and distribution of seed storage proteins are responsible for the quality of soybean and seed development. Among storage proteins, lipoxygenase isoforms (Mw. ~97 kDa) play a major role in the distinct bean flavor during storage. In this study, we compared three soybean elite cultivars viz., JIMPUM, JINPUM2 and TANMI2 (lipoxygenase null mutants, originated from Japan) along with WILLIAMS 82 (control plant, USA) to determine the seed storage proteins by proteomic approach. Phenotype of the mature seeds showed the variation in seed coat, color and appearance. Total seed proteins of the above cultivars were subjected to two dimensional gel electrophoresis (2-DE). The resulted protein profiling showed the intensity of the different quantitative spots varied among the four cultivars. We are now investigating by using other proteomic tool and the resulted difference in proteins may helpful in quality improvement or the functional roles in the seed development.

• Kesavan Markkandan(Department of Plant Science, College of Agriculture and Life Science, and Plant Genomics and Breeding Institute, Seoul National University)
• Bong Soo Park(Department of Plant Science, College of Agriculture and Life Science, and Plant Genomics and Breeding Institute, Seoul National University)
• Soon Ho Choi1(Department of Plant Science, College of Agriculture and Life Science, and Plant Genomics and Breeding Institute, Seoul National University)
• Hak Soo Seo(Department of Plant Science, College of Agriculture and Life Science, and Plant Genomics and Breeding Institute, Seoul National University Bio-Max Institute, Seoul National University) Corresponding author