The use of Arabidopsis as a foreign host to analyze the seed dormancy function of candidate genes from cereals

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We analyzed the seed dormancy function of cereal genes using transgenic Arabidopsis as a foreign host. This analysis revealed that one of candidates, TaDOG1L4 from wheat, functioned in seed dormancy in Arabidopsis. To examine whether this gene really exhibits the dormancy function also in wheat, we developed transgenic wheat lines in which TaDOG1L4 was highly expressed or down regulated. The result demonstrated that this gene played a role in the regulation of wheat dormancy and its high expression in wheat enabled to enhance seed dormancy.