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Biological control of a fungus Ustilaginoidea virens causing false smut of rice

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Title Biological control of a fungus Ustilaginoidea virens causing false smut of rice
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Creator Baite MS, Prabhukarthikeyan SR, Raghu S
 
Subject Biological control, Ustilaginoidea virens, False smut, Rice
 
Description Not Available
False smut caused by the flower-infecting
fungus, Ustilaginoidea virens has become an important
disease of rice seriously hampering production
worldwide. An experiment on the eco-friendly
method of biological control of false smut was conducted
both in vitro and in field conditions to evaluate
the ability of biocontrol agents to control the disease.
The in vitro evaluation revealed maximum inhibition
of U. virens by Trichoderma harzianum (66.88%)
followed by Trichoderma atroviride (51.16%), Dendryphiella
sp. (41.50%), Bacillus amyloliquefaciens
(36.56%) and Bacillus subtilis (36.40%). The mechanisms
of action observed during in vitro tests for T.
harzianum and T. atroviride were parasitism and production
of volatile metabolites. Whereas B. subtilis
produced volatile metabolites to control U. virens.
All the plants treated with biocontrol agents showed
reduced disease incidence relative to the control demonstrating
their ability to suppress false smut under field conditions. Besides disease suppression, the
biocontrol agents were found to be beneficial to rice
as evident from the increased number of grains per
panicle in treated plants. Moreover, the chaffiness that
reduces rice production, was much lower in all treatments
except for plants treated with Dendryphiella
sp. Therefore, B. subtilis and T. harzianum have maximum
potential to control false smut of rice.
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Date 2023-03-07T06:14:33Z
2023-03-07T06:14:33Z
2022-01-01
 
Type Article
 
Identifier Baite MS, Prabhukarthikeyan SR, Raghu S. (2022). Biological control of a fungus Ustilaginoidea virens causing false smut of rice. BioControl 67: 357–363. https://doi.org/10.1007/s10526-022-10148-4
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http://krishi.icar.gov.in/jspui/handle/123456789/76566
 
Language English
 
Relation Not Available;
 
Publisher Not Available