Record Details

Studies on anatomical behaviour of PaLCuV infected papaya (Carica papaya L.)

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Studies on anatomical behaviour of PaLCuV infected papaya (Carica papaya L.)
Not Available
 
Creator M.K. Mishra, M. Mishra, S. Kumari, P. Shirke, A. Srivastava and S. Saxena
 
Subject EDS, PaLCuV, papaya, SEM, viral disease
 
Description Not Available
Papaya leaf curl virus (PaLCuV) of geminiviridae family is a major threat to papaya plants in the world. The major visual characteristics
of PaLCuV infected plants are downward and inward rolling and curling of leaves in the form of an inverted cup and thickening of
veins. Microscopic observation showed that in the healthy papaya leaf, stomata guard cell size was 19-20 µm. However, it increased
significantly in infected plant leaves up to 29-30 µm. This observation suggested that stomatal density and guard cell size were changed
due to puckered anatomy of leaf. SEM analysis revealed that subsidiary or accessory cells of guard cells were less turgid and the
arrangement of starch grains was disturbed as compared to healthy plant leaves. Light microscopic, scanning electron microscopy
(SEM) and energy-dispersive X-ray spectroscopy (EDS) analyses of symptomatic leaves showed the puckering leaf lamina due to
presence of loosened cells in its tissues and hyper-accumulation of Ca2+ ions. High accumulation of Ca2+ in PaLCuV infected leaves
as compared to healthy leaves which might be the cause of hypertrophy and thickening of veins of infected papaya leaves. Uniform
trichomes/hairs/nodular structures were present in midrib of healthy leaf but were missing in infected leaf. The infected midrib showed
scantly distributed floret-like structures instead of a smooth trichomes/hairs/nodular structures in midrib of the healthy leaf.
Not Available
 
Date 2021-08-12T09:54:57Z
2021-08-12T09:54:57Z
2018-01-01
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/55389
 
Language English
 
Relation Not Available;
 
Publisher Not Available