| Budget Amount *help |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2012: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
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| Outline of Final Research Achievements |
Sulfur (S) is one of the essential macro elements and its assimilation and metabolism has a great impact on plant growth. In addition, there are many health-beneficial and stress-relief sulfur-containing compounds in plants and their contents are highly influenced by the S availability. In this study, some regulatory machinery of S assimilation and metabolism has been investigated. We found Sulfur deficiency induced (SDI)1 and 2 function as the repressors of glucosinolates (GSL) biosynthesis. We revealed that SDI1 binds to MYB28, a transcription factor stimulates the expression of GSL synthetic genes, in the nucleus and suppresses the expression of GSL biosynthetic genes. We also determined a sulfur responsive element SURE21 existing in the 3’untranscribed region of sulfate transporter SULTR2;1 and demonstrated its contribution to the induction of sulfate uptake and translocation to shoots. We also found cadmium treatment induces sulfate uptake and its translocation to shoots.
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