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| 1 | Genomic and transcriptomic analysis unveils population evolution and development of pesticide resistance in fall armyworm Spodoptera frugiperda显示文摘The fall armyworm(FAW),Spodoptera frugiperda,is a destructive pest native to America and has recently become an invasive insect pest in China.Because of its rapid spread and great risks in China,understanding of FAW genetic background and pesticide resistance is urgent and essential to develop effective management strategies.Here,we assembled a chromosome-level genome of a male FAW(SFynMstLFR)and compared re-sequencing results of the populations from America,Africa,and China.Strain identification of 163 individuals collected from America,Africa and China showed that both C and R strains were found in the American pop-ulations,while only C strain was found in the Chinese and African populations.Moreover,population geno-mics analysis showed that populations from Africa and China have close relationship with significantly genetic differentiation from American populations.Taken toge-ther,FAWs invaded into China were most likely origi-nated from Africa.Comparative genomics analysis displayed that the cytochrome p450 gene family is extremely expanded to 425 members in FAW,of which 283 genes are specific to FAW.Treatments of Chinese populations with twenty-three pesticides showed the variant patterns of transcriptome profiles,and several detoxification genes such as AOX,UGT and GST spe-cially responded to the pesticides.These findings will be useful in developing effective strategies for manage-ment of FAW in China and other invaded areas. | Furong Gui Tianming Lan Yue Zhao Wei Guo Yang Dong Dongming Fang Huan Liu Haimeng Li Hongli Wang Ruoshi Hao Xiaofang Cheng Yahong Li Pengcheng Yang Sunil Kumar Sahu Yaping Chen Le Cheng Shuqi He Ping Liu Guangyi Fan Haorong Lu Guohai Hu Wei Dong Bin Chen Yuan Jiang Yongwei Zhang Hanhong Xu Fei Lin Bernard Slippers Alisa Postma Matthew Jackson Birhan Addisie Abate Kassahun Tesfaye Aschalew Lemma Demie Meseret Destaw Bayeleygne Dawit Tesfaye Degefu Feng Chen Paul K.Kuria Zachary M.Kinyua Tong-Xian Liu Huanming Yang Fangneng Huang Xin Liu Jun Sheng Le Kang | 2022 | Protein & Cell2022，13，7： | 2 |
| 2 | Observation of directional change of core field inside flux ropes within one reconnection diffusion region in the Earth's magnetotail显示文摘Two consecutive magnetic flux ropes, separated by less than 30 s(Dt \ 30 s), are observed within one magnetic reconnection diffusion region without strong guide field in the Earth's magnetotail by Cluster multispacecraft. The flux ropes are characterized by bipolar signatures of the south–north magnetic field component Bz accompanied with strong core magnetic field By, intense current J and density depletions inside of them. In spite of the small but non-trivial global scale negative guide field(–By), there exists a directional change of the core fields of two flux ropes, i.e.,-Byfor the first one, and Byfor the second one. The directions of the core fields are the same as the ambient cross-tail magnetic field component(By) just outside of flux ropes. Therefore, we suggest that the core field of flux ropes is formed by compression of the local preexisting Byand that the directional change of core field is due to the change of local preexisting By. Such a change in ambient Bymight be caused by some microscale physics. | Shiyong Huang Ye Pang Zhigang Yuan Xiaohua Deng Jiansen He Meng Zhou Huishan Fu Song Fu Huimin Li Dedong Wang Haimeng Li | 2014 | Chinese Science Bulletin2014，59，34： | 1 |
| 3 | Oxygen cyclotron harmonic waves observed using Van Allen Probes显示文摘Fine structured multiple-harmonic electromagnetic emissions at frequencies around the equatorial oxygen cyclotron harmonics are observed by Van Allen Probe A outside the core plasmasphere(L^5) off the magnetic equator(MLAT~.7.5°)during a geomagnetic storm. We find that the multiple-harmonic emissions have power spectrum density(PSD) peaks during 2–8equatorial oxygen gyroharmonics( f ~ n fO+, n=2–8), while the fundamental mode(n=1) is absent, implying that the harmonic waves are generated near the equator and propagate into the observation region. Additionally, these electromagnetic emissions are linearly polarized. Different from the equatorial noise emission that propagates considerably obliquely, these emissions have moderate wave normal angles(approximately 40°–60°), which predominately increase as the harmonic number increases.Considering their frequency and wave normal angle characteristics, it is suggested that these multiple-harmonic emissions play an important role in the dynamic variation of radiation belt electrons. | YU XiongDong YUAN ZhiGang WANG DeDong HUANG ShiYong LI HaiMeng YU Tao QIAO Zheng | 2017 | Science China Earth Sciences2017，60，7： | 1 |
| 4 | An improved SOI trench LDMOST with double vertical high-k insulator pillars显示文摘An SOI trench LDMOST(TLDMOST)with ultra-low specific on-resistanceis proposed.It features double vertical high-k insulator pillars(Hk_1 and Hk_2)in the oxide trench,which are connected to the source electrode and drain electrode,respectively.Firstly,under reverse bias voltage,most electric displacement lines produced by the charges of the depleted drift region in the source side go through the Hk_1,and thus the average electric field strength under the source can be enhanced.Secondly,two additional electric field peaks are induced by the Hk_1,which further modulate the electric field in the drift region under the source.Thirdly,most electric displacement lines produced by the charges of the depleted drift region in the drain side enter into the Hk_2.This not only introduces one more electric field peak at the corner of the oxide trench around the Hk_2,but also forms the enhanced vertical reduced surface field effect,which modulates the electric field in the drift region under the drain.With the effects of the two Hk insulator pillars,the breakdown voltage(BV)and the drift region doping concentration are significantly improved.The simulation results indicate that compared with the oxide trench LDMOST(previous TLDMOST)with the same geometry,the proposed double Hk TLDMOST enhances the BV by 86%and reduces theby 88%. | Huan Li Haimeng Huang Xingbi Chen | 2018 | Journal of Semiconductors2018，39，9： | 0 |
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