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- Title
Conservation and diversification of QTGs involved in photoperiodic flowering between rice and Arabidopsis.
- Authors
Matsubara, Kazuki; Hori, Kiyosumi; Ogiso-Tanaka, Eri; Yano, Masahiro
- Abstract
Flowering time in rice (Oryza sativa L.) is determined primarily by daylength (photoperiod), and natural variation in flowering time is due to quantitative trait loci involved in photoperiodic flowering. To date, genetic analysis of natural variants in rice flowering time has resulted in the positional cloning of at least 12 quantitative trait genes (QTGs), including our recently cloned QTGs, Hd17 and Hd16. The QTGs have been assigned to specific photoperiodic flowering pathways. Among them, 9 have homologs in the Arabidopsis genome, whereas it was evident that there are differences in the pathways between rice and Arabidopsis, such that the rice Ghd7-Ehd1-Hd3a/RFT1 pathway modulated by Hd16 is not present in Arabidopsis. In this review, we describe QTGs underlying natural variation in rice flowering time. Additionally, we discuss the implications of the variation in adaptive divergence and its importance in rice breeding.
- Subjects
PHOTOPERIODISM; PLANTS; FLOWERING of plants; PLANT phenology; PLANT genes; PLANT genetics; RICE; ARABIDOPSIS
- Publication
Frontiers in Plant Science, 2014, Vol 5, p1
- ISSN
1664-462X
- Publication type
Article
- DOI
10.3389/fpls.2014.00193