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Effects of Different Light Qualities on the Growth Characteristics of Populus trinervis

Phyton-International Journal of Experimental Botany 2024年第5期93卷 1043-1056页

作者： Jiaqi Li Zhensheng Qiao Dan Zong Chengzhong He Key Laboratory for Forest genetics and Tree Improvement and Propagation in Universities of Yunnan Province Southwest Forestry UniversityKunmingChina Key Laboratory of Biodiversity Conservation in Southwest China State Forestry AdministrationSouthwest Forestry UniversityKunmingChina Key Laboratory for Forestry Resources Conservation and Utilization in the Southwest Mountains of China Ministry of EducationSouthwest Forestry UniversityKunmingChina

Populus trinervis is native to China and plays an irreplaceable role in maintaining the ecological balance of boreal and temperate *** mainly grows in high-altitude *** present,there are limited studies on the response of *** to different light qualities,so it is necessary to investigate the photosynthetic physiological changes of *** in different light *** our study,*** was grown for 8 months under light filtered by three different colored *** three treatments were blue film,green film,and white plastic *** effects of blue(B),green(G),and white(W)light on photosynthetic pigment content,absolute growth,photosynthetic parameters,soluble sugar content,and chlorophyll fluorescence parameters were studied,*** to the Wtreatment,the chlorophyll a and b,carotenoids,total chlorophyll content(a+b),absolute growth of seedling height,net photosynthetic rate(PN),water use efficiency(WUE),total soluble sugars,sucrose,and nonphotochemical quenching(NPQ)of *** were significantly increased under B ***,chlorophyll a and b,carotenoids,total chlorophyll(a+b),transpiration rate(Tr),intercellular CO_(2) concentration(Ci),stomatal conductance(gs),absolute growth of seedling height and leaf length,reducing sugar,total soluble sugar content,and NPQ were significantly increased under G *** results showed that the absolute growth and chlorophyll content of *** were increased under B light,while the sugar and photosynthetic parameters were increased under G *** studies may look into how B light impacts absolute growth and promotional mechanisms,as well as how G light affects the accumulation of sugar levels.

关键词： Blue light green light white light photosynthetic pigment soluble sugar

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Emerging bedaquiline resistance:A threat to the global fight against drug-resistant tuberculosis

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Journal of Biosafety and Biosecurity 2024年第1期6卷 13-15页

作者： Prakasini Satapathy Ramaiah Itumall Ahmad Neyazi Abdul Mobin Nabizai Taraki Mahalaqua Nazli Khatib Shilpa Gaidhane Quazi Syed Zahiruddin Sarvesh Rustagi Mehrab Neyazi Center for Global Health Research Saveetha Medical College and HospitalSaveetha Institute of Medical and Technical SciencesSaveetha UniversityChennaiIndia Medical Laboratories Techniques Department AL-Mustaqbal University51001 HillahBabilIraq School of Management The Apollo UniversityChittoorAndhra Pradesh 517127India Afghanistan Center for Epidemiological Studies Afghanistan division of Evidence Synthesis Global Consortium of Public Health and ResearchDatta Meghe Institute of Higher EducationWardhaIndia One Health Centre(COHERD) Jawaharlal Nehru Medical CollegeDatta Meghe Institute of Higher EducationWardhaIndia South Asia Infant Feeding Research Network(SAIFRN) Division of Evidence SynthesisGlobal Consortium of Public Health and ResearchDatta Meghe Institute of Higher EducationWardhaIndia School of applied and Life Sciences Uttaranchal UniversityDehradunUttarakhandIndia

Bedaquiline resistance is increasingly observed in the treatment of rifampicin-resistant tuberculosis(TB),yet standardized regimens for managing bedaquiline-resistant TB are *** indicate a high proportion of bedaquiline-resistant cases have previously been treated for TB,and often involve strains resistant to *** monitoring of the culture status in patients receiving bedaquiline resistance treatment is *** such as experimental evolution,protein modeling,genome sequencing,and phenotypic analysis have been instrumental in identifying the mechanisms of bedaquiline ***,variants in the Rv0678 transcriptional repressor of the MmpS5-MmpL5 efflux system are linked to this type of *** probability estimates show promise in determining the genotypic–phenotypic association for bedaquiline resistance,suggesting potential utility in clinical *** research should explore the practical application of Bayesian probabilities in managing bedaquiline ***-based technologies are anticipated to play a vital role in the early detection and management of drug-resistant TB strains.

