Rice black-streaked dwarf virus: From multiparty interactions among plant-virus-vector to intermittent epidemics.

Molecular Plant Pathology
Nan WuXifeng Wang

Abstract

Rice black-streaked dwarf virus (RBSDV) (species Rice black-streaked dwarf virus, genus Fijivirus, family Reoviridae) is the causal agent of rice black-streaked dwarf and maize rough dwarf diseases, which occur in intermittent epidemics in East Asian countries and are responsible for considerable yield losses. Intermittency of epidemics make accurate forecasting and designing of effective management strategies difficult. However, recent insights into host-virus-vector insect interactions are now informing forecasting and disease control measures. Resistance genes are also being identified and mapped. RBSDV induces extreme stunting, darkened, and stiff leaves of crops and weeds only in the family Poaceae, including Oryza sativa, Zea mays, and Triticum aestivum. Infected plants produce totally or partially deformed panicles and remain alive through harvest. The nonenveloped virus particles comprise a double-layered capsid, 50-nm core with genomic double-stranded RNA (dsRNA), and six proteins. The genome of RBSDV contains 10 segments of dsRNA, named S1 to S10 in decreasing order of molecular weight. Segments 1, 2, 3, 4, 6, 8, and 10 encode the RNA-dependent RNA polymerase (RdRp), the major core structural protein, a protein with g...Continue Reading

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Citations

Feb 3, 2021·Current Opinion in Virology·Shanshan ZhaoJianguo Wu
Mar 16, 2021·Frontiers in Microbiology·Lu ZhangXifeng Wang

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Methods Mentioned

BETA
transmission electron microscopy
ubiquitination
transgenic

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