2012 Fiscal Year Final Research Report
Dissection of molecular mechanisms governing embryo-endosperm ratio in Rice
| Project/Area Number |
23780002
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Breeding science
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
HIBARA Ken-ichiro 東京大学, 大学院・農学生命科学研究科, 助教 (10595713)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Keywords | イネ / 胚 / 胚乳 / 細胞死 / 胚サイズ / 発生 |
|---|
| Research Abstract |
I investigated the molecular mechanisms governing embryo-endosperm ratio using five rice mutants, which are defective in embryo size. I found that the major determinant for embryo-endosperm size balance exists in endosperm region especially in embryo facing region of endosperm (EFR) rather than embryo region. In addition, I found that the establishment of layer structure through cell death of endosperm cell in EFR contributes embryo-endosperm size control. Identification and expression studies of RE genes and GEgene showed that these genes are required for establishing the proper size balance.
|
-
[Journal Article] GIANT EMBRYO encodes CYP78A13, required for proper size balance between embryo and endosperm in rice.2013
Author(s)
Nagasawa, N., Hibara, K., Heppard E.P., Vander Velden., K.A., Luck, S., Beatty M., Nagato, Y.and Sakai H.
-
Journal Title
The Plant Journal
Volume: (in press)
Peer Reviewed
-
-
-
-
-
-
-
-
-
