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Published on: July 27, 2018
ICTV Virus Taxonomy Profile: Caulimoviridae
Pierre-Yves Teycheney1,2, Andrew D W Geering3, Idranil Dasgupta4
1CIRAD, UMR AGAP, F-97130 Capesterre-Belle-Eau, Guadeloupe, France.
The Caulimoviridae family comprises plant viruses with circular DNA genomes, infecting various crops and transmitted by insects or grafting. While some endogenous viral elements can activate, most remain non-infectious.
Area of Science:
- Virology
- Plant Pathology
- Molecular Biology
Background:
- Caulimoviridae are non-enveloped, reverse-transcribing plant viruses with dsDNA genomes.
- They belong to the order Ortervirales and infect diverse monocot and dicot species.
- Some Caulimoviridae cause significant crop diseases in tropical and subtropical regions.
Purpose of the Study:
- To summarize the International Committee on Taxonomy of Viruses (ICTV) report on the Caulimoviridae family.
- To provide an overview of the taxonomy, characteristics, and host interactions of Caulimoviridae.
- To highlight the transmission routes and endogenous viral elements within this virus family.
Main Methods:
- Review and synthesis of the ICTV report on Caulimoviridae.
- Analysis of viral genome structure, replication, and host range.
- Compilation of data on virus transmission and endogenous viral elements.
Main Results:
- Caulimoviridae possess 7.1-9.8 kbp circular dsDNA genomes and infect a broad spectrum of plants.
- Transmission occurs via insect vectors (aphids, mealybugs, etc.) and grafting.
- Endogenous viral elements can activate in specific plant species (e.g., Musa balbisiana), but most are non-infectious.
Conclusions:
- The Caulimoviridae family represents a significant group of plant pathogens with diverse hosts and transmission mechanisms.
- Understanding the activation and infectivity of endogenous viral elements is crucial for plant disease management.
- This summary provides a taxonomic and biological overview based on the latest ICTV classification.
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