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Chaotic dynamics of a fractional order glucose-insulin regulatory system

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Frontiers of Information Technology & Electronic Engineering 2020年第7期21卷 1108-1118页

作者： Karthikeyan RAJAGOPAL Atiyeh BAYANI sajad JAFARI Anitha KARTHIKEYAN Iqtadar hussain Center for Nonlinear Dynamics Defence UniversityBishoflu 1041Ethiopia Institute of Energy Mekelle UniversityMekelle 231Ethiopia Department of Biomedical Engineering Amirkabir University of TechnologyTehran 159163-4311Iran Nonlinear Systems and Applications Faculty of Electrical and Electronics EngineeringTon Due Thang UniversityHo Chi Minh City 700010Vietnam Department of Mathematics Statistics and PhysicsQatar UniversityDoha 2713Qatar

The fractional order model of a glucose-insulin regulatory system is derived and presented. It has been extensively proved in the literature that fractional order analysis of complex systems can reveal interesting and unexplored features of the system. In our investigations we have revealed that the glucose-insulin regulatory system shows multistability and antimonotonicity in its fractional order form. To show the effectiveness of fractional order analysis, all numerical investigations like stability of the equilibrium points, Lyapunov exponents, and bifurcation plots are derived. Various biological disorders caused by an unregulated glucose-insulin system are studied in detail. This may help better understand the regulatory system.

关键词： Diabetes mellitus Chaos Bifurcation Multistability Antimonotonicity

Observation of chimera patterns in a network of symmetric chaotic finance systems

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Communications in Theoretical Physics 2020年第10期72卷 19-28页

作者： Biqun Chen Karthikeyan Rajagopal Fatemeh Parastesh Hamed Azarnoush sajad Jafari Iqtadar hussain School of Electronic Engineering Changzhou College of Information TechnologyChangzhou 213164China Nonlinear Systems and Applications Faculty of Electrical and Electronics EngineeringTon Duc Thang UniversityHo Chi Minh CityVietnam Department of Biomedical Engineering Amirkabir University of TechnologyNo.350Hafez AveValiasr SquareTehran 159163-4311Iran Health Technology Research Institute Amirkabir University of TechnologyNo.350Hafez AveValiasr SquareTehran 159163-4311Iran Department of Mathematics Statistics and PhysicsQatar UniversityDoha 2713Qatar

The economic and financial systems consist of many nonlinear factors that make them behave as the complex *** many chaotic finance systems have been proposed to study the complex dynamics of finance as a noticeable problem in *** fact,the intricate structure between financial institutions can be obtained by using a network of financial ***,in this paper,we consider a ring network of coupled symmetric chaotic finance systems,and investigate its behavior by varying the coupling *** results show that the coupling strength and range have significant effects on the behavior of the coupled systems,and various patterns such as the chimera and multi-chimera states are ***,changing the parameters'values,remarkably influences on the oscillators *** several synchronous clusters are formed,the attractors of the synchronized oscillators are symmetric,but different from the single oscillator attractor.

关键词： nance system symmetric attractors chimera state synchronization transitions nonlocally coupled network

Distribution,Etiology,Molecular Genetics and Management Perspectives of Northern Corn Leaf Blight of Maize(Zea mays L.)

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Phyton-International Journal of Experimental Botany 2022年第10期91卷 2111-2133页

作者： M.Ashraf ahangar Shabir hussain Wani Zahoor A.Dar Jan Roohi Fayaz Mohiddin Monika Bansal Mukesh Choudhary Sumit K.Aggarwal S.A.Waza Khursheed Ahmad Dar Ayman El Sabagh Celaleddin Barutcular Omer Konuşkan Mohammad Anwar Hossain Mountain Research Centre for Field Crops Sher-e-Kashmir University of Agricultural Sciences and Technology of KashmirJammu&Kashmir192124India Dry Land Agriculture Research Station Rangreth Sher-e-Kashmir University of Agricultural Sciences and Technology of KashmirJammu&Kashmir191132India School of Agricultural Biotechnology Punjab Agricultural UniversityLudhiana141001India Indian Institute of Maize Research PAU CampusLudhiana141001India College of Temperate Sericulture Sher-e-Kashmir University of Agricultural Sciences and Technology of KashmirJammu&Kashmir191132India Department of Agronomy Faculty of AgricultureKafrelsheikh UniversityKafr El-Sheikh33516Egypt Department of Field Crops Faculty of AgricultureSiirt UniversitySiirt56100Turkey Department of Field Crops Faculty of AgricultureUniversity ofÇukurovaAdana01330Turkey Department of Field Crops Faculty of AgricultureHatay Mustafa Kemal UniversityHatay31060Turkey Department of Genetics and Plant Breeding Bangladesh Agricultural UniversityMymensingh2202Bangladesh

