Effect of nitrogenous polysaccharides in sporulation of entomopathogenic fungus, Lecanicillium lecanii (Zimmermann) Zare and Gams

Publication Date : 30/04/2015


Author(s) :

Nithya, P. R. , Reji Rani O. P. , Shifa, B. S..


Volume/Issue :
Volume 1
,
Issue 4
(04 - 2015)



Abstract :

Chitin is a biodegradable, nitrogenous polysaccharide widely spread in nature, mainly in crustacean shells. Chitin and some of its derivatives have insecticidal as well as fungicidal properties, but little is known about their effect on fungal biocontrol agents. Lecanicillium lecanii (Zimmermann) Zare and Gams is a potential entomopathogen effective against sucking pests. In this work, we studied the effect of nitrogenous polysaccharides like chitin and chitosan both in pure and crude form at concentrations ranging from 0.5 – 5 %. This was carried out under liquid state fermentation. Chitin and chitosan at all the tested concentrations increased the conidiation as well as pathogenicity of L. lecanii with the retention of conidial viability. Keywords-chitin; chitosan; Lecanicillium lecanii; conidiation; pathogenicity


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