Prof. Dr. Walter J. Horst

Institute of Plant Nutrition, University of Hannover 

The Institute of Plant Nutrition, Prof. Dr. W. J. Horst, will act as the Coordinator of the programme. He has ample experience in coordinating complex research consortia: he coordinated a previous STD III and a INCO1 programme. He is an internationally highly recognised scientist as reflected by his membership on International Steering Committees (International Symposium on Plant-Soil Interactions at Low pH, International Symposium on Genetics and Molecular Biology of Plant Nutrition, International Symposium on Phosphorus in the Soil-Plant Continuum, and the International Plant Nutrition Council as President), the invitation as Visiting Scientist in the Laboratory of Cell Genetics, Research Institute of Bioresources, Okayama University, Kurashiki, Japan, one of the world leading Institutes in the research on Physiology and Mol. Biology of Al toxicity and resistance, and has published more than 60 pier reviewed articles in internationally highly recognised journals.

The Coordinator is involved in research on the adaptation of different plant species to factors of the soil-acidity complex (Al toxicity, Mn toxicity, Ca efficiency, P efficiency, N efficiency) for more than 20 years. This work mainly focussed on the physiology of resistance/efficiency. However, also screening techniques were developed and screening of germplasm performed under laboratory and field conditions in tropical regions in close cooperation with breeding programmes at International Research Centers (CIMMYT, IITA). He was also involved in field experiments in the tropics in which the effect of cropping systems (alley cropping, mixed cropping, covercrops) on nutrient use and nutrient budgets of the systems were evaluated and quantified.

Due to his research experience in all of the involved scientific fields the Coordinator is especially well qualified for the coordination of such a great and divers consortium. Also, the Institute of Plant Nutrition can provide most of the necessary infrastructure necessary for the coordination of the Consortium.



Horst, W. J. (1995): The role of the apoplast in aluminium toxicity and resistance of higher plants. Z. Pflanzenernähr. Bodenk. 158, 419-428.

Sivaguru, M., Horst, W.J. (1998): The transition zone is the most aluminium-sensitive apical root zone of Zea mays L. Plant Physiol. 116, 155-163.

OIKEH, S.O., CHUDE, V.O., CARSKY, R:J:, WEBER, G:K:, HORST, W.J. (1998): Legume rotation in the moist tropical savanna: managing soil nitrogen dynamics and cereal yields in farmers fields. Expt. Agric. 34, 73-83.

KAMH, M., HORST, W.J., AMER, F., MOSTAFA, H., MAIER, P. (1999): Mobilization of soil and fertilizer phosphate by cover crops. Plant and Soil (in press).

SIVAGURU, S., BALUSKA, F., VOLKMANN, D., FELLE, H.H., HORST, W.J. (1999): Impacts of aluminium on cytoskeleton and morphological organization of the maize root apex. Plant Physiol. 119, 1073-1082.

SCHMOHL, N. and HORST, W.J.(2000): Cell-wall pectin-content modulates aluminium sensitivity of Zea mays L. cells grown in suspension culture. Plant Cell and Environment 23, 735-742.

KOLLMEIER, M., DIETRICH, P., BAUER, C.S., HORST, W.J., HEDRICH, R. (2001): Aluminium activates a citrate-permeable anion channel in the Al-sensitive zone of the maize root apex: a comparison between an Al-sensitive and an Al-resistant cultivar. Plant Physiol. 2001 126: 397-410.