turnip mosaic virus (tumv), cauliflower mosaic virus (camv) and beet western yellow virus (bwyv) are considered as the most important viruses of canola, worldwide. in order to determine the distribution of these viruses in golestan province, samples from three important canola growing areas of the province were collected during 2008 and 2009. the randomly collected samples were tested for the p...

Sugarcane bacilliforin virus (SCBV) was detected in the world collection of sugarcane gerinplasm at Cannanore in recent years. The characteristic foliar syinptolns were freckles, chlorotic stripes of vaiying length, narrowing of leaves, stunted growth, presence of internodal cracks and a "buizclzy top" appearance. Among the different genotypes, those of Sacckarum oflcinaruin appear most prone t...

Artificial microRNAs (amiRNAs) are the expression products of engineered microRNA (miRNA) genes that efficiently and specifically downregulate RNAs that contain complementary sequences. Transgenic plants expressing high levels of one or more amiRNAs targeting particular sequences in the genomes of some RNA viruses have shown specific resistance to the corresponding virus. This is the case of th...

two hundred and thirty one leaf samples of virus infected and mosaic and as well dwarf mosaic symptoms showing maize plants from various corn fields in tehran province were collected during the growing season 2003. by performing serological tests of das-elisa, diba and tpia, using scmv, mdmv, srmv and jgmv antisera, only scmv was detected in samples, with all samples reacting strongly to the sc...

Maize dwarf mosaic and sugarcane mosaic, the diseases incited by Maize dwarf mosaic virus (MDMV) and Sugarcane mosaic virus (SCMV), are among the most important maize viral diseases worldwide (28). The two viruses are related members of the genus Potyvirus that are nonpersistently transmitted by aphids (16) and can be mechanically transmitted experimentally. They are differentiated from one ano...

Background and Aims: Celery mosaic virus (CeMV) is one of the causal agents of viral diseases in celery (Apium graveolens). CeMV is a member of the Potyvirus genus in Potyviridae family. The virus is naturally transmitted by aphids in a non-persistent manner. During growing season 2006-2007 viral disease symptoms were observed in celery fields grown in Tehran Province (Bage daneshkade, Mohamads...

1. Denatured tobacco mosaic virus has a number of SH groups corresponding to its total sulfur content of 0.2 per cent. The SH groups were estimated by titration with ferricyanide, tetrathionate, and p-chloromercuribenzoate in guanidine hydrochloride solution and by reduction of the uric acid reagent in urea solution. 2. The SH groups of tobacco mosaic virus or their precursors can be abolished ...

The thermal inactivation point (TIP) of SCSMV was determined by heating the infected plant sap for 10 min at 50oC, 55oC, 60oC, and 65oC. The sap was inoculated mechanically on indicator plant Dactylactonium aegypticum. The virus was detected by a reverse transcription polymerase chain reaction (RT-PCR) using specific primer to amplify a part of the coat protein (CP) gene. The SCSMV was detected...