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Transmitting Plant Viruses Using Whiteflies
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Ipomovirus--an atypical genus in the family Potyviridae transmitted by whiteflies

Aviv Dombrovsky1, Victoria Reingold, Yehezkel Antignus

  • 1Department of Plant Pathology, ARO, The Volcani Centre, Bet Dagan, Israel.

Pest Management Science
|January 28, 2014
PubMed

Insights

Ipomoviruses are whitefly-transmitted plant viruses causing significant crop damage. This review details their genome, classification, and transmission, aiding in disease management strategies.

Area of Science:

  • Plant Virology
  • Molecular Biology
  • Crop Protection

Background:

  • Ipomoviruses, belonging to the Potyviridae family, are filamentous viruses with a positive-sense single-stranded RNA genome.
  • These viruses are transmitted by whiteflies in a semi-persistent, non-circulative manner.
  • Ipomoviruses cause substantial economic losses in vital crops like cassava, sweet potato, cucurbits, tomato, and aubergine.

Purpose of the Study:

  • To review the current knowledge on the genus Ipomovirus.
  • To focus on genome organization, taxonomic classification, and transmission mechanisms.
  • To highlight variations in genome organization and protein motifs among ipomoviruses.

Main Methods:

  • Review of existing literature and complete genome sequences of ipomoviruses.
  • Comparative analysis of genome organization and protein variations.
  • Summary of whitefly transmission mechanisms.

Main Results:

  • The genus Ipomovirus includes four accepted species, one unapproved, and two recently characterized tentative members.
  • Significant variations exist in genome organization, protein sequences, and conserved motifs among different ipomoviruses.
  • Whitefly transmission involves virions retained on the vector's mouthparts.

Conclusions:

  • Understanding ipomovirus diversity and transmission is crucial for effective crop protection.
  • Further research into functional differences related to protein variations is warranted.
  • This review provides a comprehensive overview for researchers and plant pathologists.
Keywords:
Bemisia tabaciHC-Progene silencingsemi-persistentvector transmission

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