Effect of a Colombian Isolate of Bean Southern Mosaic Virus on Selected Yield Components ofPhaseolus vulgaris

Triticum mosaic virus (TriMV) and Wheat streak mosaic virus (WSMV) infect winter wheat (Triticum aestivum) in the Great Plains region of the United States. The two viruses are transmitted by wheat curl mites (Aceria tosichella), which also transmit High Plains virus. In a field study conducted in 2011 and 2012, winter wheat cultivars Millennium (WSMV-susceptible) and Mace (WSMV-resistant) were mechanically inoculated with TriMV, WSMV, TriMV+WSMV, or sterile water at the two-leaf growth stage. Chlorophyll meter (soil plant analysis development [SPAD]) readings, area under the SPAD progress curve (AUSPC), grain yield (=yield), yield components (spikes/m2, kernels/spike, 1,000-kernel weight), and aerial dry matter were determined. In Millennium, all measured variables were significantly reduced by single or double virus inoculation, with the greatest reductions occurring in the double-inoculated treatment. Among the yield components, the greatest reductions occurred in spikes/m2. In Mace, only AUSPC was significantly reduced by the TriMV+WSMV treatment in 2012. There was a significant (P ≤ 0.05), negative linear relationship between SPAD readings and day of year in all inoculation treatments in Millennium and in the TriMV+WSMV treatment in Mace. There were significant (P ≤ 0.05), positive linear relationships between yield and SPAD readings and between yield and aerial dry matter in Millennium but not in Mace. The results from this study indicate that under field conditions, (i) Mace, a WSMV-resistant cultivar, is also resistant to TriMV, and (ii) double inoculation of winter wheat by TriMV and WSMV exacerbates symptom expression and yield loss in a susceptible cultivar.

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The effect of sugarcane mosaic virus on the yield of eleven grain sorghum (Sorghum bicolor) cultivars

Australian Journal of Experimental Agriculture ◽

10.1071/ea9790225 ◽

1979 ◽

Vol 19 (97) ◽

pp. 225 ◽

Cited By ~ 2

Author(s):

RG Henzell ◽

DM Persley ◽

DS Fletcher ◽

RS Greber ◽

LVan Slobbe

Keyword(s):

Sorghum Bicolor ◽

Mosaic Virus ◽

Yield Components ◽

Grain Sorghum ◽

Grain Weight ◽

Sugarcane Mosaic Virus ◽

Yield Losses ◽

Johnson Grass ◽

Yield Depression ◽

Leaf Symptoms

The effect of a Johnson grass strain of sugarcane mosaic virus (SCMV-Jg) on 11 grain sorghum cultivars was assessed in three experiments in which young plants were inoculated with the virus. The 11 cultivars were Alpha, Dekalb B17, Dekalb C42t, Dekalb C42Y, Dekalb E57, Goldrush, Pride, 051 61, Q5161 VR, Tx6I0SR and Yates 233. Severe yield depression (>50%) was observed in those cultivars that developed the red stripe and red leaf symptoms. The effect on cultivars producing mosaic symptoms ranged from tolerance (Tx610SR) to yield losses of ca 25%. Yield depression was primarily due to fewer grains per panicle and reduced grain weight. The number of panicles per ha was the least affected of the yield components. In most instances, the disease delayed maturity and decreased height. A virus-resistant cultivar (Q5161 VR) showed an increase in yield when inoculated with SCMV-Jg.

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Cassava common mosaic virus infection affects growth and yield components of cassava plants ( Manihot esculenta Crantz) in Argentina

Plant Pathology ◽

10.1111/ppa.13515 ◽

2021 ◽

Author(s):

Agostina Collavino ◽

Andrea A. Zanini ◽

Ricardo Medina ◽

Silvia Schaller ◽

Liliana Di Feo

Keyword(s):

Virus Infection ◽

Mosaic Virus ◽

Manihot Esculenta ◽

Yield Components ◽

Growth And Yield ◽

Manihot Esculenta Crantz ◽

Mosaic Virus Infection

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Effect of soilborne wheat mosaic virus on winter wheat yield and yield components

Acta Agronomica Hungarica ◽

10.1556/aagr.52.2004.3.12 ◽

2004 ◽

Vol 52 (3) ◽

pp. 309-317 ◽

Cited By ~ 3

Author(s):

F. Altay ◽

N. Bolat

Keyword(s):

