This book differs from existing texts in the field of ion transport in plants (Liittge, Epstein) by a more limited scope. The author deals exclusively with ion transport in roots and disregards results obtained with algae or leaf cells. Furthermore questions of mineral nutrition in a wider sense are not considered. After a brief introduction into root morphology and anatomy the chain of events eventually leading to translocation of ions to the aerial parts is discussed in consecutive chapters interspersed with more theoretical considerations. At the end there are some summarizing conclusions and outlooks.