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Journal of General Plant Pathology

, Volume 70, Issue 4, pp 243–248 | Cite as

Variations and taxonomic status of begomoviruses causing severe epidemics of cassava mosaic disease in Kenya, Uganda, and Democratic Republic of the Congo

  • Hassan Karakacha WereEmail author
  • Stephan Winter
  • Edgar Maiss
VIRAL AND VIROID DISEASES
  • 56 Downloads

Abstract

The molecular variability in the DNA-A of cassava-begomoviruses, East African cassava mosaic virus (EACMV), East African cassava mosaic virus – Uganda variant (EACMV-UG), African cassava mosaic virus (ACMV), and East African cassava mosaic Zanzibar virus (EACMZV) in Kenya, Uganda, and Democratic Republic of the Congo (DRC) was investigated. Most samples from western Kenya, Uganda, and eastern DRC contained EACMV-UG. Fewer than half of the samples had a mixed infection of ACMV and EACMV-UG, and a small percentage had only ACMV infections. EACMV and EACMZV were the only begomoviruses detected in samples from the Kenyan coast. The coat protein gene nucleotide (nt) and the deduced amino acid sequence analyses revealed a high degree of sequence identity within each virus type and that EACMV-UG was most related to ACMV. However, analysis of the retrieved complete DNA-A (2781–2801 nt) sequences of selected virus types revealed that EACMV-UG DNA-A share more than 90% identity with EACMV and less than 80% with ACMV, confirming that the virus is a strain of EACMV.

Key words

Begomovirus Cassava Distribution EACMV-UG Taxonomic status 

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Copyright information

© The Phytopathological Society of Japan and Springer-Verlag Tokyo 2004

Authors and Affiliations

  • Hassan Karakacha Were
    • 1
    Email author
  • Stephan Winter
    • 2
  • Edgar Maiss
    • 3
  1. 1.Laboratory of Plant Pathology, Faculty of AgricultureGraduate School of Kyushu UniversityFukuokaJapan
  2. 2.DSMZ c/o BBABraunschweigGermany
  3. 3.Institute of Plant Diseases and Plant ProtectionUniversity of HanoverHanoverGermany

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