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A glycine-rich nuclear effector vdCE51 of verticillium dahliae suppresses plant immune responses by inhibiting the accumulation of GhTRXH2

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The Crop Journal 2024年第4期12卷 1137-1149页

作者： Chi Li Yingqi Huang Wenjing Shang Jieyin Chen Steven J.Klosterman krishna v.subbarao Jun Qin Xiaoping Hu State Key Laboratory of Crop Stress Resistance and High-Efficiency Production Key Laboratory of Plant Protection Resources and Pest Management of Ministry of EducationKey Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural AffairsCollege of Plant ProtectionNorthwest A&F UniversityYangling 712100ShaanxiChina State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Western Agricultural Research Center Chinese Academy of Agricultural SciencesChangji 831100XinjiangChina Agricultural Research Service United States Department of AgricultureSalinasCA 93905USA Department of Plant Pathology University of CaliforniaDavisc/o United States Agricultural Research StationSalinasCA 93905USA

verticillium dahliae is an important soil-borne fungal pathogen that causes great yield losses in many cash *** of this fungus are known to regulate plant immunity but the mechanism much remains unclear.A glycine-rich nuclear effector,vdCE51,was able to suppress immune responses in tobacco against Botrytis cinerea and Sclerotinia *** effector was a required factor for full virulence of ***,and its nuclear localization was a requisite for suppressing plant *** thioredoxin GhTRXH2,identified as a positive regulator of plant immunity,was a host target of *** findings show a virulence regulating mechanism whereby the secreted nuclear effector vdCE51 interferes with the transcription of PR genes,and the SA signaling pathway by inhibiting the accumulation of GhTRXH2,thus suppressing plant immunity.

关键词： verticillium dahliae Plant immunity Effector Thioredoxin

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Nine amino acids determine recognition of verticillium dahliae effector Avel by tomato immune receptor vel.

Nine amino acids determine recognition of Verticillium dahli...

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从植物科学到农业发展——2012全国植物生物学大会

作者： Jordi C.Boshoven Karunakaran Maruthachalam krishna v.subbarao Bart P.H.J.Thomma Laboratory of Phytopathology Wageningen UniversityDroevendaalsesteeg 16708 PB WageningenThe Netherlands Department of Plant Pathology University of California

Effectors are molecules secreted by plant pathogens to facilitate infection,often by suppression of plant immune *** infection on its hosts,the soil-borne vascular wilt fungus verticillium dahliae secretes effector protein Avel(for Avirulence on ve1 tomato 1) that is recognized by the immune receptor vel that is present in particular tomato *** Ave1 unambiguously contributes to fungal virulence on susceptible tomato genotypes,the intrinsic function of Avel for fungal infection is not known ***,homologs of *** Ave1(vdAve1),have been identified in the bacterial pathogen Xanthomonas axonopodis *** as XacPNP,and in the fungal pathogens Fusarium oxysporwn,Colletotrichum higginsianum and Cercospora beticola,as FoAvel,ChAve1 and CbAve1,*** using agroinfiltration in tobacco,we found these Avel homologs are differentially recognized by *** determine the region of Avel that is recognized by ve1,targeted deletions and domain swaps were generated, based on the alignment of differentially recognized Avel *** show that the carboxyterminus of Ave1 determines the necrosis-inducing activity in ve1 expressing ***,ve1-mediated immunity can be induced by a nine amino acid sequence derived from the carboxyterminus of vdAve1.

