| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
Vernalization in which an extended period of low temperature in winter results in the flowering induction during the following spring. It is an important adaptive trait for long-day plants which are germinated at autumn. In wheat and barley, a flowering promoter MADS-box gene VERNARIZATION 1 (VRN1) is epigenetically up-regulated by vernalization, and plays a central role in flowering. Cytoplasmic substitution (alloplasmic) lines of wheat (Triticum aestivum) that carry the cytoplasm (mitochondrial genome) of the wild relative Aegilops geniculata show delayed flowering-time compared with the normal cytoplasm (euplasmic) lines. In this study, using the alloplasmic line, I indicated the possibility that mitochondrial genome contains the vernalization sensor gene which affects the epigenetic state of nuclear VRN1 gene.
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