On trophic function of soil organic matter

• Published in: Vestnik S.-Peterburgskogo universiteta. Seriya 3 (Russian Federation) no. 3
• Main Authors: Popov, A.I, Chertov, O.G
• Format: Publication
• Language: Russian
• Published: 1993
• Subjects: ABSORCION DE SUSTANCIAS NUTRITIVAS; ABSORPTION DE SUBSTANCES NUTRITIVES; ACIDE AMINE; AMINOACIDOS; COMPOSE ORGANIQUE; COMPUESTOS ORGANICOS; HUMUS; LIGNINAS; LIGNINE; MATERIA ORGANICA; MATIERE ORGANIQUE; MYCORHIZE; MYCORRHIZAE; NUTRICION DE LAS PLANTAS; NUTRITION DES PLANTES; PLANTAS; PLANTE; SOL; SUELO

It has been pointed out that a consumption and assimilation of some organic molecules by plant roots has been a well-proved scientific fact nowadays. We suppose that plants obtain structural compartments of lignin, aminoacids and other organic biologically active substances (arenoglycoproteid oligo- or/and polymers) from a soil organic matter directly or through mycorrhizae. This organic nutrition of higher plants has been supposed to be the dominating type of nutrition in natural ecosystems because of energetic and structural gain of an ecosystem level. This nutrition mechanism has been inherited from the early stages of biosphere evolution. The higher plants have all types of digestion by A.M.Ugolev's theory [1991]. So the higher plant roots system is similar to the digestion systems of obligate heteretrophic organisms, and it is an "exo-stomach" of plants. The consequence of these postulates is the presence of the cycle of organic molecules (structural and functional cpmpartments of biological macromolecules) in ecosystems. These compartments can be frequenty used on different trophic levels, first of all for phytomass and humic substances production