Rice stripe virus population in Kyushu district is closely related to that of eastern China in a phylogenetic analysis.

淳一, 酒井; 正俊, 大貫; 啓一郎, 松倉; 彰, 大塚; 幸代, 真田; 益軍, 周; 正哉, 松村

doi:10.4241/kyubyochu.57.7

Cited by 7 publications

(5 citation statements)

References 7 publications

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“…Therefore, the distribution of a viral population may be affected by the host’s migration. The genetic diversity of the virus has been studied in East Asia ( Wei et al, 2009 ; Jonson et al, 2009 ; Sakai et al, 2011 ). These studies included phylogenetic analyses of the nucleotide sequences of nucleocapsid protein (N) and RNA3 intergenicregion (IR3) or the whole sequence of RNA3 of RSV isolates collected in Japan (collection years 2008 and 2009), eastern China (1997–2004), and western Korea (2007–2008).…”

Section: Laodelphax Striatellusmentioning

confidence: 99%

“…The isolates from eastern China including Jiangsu consisted of type I, and those from Yunnan province, southern China, formed type II. Isolates from the Kyushu district of western Japan and most of the isolates from western Korea belonged to type I. Additionally, isolates from the Kanto district, eastern Japan, and one isolate from Korea formed another subtype (J-K subtype in Sakai et al, 2011 , or type II in Jonson et al, 2009 ). The distance between the Kyushu and Kanto districts is about 1,000 km, and the Kanto district is far from Jiangsu.…”

Section: Laodelphax Striatellusmentioning

confidence: 99%

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Migration of rice planthoppers and their vectored re-emerging and novel rice viruses in East Asia

2013

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This review examines recent studies of the migration of three rice planthoppers, Laodelphax striatellus, Sogatella furcifera, and Nilaparvata lugens, in East Asia. Laodelphax striatellus has recently broken out in Jiangsu province, eastern China. The population density in the province started to increase in the early 2000s and peaked in 2004. In 2005, Rice stripe virus (RSV) viruliferous rate of L. striatellus peaked at 31.3%. Since then, rice stripe disease spread severely across the whole province. Due to the migration of the RSV vectors, the rice stripe disease spread to neighboring countries Japan and Korea. An overseas migration of L. striatellus that occurred in 2008 was analyzed, when a slow-moving cold vortex, a type of low pressure system, reached western Japan from Jiangsu, carrying the insects into Japan. Subsequently the rice stripe diseases struck these areas in Japan severely. In Korea, similar situations occurred in 2009, 2011, and 2012. Their migration sources were also estimated to be in Jiangsu by backward trajectory analysis. Rice black-streaked dwarf virus, whose vector is L. striatellus, has recently re-emerged in eastern China, and the evidence for overseas migrations of the virus, just like the RSV’s migrations, has been given. A method of predicting the overseas migration of L. striatellus has been developed by Japanese, Chinese, and Korean institutes. An evaluation of the prediction showed that this method properly predicted migration events that occurred in East Asia from 2008 to 2011. Southern rice black-streaked dwarf virus (SRBSDV) was first found in Guangdong province. Its vector is S. furcifera. An outbreak of SRBSDV occurred in southern China in 2009 and spread to Vietnam the same year. This disease and virus were also found in Japan in 2010. The epidemic triggered many migration studies to investigate concrete spring-summer migration routes in China, and the addition of migration sources for early arrivals in Guangdong and Guangxi have been proposed. Nilaparvata lugens is also an important insect pest of rice. Its migration situations on the Indochina peninsula and return migrations in China are discussed.

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Section: Laodelphax Striatellusmentioning

confidence: 99%

Section: Laodelphax Striatellusmentioning

confidence: 99%

Migration of rice planthoppers and their vectored re-emerging and novel rice viruses in East Asia

2013

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“…2). Although the CPencoding region was relatively conserved, a distinct trait in the sequence has been reported among some isolates (Jonson et al 2009;Sakai et al 2011). The isolates from the RSV endemic region of China (KunM08, YWD07, and YAn04 isolates) and Japan (M, T, and TGOY09 isolates) were clearly represented outgroups.…”

Section: Resultsmentioning

confidence: 94%

“…RSV disease reemerged in the western provinces of Korea in -2008(Jonson et al 2009). Because of the close proximity of Korea and Japan to China, overseas migration of the insect vector from China led to outbreaks or a reemergence of RSV in Japan and Korea (Huang et al 2013;Jonson et al 2009;Otuka 2013;Otuka et al 2012;Qu et al 1997;Sakai et al 2011). However, no nationwide survey or analysis has been done on the RSV sequence variation among isolates in Korea.…”

Section: Introductionmentioning

confidence: 96%

A nationwide survey and genetic analysis of rice stripe virus in South Korea during 2012–2013

et al. 2015

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Rice stripe virus (RSV) is a major rice-infecting virus in Korea that has caused a severe resurgence in the western provinces in 2007-2008. The outbreak of RSV in rice was caused by the small brown planthopper Laodelphax striatellus (an RSV vector), which overwinters in temperate climates. Mass immigration of its insect vector from China has been proposed as a critical risk factor in development of the disease. A nationwide survey was done in June and July 2012-2013 in 30 Korean provinces to confirm RSV sequence variation. The sequence of the nucleocapsid protein (NCP) gene and the intergenic region (IR) of RSV RNA3 was analyzed. A phylogenetic analysis of the NCP gene and the IR demonstrated that the 33 isolates were closely related to earlier reported isolates from Japan and China, but the secondary IR structure showed strong geographic clustering. This is the first report on a nationwide RSV survey of Korea. The results will provide information on the relationships among RSV isolates to understand the epidemiology of this rice disease and the effect of climate changes and insect migration.

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“…The origin and dispersal of RSV remain poorly understood, but a hypothesis is emerging from studies examining the population structure of this virus [6][7][8][9]. Overall, these studies revealed that RSV falls into two major clades.…”

Section: Introductionmentioning

confidence: 99%

Bayesian Phylogeographic Inference Suggests Japan as the Center for the Origin and Dissemination of Rice Stripe Virus

Yang

Zhang

et al. 2022

Viruses

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Rice stripe virus (RSV) is one of the most important viral pathogens of rice in East Asia. The origin and dispersal of RSV remain poorly understood, but an emerging hypothesis suggests that: (i) RSV originates from Yunnan, a southwest province of China; and (ii) some places of eastern China have acted as a center for the international dissemination of RSV. This hypothesis, however, has never been tested rigorously. Using a data set comprising more than 200 time-stamped coat protein gene sequences of RSV from Japan, China and South Korea, we reconstructed the phylogeographic history of RSV with Bayesian phylogeographic inference. Unexpectedly, the results did not support the abovementioned hypothesis. Instead, they suggested that RSV originates from Japan and Japan has been the major center for the dissemination of RSV in the past decades. Based on these data and the temporal dynamics of RSV reported recently by another group, we proposed a new hypothesis to explain the origin and dispersal of RSV. This new hypothesis may be valuable for further studies aiming to clarify the epidemiology of RSV. It may also be useful in designing management strategies against this devastating virus.

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Rice stripe virus population in Kyushu district is closely related to that of eastern China in a phylogenetic analysis.

Cited by 7 publications

References 7 publications

Migration of rice planthoppers and their vectored re-emerging and novel rice viruses in East Asia

Migration of rice planthoppers and their vectored re-emerging and novel rice viruses in East Asia

A nationwide survey and genetic analysis of rice stripe virus in South Korea during 2012–2013

Bayesian Phylogeographic Inference Suggests Japan as the Center for the Origin and Dissemination of Rice Stripe Virus

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