| Budget Amount *help |
¥125,970,000 (Direct Cost: ¥96,900,000、Indirect Cost: ¥29,070,000)
Fiscal Year 2013: ¥22,880,000 (Direct Cost: ¥17,600,000、Indirect Cost: ¥5,280,000)
Fiscal Year 2012: ¥22,880,000 (Direct Cost: ¥17,600,000、Indirect Cost: ¥5,280,000)
Fiscal Year 2011: ¥22,880,000 (Direct Cost: ¥17,600,000、Indirect Cost: ¥5,280,000)
Fiscal Year 2010: ¥22,880,000 (Direct Cost: ¥17,600,000、Indirect Cost: ¥5,280,000)
Fiscal Year 2009: ¥34,450,000 (Direct Cost: ¥26,500,000、Indirect Cost: ¥7,950,000)
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| Outline of Final Research Achievements |
CO2 acts as an environmental signal that regulates stomatal movements. In contrast to our advanced understanding of light and drought stress responses in guard cells, the molecular mechanisms underlying stomatal CO2 sensing and signaling are largely unknown. Leaf temperature provides a convenient indicator of transpiration, and can be used to detect mutants with altered stomatal control. To identify genes that function in CO2 responses in guard cells, CO2 insensitive mutants were isolated through high-throughput leaf thermal imaging. The isolated mutants are categorized into three-groups according to their phenotypes: (1) impaired in stomatal opening under low CO2 concentrations; (2) impaired in stomatal closing under high CO2 concentrations; (3) impaired in stomatal development. Characterization of these mutants has begun to yield insights into the mechanisms of stomatal CO2 responses.
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