waikavirus

Summary

Summary: A genus of plant viruses in the family SEQUIVIRIDAE. Transmission is by leafhoppers or APHIDS and depends on a self-encoded helper protein. The type species is Rice tungro spherical virus.

Top Publications

  1. Chaouch Hamada R, Redinbaugh M, Gingery R, Willie K, Hogenhout S. Accumulation of maize chlorotic dwarf virus proteins in its plant host and leafhopper vector. Virology. 2004;325:379-88 pubmed
    The genome of Maize chlorotic dwarf virus (MCDV; genus Waikavirus; family Sequiviridae) consists of a monopartite positive-sense RNA genome encoding a single large polyprotein...
  2. Gingery R, Anderson R, Redinbaugh M. Effect of environmental conditions and leafhopper gender on Maize chlorotic dwarf virus transmission by Graminella nigrifrons (Homoptera: Cicadellidae). J Econ Entomol. 2004;97:768-73 pubmed
    ..The results also showed that transmission rates under most conditions are high enough to overcome potential ambiguities caused by inoculated susceptible plants that do not become infected (disease escapes) when screening for resistance...
  3. Seo J, Kwak H, Lee Y, Kim J, Kim M, Kim C, et al. Complete genome sequence of bellflower vein chlorosis virus, a novel putative member of the genus Waikavirus. Arch Virol. 2015;160:3139-42 pubmed publisher
    ..of 42% (with 99% coverage) to the polyprotein of the isolate Orissa of rice tungro spherical virus (RTSV; genus Waikavirus)...
  4. Stewart L, Jarugula S, Zhao Y, Qu F, Marty D. Identification of a maize chlorotic dwarf virus silencing suppressor protein. Virology. 2017;504:88-95 pubmed publisher
    Maize chlorotic dwarf virus (MCDV), a member of the genus Waikavirus, family Secoviridae, has a 11784 nt (+)ssRNA genome that encodes a 389kDa proteolytically processed polyprotein...
  5. Azzam O, Arboleda M, Umadhay K, de los Reyes J, Cruz F, Mackenzie A, et al. Genetic composition and complexity of virus populations at tungro-endemic and outbreak rice sites. Arch Virol. 2000;145:2643-57 pubmed
    ..The RTBV genotypes and the coat protein RTSV genotypes were used as indicators for virus diversity. A shift in population structure of both viruses was observed at the outbreak sites with a reduced RTBV but increased RTSV gene diversity...
  6. Firth A, Atkins J. Bioinformatic analysis suggests that a conserved ORF in the waikaviruses encodes an overlapping gene. Arch Virol. 2008;153:1379-83 pubmed publisher
    The genus Waikavirus belongs to the order Picornavirales, whose members all use a polyprotein expression strategy. With the exception of Theiler's virus, overlapping genes are essentially unknown in the order...
  7. Sta Cruz F, Hull R, Azzam O. Changes in level of virus accumulation and incidence of infection are critical in the characterization of Rice tungro bacilliform virus (RTBV) resistance in rice. Arch Virol. 2003;148:1465-83 pubmed
    ..Based on these parameters, Balimau Putih was characterized having resistance to virus accumulation although the actual incidence of infection was >75%...
  8. Sharma S, Dasgupta I. Development of SYBR Green I based real-time PCR assays for quantitative detection of Rice tungro bacilliform virus and Rice tungro spherical virus. J Virol Methods. 2012;181:86-92 pubmed publisher
    ..In addition, the method was used for the simultaneous detection of RTBV and RTSV in a single reaction on the basis of melt curve analysis...
  9. Mangrauthia S, Malathi P, Agarwal S, Ramkumar G, Krishnaveni D, Neeraja C, et al. Genetic variation of coat protein gene among the isolates of Rice tungro spherical virus from tungro-endemic states of the India. Virus Genes. 2012;44:482-7 pubmed publisher
    ..Understanding of the population structure of RTSV from tungro endemic regions of India would potentially provide insights into the molecular diversification of this virus...

