Deciphering molecular mechanisms of floret development in Triticeae crops
Project/Area Number |
16K18635
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Science in genetics and breeding
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Research Institution | Tottori University |
Principal Investigator |
SAKUMA Shun 鳥取大学, 農学部, 助教 (40717352)
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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Keywords | 収量 / 穂形態 / 遺伝子 / 進化 / オオムギ / コムギ / 小花 / 穀粒数 / 穀粒サイズ / 変異体 / 育種学 / 遺伝学 / 植物 |
Outline of Final Research Achievements |
Inflorescence architecture influences final grain yield in Triticeae crops such as wheat and barley. However, little is known regarding the genetic basis of inflorescence development. This study aimed to identify the genes regulating floret development in wheat and barley. In wheat, the locus Grain Number Increase 1 (GNI1) has been identified as an important contributor to floret fertility. Mutants carrying an impaired GNI1 allele out-yielded WT allele plants under field conditions. In barley, it was revealed that extreme suppression of lateral florets by Vrs1.t allele contributes to enlarged grains. These results suggest that grain yield can be improved by DNA marker assisted selection using the identified genes.
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Academic Significance and Societal Importance of the Research Achievements |
本研究により、オオムギとコムギの収量性を向上させる穂形態を制御する遺伝子が明らかになった。地球規模の気候変動に伴う減収が懸念される中、収量性の向上は世界共通の課題である。単離した遺伝子はいずれも自然に存在する変異で長い年月をかけて選抜されたものである。今後この遺伝子を利用することで効率的な収量性の改善が期待できる。
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Report
(4 results)
Research Products
(22 results)
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[Journal Article] Unleashing floret fertility in wheat through the mutation of a homeobox gene2019
Author(s)
Sakuma, S., Golan, G., Guo, Z., Ogawa, T., Tagiri, A., Sugimoto, K., Bernhardt, N., Brassac, J., Mascher, M., Hensel, G., Ohnishi, S., Jinno, H., Yamashita, Y., Ayalon, I., Peleg, Z., Schnurbusch, T., Komatsuda, T.
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Journal Title
Proceedings of the National Academy of Sciences
Volume: 116
Issue: 11
Pages: 5182-5187
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Unleashing floret fertility by a mutated homeobox gene improved grain yield during wheat evolution under domestication2018
Author(s)
Sakuma, S., Golan, G., Guo, Z., Ogawa, T., Tagiri, A., Sugimoto, K., Bernhardt, N., Brassac, J., Mascher, M., Hensel, G., Ohnishi, S., Jinno, H., Yamashita, Y., Ayalon, I., Peleg, Z., Schnurbusch, T., Komatsuda, T.
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Journal Title
DOI
Related Report
Open Access / Int'l Joint Research
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[Presentation] コムギの稔実小花数増加による多収化2019
Author(s)
佐久間 俊, Guy Golan, Zifeng Guo, 小川 泰一, 田切 明美, 杉本 和彦, 大西 志全, 神野 裕信, 山下 陽子, Zvi Peleg, Thorsten Schnurbusch, 小松田 隆夫
Organizer
第135回日本育種学会講演会
Related Report
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