| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
Pod dehiscence (shattering) causes a significant yield loss in legume crops. However, little is known about the genetic basis of the shattering resistance in those crops. Map-based cloning of a major quantitative trait locus controlling pod dehiscence in soybean and complementation test revealed that the gene identified, Pdh1, encoded a dirigent-like protein. In shattering-resistant cultivars, the gene was defective with a premature stop codon. Functional Pdh1 was specifically expressed in pod walls. Comparison of near-isogenic lines indicated that Pdh1 regulate torsion of dried pod walls, which functions as force to dehisce binding of pod walls. These findings provide useful information for plant breeding and point to a new biological role for the dirigent-like proteins.
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