Induction of Glandular Trichomes to Control in Tomato Crops: Modulation by the Natural Enemy .

Whitefly-transmitted viruses are one of the biggest threats to tomato () growing worldwide. Strategies based on the introgression of resistance traits from wild relatives are promoted to control tomato pests and diseases. Recently, a trichome-based resistance characterizing the wild species was introgressed into a cultivated tomato.

Crinivirus Tomato Chlorosis Virus Compromises the Control of Tomato Yellow Leaf Curl Virus in Tomato Plants by the Gene.

Tomato yellow leaf curl disease (TYLCD) causes severe damage to tomato crops in warm regions of the world, and is associated with infections of several whitefly ()-transmitted single-stranded (ss)DNA begomoviruses (genus , family ). The most widespread begomovirus isolates associated with TYLCD are those of the type strain of the species, known as Israel (TYLCV-IL). The gene is widely used in commercial tomato cultivars to control TYLCV-IL damage, providing resistance to the virus by restricting viral accumulation and tolerance to TYLCD by inhibiting disease symptoms.

Begomovirus Tomato Leaf Curl New Delhi Virus Is Seedborne but Not Seed Transmitted in Melon.

Seed transmission can be of considerable relevance to the dissemination of plant viruses in nature and for their prevalence and perpetuation. Long-distance spread of isolates of the begomovirus species (genus , family ) has recently occurred from Asia to the Middle East and the Mediterranean Basin. Here, we investigated the possible transmission by melon ( L.

Host Plant Resistance to to Control Damage Caused in Tomato Plants by the Emerging Crinivirus Tomato Chlorosis Virus.

Tomato chlorosis virus (genus , family ) (ToCV) is rapidly emerging, causing increased damage to tomato production worldwide. The virus is transmitted in a semipersistent manner by several whitefly (Hemiptera: Aleyrodidae) species and is expanding its geographical and host ranges associated with the emergence of whiteflies of the complex. Control is based essentially on intensive insecticide applications against the insect vector but is largely ineffective.

Revisiting Seed Transmission of the Type Strain of in Tomato Plants.

Isolates of the (TYLCV) species (genus , family ) infect tomato crops worldwide, causing severe economic damage. Members of the whitefly sibling species group are the vector of begomoviruses, including TYLCV. However, transmission of isolates of the type strain (Israel [IL]) of TYLCV (TYLCV-IL) by tomato seed has recently been reported based on infections occurring in Korea.

Tomato Yellow Leaf Curl Sardinia Virus, a Species Evolving by Mutation and Recombination: A Challenge for Virus Control.

The tomato leaf curl disease (TYLCD) is associated with infections of several species of begomoviruses (genus , family ) and causes severe damage to tomatoes throughout tropical and sub-tropical regions of the world. Among others, the (TYLCSV) species causes damage in the Mediterranean Basin since early outbreaks occurred. Nevertheless, scarce information is available about the diversity of TYLCSV.

A Novel Strain of Tomato Leaf Curl New Delhi Virus Has Spread to the Mediterranean Basin.

Tomato leaf curl New Delhi virus (ToLCNDV) is a whitefly-transmitted bipartite begomovirus (genus , family ) that causes damage to multiple cultivated plant species mainly belonging to the and families. ToLCNDV was limited to Asian countries until 2012, when it was first reported in Spain, causing severe epidemics in cucurbit crops. Here, we show that a genetically-uniform ToLCNDV population is present in Spain, compatible with a recent introduction.

Infectious cDNA clones of the crinivirus Tomato chlorosis virus are competent for systemic plant infection and whitefly-transmission.

Tomato chlorosis virus (ToCV) (genus Crinivirus, family Closteroviridae) causes important emergent diseases in tomato and other solanaceous crops. ToCV is not transmitted mechanically and is naturally transmitted by whiteflies. The ToCV genome consists of two molecules of linear, positive-sense RNA encapsidated into long flexuous virions.