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Biocontrol potential of native Trichoderma spp. against anthracnose of great millet (Sorghum bicolour L.) from Tarai and hill regions of India

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Title Biocontrol potential of native Trichoderma spp. against anthracnose of great millet (Sorghum bicolour L.) from Tarai and hill regions of India
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Creator Nazia Manzar, Yogendra Singh, Abhijeet Shankar Kashyap, Pramod Kumar Sahu, Mahendra Vikram Singh Rajawat, Arpan Bhowmik, Pawan Kumar Sharma, Anil Kumar Saxena
 
Subject biological control , trichoderma
 
Description Not Available
Sorghum anthracnose, caused by Colletotrichum graminicola, is a destructive disease, and increasing dependency
on chemical fungicides for its control has serious environmental concerns since sorghum is fed to cattle. Thus
there is a need to develop effective bio-pesticide for biological control of C. graminicola. Since Trichoderma is a
proven biocontrol agent against plant pathogens, exploring the greater diversity that exists in Trichoderma, could
be of notable economic significance in terms of disease control. To harness the hidden potential of Trichoderma
strains against C. graminicola, a study was undertaken with 20 Trichoderma spp. isolated from 40 rhizospheric soil
samples. Dual plate antagonism assay indicated the potential of T3, T4, T6, T15, and T19 isolates of Trichoderma
against C. graminicola, with T3 isolate showing maximum (76.47%) mycelial growth inhibition. Molecular
characterization based on the sequence analysis of ITS-rRNA and tef-1α genes identified these isolates as Trichoderma
asperellum and Trichoderma harzianum. Under the glasshouse condition, biopriming of seed with Trichoderma
spp. had significantly decreased the percent disease index to 32.92% and helped improve plant growthpromoting
attributes compared to untreated control. Seed biopriming with T3 isolate exhibited higher antioxidant
enzyme activities in terms of superoxide dismutase (36.63%), peroxidase (43.59%), and polyphenol oxidase
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Date 2021-08-04T11:40:03Z
2021-08-04T11:40:03Z
2021-01-01
 
Type Article
 
Identifier Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/53105
 
Language English
 
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Publisher Not Available