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Phenotypic plasticity in rice:responses to fertilization and inoculation with arbuscular mycorrhizal fungi

Journal of Plant Ecology 2016年第1期9卷 107-116页

作者： Shujuan Zhang Li Wang Fang Ma Jixian Yang Owen K.atkin State Key Laboratory of Urban Water Resource and Environment School of Municipal and Environmental EngineeringHarbin Institute of Technology73 Huanghe RoadNangang DistrictHarbin 150090China ARC Centre of Excellence in Plant Energy Biology Division of Plant SciencesResearch School of BiologyThe Australian National UniversityBuilding 134Sullivans Creek RoadCanberraAustralian Capital Territory 2601Australia

Aims Changes in the phenotype of crops(phenotypic plasticity)are known to play an important role in determining responses to nutrient availability,with the direction and magnitude of plasticity of individual traits being crucial for grain *** study analysed the direction,magnitude and hierarchy of plastic responses of yieldrelated traits(*** allocation and yield components)of rice(Oryza sativa L.)to nutrient *** estimated the effect of inoculation with arbuscular mycorrhizal fungi(AMF)on these characteristics of phenotypic *** A field experiment was carried out in northeast China,providing rice with six NPK fertilizer levels with or without inoculation with Glomus *** maturity,we quantified biomass allocation traits(shoot:root ratio and panicle:shoot ratio)and yield component traits(panicle number per hill,spikelet number per panicle,percentage of filled spikelets and seed weight).We also assessed the direction of change in each trait and the magnitude of trait *** Findings In non-inoculated plants,we found that biomass allocation and seed-number traits(*** number per hill,spikelet number per panicle and percentage of filled spikelets)responded to fertilization in the same direction,increasing with rising *** formation was the most plastic trait,while seed mass was the least plastic *** inoculation nullified the relationship between most biomass allocation and seed-number traits(except for that between panicle:shoot ratio and the percentage of filled spikelets)but increased the magnitude of plasticity in biomass allocation traits without altering the hierarchy of traits’*** results underscore the importance of plasticity of yield-related traits per se,and the impact of AMF on plasticity,for maintaining rice yields under low fertilization regimes.

关键词： fertilization plastic response rice nutrient availability symbiosis

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Gold mineralisation and orogenic metamorphism in the Lena province of Siberia as assessed from Chertovo Koryto and Sukhoi Log deposits

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Geoscience Frontiers 2016年第3期7卷 453-481页

作者： Marina A.Yudovskaya Vadim V.Distler vsevolod Yu.Prokofiev Nickolay N.Akinfiev Institute of Geology of Ore Deposits PetrographyMineralogy and Geochemistry RAS EGRI University of the Witwatersrand

The Chertovo Koryto gold deposit（80 t Au at 1.84 g/t） in the Lena world-class province,Siberia,is hosted in a metamorphosed sequence of the Paleoproterozoic Mikhailovsk Formation that comprises the oldest black shale strata of the Baikal-Patom *** mineralisation is confined to the thrust zone complicated with a conjugate anticline fold,zones of shearing and *** struaural position of the mineralisation is similar to that at the giant Sukhoi Log deposit in the neighbouring Mama-Bodaibo *** the latter,the isotope age data suggest that Khomolkho black shales,hosts to Sukhoi Log mineralisation,are of Ediacaran age and underwent prograde metamorphism during early *** geochemical composition of the terrigenous rocks that host Sukhoi Log,Chertovo Koryto,and a number of other deposits at the various stratigraphic levels throughout the Proterozoic sequence have much in *** do not show elevated metal contents above the common black shale abundances,except for Au and As,which is at variance with the accepted view on diagenetic enrichment of black shales in the Lena *** occurrence of sagenitic rutile in quartz and chlorite pseudomorphs after biotite and other petrographic observations provide evidence on a retrograde nature of the metamorphic mineral assemblages in the Mikhailovsk *** sulphides are pyrrhotite and arsenopyrite with very minor pyrite at Chertovo Koryto,whereas pyrite is the predominant sulphide in the Sukhoi Log *** inclusion data on both deposits emphasise a high-temperature nature of the mineralisation albeit revealing great contrast in the fluid *** Log mineralisation was formed at mixing between low-salinity aqueous solutions and dense gaseous carbonic fluids,which facilitated effective gold scavenging and precipitation,as demonstrated by thermodynamic *** precursory devolatilisation of the Mikhailovsk sediments at the prograde stage results in the paucity of gaseous carbon

关键词： Gold Black shales Orogenic metamorphism Orogenic fluid Sukhoi Log Chertovo Koryto

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Tourmalinization at the Darasun goldfield,Eastern Transbaikalia:Compositional,fluid inclusion and isotopic constraints