More Information

Publications23

  1. Sekiguchi H, Isogai M, Masuta C, Uyeda I. 3C-like protease encoded by Rice tungro spherical virus is autocatalytically processed. Arch Virol. 2005;150:595-601 pubmed
    ..A point mutation was introduced at a potential major self-cleavage site (C(2763)). The mutation abolished the catalytic activity, suggesting that the mutation site is important for the recognition of the protease...
  2. Verma V, Dasgupta I. Sequence analysis of the complete genomes of two Rice tungro spherical virus isolates from India. Arch Virol. 2007;152:645-8 pubmed
  3. Periasamy M, Niazi F, Malathi V. Multiplex RT-PCR, a novel technique for the simultaneous detection of the DNA and RNA viruses causing rice tungro disease. J Virol Methods. 2006;134:230-6 pubmed
    ..The results indicate that adaptation of this technique will strengthen the screening for tungro resistance among rice varieties and hybrids...
  4. Sailaja B, Anjum N, Patil Y, Agarwal S, Malathi P, Krishnaveni D, et al. The complete genome sequence of a south Indian isolate of Rice tungro spherical virus reveals evidence of genetic recombination between distinct isolates. Virus Genes. 2013;47:515-23 pubmed publisher
    ..The new addition of complete genome of first south Indian isolate provided an opportunity to establish the molecular evolution of RTSV through recombination analysis and phylogenetic relationship...
  5. Verma V, Sharma S, Devi S, Rajasubramaniam S, Dasgupta I. Delay in virus accumulation and low virus transmission from transgenic rice plants expressing Rice tungro spherical virus RNA. Virus Genes. 2012;45:350-9 pubmed
    ..Transmission of RTBV from the above lines was reduced significantly...
  6. Lee J, Muhsin M, Atienza G, Kwak D, Kim S, De Leon T, et al. Single nucleotide polymorphisms in a gene for translation initiation factor (eIF4G) of rice (Oryza sativa) associated with resistance to Rice tungro spherical virus. Mol Plant Microbe Interact. 2010;23:29-38 pubmed publisher
  7. Zhang S, Lee G, Davies J, Hull R. Variation in coat protein genes among five geographically different isolates of rice tungro spherical virus. Arch Virol. 1997;142:1873-9 pubmed
    ..The Thai isolate seemed to be a mixture of these two subgroups...
  8. Jones M, Redinbaugh M, Anderson R, Louie R. Identification of quantitative trait loci controlling resistance to maize chlorotic dwarf virus. Theor Appl Genet. 2004;110:48-57 pubmed
    ..Resistance was additive, with alleles from Oh1VI at the loci on chromosomes 3 and 10 contributing equally to resistance...
  9. Azzam O, Yambao M, Muhsin M, McNally K, Umadhay K. Genetic diversity of rice tungro spherical virus in tungro-endemic provinces of the Philippines and Indonesia. Arch Virol. 2000;145:1183-97 pubmed
  10. Ganesan U, Suri S, Rajasubramaniam S, Rajam M, Dasgupta I. Transgenic expression of coat protein gene of Rice tungro bacilliform virus in rice reduces the accumulation of viral DNA in inoculated plants. Virus Genes. 2009;39:113-9 pubmed publisher
    ..As compared to non-transgenic controls, two independent transgenic lines showed significantly low levels of RTBV DNA, especially towards later stages of infection and a concomitant reduction of tungro symptoms...
  11. Joshi R, Kumar V, Dasgupta I. Detection of molecular variability in rice tungro bacilliform viruses from India using polymerase chain reaction-restriction fragment length polymorphism. J Virol Methods. 2003;109:89-93 pubmed
    ..Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis on a number of field isolates indicated mixed infections and molecular heterogeneity in the viral genome...
  12. Satoh K, Kondoh H, De Leon T, Macalalad R, Cabunagan R, Cabauatan P, et al. Gene expression responses to Rice tungro spherical virus in susceptible and resistant near-isogenic rice plants. Virus Res. 2013;171:111-20 pubmed publisher
  13. Thole V, Hull R. Characterization of a protein from Rice tungro spherical virus with serine proteinase-like activity. J Gen Virol. 2002;83:3179-86 pubmed
  14. Isogai M, Cabauatan P, Masuta C, Uyeda I, Azzam O. Complete nucleotide sequence of the rice tungro spherical virus genome of the highly virulent strain Vt6. Virus Genes. 2000;20:79-85 pubmed
    ..Since all the sequences of the target region are identical to that of the Vt6 leader polypeptide, the sequence difference in the leader region seems not to correlate with the virulence of Vt6...