关键词： PAMP receptor hypersensitive response(HR) Fusarium oxysporum Xanthomonas axonopodis Colletotrichum higginsianum Cercospora beticola XacPNP

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Enhanced saturation magnetization in La^(3+) doped NiCo ferrites prepared by sol-gel auto-combustion method

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Journal of Rare Earths 2024年第8期42卷 1546-1554,I0005页

作者： Maddileti Jelli vidyasagar Thopudurthy krishna Reddy C.v. Department of Physics Rayalaseema UniversityKurnoolA.P518007.Iindia Department of Physics Government PolytechnicRayachotiA.P516269India

Lanthanum doped nickel-cobalt nano ferrites with chemical formula Ni_(0.5)Co_(0.5)LaxFe_(2-x)O_(4)(x=0.05,0,10,0.15 and 0,20) were prepared using a simple sol-gel auto combustion *** basic structural properties were determined by X-ray diffraction method and the formation of single phased spinel ferrite was *** crystalline size decreased from 25 to 11 nm and lattice parameter a increases with increase of La *** surface morphology of these ferrites was observed by field-emission scanning electron microscopy(FESEM) and agglomerated irregular grains are observed with increase of the rare earth element La ***-dispersive X-ray spectroscopy(EDX) result confirms the presence of the required *** Fourier transform infrared spectroscopy(FTIR) spectrum indicates the formation of the spinel ferrite structure with M-O *** direct band measurements from ultraviolet-visible spectroscopy(Uv-vis) spectroscopy indicate that the direct band gap decreases from 1.39 to 1.19 ev for x=0.05 to x=0.15,then increases to 1.28 ev for x=*** room temperature magnetic properties of these ferrites were studied by a vibrating sample magnetometer(vSM).The enhanced saturation magnetization of 49.73 emu/g is observed for x=0.10 and then saturation magnetizations are gradually decreased for x=0.15 and x=*** the remanent magnetization and coercivity also follow the same trend.

关键词： Ferrites Sol-gel auto combustion La doping Magnetic properties Rare earths

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Nano-engineered catalysts for high-performance oxygen reduction reaction

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Chinese Chemical Letters 2024年第10期35卷 510-516页

作者： Kunsong Hu Yulong Zhang Jiayi Zhu Jinhua Mai Gang Liu Manoj krishna Sugumar Xinhua Liu Feng Zhan Rui Tan School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Energy Innovation Centre Warwick Manufacture GroupUniversity of WarwickCoventry CV47ALUnited Kingdom School of Transportation Science and Engineering Beihang UniversityBeijing 100191China IDTECH(Suzhou)Co. Ltd.Suzhou 215217China College of Mechatronical and Electrical Engineering Hebei Agricultural UniversityBaoding 071001China

The efficient energy conversion of fuel cells is greatly constrained by the slow oxygen reduction reac tion(ORR)kinetics,which necessitates the use of highly active metal catalysts such as platinum(Pt).The critical challenge limiting large-scale usage of Pt is the capital cost that can be addressed through a pro totypical approach by embedding metal nanoparticles(NPs),e.g.,Pt NPs,in the conductive framework However,previously reported embedding approaches are sophisticated and suffer from limited yields leading to higher chemical process costs and remaining distant from commercial ***,we re port a facile,cost-effective and time-efficient structural tuning approach to synthesizing ultrafine Pt NP impregnated within a conductive and highly porous carbon framework via a microwave-assisted polyo reduction *** NPs with a uniform size of~2.27 nm can be successfully integrated within the pore of the carbon framework,enabling homogeneous *** from these highly dispersed and ultrafine Pt NPs,the electrochemical surface area(ECSA)is improved to 142.98 m^(2)/gPt,2.25 times highe than that of the commercial counterpart(63.52 m^(2)/gPt).Furthermore,our structurally optimized catalys composite features a remarkably catalytic activity with a high half-wave potential(E_(1/2))of 0.895 v and an improved mass activity(MA)of 0.2289 A/mgPt,2.39-fold improvement compared to the commercia *** addition,orthogonal experiments were designed to identify the key process parameter for fabricating Pt/C catalysts,offering insights for scaled-up and industrial production.

