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United States Department of Agriculture

Agricultural Research Service

Research Project: Enhanced Disease and Abiotic Stress Resistance in Edible Legumes

Location: Grain Legume Genetics Physiology Research

Title: Mineral allocation to pod walls and seeds in common bean

Authors
item Grusak, Michael
item Coghlan, Caitlin -
item Miklas, Phillip

Submitted to: Bean Improvement Cooperative Annual Report
Publication Type: Proceedings
Publication Acceptance Date: February 11, 2014
Publication Date: March 1, 2014
Citation: Grusak, M.A., Coghlan, C.J., Miklas, P.N. 2014. Mineral allocation to pod walls and seeds in common bean. Bean Improvement Cooperative Annual Report. 57: 27-28.

Interpretive Summary: Common bean (Phaseolus vulgaris L.) is an important source of dietary nutrients, energy, and fiber for humans. Because we are interested in improving the mineral nutritional quality of bean seeds, we have investigated various temporal and spatial aspects of whole-plant mineral transport in an attempt to identify rate-limiting steps. For this study we focused on the role of pod walls in the trafficking of minerals to seeds. We analyzed final mineral content in seeds and pod walls of greenhouse-grown Andean bean lines, in order to identify possible limitations in this process. We also measured the dynamics of mineral flow between pod walls and developing seeds. These profiles are used to discuss strategies for manipulating pod and seed nutrient allocation in bean, in order to enhance seed nutritional quality.

Technical Abstract: Common bean (Phaseolus vulgaris L.) is an important source of dietary nutrients, energy, and fiber for humans. Because we are interested in improving the mineral nutritional quality of bean seeds, we have investigated various temporal and spatial aspects of whole-plant mineral transport in an attempt to identify rate-limiting steps. For this study we focused on the role of pod walls in the trafficking of minerals to seeds. We analyzed final mineral content in seeds and pod walls of greenhouse-grown Andean bean lines, in order to identify possible limitations in this process. We also measured the dynamics of mineral flow between pod walls and developing seeds. These profiles are used to discuss strategies for manipulating pod and seed nutrient allocation in bean, in order to enhance seed nutritional quality.

Last Modified: 12/18/2014
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