关键词： Bedaquiline Resistance Drug-Resistant Tuberculosis Quinolone Resistance

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Circular polarization-selective optical,photothermal,and optofluidic effects in chiral metasurfaces

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Photonics Research 2024年第2期12卷 331-340页

作者： CUIPING MA PENG YU ZHIMIN JING YISONG ZHU PEIHANG LI WENHAO WANG HONGXING XU YANNING ZHANG LIANG PAN TAE-YOUL CHOI ARUP NEOGI ALEXANDER OGOVOROV ZHIMING WANG Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China division of Physics and applied Physics School of Physical and Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore School of Physics and Technology Center for Nanoscience and NanotechnologyWuhan UniversityWuhan 430072China Department of Mechanical Engineering University of North TexasDentonTexas 76207USA Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute Ohio UniversityAthensOhio 45701USA

Circular dichroism (CD) is extensively used in various material systems for applications including biological detection,enantioselective catalysis,and chiral *** paper introduces a chiral absorptive metasurface that exhibits a circular polarization-selective effect in dual bands-positive and negative CD peaks at short wavelengths and long wavelengths,***,we uncover that this phenomenon extends beyond the far-field optical response,as it is also observed in the photothermal effect and the dynamics of thermally induced fluid *** carefully engineering the metasurface design,we achieve two distinct CD signals with high g factors (1) at the wavelengths of 877 nm and 1045 nm,*** findings presented in this study advance our comprehension of CD and offer promising prospects for enhancing chiral light–matter interactions in the domains of nanophotonics and optofluidics.

关键词： chiral catalysis circular

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Optimizing the Bacillus thuringiensis(Bt)protein concentration in cotton:Coordinated application of exogenous amino acids and EDTA to reduce spatiotemporal variability in boll and leaf toxins

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Journal of Integrative Agriculture 2024年第10期23卷 3419-3436页

作者： Zhenyu Liu Shu Dong Yuting Liu Hanjia Li Fuqin Zhou Junfeng Ding Zixu Zhao Yinglong Chen Xiang Zhang Yuan Chen Dehua Chen Jiangsu Key Laboratory of Crop genetics and Physiology/Co-Innovation Center for Modern Production Technology of GrainCrops Yangzhou UniversityYangzhou 225009China The UWA Institute of Agriculture School of Agriculture and EnvironmentThe University of Western AustraliaPerth 6009WAAustralia

During the boll formation stage,cotton bolls exhibit the lowest expression of Bacillus thuringiensis(Bt)insecticidal *** to insects varies notably among different organs,which poses challenges for controlling cotton ***,an experimental strategy was designed in the 2020-2021 cotton growing season to coordinate the enhancement of protein synthesis and the attenuation of *** Bt cultivars of Gossypium hirsutum,namely the hybrid Sikang 3 and the conventional Sikang 1,were used as test *** treatments were applied at the peak flowering period:CK(the control),T1(amino acids),and T2(amino acids and EDTA).The results show that,in comparison to the CK group,the Bt protein contents were significantly increased in both cotton bolls and their subtending leaves under the T1 and T2 *** maximum levels of increase observed were 67.5%in cotton bolls and 21.7%in ***,the disparity in Bt protein content between cotton bolls and their subtending leaves notably decreased by 31.2%.Correlation analysis suggested that the primary physiological mechanisms for augmenting Bt protein content involve increased protein synthesis and reduced protein catabolism,which are independent of Bt gene expression *** regression and path analysis revealed that elevating the soluble protein content and transaminase activity,while reducing the catabolic enzyme activities,are instrumental in enhancing the Bt protein ***,the coordinated application of amino acids and EDTA emerges as a strategy that can improve the overall resistance of Bt cotton and mitigate the spatiotemporal variations in Bt toxin concentrations in both cotton bolls and leaves.

关键词： Gossypium hirsutum Bt cotton insecticidal protein bolls and their subtending leaves nitrogen metabolism

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CHEMICAL SYNTHESIS AND CLONING OF SECRETIN GENE

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Science China Chemistry 1988年第6期31卷 687-694页

作者：钱苏雯陈常庆李载平 Academia Sinica division of Molecular genetics Shanghai Institute of Biochemistry

A DNA duplex coding for the 27 amino acids of secretin has been synthesized and cloned. Indesigning the sequence of the gene, computer analysis has been applied. The following factors have beenconsidered: selection of codon usage in favour of expression in yeast; design of various sites useful ingene cloning, gene modification and expressed product purification; avoiding the repeat sequences whichmay interfere in the ligation of the synthetic fragments. The synthesis involved preparation of 12 oligo-deoxyribonucleotides (12-mer to 24-mer in length) by phosphate triester and phosphite triester method,purification by polyacrylamide gel electrophoresis (PAGE). A new plasmid pWS1 was constructed by inser-tion of the enzymatic ligated gene fragment into plasmid pWR13.

