Factors controlling the fate of tomato yellow leaf curl virus (TYLCV) in its vector, the whitefly vector Bemisia tabaci

Henryk Czosnek, Rena Gorovits, Murad Ghanim

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

1 Scopus citations


The destiny of tomato yellow leaf curl viruses (TYLCVs), as well as other begomoviruses, ingested by Bemisia tabaci during feeding on infected plants is quite intriguing. During the first 12 to 48h, the virus load reaches a threshold of approximately 600 million genomes per insect. This amount remains nearly stable, even though the insect continues to feed for days and weeks, raising several questions. How is such a limit maintained? What are the contributions of ingestion, egestion, excretion, replication, and immunity in maintaining this limit? How is the virus distributed along the circulative pathway and where is it stored? What are the constraints regulating the amount of virus in the insect vector, and what may happen to the insect (and/or the virus) if the regulation is impaired? This review presents and discusses the data implying that several different processes are involved in regulating the amount of begomovirus in B. tabaci, from the side of the insect as well as that of the virus, perhaps to prevent the virus to become pathogenic to its whitefly host.

Original languageAmerican English
Title of host publicationPlant Virus-Host Interaction
Subtitle of host publicationMolecular Approaches and Viral Evolution
Number of pages36
ISBN (Electronic)9780128216293
StatePublished - 1 Jan 2021

Bibliographical note

Publisher Copyright:
© 2021 Elsevier Inc. All rights reserved.


  • Autophagy
  • Begomovirus
  • Circulative transmission
  • Ingestion/egestion
  • Retention
  • TYLCVs
  • Transcription/replication


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