Apr 6, 2020 · Taken together, these findings uncover a mechanism illustrating how SLs and BRs coordinately regulate rice tillering via the early responsive gene FC1. Keywords: D53; FC1; OsBZR1; brassinosteroids; rice; strigolactones; tillering.

Mar 27, 2023 · OsTB1/FC1 is considered to be an integrator of multiple signaling pathways to balance tillering in rice, as it is involved in SL as well as other hormonal signaling pathways (Fang et al., 2020; Guo et al., 2013; Minakuchi et al., 2010).

We propose that FC1 acts as an integrator of multiple signaling pathways and is essential to the fine-tuning of shoot branching in rice. Recent studies of highly branched mutants of pea, Arabidopsis and rice have demonstrated that strigolactones (SLs) act as hormones that inhibit shoot branching.

Dec 31, 2008 · In this study, we cloned the FLEXIBLE CULM1 (FC1) gene in rice using a T-DNA tagging approach. FC1 encodes a cinnamyl-alcohol dehydrogenase and is mainly expressed in the sclerenchyma cells of the secondary cell wall and vascular bundle region.

We also demonstrated that a rice strain carrying a classical morphological marker mutation, fine culm 1 (fc1), contain the loss-of-function mutation of OsTB1 and exhibits enhanced lateral branching.

Jun 14, 2010 · We found that the increased tillering phenotype of fine culm1 (fc1) mutants of rice is not rescued by the application of 1 μM GR24, a synthetic SL analog. Treatment with a high concentration of GR24 (10 μM) causes suppression of tiller growth in wild-type plants, but is not effective on fc1 mutants, implying that proper FC1 functioning is ...

Apr 23, 2021 · Rice genotypes harboring the fine culm1 (fc1) allele, a rice TB1 homolog, are unable to respond to SL application, suggesting that FC1 works downstream of SLs inhibit bud growth (Minakuchi et al. 2010).

Apr 6, 2020 · It is shown that SLs and BRs antagonistically regulate rice tillering by regulating FC1 expression in rice buds, which depends on the D53–OsBZR1 complex, and that OsBZR1 directly binds the FC1 promoter and recruits D53 to inhibit FC1 expression.

We propose that FC1 acts as an integrator of multiple signaling pathways and is essential to the fine-tuning of shoot branching in rice. 新近，通过对豌豆、拟南芥和水稻多分枝突变体的研究，揭示出独角金萌发内酯Strigolactones（SLs），作为一个新发现的植物激素，能够抑制侧生分支的发生。 为了回答SLs是究竟是如何控制侧芽生长的，就需要我们发现并鉴定SLs下游的基因。 本研究发现，当外施1uM的GR24（一种人工合成的SL类似物）并不能恢复水稻多分蘖突变体fine …

How the widely conserved branching inhibitor pathway and the grass-specific tb1 / FC1 pathway are integrated to control shoot architecture in rice remains to be determined. In this study, we characterize six branching mutants of rice: d3, d10, d14, d17, d27 and fc1.