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Rice Indeterminate 1 (OsId1) is necessary for the expression of Ehd1 (Early heading date 1) regardless of photoperiod
Abstract
Summary: Indeterminate 1 (Id1), a classical flowering gene first reported in 1946, is one of the earliest genes whose expression in leaf tissues affects the floral transition in the shoot meristem. How Id1 is integrated into the flowering process is largely unknown. In this study, we examined the genetic action of the rice (Oryza sativa) ortholog OsId1. In rice, OsId1 is preferentially expressed in young leaves, but the overall expression pattern is broader than that in maize (Zea mays). OsId1 is able to activate transcription in yeast. RNAi mutants show a delay in flowering under both short‐day (SD) and long‐day (LD) conditions. OsId1 regulates the expression of Ehd1 (Early heading date 1) and its downstream genes, including Hd3a (a rice ortholog of FT) and RFT1 (Rice Flowering Locus T1), under both SD and LD conditions. In rice, the expression of Ehd1 is also controlled by the photoperiodic flowering genes OsGI (a rice ortholog of GI) and OsMADS51. However, the expression of OsId1 is independent of OsGI, OsMADS51, and OsMADS50 (a rice SOC1 ortholog). This study demonstrates that the activation of Ehd1 by OsId1 is required for the promotion of flowering.
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Citations
Cites
Hd3a protein is a mobile flowering signal in rice
Tamaki, S., Matsuo, S., Wong, H. L., Yokoi, S., & Shimamoto, K. (2007) · Science · doi:10.1126/science.1141753 · Cited by 1,248
Cited by
DTH8 Suppresses Flowering in Rice, Influencing Plant Height and Yield Potential Simultaneously
Wei, X., Xu, J., Guo, H., Jiang, L., Chen, S., Yu, C., Zhou, Z., Hu, P., Zhai, H., & Wan, J. (2010) · Plant Physiology · doi:10.1104/pp.110.156943 · Cited by 567
A gene network for long-day flowering activates RFT1 encoding a mobile flowering signal in rice
Komiya, R., Yokoi, S., & Shimamoto, K. (2009) · Development · doi:10.1242/dev.040170 · Cited by 417
A dynamic gene expression atlas covering the entire life cycle of rice
Wang, L., Xie, W., Chen, Y., Tang, W., Yang, J., Ye, R., Liu, L., Lin, Y., Xu, C., Xiao, J., et al. (2010) · The Plant Journal · doi:10.1111/j.1365-313x.2009.04100.x · Cited by 353
The molecular biology of seasonal flowering-responses in Arabidopsis and the cereals
Greenup, A., Peacock, W. J., Dennis, E. S., & Trevaskis, B. (2009) · Annals of Botany · doi:10.1093/aob/mcp063 · Cited by 299
Higgins, J. A., Bailey, P. C., & Laurie, D. A. (2010) · PLoS ONE · doi:10.1371/journal.pone.0010065 · Cited by 280
Metadata
- Authors
- Park, S. J., Kim, S. L., Lee, S., Je, B. I., Piao, H. L., Park, S. H., Kim, C. M., Ryu, C., Park, S. H., Xuan, Y., Colasanti, J., An, G., & Han, C.
- Venue
- The Plant Journal
- Publisher
- Wiley
- Published
- 2008-12
- Volume
- 56
- Issue
- 6
- Pages
- 1018-1029
- ISSN
- 0960-7412 (ISSN-L)
- 1365-313X
- OpenAlex
- W2104277363
- Cited by
- 162
- References
- 1
- FWCI
- 9.64
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Park, S. J., Kim, S. L., Lee, S., Je, B. I., Piao, H. L., Park, S. H., Kim, C. M., Ryu, C., Park, S. H., Xuan, Y., Colasanti, J., An, G., & Han, C. (2008). Rice Indeterminate 1 (OsId1) is necessary for the expression of Ehd1 (Early heading date 1) regardless of photoperiod. The Plant Journal. https://doi.org/10.1111/j.1365-313x.2008.03667.x
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