Tobacco ringspot virus (TRSV), a nepovirus, is a long-studied, economically important plant pathogen. Infectious particles are found in pollen and seed and are also vectored by arthropods and nematodes (1). Li and colleagues (2) presented direct evidence of the replicating strand of TRSV in honey bee tissues and showed that TRSV sequence detection rates correlated with season and hive strength ...

The recent article by Li et al. (1) lacks adequate evidence to support the authors’ assertion that a plant virus propagates or replicates in honeybees. Instead, it is possible that tobacco ringspot virus (TRSV) virions associate with the honeybee and parasitic Varroa mites in the absence of TRSV replication. First, the presence of plant viral sequences in an organism does not imply replication....

Abstract Virus-induced gene silencing (VIGS) is a useful tool to investigate the role of genes particularly in hard-to-transform plant species via Agrobacterium -mediated genetic transformation process. Soybean one most important crops for food and protein source, but its low efficiency makes it hard identify functions interest. Here, we adopted tobacco ringspot virus (TRSV)-based VIGS systems ...

Interactions between root-knot nematodes and viruses were recently reviewed by Taylor (4). Compared to virus-free cowpea (vigna sinensis Endl.), cowpea mosaic virus-infected plants formed fewer galls on roots in response to infection by Meloidogyne incognita (Kofoid and White) Chitwood (2). On the other hand, tobacco plants (Nicotiana tabacum L.) infected with tobacco ringspot virus (TRSV) and ...

Soluble silicon (Si) provides protection to plants against a variety of abiotic and biotic stress. However, the effects of Si on viral infections are largely unknown. To investigate the role of Si in viral infections, hydroponic studies were conducted in Nicotiana tabacum with two pathogens: Tobacco ringspot virus (TRSV) and Tobacco mosaic virus (TMV). Plants grown in elevated Si showed a delay...

UNLABELLED Emerging and reemerging diseases that result from pathogen host shifts are a threat to the health of humans and their domesticates. RNA viruses have extremely high mutation rates and thus represent a significant source of these infectious diseases. In the present study, we showed that a plant-pathogenic RNA virus, tobacco ringspot virus (TRSV), could replicate and produce virions in ...

Most Arabidopsis ecotypes display tolerance to the Tobacco ringspot virus (TRSV), but a subset of Arabidopsis ecotypes, including Estland (Est), develop lethal systemic necrosis (LSN), which differs from the localized hypersensitive responses (HRs) or systemic acquired resistance (SAR) characteristic of incompatible reactions. Neither viral replication nor the systemic movement of TRSV was rest...

ORELLANA, R. G., F. FAN, and C. SLOGER. 1978. Tobacco ringspot virus and Rhizobium interactions in soybean: impairment of leghemoglobin accumulation and nitrogen fixation. Phytopathology 68: 577-582. Tobacco ringspot virus (TRSV)-infected and noninfected N2-fixation rates calculated in micromoles of C2H 4 " gramHarosoy soybeans grown in the greenhouse with Rhizobium nodule-l' hr1 (on a fresh-we...

Introduction Fanleaf degeneration/decline disease is one of the most severe viral disease complexes of grapevine worldwide. It is also one of the oldest known viral diseases of Vitis vinifera with descriptions of symptoms being reported in Europe as early as 1841. This disease is now known to affect grapevines in all temperate regions where Vitis vinifera and hybrid rootstocks are grown. Within...