Mosaic Virus ◽

Yield Components ◽

Wheat Yield ◽

Lower Yield ◽

Resistant Varieties ◽

Winter Wheat Yield ◽

Significant Yield ◽

Using Data ◽

Production Areas ◽

Important Disease

Soil-borne wheat mosaic virus (SBWMV) is an important disease of wheat production areas throughout the world, causing a great reduction in wheat and barley yields. The most effective way of controlling the disease is the use of resistant varieties in infested areas. In this study, the effects of SBWMV on yields and some yield components of eight susceptible, one moderately susceptible/resistant and nine resistant varieties were evaluated using data from 9 virus-infested and 6 non-infested sites in Eskisehir, Turkey over 6 years. The susceptible varieties yielded 5.35% more than resistant varieties in non-infested sites, while they gave 28.98% lower yield in infested sites. Significant yield loss differences were observed between the varieties in infested sites. Decreases were also observed in yield components at various levels. This study showed that SBWMV is an important disease, which survives in soil for long periods and causes significant yield decreases in wheat. Recently developed varieties have good resistance to the disease and are recommended to farmers in infested areas. Abbreviations: SBWMV, soil-borne wheat mosaic virus

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Quantitative Measurements on the Ion Etching of TMV

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100072125 ◽

1973 ◽

Vol 31 ◽

pp. 336-337

Author(s):

Irwin Bendet ◽

Nabil Rizk

Keyword(s):

Electron Microscope ◽

Tobacco Mosaic Virus ◽

Mosaic Virus ◽

Ion Current ◽

Beam Diameter ◽

Ion Etching ◽

Preliminary Results ◽

Quantitative Measurements ◽

Monitoring Devices

Preliminary results reported last year on the ion etching of tobacco mosaic virus indicated that the diameter of the virus decreased more rapidly at 10KV than at 5KV, perhaps reaching a constant value before disappearing completely.In order to follow the effects of ion etching on TMV more quantitatively we have designed and built a second apparatus (Fig. 1), which incorporates monitoring devices for measuring ion current and vacuum as well as accelerating voltage. In addition, the beam diameter has been increased to approximately 1 cm., so that ten electron microscope grids can be exposed to the beam simultaneously.

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Identification of maize mosaic virus by immunoelectron microscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100142827 ◽

1986 ◽

Vol 44 ◽

pp. 240-241

Author(s):

O. E. Bradfute

Keyword(s):

Zea Mays ◽

Mosaic Virus ◽

Immunoelectron Microscopy ◽

Severe Disease ◽

Maize Mosaic Virus ◽

The World ◽

Plant Rhabdovirus

Maize mosaic virus (MMV) causes a severe disease of Zea mays in many tropical and subtropical regions of the world, including the southern U.S. (1-3). Fig. 1 shows internal cross striations of helical nucleoprotein and bounding membrane with surface projections typical of many plant rhabdovirus particles including MMV (3). Immunoelectron microscopy (IEM) was investigated as a method for identifying MMV. Antiserum to MMV was supplied by Ramon Lastra (Instituto Venezolano de Investigaciones Cientificas, Caracas, Venezuela).

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Tobacco Mosaic Virus-Infected Tissue

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100119375 ◽

1985 ◽

Vol 43 ◽

pp. 510-511

Author(s):

Egbert W. Henry

Keyword(s):

Nicotiana Tabacum ◽

Tobacco Mosaic Virus ◽

Chlorogenic Acid ◽

Mosaic Virus ◽

Host Resistance ◽

Oxidative Metabolism ◽

Leaf Tissue ◽

Vein Clearing ◽

Basal Septum ◽

Concentration Levels

Tobacco mosaic virus (TMV) infection has been studied in several investigations of Nicotiana tabacum leaf tissue. Earlier studies have suggested that TMV infection does not have precise infective selectivity vs. specific types of tissues. Also, such tissue conditions as vein banding, vein clearing, liquification and suberization may result from causes other than direct TMV infection. At the present time, it is thought that the plasmodesmata, ectodesmata and perhaps the plasmodesmata of the basal septum may represent the actual or more precise sites of TMV infection.TMV infection has been implicated in elevated levels of oxidative metabolism; also, TMV infection may have a major role in host resistance vs. concentration levels of phenolic-type enzymes. Therefore, enzymes such as polyphenol oxidase, peroxidase and phenylalamine ammonia-lyase may show an increase in activity in response to TMV infection. It has been reported that TMV infection may cause a decrease in o-dihydric phenols (chlorogenic acid) in some tissues.

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