the solubility of silica polymorphs in a... 

Soil and plant root interactions occur across two interfaces. One is the interface between plant roots and the liquid phase and the other is the interface between the soil particles and the liquid phase. 

The indirect pathway by which air pollutants interact with plants is through the root system. Deposition of air pollutants on soils and surface waters can cause alteration of the nutrient content of the soil in the vicinity of the plant. This change in soil condition can lead to indirect or secondary effects of air pollutants on vegetation and plants. 

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