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Protein differential expression in the elongating cotton (Gossypium hirsutum L.) fiber under nitrogen stress

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Science China(Life Sciences) 2012年第11期55卷 984-992页

作者： WANG YouHua ZHENG Mi GAO XiangBin zhou zhiguo College of Agriculture Nanjing Agricultural UniversityNanjing 210095China

Nitrogen (N) is an essential macronutrient and an important factor limiting agricultural productivity. N deficient or excess conditions often occur during the cotton growth season and incorrect N application may affect cotton fiber yield and quality. Here, the influence of N stress on the cotton fiber proteome was investigated by two-dimensional gel electrophoresis and mass spectrometry. The results indicated that N application rate affects nitrogen accumulation in fiber cells and fiber length. The proteins differentially expressed during N stress were mainly related to plant carbohydrate metabolism, cell wall component synthesis and transportation, protein/amino acid metabolism, antioxidation and hormone metabolism. The most abundant proteins were C metabolism-related. Ten days post anthesis is a critical time for fiber cells to perceive environmental stress and most proteins were suppressed in both N deficient and N excess conditions at this sampling stage. However, several N metabolism proteins were increased to enhance N stress tolerance. Excess N may suppress carbohydrate/energy metabolism in early fiber development much like N deficiency. These results have identified some interesting proteins that can be further analyzed to elucidate the molecular mechanisms of N tolerance.

关键词： cotton fiber protein nitrogen stress

Wearable energy harvesters generating electricity from low-frequency human limb movement

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Microsystems & Nanoengineering 2018年第1期4卷 165-177页

作者： Keli Li Qisheng He Jiachou Wang zhiguo zhou Xinxin Li College of Life and Environmental Sciences Shanghai Normal University200234 ShanghaiChina State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences200050 ShanghaiChina The University of Chinese Academy of Sciences 100049 BeijingChina

A wearable energy harvester technology is developed for generating electricity from the movement of human joints.A micro-electroplated ferromagnetic nickel cantilever is integrated with a piezoelectric element and bonded on a flexible *** on the magnetic interaction between the magnetized cantilever and a magnet on the substrate,a novel vertical-vibration frequency-up-conversion(FUC)structure is formed to generate stable amounts of electric energy per cycle from the horizontal substrate stretching/*** two ends of the flexible substrate are attached on both sides of a limb joint to transform joint rotation into substrate *** limb movement,the flexible substrate is horizontally stretched and rebounded,causing the cantilever to vertically release from and return to the magnet,thereby exciting the piezoelectric cantilever into resonant *** the horizontal lowfrequency limb movement is perpendicular to the vertical high-frequency resonance,the stretch has little influence on the resonance of the *** the generated energy is always stable within a wide frequency range of limb *** performance of the novel harvester is experimentally verified using a stretching/rebounding movement cycle,where the cycle corresponds to the frequency range of 0.5–5.0 *** one stretching/rebounding movement cycle,the generated electric energy is stable in the approximate range of 0.56–0.69μJ for the whole frequency *** flexible harvesters are worn on the human elbow and knee for a body kinetic energy harvesting *** power can always be generated under typical low-frequency limb movements,such as squatting,walking,jogging,and fast running,where the peak-to-peak generated voltages are always approximately 4.0 ***,energy harvesting under two-directional area stretching is also realized by adjusting the FUC structure *** flexible-substrate harvester is promising for various wearable appli

关键词： movement stretching energy

An improved master-apprentice evolutionary algorithm for minimum independent dominating set problem

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Frontiers of Computer Science 2023年第4期17卷 1-14页

作者： Shiwei PAN Yiming MA Yiyuan WANG zhiguo zhou Jinchao JI Minghao YIN Shuli HU School of Computer Science and Information Technology Northeast Normal UniversityChangchun 130117China Key Laboratory of Applied Statistics of MOE Northeast Normal UniversityChangchun 130117China

The minimum independent dominance set(MIDS)problem is an important version of the dominating set with some other *** this work,we present an improved master-apprentice evolutionary algorithm for solving the MIDS problem based on a path-breaking strategy called *** proposed MAE-PB algorithm combines a construction function for the initial solution generation and candidate solution *** is a multiple neighborhood-based local search algorithm that improves the quality of the solution using a path-breaking strategy for solution recombination based on master and apprentice solutions and a perturbation strategy for disturbing the solution when the algorithm cannot improve the solution quality within a certain number of *** show the competitiveness of the MAE-PB algorithm by presenting the computational results on classical benchmarks from the literature and a suite of massive graphs from real-world *** results show that the MAE-PB algorithm achieves high *** particular,for the classical benchmarks,the MAE-PB algorithm obtains the best-known results for seven instances,whereas for several massive graphs,it improves the best-known results for 62 *** investigate the proposed key ingredients to determine their impact on the performance of the proposed algorithm.

