Ryegrass and turnip are weeds that cause high yield losses when infesting barley, thus requiring adequate management. In this context, the aim of study was to evaluate selectivity different herbicide treatments weed control in barley crop, cultivar BRS Cauê. Two field experiments were conducted randomized blocks, with four replications. The used were: pendimethalin (800 g·ha-1), sulfentrazone +...

Precise temporal control is needed for RNA viral genomes to translate sufficient replication-required products before clearing ribosomes and initiating replication. A 3' translational enhancer in Turnip crinkle virus (TCV) overlaps an internal T-shaped structure (TSS) that binds to 60S ribosomal subunits. The higher-order structure in the region was examined through alteration of critical seque...

Little is known about how some plant viruses establish successful cross-species transmission whilst others do not; the genetic basis for adaptation is largely unknown. This study investigated the genetic changes that occurred using the progeny of an infectious clone, p35Tunos, derived from the turnip mosaic virus (TuMV) UK 1 isolate, which has a Brassica host type, but rarely infects Raphanus s...

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...

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Poly(A) binding protein 2 (PABP2) of Arabidopsis thaliana was previously shown to interact with VPg-Pro of turnip mosaic virus (TuMV) and may consequently play an important role during infection. Subcellular fractionation experiments revealed that PABP2 was predominantly a cytoplasmic soluble protein in healthy plants. However, in TuMV-infected plants, a subpopulation of PABP2 was membrane asso...