| Budget Amount *help |
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2015: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2013: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Outline of Final Research Achievements |
Restriction of cell division at the early stage of plant organogenesis has been studied mostly with temperature-sensitive mutants of Arabidopsis, which has provided the following findings. At the initiation of lateral root primordium development, anticlinal, asymmetric division of pericycle cells is restricted to a few rounds by a mitochondrion-related mechanism. This control is particularly vulnerable to defects of mitochondrial mRNA metabolism and high temperatures. Polyadenylation is a key event in the mitochondrial mRNA defects. When adventitious bud primordia are built during shoot regeneration, cell division is restricted along with repressive control of the CUC-STM pathway. Impairments of ribosomal biosynthesis disrupt these regulations, via the transcription factor ANAC082, as a stress response.
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