Maize is cultivated extensively throughout the world and has the highest production among ***,Northern corn leaf blight(NCLB)disease caused by Exherohilum turcicum,is the most devastating limiting factor of maize *** disease causes immense losses to corn yield if it develops prior or during the tasseling and silking stages of crop *** has a worldwide distribution and its development is favoured by cool to moderate temperatures with high relative *** prevalence of the disease has increased in recent years and new races of the pathogen have been reported *** fungus *** is highly variable in *** different management strategies have proved effective to reduce economic losses from NCLB,the development of varieties with resistance to *** is the most efficient and inexpensive way for disease manage*** resistance for NCLB governed by Ht genes is a race-specific resistance which leads to a higher level of ***,some Ht genes can easily become ineffective under the high pressure of virulent strains of the ***,it is imperative to understand and examine the consistency of the genomic locations of quantitative trait loci for resistance to NCLB in diverse maize *** breeding approaches for pyramiding resistant genes against *** in maize can impart NCLB resistance under high disease pressure ***,the genome editing approaches like CRISPR-cas9 and RNAi can also prove vital for developing NCLB resistant maize *** such this review delivers emphasis on the importance and current status of the disease,racial spectrum of the pathogen,genetic nature and breeding approaches for resistance and management strategies of the disease in a sustainable manner.

关键词： Northern corn leaf blight etiology Exherohilum turcicum pathogenic variability disease resistance management strategies

Weak stem under shade reveals the lignin reduction behavior

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Journal of Integrative Agriculture 2019年第3期18卷 496-505页

作者： sajad hussain Nasir Iqbal PANG Ting Muhammad Naeem Khan LIU Wei-guo YANG Wen-yu College of Agriculture Sichuan Agricultural University/Key Laboratory of Ecophysiology and Farming System in Southwest ChinaMinistry of AgricultureChengdu 611130P.R.China College of Agriculture Bahauddin Zakariya UniversityBahadur Sub-CampusLayyah 31200Pakistan

Shades caused by neighboring tall plants in intercropping systems and weak sunlight are constraints in yield optimization. Shade influences many aspects of plant growth and development, leading to weak stems and susceptibility to lodging. The plant cell wall is composed of certain proteins that allow the walls to stretch out, a process called cell wall loosening. Shade affects anatomical, morphological, and physiological traits of plants, thus reducing the physical strength of the stem in crops by changing the loosening of cell walls. Flexibility of cells facilitates further modifications such as wall loosening. In addition, shade stress causes increased internode length, and reduced xylem synthesis and photosynthesis. In shaded plants, lignin deposition in vascular bundles and sclerenchyma cells of stems is decreased. Lignin is a light sensitive phenolic compound and shading decreases the transcript abundance of several phenolic compound(flavone and lignin) related genes. Shading significantly influences the metabolic activities of phenylalanine ammonia-lyase(PAL), peroxidase(POD), 4-coumarate: CoA ligase(4 CL), and cinnamyl alcohol dehydrogenase(CAD) involved in lignin biosynthesis. Furthermore, suppression of lignin biosynthesis activities by abiotic stresses causes abnormal phenotypes such as collapsed xylem, bent stems, and growth retardation. In this review, the underlying mechanisms illustrate that under shading conditions reduced lignin content results in slender, weak, and unstable stems. The objective of this review is to elaborate lignin biosynthesis and its variability under stressful environmental conditions, especially in shade stress environments. The effects of shade on stem lignin metabolism are discussed on the morphogenetic, physiological, and proteomic levels.

