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| 1 | Hd1,Ghd7,and DTH8 synergistically determine the rice heading date and yield-related agronomic traits显示文摘Heading date determines the seasonal and regional adaptation of rice(Oryza sativa L.)varieties and is mainly controlled by photoperiod sensitivity(PS).The core heading date genes Hd1,Ghd7,DTH8,and PRR37 act synergistically in regulating the PS.In this study,we systematically analyze the heading date,PS,and agronomic traits of eight homozygous lines with various combinations of Hd1,Ghd7,and DTH8 alleles in the prr37 background under long-day(LD)and short-day(SD)conditions,respectively.We find that Hd1 alone promotes heading,regardless of the day length.However,under LDs,Hd1 suppresses flowering,in coordination with functional Ghd7 or with Ghd7 and DTH8.These loci cooperate to negatively regulate the Ehd1-Hd3 a/RFT1 pathway and delay heading.Under SDs,Hd1 competes with various heading suppressors to promote heading.Therefore,the dual function of Hd1 is vital for PS.The lines carrying Hd1 alone show reduced plant height with fewer primary and secondary branches in panicles.Lines carrying Ghd7 and DTH8(with hd1)show delayed heading and improve agronomic traits.Overall,our results reveal the regulation of rice PS flowering by the core heading date genes and their effects on agronomic traits,providing valuable information for the selection of rice varieties for adaptation to different light and temperature conditions. | Kangli Sun Minghui Huang Wubei Zong Dongdong Xiao Chen Lei Yanqiu Luo Yingang Song Shengting Li Yu Hao Wanni Luo Bingqun Xu Xiaotong Guo Guangliang Wei Letian Chen Yao-Guang Liu Jingxin Guo | 2022 | Journal of Genetics and Genomics2022，49，5： | 4 |
| 2 | Mechanism and rate constants for complete series reactions of 19 fluorophenols with atomic H显示文摘Fluorine-containing halogenated fluorophenol may have efect as intermediate species involved in the formation of polyfluorinated dibenzo-p-dioxin/dibenzofurans(PFDDs/Fs). The mechanism for the atomic H initiated reactions with complete series of nineteen fluorophenol congeners was studies using the density functional theory. At the MPWB1K/6-31+G(d,p) level, the geometries and frequencies of reactants, transition states, and products were obtained, and the accurate energetic values were acquired at the MPWB1K/6-311+G(3df,2p) level. The rate constants were evaluated by the canonical variational transition-state theory with the small curvature tunneling contribution over a wide temperature range of 600–1000 K. The study shows that the intramolecular hydrogen-bond in the ortho-substituted FPs as well as the inductive efect of the electron-withdrawing fluorine and steric repulsion of multiple substitutions may ultimately be responsible for the relative strength of the O–H bonds in FPs. The results can be used for further studies on PFDD/Fs formation mechanism. | Rui Gao Xiaoyan Sun Wanni Yu Qingzhu Zhang Wenxing Wang | 2014 | Journal of Environmental Sciences2014，26，1： | 1 |
| 3 | Mechanism and direct kinetics study on the homogeneous gas-phase formation of PBDD/Fs from 2- BP, 2,4-DBP, and 2,4,6-TBP as precursors 显示文摘 | Yu Wanni Hu Jingtian Xu Fei | 2011 | Environ Sci Technol2011，45，： | 1 |
| 4 | Dioxin formations from the radical/radical cross-condensation of phenoxy radicals with 2-chlorophenoxy radicals and 2,4,6-trichlorophenoxy radicals 显示文摘 | Xu Fei Yu Wanni Gao Rui | 2010 | Environmental Science and Technology2010，44，： | 1 |
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