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第十四届全国植物基因组学大会

作者： Li Deng Yong Qiu Guoxing Chen Xianghua Li Changyin Wu National Key Laboratory of Crop Genetic Improvement National Center of Plant Gene Research(Wuhan)Huazhong Agricultural University

The transition of the shoot apical meristem(SAM) from vegetative to reproductive growth is a critical developmental switch in plants that is regulated by both environmental and endogenous ***,we identified a rice flow... 详细信息

关键词： rice(Oryza sativa L.) flowering transition RID1 suppressor of rid1(sid1)

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BBX7 interacts with BBX8 to accelerate flowering in chrysanthemum

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Molecular Horticulture 2023年第1期3卷 306-318页

作者： Yiwen Zhai Yuqing Zhu Qi Wang Guohui Wang Yao Yu Lijun Wang Tao Liu Shenhui Liu Qian Hu Sumei Chen Fadi Chen Jiafu Jiang National Key Laboratory of Crop Genetics&Germplasm Enhancement and Utilization Key Laboratory of LandscapingMinistry of Agriculture and Rural AffairsKey Laboratory of Biology of Ornamental Plants in East ChinaNational Forestry and Grassland AdministrationZhongshan Biological Breeding LaboratoryCollege of HorticultureNanjing Agricultural UniversityNanjing 210095China

The quantitative control of flowering LOCUS T(FT)activation is important for the floral transition in flowering ***,the flowering regulation mechanisms in the day-neutral,summer-flowering chrysanthemum plant remain *** this study,the chrysanthemum BBX7 homolog CmBBX7 was isolated and its flowering function was *** expression of CmBBX7 showed a diurnal rhythm and CmBBX7 exhibited higher expression levels than *** of CmBBX7 in transgenic chrysanthemum accelerated flowering,whereas lines transfected with a chimeric repressor(pSRDX-CmBBX7)exhibited delayed *** single hybridization,luciferase,electrophoretic mobility shift,and chromatin immunoprecipitation assays showed that CmBBX7 directly targets *** addition,we found that CmBBX7 and CmBBX8 interact to positively regulate the expression of CmFTL1 through binding to its ***,these results highlight CmBBX7 as a key cooperator in the BBX8–FT module to control chrysanthemum flowering.

关键词： BBX family Diurnal rhythm CmFTL1 Photoperiod flowering transition

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SDG724 mediates H3K36me2/3 deposition at MADS50 and RFT1,and promotes flowering in rice

SDG724 mediates H3K36me2/3 deposition at MADS50 and RFT1,and...

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从植物科学到农业发展——2012全国植物生物学大会

作者： Changhui Sun,Jun Fang,Taolan Zhao,Bo Xu,Fantao Zhang,Linchuan Liu,Jiuyou Tang, Xiaojian Deng,Fan Chen,Qian Qian,Xiaofeng Cao,Chengcai Chu Institute of Genetics and Developmental Biology,Chinese Academy of Sciences,Beijing 100101,China.

Chromatin modifications are known to affect flowering time in the long-day(LD) plant ***,the role of histone methylation in flowering time regulation of rice, a short-day(SD) plant,remains to be *** identified a late-flowering long vegetative phase 1(lvp1) mutant in rice,and map-based cloning revealed that LVP1 encodes the SET domain group protein 724(SDG724).Biochemical characterization showed that SDG724 is an active histone methyltransferase in vitro and contributes to a major fraction of global H3K36 methylation in *** analyses of flowering time genes in wild-type and lvp1 mutants revealed that Ehd1,but not Hd1,are misregulated in SDG724 loss of function mutants to promote flowering under both SD and LD conditions. In addition,the lvp1 se5 double mutant flowered later than the se5 single mutant,indicating that lesions in SDG724 delay flowering time irrespective of *** assays showed that Ivp1 had reduced levels of H3K36me2/3 within certain chromatin regions of Os MADS50 and *** suggests that the divergent functions of paralogs RFT1 and Hd3a,and of Os MADS50 and MADS51 are in part due to differential H3K36me2/3 deposition,which also correlates with higher expression levels of Os MADS50 and RFT1 in flowering promotion of rice.

关键词： rice flowering transition histone methyltransferase H3K36 methylation florigen

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