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Characterization of Trichoderma isolates against Sclerotium rolfsii, the collar rot pathogen of Amorphophallus – A polyphasic approach

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Title Characterization of Trichoderma isolates against Sclerotium rolfsii, the collar rot pathogen of Amorphophallus – A polyphasic approach
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Creator Neetha Soma John a,⇑, I.P. Anjanadevi a, Vishnu Sukumari Nath a, Senthil Alias Sankar a, Muthulekshmi Lajapathy Jeeva a, K. Susan John b, Raj Shekhar Misra
 
Subject Trichoderma Sclerotium rolfsii Antagonism Characterization Polyphasic
 
Description Not Available
The aim of the present study was to characterize ten selected isolates of Trichoderma with differential
inhibitory potential over the collar rot pathogen of Amorphophallus, Sclerotium rolfsii. Use of a polyphasic
approach which combined the morphological, molecular and biochemical attributes revealed inter specific
and intra specific diversity among different isolates. Strains with the best in vitro antagonistic capacity
were Trichoderma harzianum (Tr9) and Trichoderma asperellum (Tr10). In general, relationship was
observed between the anatgonistic capacity of the Trichoderma spp. and their in vitro biocontrol performance,
cell wall degrading enzyme production, protein profiles and the RAPD and AFLP finger print. The
pot experiment revealed a comparative success of Tr9 in controlling collar rot incidence in
Amorphophallus over Tr10. This is the first report of intensive characterization of Trichoderma strains with
the integration of the above data sets against S. rolfsii, in an attempt to explore their biocontrol potential
in managing collar rot disease.
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Date 2021-08-03T10:34:46Z
2021-08-03T10:34:46Z
2015-07-07
 
Type Article
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/52699
 
Language English
 
Relation Not Available;
 
Publisher ELSEVIER