关键词： lignin biosynthesis shade stress lodging stem strength

Exploration of Genetic Pattern of Phenological Traits in Wheat (Triticum aestivum L.) under Drought Stress

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Phyton-International Journal of Experimental Botany 2022年第12期91卷 2733-2758页

作者： Iqra Ishaaq Muhammad Umer Farooq Syeda Anjum Tahira Rizwana Maqbool Celaleddin Barutçular Muhammad Yasir Saira Bano Zaid Ulhassan Ghassan Zahid Muhammad Ahsan Asghar sajad hussain Kocsy Gabor Ulkar Ibrahimova Jianqing Zhu Anshu Rastogi Department of Plant Breeding and Genetics Faculty of AgricultureUniversity of Agriculture FaisalabadFaisalabad38040Pakistan Department of Botany Faculty of Life SciencesUniversity of OkaraOkara56130Pakistan Department of Field Crops Faculty of AgricultureÇukurova UniversityAdana01330Turkey Department of Crop Genetics and Breeding Rice Research InstituteSichuan Agricultural UniversityChengdu Campus611130China Key Laboratory of Agriculture Products Improvement Zhejiang Agriculture and Forestry UniversityHangzhou311300China Institute of Crop Science Ministry of Agriculture and Rural Affairs Key Laboratory of Spectroscopy SensingZhejiang UniversityHangzhou310058China Department of Biotechnology Institute of Natural and Applied SciencesÇukurova UniversityAdana01330Turkey Agricultural Institute ELKH Centre for Agricultural ResearchMartonvásár2462Hungary College of Agronomy Sichuan Agricultural UniversityYa’an611130China Institute of Molecular Biology and Biotechnologies Azerbaijan National Academy of SciencesBakuAZ 1073Azerbaijan Research Institute of Crop Husbandry Ministry of Agriculture of the Azerbaijan RepublicBakuAZ 1098Azerbaijan Laboratory of Bioclimatology Department of Ecology and Environmental ProtectionPoznan University of Life SciencesPoznan60-649Poland

Drought is the major detrimental environmental factor for wheat(Triticum aestivum L.)*** exploration of genetic patterns underlying drought tolerance is of great *** we report the gene actions controlling the phenological traits using the line×tester model studying 27 crosses and 12 parents under normal irrigation and drought *** results interpreted via multiple analysis(mean performance,correlations,principal component,genetic analysis,heterotic and heterobeltiotic potential)disclosed highly significant differences among *** phenological waxiness traits(glume,boom,and sheath)were strongly *** leaf area exhibits a positive association with peduncle and spike length under *** growing degree days(heat-units)greatly influence spikelets and grains per spike,however,the grain yield/plant was significantly reduced(17.44 g to 13.25 g)under *** principal components based on eigenvalue indicated significant PCs(first-seven)accounted for 79.9%and 73.9%of total variability under normal irrigation and drought,*** investigated yield traits showed complex genetic *** genetic advance confronted a moderate to high heritability for spikelets/spike and grain yield/*** traits conditioned by dominant genetic effects in normal irrigation were inversely controlled by additive genetic effects under drought and vice *** magnitude of dominance effects for phenological and yield traits,i.e.,leaf twist,auricle hairiness,grain yield/plant,spikelets,and grains/spike suggests that selection by the pedigree method is appropriate for improving these traits under normal irrigation conditions and could serve as an indirect selection index for improving yield-oriented traits in wheat populations for drought ***,the phenotypic selection could be more than effective for traits conditioned by additive genetic effects under *** suggest five significant cross combinations base

关键词： Wheat drought phenological traits genetic variability heterotic and heterobeltiotic potential

Rejuvenating soybean(Glycine max L.)growth and development through slight shading stress

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Journal of Integrative Agriculture 2020年第10期19卷 2439-2450页