关键词： Fuel cells Oxygenreductionreaction Structural engineering Microwave method Ultrafine nanoparticles

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Paleo-Mesoarchean sedimentary record in the Dharwar Craton,India:Implications for Archean ocean oxygenation

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Geoscience Frontiers 2024年第1期15卷 126-154页

作者： G.Harshitha C.Manikyamba M.Santosh Cheng-Xue Yang A.Keshav krishna v.v.Sesha Sai I.Panduranga Reddy CSIR-National Geophysical Research Institute(NGRI) Uppal RoadHyderabad 500007India Department of Geology Osmania UniversityHyderabad 500007India School of Earth Science and Resources China University of GeosciencesBeijing 100083China Department of Earth Science University of AdelaideAdelaide SA5005Australia Yonsei Frontier Lab Yonsei UniversitySeoul 03722Republic of Korea Geological Survey of India State UnitNagpurIndia

The early Archean oceans were marked by significant redox changes which have subsequently shaped the Earth’s *** chemical sediments of banded Iron and Manganese formations provide important geochemical proxies for these historical shifts in the redox conditions and to trace the ancient sedimentation patterns and *** this study,we investigate the proto-ore of the Archean Mn-formations of the Sandur,Chitradurga and Shimoga greenstone belts of Dharwar Craton of southern Peninsular India,which is geochemically characterised as quartz arenites,Mn-arenites,Fe-arenites,Mn-argillites and *** geochemical systematics suggest their deposition in shallow to deeper shelf in the Archean *** detrital zircon U-Pb systematics of Mn arenites and argillites indicate their maximum depositional age of 3230±52 Ma representing the oldest onset of sedimentation during the Paleo-Mesoarchean timeframe in the Chitradurga Group of Dharwar *** detrital influx proxies suggest variations in sedimentation rates associated with the Archean transgressive-regressive cycles and fluctuating hydrodynamic conditions,together reflecting an increasing trend in the contributions of recycled sediment from Sandur to Chitradurga and Shimoga greenstone *** available detrital zircon ages of the Mn arenites and argillites from these greenstone belts indicate a~600 Ma prolonged period of Mn deposition for which high-T hydrothermal fluids from Archean mid-oceanic ridges supplied the *** trace element compositions of the concordant detrital zircons suggest 3.3-3.1 Ga Dharwar basement TTG/granitoid source which is corroborated by the zircon crystallization temperatures of 690-820℃.The source-normalisedα-dose rates of the detrital zircons signify greater degrees of sediment transport and multi-cycle nature which correspond to the earliest episode of crustal growth in the Indian sub-continent associated with the Mesoarchean Ur supercontinent.T

关键词： Mn-arenites-argillites Dharwar Craton Zircon U-Pb geochronology Passive margin sediments Ocean oxygenation

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AN M/M/C RETRIAL QUEUEING SYSTEM WITH BERNOULLI vACATIONS

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Journal of Systems Science and Systems Engineering 2009年第2期18卷 222-242页

作者： B.krishna KUMAR R.RUKMANI v.THANGARAJ Department of Mathematics College of EngineeringAnna UniversityChennai600 025India Department of Mathematics Pachaiyappa's CollegeChennai600030India Ramanujan Institute for Advanced Study in Mathematics University of MadrasChennai600 005India

In this paper, a steady-state Markovian multi-server retrial queueing system with Bernoulli vacation scheduling service is studied. Using matrix-geometric approach, various interesting and important system performance measures are obtained. Further, the probability descriptors like ideal retrial and vain retrial are provided. Finally, extensive numerical illustrations are presented to indicate the quantifying nature of the approach to obtain solutions to this queueing system.

关键词： Retrial queue Bernoulli vacation matrix-geometric methods busy period vain retrial ideal retrial

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Influence of Nano-Materials on Mechanical and Permeation Characteristics of High Strength Concrete

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Journal of Wuhan University of Technology(Materials Science) 2022年第3期37卷 416-422页

作者： K v S Gopala krishna Sastry M Srinivasula Reddy A Ravitheja Civil Engineering G Pulla Reddy Engineering CollegeKurnoolAPIndia SvR Engineering College NandyalAndhra PradeshIndia

Efforts have been made to evaluate the influences of the addition of nanoparticles on the strength,durability and mineralogical changes of high strength concrete(HSC).Therefore,mixes were prepared for conventional concrete mix(CCM)of M80 ***,various mixes were prepared by replacing cementitious materials initially with 1%Nano-CaCO_(3)(NC),2%NC,3%NC in the CCM,and then 1%NC and Nano-SiO_(2)(NS)NS,2%NC and NS,3%NC and NS(NC and NS were in equal proportion)in the *** developed concretes were then evaluated for mechanical properties,permeation characteristics,and mineralogical *** the studies,it is found that the concrete at 2%NCS possesses superior mechanical and superior permeation characteristics of all the mixes.A clear variation in the mineralogical structure with the addition of nanoparticles has been observed.

