Author
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Grusak, Michael |
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COGHLAN, CAITLIN - St Edward'S University |
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Miklas, Phillip - Phil |
Submitted to: Bean Improvement Cooperative Annual Report
Publication Type: Proceedings Publication Acceptance Date: 2/11/2014 Publication Date: 3/1/2014 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. |