关键词： gene CHEMICAL SYNTHESIS AND CLONING OF SECRETIN GENE OC

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Evolution of the rare earth trade network:A perspective of dependency and competition

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Geoscience Frontiers 2024年第3期15卷 183-191页

作者： Jilan Xu Jiahao Li Vincent Charles Xin Zhao School of Urban and Regional Science Shanghai University of Finance and EconomicsShanghai 200433China School of Business East China University of Science and TechnologyShanghai 200237China School of Management University of BradfordBradford BD71DPUnited Kingdom School of Statistics and applied Mathematics Anhui University of Finance and EconomicsBengbu 233030China

As a global strategic reserve resource,rare earth has been widely used in important industries,such as military equipment and ***,existing analyses based solely on the total volume of rare earth trade fail to uncover the underlying competition and dependency *** address this gap,this paper employs the principles of trade preference and import similarity to construct dependency and competition *** network analysis is then employed to study the evolution of the global rare earth trade network from 2002 to *** main conclusions are as *** global rare earth trade follows the Pareto principle,and the trade network shows a scale-free *** has emerged as the world’s largest importer and exporter of rare earth since *** the dependency network,China has become the most dependent country since *** result of community division shows that China has separated from the American community and formed new communities with the Association of Southeast Asian Nations(ASEAN)*** United States of America has formed a super-strong community with European and Asian *** the competition network,the distribution of competition intensity follows a scale-free *** countries face low-intensity competition,but there are numerous competing *** competition related to China has increased ***,the competition source for the United States of America has shifted from Mexico to China,resulting in China,the USA,and Japan becoming the core participants in the competition network.

关键词： Rare earth Trade network Dependency Competition Complex network analysis

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Diet and epigenetics in colon cancer

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World Journal of Gastroenterology 2009年第3期15卷 257-263页

作者： Minna Nystrm Marja Mutanen Department of Biological and Environmental Sciences GeneticsUniversity of HelsinkiFI-00014 HelsinkiFinland Department of applied Chemistry and Microbiology Division of NutritionUniversity of HelsinkiFI-00014 HelsinkiFinland

Over the past few years, evidence has accumulated indicating that apart from genetic alterations, epigenetic alterations, through e.g. aberrant promoter methylation, play a major role in the initiation and progression of colorectal cancer (CRC). Even in the hereditary colon cancer syndromes, in which the susceptibility is inherited dominantly, cancer develops only as the result of the progressive accumulation of genetic and epigenetic alterations. Diet can both prevent and induce colon carcinogenesis, for instance, through epigenetic changes, which regulate the homeostasis of the intestinal mucosa. Food-derived compounds are constantly present in the intestine and may shift cellular balance toward harmful outcomes, such as increased susceptibility to mutations. There is strong evidence that a major component of cancer risk may involve epigenetic changes in normal cells that increase the probability of cancer after genetic mutation. The recognition of epigenetic changes as a driving force in colorectal neoplasia would open new areas of research in disease epidemiology, risk assessment, and treatment, especially in mutation carriers who already have an inherited predisposition to cancer.

关键词： Colon cancer Diet DNA methylation Epigenetics Nutrition

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Comparative Assessment of Impacts of Future Climate Change on Runoff in Upper Daqinghe Basin,China

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Chinese Geographical Science 2024年第3期34卷 564-578页

作者： INGABIRE Romaine CHANG Yuru LIU Xia CAO Bo UMUGWANEZA Adeline SHEN Yanjun Key Laboratory of Agricultural Water Resources Hebei-Key Laboratory of Water Saving AgricultureCenter for Agricultural Re-sources ResearchInstitute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050022China Uni-versity of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Desert and Oasis Ecology Xinjiang Insti-tute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China