关键词： evolutionary algorithm combinatorial optimization minimum independent dominating set local search master apprentice path breaking

Individual and interactive influences of elevated air temperature and soil drought at the flowering and boll-forming stage on cottonseed yield and nutritional quality

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The Crop Journal 2022年第1期10卷 128-139页

作者： Bingjie Xu Min Gao Wei Hu Wenqing Zhao Shanshan Wang zhiguo zhou Key Laboratory of Crop Growth Regulation Ministry of AgricultureNanjing Agricultural UniversityNanjing 210095JiangsuChina

As the main byproduct of cotton production,cottonseed yields edible vegetable oil,ruminant feed,and industrial *** evaluated the individual and interactive effects of elevated air temperature and soil drought on cottonseed yield and nutritional quality using two cotton cultivars,Sumian 15(heat-susceptible)and PHY370 WR(heat-tolerant).The experiment was conducted under three levels of soil relative water content(SRWC):(75±5)%,(60±5)%and(45±5)%and two temperature regimes:ambient temperature(AT,31.0/26.4℃,mean daytime/night temperature)and elevated temperature(ET,33.4/28.9℃).Cottonseed yield,boll number,seed number,and single-seed weight were lower under combined ET and SRWC(45±5)%than either individual stress or combined stresses in comparison with the control treatment(SRWC(75±5)%under AT).Drought tended to increase oil content and reduce protein content,whereas ET showed almost the opposite *** the combination of ET and soil drought,oil content was still higher than under control,although ET weakened the beneficial effects of *** protein,ET offset the negative impacts of mild drought on protein content,but protein content was not increased under SRWC(45±5)%.Each stress or combined stress reduced oil and protein yields under all treatments,owing to declines in cottonseed *** combined stress reduced unsaturated fatty acid(UFA)/saturated fatty acid(SFA)and essential amino acid(EAA)/non-essential amino acid(NAA).Compared with PHY370 WR,the sensitivity of Sumian 15 to the combined factors was evidenced in the following ways:(1)seed yield,yield components,oil and protein yields were decreased more for Sumian 15 than PHY370 WR compared with the control treatment;(2)the combined stresses caused lower oil content,UFA,and UFA/SFA in Sumian 15 than PHY370 WR;(3)interaction effects of the combined factors on protein content and EAA/NAA were detected only in Sumian 15.

关键词： Cottonseed Elevated temperature Drought Oil yield and quality Protein yield and quality

An organic free radical generator independent on hydrogen peroxide for chemodynamic and immunotherapy in vivo

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Journal of Materials Science & Technology 2024年第7期174卷 85-94页

作者： Yang Chen Yunpeng Song Chaojie Tang Hong Yang Wu Wang Shiping Yang zhiguo zhou College of Chemistry and Materials Science International Joint Laboratory on Resource Chemistry of Ministry EducationShanghai Frontiers Science Center of Biomimetic CatalysisShanghai Normal UniversityShanghai 200234China Institute of Diagnostic and Interventional Radiology Shanghai Jiao Tong University Affiliated Sixth People’s HospitalShanghai 200233China

It is desirable to develop a free radical generator that is neither dependent on hydrogen peroxide nor external stimuli-triggered to achieve effective tumor ***,the free radical genera-tor MNPs-mCPBA was constructed with Zn_(0.4)Co_(0.6)F_(e2)O_(4)@Zn_(0.4)Mn_(0.6)Fe_(2)O_(4)nanoparticles(MNPs)and 3-chloroperbenzoic acid(mCPBA).We believe that the iron(Ⅱ)on the surface of MNPs-mCPBA maybe represent high reactive activity and promote the generation of a large number of organic free radicals(C_(6)H_(4)ClCOOO)in an acidic tumor microenvironment,which realizes the acid-dependent tumor treat-ment strategy independent on the H_(2)O_(2)level in *** addition,the generated organic free radicals(C_(6)H_(4)ClCOOO)effectively induced immunogenic cell death(ICD)and increased T cell ***-der the synergetic treatment with an anti-PD-L1 antibody(α-PD-L1),a favorable anti-tumor effect was achieved.

