|Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
|Outline of Final Research Achievements
While the phytohormone ethylene is known to play a crucial role in petal senescence in some plant species, little is known about the regulation of ethylene-independent petal senescence. In Japanese morning glory cv. Violet, an ethylene-independent flower, the abundance of microRNA156 (miR156) increased in senescing petals. We analyzed a role of potential target genes of miR156, SQUAMOSA PROMOTER BINDING PROTEIN LIKE (SPL) homologs, in petal senescence. The results suggest that the SPL genes are not involved in the regulation of petal senescence; however, the SPL genes may play a role in the regulation of flowering.