Dr. Claudia Uhde-Stone

NS 403, 510-885-2860

claudia.stone@csueastbay.edu

The research in my laboratory focuses on plant adaptation to nutrient stress, particularly to phosphorus and nitrogen deficiency. We are working with white lupin (Lupinus albus L.), a legume that is especially well adapted to growth on nutrient-deficient soils. A goal of our research is to learn more about the molecular and biochemical adaptations to nutrient deficiencies displayed by plants. This is important because nitrogen and phosphorus are the two most limiting nutrients for plant growth and development on much of the world’s arable land. By some estimates, world resources of inexpensive phosphorus fertilizer may be depleted in as little as 50 years; and the synthesis of industrial nitrogen fertilizer is very energy consuming and thus costly. Improvement of nutrient acquisition in crops is considered critical for economic, humanitarian, and environmental reasons.

Recent publications:

• Uhde-Stone, C., Lui, J., Zinn, K.E., D.L. Allan, D.L., and C.P. Vance. 2005. Transgenic proteoid roots of white lupin: a vehicle for characterizing and silencing root genes involved in adaptation to P stress. The Plant Journal 44:840-853.
• Uhde-Stone, C, Zinn, K.E., Ramirez-Yánez, M., Li, A., Vance C.P. and D.L. Allan. 2003. Nylon filter arrays reveal differential gene expression in proteoid roots of white lupin in response to P deficiency. Plant Physiology 131:1064-1079.
• Vance, C.P., Uhde-Stone, C., and D.L. Allan. 2003. Phosphorus acquisition and use: critical adaptations by plants for securing a nonrenewable resource. Tansley Review. New Phytologist 157:423-447.
• Uhde-Stone, C., Gilbert, G., Johnson, J. M.-F, Litjens, R., Zinn, K.E., Temple, S.J., Vance, C.P. and D.L. Allan. 2003. Acclimation of white lupin to phosphorus deficiency involves enhanced expression of genes related to organic acid metabolism. Plant and Soil 248:99-116.
• Uhde-Stone, C., Li, A., Daemen, M., Allan, D.L., and C.P. Vance. 2001. Isolation and characterization of white lupin proteoid root expressed sequence tags (ESTs) associated with plant hormones. p.32-33 In Development in Plant and Soil Sciences: Plant Nutrition. Food security and sustainability of agro-ecosystems through basic and applied research, Kluwer Academic Publishers.
• Liu, J., Uhde-Stone, C., Li, A., Vance, C.P., and D.L. Allan. 2001. A phosphate transporter with enhanced expression in proteoid roots of white lupin (Lupinus albus L.). Plant and Soil 237:257-266.