作者： WEN Bing-xiao sajad hussain YANG Jia-yue WANG Shan ZHANG Yi QIN Si-si XU Mei YANG Wen-yu LIU Wei-guo Institute of Ecological Agriculture Sichuan Agricultural University/Sichuan Engineering Research Centre for Crop Strip Intercropping SystemChengdu 611130P.R.China

The impact of increased shading stress on agronomic traits,photosynthetic performance and antioxidants activities in leaves of two soybeans cultivars(D16 and E93)was *** seedlings were grown in pots and exposed to no shade(S0),slight shade(S1),moderate shade(S2),and heavy shade(S3).Our findings showed that under the S3 in both cultivars,leaf fresh weight(LFW),specific leaf area(SLA)and leaf thickness decreased signifiantly,accompanied by a reduction in photochemical parameters including the maximum quantum yield(Fv/Fm)and electron transport rate(ETR).Furthermore,compared to SO,S1 significantly increased the ETR,sucrose content and the activity of catalase(CAT)in both D16 and E93 cultivars while S2 and S3 decreased the ***,under all treatments of shading stress,the antioxidant activities of superoxide dismutase(SOD)and peroxidase(POD)were lowered in both *** morphological and physiological plasticity to adapt S1 compensates for the decrease in biomass and leads to seed weight compared to that obtained with an amount of normal *** configuring the space in the intercropping systems,S1 could be helpful for optimum growth and *** photosynthesis through S1 for the intercropping systems could be a smart approach.

关键词： plant morphology photosynthesis antioxidant systems slight shade

Shade stress decreases stem strength of soybean through restraining lignin biosynthesis

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Journal of Integrative Agriculture 2019年第1期18卷 43-53页

作者： LIU Wei-guo sajad hussain LIU Ting ZOU Jun-lin REN Meng-lu ZHOU Tao LIU Jiang YANG Feng YANG Wen-yu Institute of Ecological Agriculture Sichuan Agricultural University/Sichuan Engineering Research Center for Crop Strip Intercropping System Rural Development Office of Pengzhou

Lodging is the most important constraint for soybean growth at seedling stage in maize-soybean relay strip intercropping *** the field experiments,three soybean cultivars Nandou 032-4(shade susceptible cultivar; B1),Jiuyuehuang(moderately shade tolerant cultivar; B2),and Nandou 12(shade tolerant cultivar; B3) were used to evaluate the relationship between stem stress and lignin metabolism in the stem of *** showed that the intercropped soybean was in variable light condition throughout the day time and co-growth stage with *** xylem area and cross section ratio played a main role to form the stem *** B3 both in intercropping and monocropping expressed a high stem stress with higher xylem area,lignin content,and activity of enzymes(phenylalanine ammonia-lyase(PAL),4-coumarate: CoA ligase(4CL),cinnamyl alcohol dehydrogenase(CAD),and peroxidase(POD)) than those of B1 and *** the soybean cultivars and planting pattern,lignin content was positively correlated with stem ***,a negative correlation was found between lignin content and actual rate of *** conclusion,the shade tolerant soybean cultivar had larger xylem area,higher lignin content and activities of CAD,4CL,PAL,and POD than other soybean cultivars in *** lodging in maize-soybean intercropping can be minimized by planting shade tolerant and lodging resistant cultivar of *** lignin content in stem could be a useful indicator for the evaluation of lodging resistance of soybean in intercropping and activities of enzymes were the key factors that influence the lignin biosynthesis.

关键词： intercropping genotype Glycine max lignin accumulation shade stress

Effect of shade stress on lignin biosynthesis in soybean stems

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Journal of Integrative Agriculture 2018年第7期17卷 1594-1604页

作者： LIU Wei-guo REN Meng-lu LIU Ting DU Yong-li ZHOU Tao LIU Xiao-ming LIU Jiang sajad hussain YANG Wen-yu Institute of Ecological Agriculture Sichuan Agricultural University/Sichuan Engineering Research Center for Crop Strip Intercropping System

