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| 1 | The Reference Genome Sequence of Scutellaria baicalensis Provides Insights into the Evolution of Wogonin Biosynthesis显示文摘Scutellaria baicalensis Georgi is important in Chinese traditional medicine where preparations of dried roots,'Huang Qin,' are used for liver and lung complaints and as complementary cancer treatments. We report a high-quality reference genome sequence for S. baicalensis where 93% of the 408.14-Mb genome has been assembled into nine pseudochromosomes with a super-N50 of 33.2 Mb. Comparison of this sequence with those of closely related species in the order Lamiales, sesamum indicum and Salvia splendens,revealed that a specialized metabolic pathway for the synthesis of 4'-deoxyflavone bioactives evolved in the genus Scu-tellaria. We found that the gene encoding a specific cinnamate coenzyme A ligase likely obtained its newfunc- tion following recent mutations, and that four genes encoding enzymes in the 4'-deoxyflavone pathway are present as tandem repeats in the genome of S. baicalensis. Further analyses revealed that gene duplications, segmental duplication, gene amplification, and point mutations coupled to gene neo- and subfunctionaliza-tions were involved in the evolution of 4'-deoxyflavone synthesis in the genus Scutellaria. Our study not only provides significant insight into the evolution of specific flavone biosynthetic pathways in the mint family, Lamiaceae, but also will facilitate the development of tools for enhancing bioactive productivity by metabolic engineering in microbes or by molecular breeding in plants. The reference genome of S. baicalensis is also useful for improving the genome assemblies for other members of the mint family and offers an important foundation for decoding the synthetic pathways of bioactive compounds in medicinal plants. | Qing Zhao Jun Yang Meng-Ying Cui Jie Liu Yumin Fang Mengxiao Yan Wenqing Qiu Huiwen Shang Zhicheng Xu Reheman Yidiresi Jing-Ke Weng Tomas Pluskal Marielle Vigouroux Burkhard Steuernagel Yukun Wei Lei Yang Yonghong Hu Xiao-Ya Chen Cathie Martin | 2019 | Molecular Plant2019,12,7: | 23 |
| 2 | Effect of Different Drying Processes on the Protein Degradation and Sensory Quality of Layú: A Chinese Dry-Curing Grass Carp显示文摘 | Jinjie Zhang Zhongxiang Fang Yumin Cao Yuting Xu Yaqin Hu Xingqian Ye Wenge Yang | 2013 | 2013 (13-1)2013,,13: | 1 |
| 3 | Effective Visible Emission from Porous Silicon显示文摘Concentration of Si-H_(2) bond in porous silicon layer(PSL)affects its photolu-minescence(PL)intensity and peak wavelength PL emission characters of PSL associate with not only its micro-structure,but also the Si-H_(2) band.So a stabilization of the emission intensity and the peak wavelength can be achieved by proper photochemical processing.A stable effective PL emission at wavelength as short as 570nm can be observed on PSL made by anodization method. | WENG Yumin FAN Zhineng ZONG Xiangfu | 1993 | Chinese Physics Letters1993,10,1: | 0 |
| 4 | Photoconductivity Characteristics of Porous Silicon显示文摘The highly photo-sensitive characteristics of porous silicon(PS)were observed.The transient behaviors of photoconductivity in horizontal and perpendicular directions of PS surface were very different,though both of them include two decay components.The photoconduction spectra at room temperature and 14.5K show that characteristics of PS are different from those of silicon substrate.The difference may be attributed to quantum confinement effect in nano-size microstructures of PS. | LIU Kaifeng WENG Yumin ZHU Lei WANG Shenyi ZONG Xiangfu | 1994 | Chinese Physics Letters1994,11,5: | 0 |
| 5 | Evidence of the Nano-sized Si Microstructure of Porous Si From Scanning Tunneling Microscopy显示文摘Scanning tunneling microscopy was used to observe the morphological feature of luminescent porous Si Results show that the surface of porous Si consists of randomly distributed nano-sized Si grains,which may be Si clusters.No clear interface was found between the grains.Its microstructure looks like a sponge.Visible photoluminescence in porous Si is most likely due to the carrier confinement in this microstructure. | WENG Yumin YANG Xinju CHEN Yufeng ZONG Xiangfu | 1994 | Chinese Physics Letters1994,11,6: | 0 |
| 6 | Thermal Conversion of Semi-insulating GaAs due to Gallium Vacancies and Anti-structure Disorders显示文摘Rapid thermal annealing induced acceptor levels and their annealing behavior in semi-insulating GaAs were investigated using the photoluminescence technique.Results suggest that the introduction of excess of Vg„and Gax»related acceptors might lead to thermal conversion of GaAs wafers. | WENG Yumin ZHENG Qingping FAN Zhineng ZONG Xiangfu | 1992 | Chinese Physics Letters1992,9,7: | 0 |
| 7 | Mapping the Uniformity of Deep Level Defects Distribution by Scanning Photoluminescence显示文摘Deep level defects in undoped semi-insulating GaAs were investigated by photo-luminescence technique at room temperature.The 0.69eV band is associated with the main mid-gap level EL2,and the 0.76eV band is suggested to be caused by some native point defects related to excess As,such as As anti-site defect.Two-dimensional and pseudo three-dimensional plots of the EL2 related band have been observed for as grown and annealed wafers. | WENG Yumin LIN Song ZONG Xiangfu | 1991 | Chinese Physics Letters1991,8,7: | 0 |
| 8 | Passivating Studies on a P_(2)S_(5)/NH_(4)OH-treated GaAs Surface Using Photoluminescence显示文摘We demonstrated that the photoluminescence intensity and its contrast obtained on liquid encapsulated Czochralski GaAs depend on the surface recombination and they are controlled by chemical surface treatments.We have successfully passivated the surface of GaAs wafer on the basis of P_(2)S_(5)/NH_(4) OH treatment. | WENG Yumin FAN Zhineng ZONG Xiangfu | 1992 | Chinese Physics Letters1992,9,5: | 0 |