关键词： high strength concrete nano silicon dioxide nano calcium carbonate mechanical properties permeation properties

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Some hydrodynamic aspects of 3-phase inverse fluidized bed

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China Particuology 2007年第5期5卷 351-356页

作者： krishna S.v.S.R. Bandaru D.v.S. Murthy K. krishnaiah Department of Chemical Engineering Indian Institute of Technology Madras

Hydrodynamics of 3-phase inverse fluidized bed is studied experimentally using low density particles for different liquid and gas velocities. The hydrodynamic characteristics studied include pressure drop, minimum liquid and gas fluidization velocities and phase holdups. The minimum liquid fluidization velocity determined using the bed pressure gradient, decreases with increase in gas velocity. The axial profiles of phase holdups shows that the liquid holdup increases along the bed height, whereas the solid holdup decreases down the bed. However, the gas holdup is almost uniform in the bed.

关键词： Inverse fluidization Inverse fluidized bed Hydrodynamics Phase holdup Axial holdup

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ETP-AKEP: enhanced three-party authenticated key exchange protocols for data integrity in cloud environments

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Journal of Control and Decision 2023年第1期10卷 126-133页

作者： Kalluri Rama krishna C.v.Guru Rao Faculty of Informatics Osmania UniversityHyderabadIndia School of Computer Science&Artificial Intelligence S.R.UniversityWarangalIndia

With key exchange protocols, a secure session key is generated between two remote users, andservers and exchanged between them. It is generally used to prevent unauthorised users fromgaining access to sensitive data. This article presents an enhanced three-party authenticated keyexchange protocols (ETP-AKE) protocol that does not depend on symmetric key encryption andinstead uses asymmetric key encryption. A key component of the proposed ETP-AKE protocol isusing elliptic curve encryption in conjunction with a one-way hash function. Its integrity certificationwas confirmed via the usage of the AvISPA tool package. Our proposed protocol is intendedto protect against various security threats, including the man-in-the-middle assault, the parallelattack, and the key-compromise attack, among others.

关键词： ECC hash function cloud integrity third party key exchange

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Microstructure and mechanical properties of similar and dissimilar metal gas tungsten constricted arc welds:Maraging steel to 13-8 Mo stainless steel

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Defence Technology（防务技术） 2019年第1期15卷 111-121页

作者： C.v.S.Murthy A.Gopala krishna G.M.Reddy Defence Research and Development Laboratory Jawaharlal Nehru Technological University Defence Metallurgical Research Laboratory

Maraging steel (250) and 13-8 Mo stainless steel plates were joined by gas tungsten constricted arc welding(GTCAW) process in similar and dissimilar metal combinations using 13-8 Mo stainless steel filler wire. The similar and dissimilar metal welds made in solutionized condition were subjected to standard post weld hardening treatments direct ageing at 485 ℃, soaking for 31/2 hours followed by air cooling(ageing treatment of maraging steel) and direct ageing at 510 ℃, soaking for 4 h followed by air cooling(ageing treatment of 13-8 Mo stainless steel). The joint characterization studies include microstructure examination, microhardness survey across the weldments and transverse weld tensile *** and dissimilar metal weldments responded to both the post weld ageing treatment. After post weld aging, increase in yield strength, UTS and slight reduction in % elongation of similar and dissimilar metal were observed. The observed tensile properties were correlated with microstructure and hardness distribution across the welds.

关键词： Maraging steel(250) 13-8 Mo stainless steel Mechanical properties Microstructure

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