Menu

How Viruses Attack Plants

Viruses are incapable of reproducing without the help of a host, whose cells copy their genetic material and fabricate the building blocks of new virus particles.

Jan 31, 2018
Claire Asher

Most plant viruses are transmitted by insect vectors that cause damage to the plant and create an entry point for pathogens, or that tap into the phloem to feed. Once inside, viruses use the handful of genes in their tiny genomes to orchestrate the plant cells’ machinery, while evading the plant’s defenses. Below is a generalized depiction of this infection process for RNA viruses, the most common type of plant virus.

© PENS AND BEETLES STUDIOS

  1. Some viruses can infect plants when aphids and other insects tap into the phloem to feed. Such insect vectors can also pick up virus particles and carry them to new plant hosts.
  2. Other viruses infect plant cells through a wound site created by a leaf-munching insect such as a beetle.

© PENS AND BEETLES STUDIOS

  1. Viral capsid shell opens to release the viral genome, which is translated into proteins that direct the formation of a viral factory from membranes of the endoplasmic reticulum and other organelles.
  2. Antiviral proteins, such as those in the Argonaute family, patrol cells for invading pathogens, but they cannot break into the viral factories.
  3. Viral RNA is replicated and exported to the cytoplasm.
  4. Viral RNA and newly assembled viral particles move to other cells through plasmodesmata, which can be widened by virus-encoded movement proteins.
  5. Some virus particles enter the plant’s transport streams.

Read the full story.

April 2019

Will Car T Cells Smash Tumors?

New trials take the therapy beyond the blood

Marketplace

Sponsored Product Updates

Getting More Consistent Results by Knowing the Quality of Your Protein
Getting More Consistent Results by Knowing the Quality of Your Protein
Download this guide from NanoTemper to learn how to identify and evaluate the quality of your protein samples!
Myth Busting: The Best Way to Use Pure Water in the Lab
Myth Busting: The Best Way to Use Pure Water in the Lab
Download this white paper from ELGA LabWater to learn about the role of pure water in the laboratory and the advantages of in-house water purification!
Shimadzu's New Nexera UHPLC Series with AI and IoT Enhancements Sets Industry Standard for Intelligence, Efficiency and Design
Shimadzu's New Nexera UHPLC Series with AI and IoT Enhancements Sets Industry Standard for Intelligence, Efficiency and Design
Shimadzu Corporation announces the release of the Nexera Ultra High-Performance Liquid Chromatograph series, incorporating artificial intelligence as Analytical Intelligence, allowing systems to detect and resolve issues automatically. The Nexera series makes lab management simple by integrating IoT and device networking, enabling users to easily review instrument status, optimize resource allocation, and achieve higher throughput.
IDT lowers genomic barriers with powerful rhAmpSeq™ targeted sequencing system
IDT lowers genomic barriers with powerful rhAmpSeq™ targeted sequencing system
Increasing accuracy and reducing cost barriers, IDT’s innovative system delivers simple and cost-effective amplicon sequencing