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Geoscience Frontiers 2012年第1期3卷 59-71页

作者： vsevolod Prokofiev Ivan Baksheev Lidiya Zorina Boris Belyatsky Vladimir Ustinov Nadezhda Krivitskaya Institute of Geology of Ore Deposits Petrography Mineralogy & GeochemistryRussian Academy of SciencesMoscowRussia Lomonosov Moscow State University MoscowRussia Lomonosov Moscow State University Moscow Russia Vinogradov Institute of Geochemistry Irkutsk Russia Institute of Precambrian Geology and Geochronology RAS Saint-PetersburgRussia Vernadsky Institute of Geochemistry and Analytical Chemistry RAS MoscowRussia

Zoned tourmaline （schorl-dravite） in the matrix of hydrothermal explosive breccia and ore veins in gold deposits, Chita region, Eastern Transbaikalia, Russia, are associated with Na- and K-rich porphyry-type subvolcanic intrusives. 61So values of tourmaline from three gold deposits （Darasun, Talatui, Teremkinskoye） are ＋8.3%, ＋7.6%, and --6.0% and calculated 6180 values of fluids respon- sible for the tourmalinization are ＋7.3%, ＋7.7%, and ＋4.2%, respectively. These data imply an igneous fluid source, except at the Teremkin deposit where mixing with meteoric water is indicated. Wide ranges of Fe3＋/Fetot and the presence of vacancies characterize the Darasun deposit tourmaline indicating wide ranges off（O2） and pH of mineralizing fluids. Initial stage tourmalines from the gold deposits of the Darasun ore district are dravite or high mg schorl. Second stage tourmaline is characterized by oscillatory zoning but with Fe generally increasing towards crystal rims indicating decreasing temperature. Third stage tourmaline formed unzoned crystals with XMg （mole fraction of Mg） close to that of the first stage tourmaline, due to a close association with pyrite and arsenopyrite. From Fe^3＋/Fetot values, chemical composition and crystallization temperatures, logf（O2） of mineralizing fluids ranged from ca. -25 to 20, much higher than for the gold-bearing beresite-listvenite association, indicating that tourmalinization was not related to gold mineralization.

关键词： Tourmaline composition Fluid inclusions Oxygen isotopes Gold deposits Transbaikalia Russia

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Observational Evidences for Extremely Strong Magnetic Fields in Solar Flares

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International Journal of Astronomy and Astrophysics 2011年第3期1卷 147-154页

作者： vsevolod Gryhorovych Lozitsky 不详

New observational data related to the X1.1/2N solar flare of 17 July 2004 were investigated and compared with some old data for other powerful flares and non-flare regions. Observations were carried out with the Echelle spectrograph of the Kyiv University Astronomical Observatory. The Stokes I ± V profiles of several metallic lines with different effective Lande factors geff have been analyzed including the FeI 5434.5 line with very low magnetic sensitivity (geff = –0.014). The obvious evidences of the emissive Zeeman effect were found as in lines with great and middle Lande factors as in FeI 5434.5 line. On the basis of all analyzed data one can conclude that upper magnetic field limit in flares can reach 70 - 90 kG, i.e. about more order higher than the well-known magnetic fields in great sunspots. The possible physical nature of such superstrong fields is discussed.

关键词： Sun Solar Flares Small-Scale Magnetic Fields Superstrong Fields

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Is resource allocation and grain yield of rice altered by inoculation with arbuscular mycorrhizal fungi?

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Journal of Plant Ecology 2015年第4期8卷 436-448页

作者： Shujuan Zhang Li Wang Fang Ma Keith J.Bloomfield Jixian Yang Owen K.atkin State Key Laboratory of Urban Water Resource and Environment School of Municipal and Environmental EngineeringHarbin Institute of Technology73 Huanghe RoadNangang DistrictHarbin 150090China ARC Centre of Excellence in Plant Energy Biology Division of Plant ScienceResearch School of BiologyThe Australian National UniversityBuilding 46Sullivans Creek RoadCanberraAustralian Capital Territory 0200Australia

