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| 1 | Isolation and characterization of rl_(t), a gene that controls leaf rolling in rice显示文摘Moderate leaf rolling is one of the most important morphological traits in rice breeding for plant ideotype.Previous studies have shown that the rl(t)gene has a high breeding potential for developing hybrid-rice varieties with an ideal ideotype,because it leads to an appropriate leaf rolling index(LRI)of about 30%in the heterozygous state,and had a positive effect on grain yield.In this study,we isolated rl(t)and performed a preliminary investigation of its function in regulating leaf rolling in rice.DNA sequencing identified a single base change(G to T)in the finely mapped region(11 kb)containing rl(t),and this is located in 30-untranslated region(30-UTR)of the only predicted gene,Roc5(Rice outermost cell-specific).The expression level of Roc5 is significantly higher in the rl(t)mutant than in the wild-type.Using RNAi and overexpression analysis,we found that the expression level of Roc5 correlated with LRI and leaf bulliform area,and wasalso associated with leaf abaxial or adaxial rolling.These results confirmed that Roc5 controls leaf rolling in a dosage-dependent manner.Bioinformatics analysis revealed a conserved 17-nt sequence(called the GU-rich element)in the 30-UTR of HD-GL2(Homeodomain-Glabra2)family genes including Roc5.Based on the model of this element in regulating mRNA stability in mammals,we speculate that the single nucleotide change in this element accounts for the higher expression level of Roc5 in the rl(t)mutant compared to the wild-type,which ultimately leads to adaxial rolling of the leaf.This discovery further enhances our knowledge of the molecular mechanisms underlying leaf rolling in rice. | Lei Li Xiang Xue Zongxiang Chen Yafang Zhang Yuyin Ma Cunhong Pan Junkai Zhu Xuebiao Pan Shimin Zuo | 2014 | Chinese Science Bulletin2014，59，25： | 4 |
| 2 | LA-ICP-MS U–Pb geochronology of detrital zircons from the Zhaochigou Formation-complex in the Helan Mountain and its tectonic significance显示文摘This paper carries out studies about LA-ICPMS U–Pb dating and Hf isotopic compositional analysis for detrital zircons in two metasedimentary samples that were taken from the Zhaochigou Formation-complex in the Helan Mountain.The results show that the Zhaochigou Formation-complex formed*1.96 Ga,and it is a part of the Khondalite Series that is widespread in the North China Craton(NCC).The age spectrum of the detrital zircons indicates that the Zhaochigou Formation-complex shared the same provenance with the eastern edge of the Khondalite Series.Products of ancient magmatic activities within the Khondalite Belt may be the major source for the sedimentary materials that formed the Khondalite Series.Our age-dating results suggest that the Khondalite Series in the NCC may have experienced two stages of metamorphism,as the early stage occurred during 1.96–1.95 Ga,and the later stage occurred at about 1.87 Ga.The Hfisotopic data indicate that the Western Block of the NCC endured a stage of crustal growth at 2.5–2.3 Ga. | Liming Li Zuoxun Zeng Yanjun Lu Yunxu Wei Shimin Xiang Lili Pan | 2014 | Chinese Science Bulletin2014，59，13： | 3 |
| 3 | Synthesis of N,N-diallyl dibenzo 18-crown-6-crown ether crosslinked chitosail and their adsorption properties for metal ions显示文摘 | Shimin D Xue Y Z Xiang H F | 2006 | Reactive & Functional Polymers2006，66，： | 1 |
| 4 | Genome Characterization of COVID-19 Lineage B.1.1.7 Detected in the First Six Patients of a Cluster Outbreak——Shenzhen City,Guangdong Province,China,May 2021显示文摘Screening for coronavirus disease 2019(COVID-19)virus,also known as SARS-CoV-2,infection every seven days was performed for high-risk populations who worked at the Yantian Port in Yantian District,Shenzhen City,Guangdong Province.On May 20,2021,an oropharyngeal swab from a 44-year-old male(Case A)tested preliminarily positive for COVID-19 by a quantitative real-time reverse transcription polymerase chain reaction(RT-qPCR)method in a third-party laboratory. | Yaqing He Peihua Niu Bo Peng Ying Sun Ziquan Lyu Renli Zhang Xiang Zhao Yang Song Yenan Feng Xiujuan Tang Dongfeng Kong Xinyi Wei Can Zhu Qingju Lu Shimin Li Xiaoliang Xiao Weiwen Liu Junjia He Junjie Xia Long Chen Xuan Zou Tiejian Feng | 2021 | China CDC weekly2021，3，25： | 0 |
| 5 | Overshoot phenomena:Observation and simulation显示文摘High-power O-mode radio waves can excite artificial instabilities in the F region,according to experiments conducted at the European Incoherent Scatter Science Association(EISCAT)heating facility.The main instabilities include the parametric decay instability(PDI),oscillating two-stream instability(OTSI),and thermal parametric instability(TPI).The PDI and OTSI not only compete with each other,but also compete with the TPI,leading to a two-stage overshoot phenomenon:a miniovershoot occurs on a millisecond time scale after pump-on,followed by the main overshoot.We gain insight into the miniovershoot via a generalized Zakharov model,whereas the main overshoot can be observed as an enhanced plasma line overshoot phenomenon in incoherent scatter radar spectra.We can also observe that the zero-frequency ion line exists only in the initial heating period after a cold start and that the upshifted and downshifted ion lines behave irregularly in the spectra.The simulation results show that competition between the PDI and OTSI leads to an initial peak,which we named the pre-miniovershoot.The following processes,namely ion density caviton generation,and collapse and cascade in the development of the PDI,contribute to the miniovershoot phenomenon. | Ting Feng MoRan Liu ShiMin He Xiang Wang Chen Zhou | 2024 | Earth and Planetary Physics2024，8，2： | 0 |
| 6 | Microporous Nitrogen-Rich Polymers via Ullmann Coupling Reaction for Selective Adsorption of C_(2)H_(2) over CH_(4)显示文摘Acetylene purification from methane is challenging in the field of porous organic polymers(POPs).Herein,we have provided one-pot Ullmann coupling reaction to synthesize a series of POPs with rich N-sites,named FJU-POP-n,wherein the low-cost and non-toxic Cu(acac)2 and environmental-friendly glycerol are employed as catalyst and solvent,respectively. | Jitao Huang Qinfang Peng Chulong Liu Yingxiang Ye Liangji Chen Yuanchao Lv Yisi Yang Shimin Chen Fahui Xiang Hao Zhang Zhangjing Zhang Shengchang Xiang | 2023 | Chinese Journal of Chemistry2023，41，5： | 0 |
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