Searching of environmental stress markers of kelp by protein profiling

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The number and the amount of protein that changes expression level by temperature and nutrient stresses were investigated on Saccharina japonica. As the result, 47 spots that increase the expression level under high water temperature and 7 spots that decrease under the condition were detected. And, a few spots that increase under oligotrophic conditions were found. When the electrophoretic profiles were compared, it was thought that some of them were corresponding to already-known proteins that increased under high water temperature. Hence, those use as environmental stress marker is expected.