Aims our study quantified the combined effects of fertilization and inoculation with arbuscular mycorrhizal fungi(AMF)on grain yield and allocation of biomass and nutrients in field-grown rice(Oryza sativa l.).Methods a two-factor experiment was conducted at a field site in northeast of China(in shuangcheng,Heilongjiang Province,songhua river basin):six nitrogen-phosphorus-potassium fertilizer levels were provided(0,20,40,60,80 and 100%of the local norm of ferti-lizer supply),with or without inoculation with Glomus *** maturity,we quantified the percentage of root length colonization by AMF,grain yield,shoot:root ratios,shoot N and P contents and nutrients allocated to panicles,leaves and *** Findingsas expected,inoculation resulted in greatly increased AMF colo-nization,which in turn led to higher shoot:root ratios and greater shoot N ***:root ratios of inoculated rice increased with increasing fertilization while there was a significant interaction between fertilization and inoculation on shoot:root ***,a F inoculation increased panicle:shoot ratios,panicle N:shoot N ratios and panicle P:shoot P ratios,especially in plants grown at low fertilizer ***,inoculated rice exhibited higher grain yield,with the maximum improvement(near 62%)at the lower fertilizer *** results showed that(i)AMFinoculated plants conform to the functional equilibrium theory,albeit to a reduced extent compared to non-inoculated plants and(ii)AMF inoculation resulted in greater allocation of shoot biomass to panicles and increased grain yield by stimulating N and P redis-tribution to panicles.

关键词： arbuscular mycorrhizal fungi resource allocation rice grain yield fertilizer

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Southward Migration of Magmatic Activity in the Colima Volcanic Complex, Mexico: An Ongoing Process

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International Journal of Geosciences 2015年第9期6卷 1077-1099页

作者： Román Alvarez vsevolod Yutsis Instituto de Investigaciones en Matemáticas Aplicadas y en Sistemas Universidad Nacional Autónoma de México Ciudad Universitaria México DF México Instituto Potosino de Investigación Científica y Tecnológica San Luis Potosí México

The Colima Volcanic Complex trends in a nearly N-S direction in western Mexico, and one of its?structures, Colima volcano, is the most historically active volcano in the country. Immediately to the?N, there is another volcanic center called El Cántaro volcano, whose activity started around 1.7 Ma in its N portion and migrated to the S in various episodes. Volcanic activity migrated further south, from El Cántaro to the Colima Volcanic Complex where the southernmost manifestation, Hijos del Volcán domes, is located on the south slope of Fuego volcano. The above date appears to mark initiation of the rather continuous volcanic activity in the area. It has been noted that these volcanic manifestations lie on, or near the Rivera-Cocos inland plate boundary. Colima’s Fuego volcano is also the closest to the Middle America Trench, among the polygenetic volcanoes in Mexico. We submit that the anomalous location of volcanism in this area originates in an anomalous subduction process of the Rivera and Cocos plates and evoke a tectonic model, proposed elsewhere, to support the idea. Modeling gravimetric and aeromagnetic data we locate the magma chambers of the Fuego (active) and Nevado (extinct) volcanoes within a 65 mGals negative Bouguer anomaly elongated in a nearly N-S direction. The corresponding aeromagnetic map displays a magnetic high over the southern portion of the Fuego volcano edifice. We found two additional, associated structures whose anomalies have not been previously reported, which appear to follow the southward magmatic migration pattern. One of them is a collapse structure with a circular topographic expression, and the southernmost is a low-density intrusion ~1 km below sea level, associated with a moderate topographic bulge at the surface that we interpret as a magma body. Five lines cross the anomalies;gravimetric and magnetic fields are concurrently modeled along them to locate the magmatic bodies. In addition to the 2-D models we perform 3-D gravimetr

关键词： Colima Volcanic Complex Magma Chambers Colima Volcanoes Gravimetric Modeling Magnetic Modeling

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Caustic Structure of the Under Water Sound Channel

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Open Journal of Acoustics 2014年第1期4卷 26-37页

作者： vsevolod Petrovich Ivanov Galina Kalenikovna Ivanova Institute of Applied Physics Russian Academy of Sciences Nizhny Novgorod Russia

Using the ray method, an investigation has been carried out on the structure of caustics in the wa- veguide assuming the canonical distribution of the sound velocity with depth. Monochromatic point source of sound was on the axis of the waveguide. There is considered water rays only. It is shown that the spatial part of the phase of a running sound wave does not contain the wave propagation direction and is always a positive quantity. When the trajectories are calculated, it is assumed that inversion of rays occurs at an angle of total internal reflection where the reflection coefficient is equal to unity. This eliminates the horizontal part of the trajectories. At other points, the reflection coefficient is assumed to be zero, and the passing coefficient is equal to unity. With this change in the calculation of ray’s trajectories, the basic structure of the caustics remained the same. It is shown that the boundary line of the caustic is a number of foci in which rays intersect with similar angles out of the source and have neighbour times of propagation. Structure of the sound field along the boundary line of the caustic is periodic. Its period coincides with the wavelength of the field radiated by the source.

关键词： Rays Running Wave Sound Field Caustics Waveguide

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Arrestin-mediated signaling: Is there a controversy?