Assessing runoff changes is of great importance especially its responses to the projected future climate change on local scale basins because such analyses are generally done on global and regional scales which may lead to generalized conclusions rather than specific *** change affected the runoff variation in the past in the upper Daqinghe Basin,however,the climate was mainly considered uncertain and still needs further studies,especially its future impacts on runoff for better water resources management and *** with a set of climate simulations,a daily conceptual hydrological model(MIKE11-NAM)was applied to assess the impact of climate change on runoff conditions in the Daomaguan,Fuping and Zijingguan basins in the upper Daqinghe *** hydrological data(2008–2017)were used to evaluate the applicability of the MIKE11-NAM *** bias correction,future projected climate change and its impacts on runoff(2025–2054)were analysed and compared to the baseline period(1985–2014)under three shared social economic pathways(SSP1-2.6,SSP2-4.5,and SSP5-8.5)scenarios from Coupled Model Intercomparison Project Phase 6(CMIP6)*** MIKE-11 NAM model was applicable in all three Basins,with both R^(2)and Nash-Sutcliffe Efficiency coefficients greater than 0.6 at daily scale for both calibration(2009–2011)and validation(2012–2017)periods,*** uncertainties remain,temperature and precipitation are projected to increase compared to the baseline where higher increases in precipitation and temperature are projected to occur under SSP2-4.5 and SSP5-8.5 scenarios,respectively in all the *** changes will range between 12%–19%whereas temperature change will be 2.0℃–2.5℃ under the SSP2-4.5 and SSP5-8.5 scenarios,*** addition,higher warming is projected to occur in colder months than in warmer ***,the runoff of these three basins is projected to respond to projected climate changes differe

关键词： runoff climate change MIKE11-NAM model Coupled Model Intercomparison Project Phase 6(CMIP6) upper Daqinghe Basin,China

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Variability in cone,seed and seedling characteristics of Pinus kesiya Royle ***

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Journal of Forestry Research 2015年第2期26卷 331-337页

作者： Ombir Singh Satyam Bordoloi N.Mahanta Forest Tree Seed Laboratory Silviculture DivisionForest Research Institute Biotechnology and genetics division Rain Forest Research Institute

Investigations were made to determine the nature and extent of variations present for 10 morphological characters of cone,seed and seedlings of 17 plus trees（PTs）of Pinus kesiya growing in eastern Himalayas（Meghalaya state） of *** significant variations has been observed in cone weight,cone length,cone diameter,seed length,seed diameter,seed weight,number of seeds per cone,seed germination,seedling height and seedling collar diameter among different PTs of the *** positive correlation（p ／ 0.01） between seed weight,cone length and cone diameter showed that seed weight in *** depend more on the cone *** germination is found positively correlated（p ／ 0.01） with seed weight,seed diameter,cone size and number of seeds per cone in the *** geographical factors,latitude and altitude are found positively correlated（p ／ 0.05） with cone weight and seed diameter,*** genetic parameters for seed,cone and seedlings of PTs of *** also showed a wide range of variability in terms of variance,coefficient of variability,broad sense heritability,genetic advance and genetic *** weight,seeds per cone and seedling diameter showed high heritability values（[75） coupled with maximum genetic *** with such values indicate the presence of good amount of heritable additive components and are under strong genetic *** findings of the study revealed that PTs expressed both phenotypic and genotypic differences in the seed,cone and seedling characters,which may be attributed to the differences in genetic makeup of various PTs and environmental factors *** and environmental *** presence of high variability in *** PTs for different characters provide further opportunities to improve the population in subsequent generations so as to establish this species as an important timber tree to be grown on less fertile and degraded soils in its distributional ranges.

关键词： Plus trees Seed traits Heritability Genetic gain Improvement

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On-Line Measurement of Ion Density in Atmospheric Nitrogen Discharge Filaments via Radiation Signals from Plasma Oscillation

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Plasma Science and Technology 2014年第5期16卷 448-453页

作者：汝丽丽孟月东黄建军齐冰 applied Plasma division Institute of Plasma PhysicsChinese Academy of Sciences SZU-IPPCAS Joint Lab.for applied Plasma Shenzhen University

Diagnosis of the particle number density of plasma plays an important role in the understanding of plasma sources and *** radiation signals from plasma oscillation in filaments of atmospheric nitrogen discharge,which were excited by the injection of secondary electron beams during the propagation of the streamer,are employed to determine the ion density of plasma and its evolution in the *** show that the density of N4＋ in a filament of atmospheric nitrogen discharge is of the order of 1013 *** is also found that the recombination processes play a dominant role in plasma decay,and that the ion density decreases non-monotonically with time during streamer propagation.

关键词： streamer discharge plasma oscillation radiation signal ion density recombination

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