Biology and Epidemiology of Rice Viruses

Hibino, Hiroki

doi:10.1146/annurev.phyto.34.1.249

Cited by 400 publications

(347 citation statements)

References 46 publications

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“…For example, a viral gall, rice gall dwarf phytoreovirus (RGDP), occurs on rice, Oryza sativa, and other grass hosts from Eastern Asia (Hibino, 1996). RGDP results in stunting, galling, and surface darkening of foliar tissue that is transmitted by several species of the hemipteran insect vector Nephrotettix (Cicadellidae) through the host's phloem tissue (Omura et al, 1980).…”

Section: What About Galls?mentioning

confidence: 99%

Plant paleopathology and the roles of pathogens and insects

Labandeira

Prevec

2014

International Journal of Paleopathology

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Section: What About Galls?mentioning

confidence: 99%

Plant paleopathology and the roles of pathogens and insects

Labandeira

Prevec

2014

International Journal of Paleopathology

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“…Under these conditions, a new cycle from oviposition to the adult stage can be completed in less than a month [14] [48][49][50]. However, these alternate hosts do not seem to act as virus reservoirs for transmission to occur back to rice [22], even though some of these species are highly susceptible to RHBV [15]. Many wild grasses have been observed to show hoja blanca symptoms in RHB-affected regions.…”

Section: Epidemiology Of Rhbvmentioning

confidence: 99%

“…RHB caused significant (25-50%) yield losses in 1957-1964, just to fade away in the following 15 years (1965-1980), and then re-emerge in full force from 1981 until 1984 [1,3,15] (Peter R. Jennings, 2010, unpublished data). The last outbreak of RHB in Colombia took place in 1996-1999.…”

Section: Introductionmentioning

confidence: 99%

Rice hoja blanca: a complex plant-virus-vector pathosystem.

Morales¹,

Jennings²

2010

CABI Reviews

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Rice hoja blanca (RHB; white leaf) devastated rice (Oryza sativa) plantings in tropical America for half a century, before scientists could either identify its causal agent or understand the nature of its cyclical epidemics. The association of the planthopper Tagosodes orizicolus with RHB outbreaks, 20 years after its emergence in South America, suggested the existence of a viral pathogen. However, T. orizicolus could also cause severe direct feeding damage (hopperburn) to rice in the absence of hoja blanca, and breeders promptly realized that the genetic basis of resistance to these problems was different. Furthermore, it was observed that the causal agent of RHB could only be transmitted by a relatively low proportion of the individuals in any given population of T. orizicolus and that the pathogen was transovarially transmitted to the progeny of the planthopper vectors, affecting their normal biology. An international rice germplasm screening effort was initiated in the late 1950s to identify sources of resistance against RHB and the direct feeding damage caused by T. orizicolus, making better progress in the development of hopperburn-resistant than for hojablanca-resistant rice lines. In the 1980s, the identification of a novel virus as the causal agent of RHB, and genetic studies on the interaction of this virus with its planthopper vector, confirmed previous studies on the pathogenic nature of the virus to T. orizicolus and helped explain the cyclical nature of RHB epidemics. This disease is best controlled by hybridization of susceptible indica and resistant japonica rice genotypes and the adoption of integrated disease control practices.

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“…Abbreviations: C T = threshold of cycle; NCP = nucleocapsid protein; Q-PCR = quantitative PCR; RdRp = RNA-dependent RNA polymerase; RSV = rice stripe virus; SBPH = small brown planthopper; siRNA = small interference RNA; SP = diseasespecifi c protein sovarially (vertically) to off spring by eggs (Toriyama, 1986;Falk and Tsai, 1998). Even at a lower density, viruliferous SBPH could lead to signifi cant yield losses by virus infection (Hibino, 1996). RSV has two hosts, rice plants and SBPH, therefore RSV is not only a plant virus, but also an insect virus.…”

Section: Introductionmentioning

confidence: 99%

Analysis of rice stripe virus whole-gene expression in rice and in the small brown planthopper by real-time quantitative PCR

Li¹,

Li²,

Sun³

et al. 2012

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Summary. -Rice stripe virus (RSV) is a typical member of the Tenuivirus genus, which is transmitted mainly by the small brown planthopper (SBPH) in a persistent, circulative-propagative manner. At present, expression levels of viral genes in rice and in SBPH remain unclear. In this study, we investigated RSV gene expression in RSV-infected rice tissues and in viruliferous SBPH using a sensitive and reliable real-time quantitative PCR (Q-PCR) method. Th e results revealed that NS3 gene exhibited the highest abundant expression in both, rice plants and SBPH. Disease-specifi c protein (SP) gene was the only gene with highest expression in rice, but not in SBPH. Th e expression levels of other genes were lower than SP and approximately equal to each other in both, in rice and SBPH. RNA-dependent RNA polymerase (RdRp) in SBPH was present in a notably low level. Furthermore, our results also provided a basis for further investigation on how RSV coordinates its own gene expression in the interactions with its plant and insect hosts.

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Biology and Epidemiology of Rice Viruses

Cited by 400 publications

References 46 publications

Plant paleopathology and the roles of pathogens and insects

Plant paleopathology and the roles of pathogens and insects

Rice hoja blanca: a complex plant-virus-vector pathosystem.

Analysis of rice stripe virus whole-gene expression in rice and in the small brown planthopper by real-time quantitative PCR

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