关键词： Organic free radicals Immunogenic cell death Immunotherapy Chemodynamic therapy

Effect of N fertilization rate on soil alkalihydrolyzable N, subtending leaf N concentration,fiber yield, and quality of cotton

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The Crop Journal 2016年第4期4卷 323-330页

作者： Binglin Chen Hongkun Yang Weichao Song Chunyu Liu Jiao Xu Wenqing Zhao zhiguo zhou Key Laboratory of Crop Physiology Ecology and Production Management Nanjing Agricultural UniversityJiangsu Collaborative Innovation Center for Modern Crop Production

Soil alkali-hydrolyzable nitrogen, which is sensitive to N fertilization rate, is one of the indicators of soil nitrogen supplying capacity. Two field experiments were conducted in Dongtai(120°19″ E, 32°52″ N), Jiangsu, China in 2009 and Dafeng(120°28″ E, 33°12″ N), Jiangsu province, China in 2010. Six nitrogen rates(0, 150, 300, 375, 450, and 600 kg ha^(-1)) were used to study the effect of N fertilization rate on soil alkali-hydrolyzable nitrogen content(SAHNC), subtending leaf nitrogen concentration(SLNC), yield, and fiber quality. In both Dongtai and Dafeng experiment station, the highest yield(1709 kg ha^(-1)), best quality(fiber length 30.6 mm, fiber strength 31.6 c N tex^(-1), micronaire 4.82), and highest N agronomic efficiency(2.03 kg kg^(-1)) were achieved at the nitrogen fertilization rate of 375 kg ha^(-1). The dynamics of SAHNC and SLNC could be simulated with a cubic and an exponential function,respectively. The changes in SAHNC were consistent with the changes in SLNC. Optimal average rate(0.276 mg day^(-1)) and duration(51.8 days) of SAHNC rapid decline were similar to the values obtained at the nitrogen rate of 375 kg ha^(-1)at which cotton showed highest fiber yield, quality, and N agronomic efficiency. Thus, the levels and strategies of nitrogen fertilization can affect SAHNC dynamics. The N fertilization rate that optimizes soil alkali-hydrolyzable nitrogen content would optimize the subtending leaf nitrogen concentration and thereby increase the yield and quality of the cotton fiber.

关键词： Cotton(Gossypium hirsutum L) Soil alkali-hydrolyzable nitrogen Subtending leaf nitrogen concentration Fiber yield Fiber properties Nitrogen use efficiency

The effects of straw‑returning and inorganic K fertilizer on the carbon–nitrogen balance and reproductive growth of cotton

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Journal of Cotton Research 2021年第4期4卷 347-357页

作者： HU Wei YU Chaoran ZHAO Wenqing LIU Ruixian YANG Changqinand zhou zhiguo College of Agriculture Nanjing Agricultural UniversityNanjing 210095China Vegetable Research Institute Guangdong Academy of Agricultural SciencesGuangdong 510640China Institute of Industrial Crops Jiangsu Academy of Agricultural SciencesNanjing 210014China

Background:Many studies have indicated that straw-returning could meet part or even all of the potassium(K)demand for crop growth in the field,but few have compared the effects of crop straw as K source and inorganic K fertilizer on carbon–nitrogen(C–N)balance of cotton and the reproductive *** address this,field experiments were conducted using the cotton cultivar,Siza 3,under there treatments(CK as control group one,no crop straw and inorganic K fertilizer were applied;K150 as control group two,150 kg·ha^(-1) of K2O was applied;and W9000,9000 kg·ha^(-1) wheat straw,which could provide K2O about 150 kg·ha^(-1),was incorporated into soil).Results:Although the final reproductive organ biomass did not differ between W9000 and K150,W9000 had a higher ratio of reproductive organ biomass to total biomass(RRT),suggesting that straw-returning was more conducive to the allocation of biomass to reproductive *** theoretical maximum biomass of reproductive organ was higher,but the average and maximum accumulation rates of reproductive organ biomass were 2.8%∼8.3%and 2.5%∼8.2%lower under W9000 than ***,the duration of rapid-accumulation period for reproductive organ biomass(T)was 2.0∼2.8 d longer under W9000 than K150,which was a reason for the higher RRT under ***-returning altered the dynamics of leaf K with the growth period,so that W9000 had a more drastic effect on leaf C metabolism than ***,lower soluble sugar/free amino acid and C/N ratios were measured under W9000 than K150 at boll-setting(BSS)and boll-opening(BOS)*** leaf net photosynthetic rate,sucrose phosphate synthase and sucrose synthase activities,and lower acid invertase activity were observed under W9000 than K150 at BSS and BOS and these were more conducive to sucrose ***,less sucrose was measured under W9000 than K150 at these *** should be because straw-returning promoted the assimilate transport capacity when compared with inorganic

关键词： Gossypium hirsutum L. Crop straw Inorganic potassium fertilizer Reproductive growth C-N balance

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Comparative effects of crop residue incorporation and inorganic potassium fertilization on soil C and N characteristics and microbial activities in cotton field

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Journal of Cotton Research 2019年第4期2卷 191-202页

