Abstract
The movement of nutrients from soil towards the absorbing cells of the plant roots appears to be controlled by a mucilaginous interface composed prevalently of polysaccharides and characterized by a fibrillar structure. A network of Ca-polygalacturonate arranged in fibrils similar to those of plant roots has been obtained. In this paper such a formation is documented and discussed in structural terms.
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References
Darwill A, McNeil M, Albersheim P and Delmer D P 1980 The primary cell walls of flowering plants. In The Biochemistry of Plants: A Comprehensive Treatise Vol 1. Ed N E Tolbert. pp 92–157. Academic Press, New York.
Deiana S, Erre L, Micera G, Piu P and Gessa C 1980 Coordination of transition-metal ions by polygalacturonic acid: A spectroscopic study. Inorg. Chim. Acta 46, 249–253.
Deiana S, Micera G, Muggiolu G, Gessa C and Pusino A 1983 Interaction of transition-metal ions with polygalacturonic acid: A potentiometric study. Colloids Surfaces 6, 17–25.
Floyd R A and Ohlrogge A J 1970 Gel formation on nodal root surfaces of Zea mays. I. Investigations on the gel composition. Plant and Soil 33, 341–343.
Gessa C, De Cherchi M L, Dessi' A, Deiana S and Micera G 1983 The reduction of Fe(III) to Fe(II) and V(V) to V(IV) by polygalacturonic acid: A reduction and complexation mechanism of biochemical significance. Inorg. Chim. Acta 80, L53-L55.
Gessa C, Deiana S and Marceddu S 1989 Fibrillar structure of Ca-polygalacturonate as a model for soil-root interface: Metal ion absorption and its effect on the free space volume of the system. In Plant Membrane Transport: The Current Position. Eds. J Dainty, M I De Michelis, E Marré and F Rasi-Caldogno. pp 615–616. Elsevier Publishers, Amsterdam.
Grant G T, Morris E R, Rees D A, Smith P J C and Thom D 1973 Biological interactions between polysaccharides and divalent cations: The egg-box model. FEBS Letters 32, 195–198.
Guckert A, Breisch H and Reisinger O 1975 Interface solracine. I. Etude au microscope electronique des relations mucigel-argile-microorganismes. Soil Biol. Biochem. 7, 241–250.
Jenny H and Grossenbacher K 1963 Root-soil boundary zones as seen in the electron microscope. Soil Sci. Soc. Am. Proc. 27, 273–277.
Kohn R and Luknár O 1977 Intermolecular calcium ion binding on polyuronate-polygalacturonate and polyguluronate. Coll. Czech. Chem. Commun. 42, 731–744.
Kohn R and Furda I 1967 Calcium ion activity in solutions of calcium pectinate. Coll. Czech. Chem. Commun. 32, 1925–1937.
Leppard G G and Ramamoorthy S 1975 The aggregation of wheat rhizoplane fibrils and the accumulation of soil-bound cations. Can. J. Bot. 53, 1729–1735.
Leppard G G 1974 Rhizoplane fibrils in wheat: Demonstration and derivation. Science 185, 1066–1067.
Moorby J 1981 Transport Systems in Plants. pp 28–32. Longman Inc, New York.
Morel J L, Mench M and Guckert A 1986 Measurements of Pb(II), Cu(II) and Cd(II) binding with mucilage exudate from maize (Zea mays L.) roots. Biol. Fertil. Soils 2, 29–34.
Nakamoto K 1977 Infrared and Raman Spectra of Inorganic and Coordination Compounds. pp 232–238. Wiley and Sons, New York.
Nambiar E K S 1976 Uptake of 65Zn from dry soil by plants. Plant and Soil 44, 267–271.
Paull R E, Johnson C M and Jones R L 1975 Studies on the secretion of maize root cap slime. I. Some properties of the secreted polymer. Plant Physiol. 56, 300–306.
Ramamoorthy S and Leppard G C 1977 Fibrillar pectin and contact cation exchange at the root surface. J. Theor. Biol. 66, 527–540.
Wright K and Northcote D H 1974 The relationship of root-cap slimes to pectins. Biochem. J. 139, 525–534.
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Gessa, C., Deiana, S. Fibrillar structure of Ca polygalacturonate as a model for a soil-root interface. Plant Soil 129, 211–217 (1990). https://doi.org/10.1007/BF00032415
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DOI: https://doi.org/10.1007/BF00032415