Molecular characterization of Citrus yellow mosaic badnavirus (CMBV) isolates revealed the presence of two distinct strains infecting citrus in India

Dilip K. Ghosh, Sumit Bhose, Krishanu Mukherjee, Balaji Aglave, A. J. Warghane, Manali Motghare, V. K. Baranwal, Arun K. Dhar

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Citrus yellow mosaic badnavirus (CMBV) is a non-enveloped, bacilliform DNA virus and the etiologic agent of yellow mosaic disease of citrus in India. The disease was initially reported from the southern parts of India and has now spread to other parts of the country. It is a serious disease of sweet orange (Citrus sinensis) in southern India, where it causes significant yield losses. During a recent survey of citrus groves in the Nagpur region, central India, characteristic mosaic symptoms were observed in mandarin orange (Citrus reticulata) and sweet orange. Virus transmission studies, electron microscopy, PCR amplification and sequencing of cloned PCR products from samples showing mosaic symptoms confirmed the presence of a badnavirus. The CMBV–Nagpur isolate could be transmitted to the Rangpur lime (C. limonia) and acid lime (Citrus aurantifolia) by graft inoculation. Sequence analysis of a segment of ORF-III region and intergenic region (IR) of the viral genome revealed that CMBV–Nagpur isolate formed a distinct clade along with some previously reported isolates that are known to infect acid lime and Rangpur lime. CMBV isolates that infect citrus species other than the acid lime and Rangpur lime formed a second clade. Based on the transmission studies and phylogenetic analyses, it was concluded that at least two strains of CMBV exist in India currently.

Original languageEnglish (US)
Pages (from-to)681-689
Number of pages9
JournalPhytoparasitica
Volume42
Issue number5
DOIs
StatePublished - Dec 2014
Externally publishedYes

Keywords

  • Acid lime
  • Citrus aurantifolia
  • Citrus limonia
  • Citrus sinensis
  • Rangpur lime
  • Sweet orange

ASJC Scopus subject areas

  • Plant Science
  • Insect Science

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