Indian Journal of Virology

  • Year: 2007
  • Volume: 18
  • Issue: 1

Histopathology and histochemistry of papaya ringspot disease in papaya

  • Author:
  • S. Kunkalikar1,, A.S. Byadgi1, V.R. Kulkarni1, M. Krishnareddy1,2, A.S. Nalini Prabhakar1,3
  • Total Page Count: 3
  • DOI:
  • Page Number: 33 to 35

1Department of Plant Pathology, University of Agricultural Sciences, Dharwad 580005.

2Division of Plant Pathology, Indian Institute of Horticultural Research, Hessarghatta, Bangalore 560089.

3Department of Crop Physiology, University of Agricultural Sciences, Dharwad 580005.

Abstract

Papaya ring spot virus brings about histological and histochemical changes in papaya upon infection. In diseased leaves, palisade cells were markedly distorted. The spongy cells lost their normal round shape with complete disintegration. Polysaccharides content in diseased leaves was moderate as compared to rich content in healthy leaves. The concentration of nucleic acid was comparatively reduced in diseased leaves. Very rich and rich concentration of protein in palisade and spongy parenchyma cells respectively were reduced to moderately rich in both types of cells.

Keywords

Papaya ring spot virus, palisade cells, nucleic acid, polysaccharides