To clarify how shade stress affects lignin biosynthesis in soybean stem, two varieties, Nandou 12（shade tolerant） and Nan 032-4（shade susceptible） grew under normal light and shade conditions（the photosynthetically active radiation and the ratio of red：far-red were lower than normal light condition）. Lignin accumulation, transcripts of genes involved in lignin biosynthesis, and intermediates content of lignin biosynthesis were analyzed. Both soybean varieties suffered shade stress had increased plant heights and internode lengths, and reduced stem diameters and lignin accumulation in stems. The expression levels of lignin-related genes were significantly influenced by shade stress, with interactions between the light environment and variety. The gene of 3-hydroxylase（C3H）, cinnamoyl-Co A reductase（CCR）, caffeoylCoAO-methyltransferase（CCoAOMT）, and peroxidase（POD） attributed to lignin biosynthesis under shade stress, and the down-regulation of these genes resulted in lower caffeic, sinapic, and ferulic acid levels, which caused a further decrease in lignin biosynthesis. Under shade stress, the shade tolerant soybean variety（Nandou 12） showed stiffer stems, higher lignin content, and greater gene expression level and higher metabolite contents than shade susceptible one. So these characteristics could be used for screening the shade-tolerant soybean for intercropping.

关键词： Glycine max stem shade stress lignin biosynthesis gene expression phenolic acids

钛对不同光环境下大豆生长、光合及产量的影响

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钛对不同光环境下大豆生长、光合及产量的影响

作者： sajad hussain 四川农业大学

学位级别：硕士

本文研究了在光照和遮荫条件下,钛离子(Ti)对大豆[Glycine max(L.)Merr.]生长和产量的影响。在光照和遮荫条件下,对大豆植株进行了5种不同浓度的钛液喷施,分别进行了水培试验、土壤盆栽试验和田间试验。在水培试验中,由于试验空间小,选... 详细信息

本文研究了在光照和遮荫条件下,钛离子(Ti)对大豆[Glycine max(L.)Merr.]生长和产量的影响。在光照和遮荫条件下,对大豆植株进行了5种不同浓度的钛液喷施,分别进行了水培试验、土壤盆栽试验和田间试验。在水培试验中,由于试验空间小,选择了3个处理(T:0 mg/L,T:125 mg/L,T:250 mg/L)田间试验中,采用了5个处理(T:0 mg/L,T:125 mg/L,T:250 mg/L,T:500 mg/L,T:1000 mg/L)。用不同的仪器对形态指标和生理参数进行了测定,Li-COR 6400测定叶片净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(GS)和胞间CO浓度(Ci),SPAD-502测定叶绿素含量,WinRhizo扫描仪测定根系结构,Fluor-Image测定荧光参数。结果表明,遮荫可显著降低根系长度、体积、表面积和直径。此外,遮荫显著减少了叶面积、叶片厚度、断茎强度、茎粗和木质素生物合成。遮荫还影响叶绿素含量、光合作用、气孔导度和蒸腾速率等生理参数。光合作用的下降可能是由于叶面积较小,叶绿素含量较低所致。遮荫影响叶片解剖结构、叶绿体和类囊体结构,进而影响叶绿素荧光参数。叶绿素荧光的降低是由于光化学猝灭(Qp)、PSII光化学有效量子产量(ФPSII)和电子传输速率(ETR)的降低所致。而底浓度的Ti对大豆生长有明显的促进作用,高浓度的Ti有抑制作用。在光照和遮荫条件下,较低浓度的Ti均能提高根长、体积和比表面积,高浓度的Ti对植物生长有不利影响。在光照和遮荫条件下,叶面喷施Ti(125、250 mg/L)显著增加叶片面积、叶绿素含量、光合作用速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、光化学猝灭(Qp)、有效量子产量(ФPSII)和电子传递速率(ETR)。Ti处理的植株可溶性总糖含量显著增加。T2和T3单株产量的提高,是由于豆荚数和籽粒数的增加。T处理的大豆产量最大达到2630.48 kg/hm,比T高19.84%,而T处理大豆籽粒产量最低,为1597.36 kg/hm,比T低24.25%。总之,在光照和遮荫条件下,低浓度的Ti通过促进光合器官的活性而促进植物的生长。

关键词：光合作用叶绿素荧光解剖学变,荫蔽胁迫钛产量