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Related Experiment Video

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Transmitting Plant Viruses Using Whiteflies

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Published on: November 8, 2013

Complex interplay: The interactions between citrus tristeza virus and its host.

Maryam Khalilzadeh¹, Dirk Jacobus Aldrich², Hans Jacob Maree³

¹Citrus Research and Education Center, University of Florida, Lake Alfred, FL, USA.

|January 9, 2025

Summary

Citrus tristeza virus (CTV) causes significant citrus diseases. Four unique CTV open reading frames (ORFs) are key to its pathogenicity and disease development in different hosts.

Keywords:

CTV Quick decline Seedling yellows Stem pitting Virus-host interactions

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Area of Science:

Plant Virology
Molecular Plant Pathology
Citrus Crop Science

Background:

Citrus tristeza virus (CTV) is a major RNA virus impacting citrus economically.
CTV infection leads to distinct diseases: quick decline, stem pitting, and seedling yellows.
CTV's genetic diversity and host-specific symptomology present research challenges.

Purpose of the Study:

To review the complex factors influencing Citrus tristeza virus disease induction.
To highlight recent advancements in understanding CTV-host interactions.
To elucidate the roles of specific CTV ORFs in pathogenicity.

Main Methods:

Functional characterization of virus-host interactions.
Analysis of Citrus tristeza virus genetic diversity.
Review of existing literature on CTV pathogenicity factors.

Main Results:

Four specific CTV open reading frames (ORFs)—p33, p18, p13, and p23—are critical for pathogenicity.
These ORFs are unique to CTV and not found in other Closteroviridae.
Progress has been made in understanding how these ORFs determine disease outcomes.

Conclusions:

Understanding CTV ORFs is crucial for managing citrus diseases.
Recent research offers new insights into the CTV pathosystem.
Further study of CTV-host interactions is vital for citrus health.