作者： HU Wei SUI Ning YU Chaoran YANG Changqin LIU Ruixian zhou zhiguo College of Agriculture Nanjing Agricultural University Jiangsu Collaborative Innovation Center for Modern Crop Production College of Pharmaceutical Science Zhejiang Chinese Medical University Vegetable Research Institute Guangdong Academy of Agricultural Sciences Institute of Industrial Crops Jiangsu Academy of Agricultural Sciences

Background:Crop residue incorporation into the soil is an effective method to augment soil potassium (K)content and effects of crop residue and K fertilizer on soil K balance have been ***,their influences on other soil characteristics such as carbon (C) and nitrogen (N) characteristics and microbial activities have not been *** address this,field experiments were conducted in 2011 at Dafeng (sandy loam) and Nanjing (clay loam) in China with treatments including blank control without crop residue incorporation and K fertilizer application,0.9t·ha-1wheat straw incorporation (W1C0),0.7t·ha-1cotton residue incorporation (W0C1),0.9t·ha-1wheat straw+0.7t·ha-1cotton residue incorporation (W1C1) and two K fertilizer rates (150 and 300kg·ha-1(K2O)) during the cotton ***:Compared with control,K fertilizer treatments did not alter soil water-soluble organic carbon/soil organic carbon (WSOC/SOC) ratio,microbial biomass carbon (MBC)/SOC ratio,MBC/microbial biomass nitrogen (MBN) ratio,water inorganic nitrogen/total nitrogen ratio (WIN/TN),the number of cellulose-decomposing bacteria,or related enzymes activities,however,W0C1,W1C0 and W1C1 treatments significantly increased WSOC/SOC ratio,MBC/SOC ratio and MBC/MBN ratio,and decreased WIN/TN ratio at both sites.W0C1,W1C0 and W1C1 treatments also increased the number of soil cellulose-decomposing bacteria and activities of cellulase,β-glucosidase and *** different crop residue treatments,W1C0 and W1C1 treatments had more significant influences on above mentioned parameters than W0C1 ***,MBC/MBN ratio was the most important factor to result in the differences in the number of cellulose-decomposing bacteria and soil enzymes activities among different ***:Short-term K fertilizer application doesn’t affect soil C and N availability and microbial ***,crop residue incorporation alters soil C and N characteristics and microbial activities

关键词： Crop straw Potash fertilizer Soil quality

Ameliorative effects of potassium on drought-induced decreases in fiber length of cotton(Gossypium hirsutum L.) are associated with osmolyte dynamics during fiber development

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The Crop Journal 2019年第5期7卷 619-634页

作者： Wenqing Zhao Haoran Dong Rizwan Zahoor zhiguo zhou John L.Snider Yinglong Chen Kadambot H.M.Siddique Youhua Wang Key Laboratory of Crop Ecophysiology and Management of Ministry of Agriculture Nanjing Agricultural UniversityNanjing 210095JiangsuChina Jiangsu Collaborative Innovation Center for Modern Crop Production(JCIC-MCP) Nanjing Agricultural UniversityNanjing 210095JiangsuChina The UWA Institute of Agriculture The University of Western AustraliaPerthWA 6001Australia The Department of Crop and Soil Sciences University of GeorgiaTiftonGA 31794USA State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest A&F UniversityYangling 712100ShannxiChina University of the Agriculture Faisalabad Sub-campus DepalpurOkaraPakistan

Fiber length of cotton(Gossypium hirsutum L.)decreases under drought stress,potassium(K)could diminish the decreased caused by drought,but the mechanism associated with this alleviation effect is not *** evaluated the effect of K on fiber elongation using two cotton cultivars,Simian 3 and Siza 3,grown in well-watered and drought-stressed *** fertilizer(K2O)was applied 0,150,or 300 kg ha?1 in each growing *** stress reduced the final fiber length due to a decline in the maximum rate of rapid elongation(Vmax,mmday?1).The application of K alleviated the droughtinduced fiber length reduction by increasing *** 10 and 15 days post-anthesis(DPA),drought significantly reduced osmotic potential(OP)and increased K+and malate contents at all K rates,relative to well-watered conditions,which was associated with increased activities of phosphoenolpyruvate carboxylase(PEPC),V-ATPase,PPase,and PM H+-ATPase in cotton ***,the relative contribution of K+and malate to OP declined under drought in comparison with well-watered *** with control without K,K application decreased OP and increased the accumulation of osmolytes(K+,malate and soluble sugar)as well as the activities of related enzymes in fiber irrespective of water ***,K application increased osmotic adjustment during drought,and improved the contribution of K+and malate to OP,especially under drought *** study showed that drought decreased fiber length by reducing Vmax,and K application ameliorates the decline in fiber elongation due to drought by enhancing osmolytes accumulation and their contribution to OP in fiber cells.

关键词： Cotton(Gossypium hirsutum) Fiber length Drought stress Potassium application Osmolyte