African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Preliminary identification of Citrus tristeza virus (CTV) vectors in Peninsular Malaysia

Kavous Ayazpour1,2*, Kamaruzaman Sijam1, Ganesan Vadamalai1 and Hawa Jaafar3
1National Institute of Abiotic Stress Management, Indian Council of Agricultural Research, Baramati, Pune, Maharashtra 413115, India. 2National Bureau of Agriculturally Important Insects, Indian Council of Agricultural Research, Hebbal, Bangalore, Karnataka 560024, India. 3Directorate of Mushroom Research, Indian Council of Agricultural Research, Solan, Himachal Pradesh 173213, India.
Email: [email protected]

  •  Published: 08 August 2013

Abstract

Citrus tristeza virus (CTV) is a member of genus Closterovirus with long flexuous virions, approximately 2000 X 11 nm and monopartite genome and is vectored by aphids. CTV spreads into new regions via movement of infected propagating materials and within a citrus growing area by aphid dispersion. Efficiency of CTV transmissibility is affected by the species of aphids, the source plant at acquisition feeding and the CTV isolate.  The BrCA is the most efficient aphid vector of CTV. In areas where BrCA is not present, Aphis gossypii is the most efficient vector implicated. In major citrus growing areas of Peninsular Malaysia, all Citrus varieties and its hybrides including Fortunella sp., Citrofortunella microcarpa and Citromelo were infected with CTV in a high rate. Survey of CTV vector (s) in Peninsular Malaysia revealed that at least there is one efficient vector (A. gossypii) of CTV in citrus growing areas.

 

Key words: Citrus Tristeza virus, Aphids, transmission, Peninsular Malaysia.