Abstract
In this study, we analyzed soluble proteins in winter bud during endodormancy release. Endodormancy of winter buds of Salix bakko and Larix kaempferi was released clearly in early and late December, respectively. SDS-PAGE analysis showed that soluble protein composition of buds in each species hardly changed in a short period of endodormancy release. Proteome analysis using LC-MS/MS revealed compositional changes in soluble proteins in this period of endodormancy release. However, the proportion of soluble proteins whose levels were changed in this period was under 5% of all detected proteins in each species of winter buds, and the variation was small.