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World Journal of Biological Chemistry 2018年第3期9卷 25-35页

作者： vsevolod V Gurevich Eugenia V Gurevich Department of Pharmacology Vanderbilt University

The activation of the mitogen-activated protein(MAP) kinases extracellular signal-regulated kinase(ERK)1/2 was traditionally used as a readout of signaling of G protein-coupled receptors(GPCRs) via arrestins, as opposed to conventional GPCR signaling via G proteins. Several recent studies using HEK293 cells where all G proteins were genetically ablated or inactivated, or both non-visual arrestins were knocked out, demonstrated that ERK1/2 phosphorylation requires G protein activity, but does not necessarily require the presence of non-visual arrestins. This appears to contradict the prevailing paradigm. Here we discuss these results along with the recent data on gene edited cells and arrestinmediated signaling. We suggest that there is no real controversy. G proteins might be involved in the activation of the upstream-most MAP3Ks, although in vivo most MAP3K activation is independent of heterotrimeric G proteins, being initiated by receptor tyrosine kinases and/or integrins. As far as MAP kinases are concerned, the best-established role of arrestins is scaffolding of the three-tiered cascades(MAP3K-MAP2 K-MAPK). Thus, it seems likely that arrestins, GPCRbound and free, facilitate the propagation of signals in these cascades, whereas signal initiation via MAP3K activation may be independent of arrestins. Different MAP3Ks are activated by various inputs, some of which are mediated by G proteins, particularly in cell culture, where we artificially prevent signaling by receptor tyrosine kinases and integrins, thereby favoring GPCR-induced signaling. Thus, there is no reason to change the paradigm: Arrestins and G proteins play distinct non-overlapping roles in cell signaling.

关键词： G protein-coupled receptors Arrestin G protein Signaling Extracellular signal-regulated kinase 1/2 c-Jun N-terminal kinase 3

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复合材料高强度粘合剂减少飞机紧固件使用的研究

复合材料高强度粘合剂减少飞机紧固件使用的研究

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作者： vsevolod Kostin 上海交通大学

学位级别：硕士

在本文中评估了薄壁复合结构构件胶接接头中粘接层厚度对整个接头强度影响,提供了对现有的用于预测粘合接头强度理论方法的批判性分析。通过一系列文献研究了胶接剂的厚度对强度影响,了解到复合板胶胶接接头强度的理论估计结果与实验结... 详细信息

在本文中评估了薄壁复合结构构件胶接接头中粘接层厚度对整个接头强度影响,提供了对现有的用于预测粘合接头强度理论方法的批判性分析。通过一系列文献研究了胶接剂的厚度对强度影响,了解到复合板胶胶接接头强度的理论估计结果与实验结果之间存在一定差距。之后,通过假设初始断裂区的大小和形状的变化与粘合剂层的厚度相关,发现预测胶接接头承载能力的最有效方法是通过断裂能释放强度和胶层预断裂区形成的断裂力学能量模型计算失效强度,最终将粘合剂接头强度的预测结果与实验数据进行比较得到了较为吻合的结果。

关键词：飞机粘接接头碳纤维粘接层厚度

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Detailed Study of Radon Spatial Anomaly in Tlamacas Mountain Area, Volcano Popocatepetl, Mexico

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Open Journal of Geology 2016年第3期6卷 158-164页

作者： Anatolyi Kotsarenko vsevolod Yutsis Vladimir Grimalsky Svetlana Koshevaya Facultad de Ingeniería Universidad Autónoma del Carmen Cd. del Carmen México División de Geociencias Aplicadas Instituto Potosino de Investigación Científica y Tecnológica San Luis Potosí Mexico Centro de Investigación en Ingeniería y Ciencias Aplicadas Universidad Autónoma del Estado de Morelos Cuernavaca México

Results of a soil radon survey accomplished by 2 different methods during 2 different periods in the area of Tlamacas Mountain are presented. The first study, carried out from 15-APR-2010 to 09-MAY-2010 in 30 measurement sites by means of CR39 solid state nuclear detectors, shows 2 active zones with intensive radon emanation with a characteristic dimension of about 300 meters located in the northwestern and western parts of the Mountain. The second survey, made on 05-JUL-2011 in 23 measurement sites with 10 min sampling by a SARAD RTM 1688 Radon/Thoron monitor, in contrast, revealed a sizeable area depleted in radon and 3 active areas of increased radon release in the lateral Mountain sides. These observed phenomena strengthen our assumption about the presence of an active geological structure in Tlamacas Mountain connected with a geodynamical processes in volcano Popocatepetl.

关键词： Radon Tlamacas Mexico Anomaly Popocatepetl Monitoring

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