Mechanism of homoeolog-number counting in polypoid plant species
Project/Area Number |
24658008
|
Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
Allocation Type | Multi-year Fund |
Research Field |
Breeding science
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Research Institution | Fukui Prefectural University |
Principal Investigator |
MURAI Koji 福井県立大学, 生物資源学部, 教授 (70261097)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
Keywords | 倍数性 / 同祖遺伝子 / MADSボックス遺伝子 / 花器官形成 / パンコムギ / 合成6倍体 / エピジェネティック制御 / コムギ / エピジェネティック |
Outline of Final Research Achievements |
Allopolyploidization, the doubling of chromosome number in species hybrids, generates polyploids with genome sets derived from related species. Allopolyploidization is an important process both for angiosperm evolution and for functional innovations, such as the development of inflorescence structure. Bread wheat (Triticum aestivum) is an allohexaploid species with a genome constitution AABBDD which derived from ancestral diploid species. In this study, I examined the expression patterns of homoeologs of class B, C and D MADS-box genes for floral formation. The homoeolog-specific expression pattern was different in every MADS-box gene, and the differential patterns of homoeologs were consistently observed among different hexaploid wheat varieties and synthetic hexaploid wheat lines developed by the artificial crosses between tetraploid wheat and Ae. tauschii. These results suggest that homoeolog-specific regulation of the floral MADS-box occurs in allopolyploid wheat.
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Report
(4 results)
Research Products
(7 results)