Agrow is part of the Business Intelligence Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC’s registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

This copy is for your personal, non-commercial use. Please do not redistribute without permission.

Printed By

UsernamePublicRestriction
UsernamePublicRestriction

Virus infection mechanism identified

Researchers from the Australian research organisation, the CSIRO, have identified a key gene that enables viruses to infect hosts. They studied the process by which cucumber mosaic virus (CMV) infects plant cells, and confirmed that specific satellite viral particles are needed to cause symptoms, such as leaf yellowing, in host plants. Satellite particles comprise small non-protein coding RNA sequences that silence expression of specific host genes through RNA interference (siRNA). The researchers found that CMV infections could only cause chlorotic symptoms when the satellite RNA sequence matched that of a fragment of the host magnesium chelatase subunit gene, CHL1, mRNA, which is essential for chlorophyll biosynthesis. In this case, satellite and host have a 22 nucleotide (nt) sequence in common, which is targeted for mRNA cleavage by CMV satellite siRNA.

Advertisement

Topics

What to read next

Advertisement
UsernamePublicRestriction

Register

AG011556

Ask The Analyst

Please fill in the form below to send over your enquiry or check the Ask The Analyst Page to find out more about the service

Your question has been successfully sent to the email address below and we will get back as soon as possible. my@email.address.

All fields are required.

Please make sure all fields are completed.

Please make sure you have filled out all fields

Please make sure you have filled out all fields

Please enter a valid e-mail address

Please enter a valid Phone Number

Ask your question to our analysts

Cancel