The tomato leaf curl New Delhi virus (ToLCNDV) (genus Begomovirus, family Geminiviridae) represents an important constraint to tomato production, as it causes the most predominant and economically important disease affecting tomato in the Indian sub-continent. However, in recent years, ToLCNDV has been fast extending its host range and spreading to new geographical regions, including the Middle East and the western Mediterranean Basin. Extensive research on the genome structure, protein functions, molecular biology, and plant–virus interactions of ToLCNDV has been conducted in the last decade. Special emphasis has been given to gene silencing suppression ability in order to counteract host plant defense responses. The importance of the interaction with DNA alphasatellites and betasatellites in the biology of the virus has been demonstrated. ToLCNDV genetic variability has been analyzed, providing new insights into the taxonomy, host adaptation, and evolution of this virus. Recombination and pseudorecombination have been shown as motors of diversification and adaptive evolution. Important progress has also been made in control strategies to reduce disease damage. This review highlights these various achievements in the context of the previous knowledge of begomoviruses and their interactions with plants.
Tomato Leaf Curl New Delhi Virus: An Emerging Virus Complex Threatening Vegetable and Fiber Crops
E. Moriones,S. Praveen,S. Chakraborty
Published 2017 in Viruses
ABSTRACT
PUBLICATION RECORD
- Publication year
2017
- Venue
Viruses
- Publication date
2017-09-21
- Fields of study
Agricultural and Food Sciences, Medicine, Biology, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- control strategies
Approaches discussed for limiting ToLCNDV-associated crop damage.
- dna alphasatellite
A helper-associated circular satellite DNA linked to some begomovirus infections.
Aliases: DNA alphasatellites
- dna betasatellite
A circular satellite DNA associated with begomovirus infection and symptom development.
Aliases: DNA betasatellites
- gene silencing suppression
A viral counter-defense mechanism that interferes with host RNA silencing.
- geographic spread
The movement of ToLCNDV into additional regions beyond its earlier distribution.
- host range expansion
The widening of the set of plant species that ToLCNDV can infect.
- recombination and pseudorecombination
Genetic exchange processes that generate new ToLCNDV genome combinations and diversity.
Aliases: recombination, pseudorecombination
- tomato leaf curl new delhi virus
The begomovirus species that is the focal pathogen discussed in the review.
Aliases: ToLCNDV
REFERENCES
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