Plant Physiology - M.M. Musiienko 2001

Root nutrition of plants
Ion transport and plant metabolism

Ion transport in plants, which is a crucial link in the processes of GROWTH AND DEVELOPMENT, Bioenergetics regulation, and Biosynthesis, has been intensively studied since the late 1920s. The works of D. Hoagland, G. Briggs, H. Lundegårdh, and D.A. Sabinin laid the foundation for studying The Role of proton exchange in salt absorption and its energetic link to Respiration. Over nearly 60 years of searching for The regulatory mechanisms of ion transport, researchers' interest gradually shifted from studying ion adsorption on The Cell surface to active ion accumulation in vacuoles, and only later, in the 1960s and 1970s, to ionic processes in the Cytoplasm and cell membranes. These studies culminated in the investigation of membrane ATPases and the general recognition of H⁺-transporting pumps.

Studying the role of proton pumps as molecular current generators and proton-motive force became a central issue in membrane bioenergetics. It took many years and the efforts of scientists from many countries for the first steps in understanding the mechanisms of electrochemical regulation to lead, in the 1980s, to the generally accepted hypothesis of the relationship between electron pumps and voltage-Gated Ion Channels.

The intensive Study of the membrane transport apparatus is now closely aligned with the practical demands of agricultural economics and technology. Today, it is intimately linked to the optimal ratio of mineral nutrients to enhance plant productivity and resilience. This direction of fundamental research is crucial not only for developing resource-saving technologies amidst skyrocketing mineral fertilizer prices but also, in turn, poses several key theoretical challenges in maintaining optimal operating modes of H⁺-pumps. Studying the kinetic characteristics of membrane pumps will enable the Selection of plant varieties adapted to specific conditions. This may also open new pathways for physiological plant breeding, scientifically grounded mineral Nutrition technologies for cell cultures, and The production of protein producers and physiologically active compounds.

Solving Structure/149.html">The problem of ion transport is also crucial for cell selection, which has long faced the urgent need for "input" and "output" control to select plants based on The activity of their transport pumps. Regulating membrane ion permeability has also become a key task in Introduction/32.html">Genetic Engineering during somatic Hybridization, electroporation, and the delivery of nucleic acid molecules in pH-sensitive Liposomes. Thus, new aspects of modern plant membranology and the principles of electrochemical regulation of Ion Exchange—at the level of the whole plant, as well as its individual Organs, Cells, Organelles, and membrane models—affect many facets of plant cell life. Enhanced ion Transport from the soil allows for The regulation of various PHYSIOLOGICAL AND BIOCHEMICAL processes: chloroplast Homeostasis (Mg²⁺, Ca²⁺, Na⁺), Cell wall extension (H⁺), Transport of Assimilates and Hormones across the tonoplast and Plasma Membrane (Ca²⁺, H⁺), and stomatal movement (K⁺, H⁺).