Background Jatropha curcas is a drought resistant shrub native in tropical America, now widely grown in many tropical and subtropical regions for biodiesel production [1]. First reports on virus infections in Jatropha indicated the occurrence of viruses closely related to Cassava mosaic virus in India, reaching a disease incidence from 25 to 47%. This might represent a major constrain to the pr...

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...

Occurence and Yield Effects of Wheat Infected with Triticum Mosaic Virus Authors: D.L. Seifers, J.T. Martin, J.P. Fellers Submitted to: Plant Disease Triticum mosaic virus (TriMV) was discovered recently and little is known about the virus’ biology and potential to cause yield reductions. TriMV has been found all across the Great Plains and this study examined whether TriMV infection would re-o...

Tobacco mosaic virus (TMV) RN.4 and TMV coat protein were reconstitut,ed in the presence of an excess of host RNA or turnip yellow mosaic virus (TYMV) RNA. TMV protein and its homologous RNA recognized each other specifically in the presence of an excess of host RNA, but when TMV RNA and TYMV RNA were mixed with protein, both RNAs were encapsidated. Indeed, at pH 6, TYMV RNA was recognized by T...

background: cucumber mosaic virus (cmv) from the bromoviridae family, is one of the most widespread plant viruses in the world. objectives: in the present study tomato fields in guilan, isfahan, khorasan razavi, khuzestan and tehran provinces were surveyed to determine the presence of cmv subgroups during 2011-2012. materials and methods: out of 305 symptomatic leaf samples tested by enzyme-lin...

Experimental investigation of the ultimate resistance of slender, steel-plate girder web panels to combined shear-and-patch loading indicates significant interaction between shear loading and patch loading. However, an existing interaction formula is based on experimental results. Herein, an improved design procedure for slender plate girders subjected to combined shear and patch loading is pro...

Background: Potyviruses are accounted for 40% of viral diseases of various crops including vegetables and legumes. Potyviruses can be transmitted through plant sap, seeds and many aphid species. Due to ease of spread of these viruses detection of such viruses are crucial as to the control of the incited diseases. Objectives: This study compared the efficiencies of two couples of primers in the...