Whitefly Transmission and Some Properties of Cowpea Mild Mottle Virus on Soybean in Thailand

Iwaki, Mitsuro; Thongmeearkom, Pornpod; Prommin, Mitree; Honda, Y.; Hibi, Tadaaki

doi:10.1094/pd-66-365

Cited by 63 publications

(48 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These values are similar to those of 1.599 g/ml for wound tumour virus (WTV) RNA (Szybalski, 1968) and 1-60 g/ml for Fiji disease virus (FDV) RNA (Ikegami & Francki, 1975), and therefore further suggest that both RNAs are double-stranded. In contrast, the buoyant densities of single-stranded TMV RNA and of RNA from cowpea mild mottle virus were found to be 1-632 g/ml and 1.636 g/ml, respectively, under the same conditions (Iwaki et al, 1982). The buoyant densities of heat-denatured RGDV and RDV RNA in Csz SO4 were 1.614 and 1.611 g/ml, respectively, and were thus lower than those of single-stranded viral RNA.…”

Section: Buoyant Densitymentioning

confidence: 76%

Double-stranded RNA of Rice Gall Dwarf Virus

Hibi

Omura²,

Saito

1984

Journal of General Virology

View full text Add to dashboard Cite

SUMMARYNucleic acid extracted from purified particles of rice gall dwarf virus (RGDV) was identified as double-stranded RNA because it (i) was susceptible to RNase A in 0.1 x standard saline citrate (SSC) but not in 1 x SSC, (ii) was resistant to nuclease S1, (iii) showed no hyperchromicity in u.v. absorption after treatment with formaldehyde at 37 °C, (iv) showed a sharp thermal transition in u.v. absorption in 0.01 × SSC and (v) had a buoyant density of 1.596 g/ml in Cs2 SO4. Electrophoresis in polyacrylamide slab gel revealed that RGDV RNA was composed of 12 segments with a total mol. wt. of about 16.9 x 106. Co-electrophoresis of RNA from RGDV and rice dwarf virus demonstrated that the electrophoretic mobilities of the seven larger segments from the two viruses were similar but that the five smaller segments differed in this respect. These results confirm that RGDV is a new virus and a third member of the genus Phytoreovirus.

show abstract

Section: Buoyant Densitymentioning

confidence: 76%

Double-stranded RNA of Rice Gall Dwarf Virus

Hibi

Omura²,

Saito

1984

Journal of General Virology

View full text Add to dashboard Cite

show abstract

“…Criniviruses are typically limited to the phloem of plants and are transmitted in a semi-persistent manner by B. tabaci (Wisler et al, 1998 (Iwaki et al, 1982) and Melon yellowing-associated virus (MYaV) (Nagata et al, 2003). CPMMV is non-persistently transmitted by B. tabaci to beans and tomato among other species (Jeyanandarajah and Brunt, 1993).…”

Section: The Viruses Transmitted By B Tabacimentioning

confidence: 99%

Scientific Opinion on the risks to plant health posed by Bemisia tabaci species complex and viruses it transmits for the EU territory

Baker¹,

Bragard²,

Candresse³

et al. 2013

EFS2

162

View full text Add to dashboard Cite

The Panel on Plant Health conducted a pest risk assessment for Bemisia tabaci and the viruses it transmits, including an evaluation of risk reduction options and an assessment of the effectiveness of the special requirements linked to B. tabaci and the viruses listed in Council Directive 2000/29/EC. B. tabaci and a large number of viruses transmitted by this polyphagous insect occur in subtropical and tropical climates around the world. Five entry pathways for B. tabaci and associated viruses were identified, with the plants for planting pathway being most significant and rated for entry of insects and viruses as likely and moderately likely, respectively. The most invasive B. tabaci species and several of its associated viruses responsible for severe diseases in major European food crops are established outdoors in coastal Mediterranean regions. Because of similar climate requirements and host plant preferences, B. tabaci and associated viruses currently not present in Europe are likely to establish within the temperature limits set for B. tabaci. Trade between European Member States allows B. tabaci to reach greenhouses in northern Europe, including those in areas with protected zone status. Because of the cool climate, establishment and spread outdoors of B. tabaci is rated unlikely for northern Europe. This situation is likely to continue even under a climatic scenario with an increase in temperature of +2 °C. B. tabaci -transmitted viruses cause severe diseases with major negative impact on crop production when risk reduction measures are not used. Risk reduction options will also apply to B. tabaci and viruses new to Europe. Risk reductions options are evaluated in terms of reducing B. tabaci populations, crop infestations, virus incidence and the impact of diseases. © European Food Safety Authority, 2013 KEY WORDSBemisia tabaci, European and non-European Bemisia tabaci, begomoviruses, non-circulatively transmitted viruses, pest risk assessment, risk reduction options. With regard to the assessment of the risks to plant health:B. tabaci is considered to be one of the most serious threats to crop cultivation worldwide, predominantly because of the large number of viruses it transmits. In regions where B. tabaci is established, viruses transmitted by this insect, especially those affecting tomato and cucurbits, and also beans, pepper and aubergines, are responsible for severe diseases that have a strong negative impact on crop yield. As a consequence, crop production in those areas is not possible without a system-wide and comprehensive set of pest and disease management measures in place. In the risk assessment area, B. tabaci is present outdoors in coastal areas with a Mediterranean climate, and in many EU countries the pest is present in greenhouses.B. tabaci is a complex of at least 28 indistinguishable morphocryptic species, of which four occur in Europe. Two species, Mediterranean (Med, formerly referred to as biotype Q) and Middle East-Asia Minor 1 (MEAM1, formerly referred to as biotype B), a...

show abstract

“…Symptoms start appearing 2-3 weeks after infection, usually at blooming stage. Whiteflies can acquire and inoculate the virus during superficial try that take only a few seconds (Iwaki et al 1982, Muniyappaand Reddy 1983, Perring et al 1999, making the use of insecticides impractical. Moreover, vectors migration to soybean field from outside during the season is a continuous process.…”

Section: Introductionmentioning

confidence: 99%