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Compatible salt-tolerant rhizosphere microbe-mediated induction of phenylpropanoid cascade and induced systemic responses against Bipolaris sorokiniana (Sacc.) Shoemaker causing spot blotch disease in wheat (Triticum aestivum L.)

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Title Compatible salt-tolerant rhizosphere microbe-mediated induction of phenylpropanoid cascade and induced systemic responses against Bipolaris sorokiniana (Sacc.) Shoemaker causing spot blotch disease in wheat (Triticum aestivum L.)
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Creator Udai B. Singha,b, *, Deepti Malviyab , Wasiullahb , Shailendra Singhb , Mohd. Imrana , Neelam Pathaka , Manzar Alama , Jai P. Raic , Rajiv K. Singhd , B.K. Sarmae , P.K. Sharmab , Arun K. Sharmab
 
Subject Phenylpropanoid biosynthesis cascade ISR Bipolaris sorokiniana Bacillus amyloliquefaciens Trichoderma harzianum Spot blotch
 
Description Not Available
Cell wall is one of the first lines of defence used by plants to restrict invading fungal pathogens. Lignin is a
complex polymer of hydroxylated and methoxylated phenylpropane units (monolignols). Cell wall
lignification can establish mechanical barriers to pathogen invasion and renders the cell wall more
resistant to pathogen attack. Compatible salt-tolerant rhizosphere microbe-mediated induction of
phenylpropanoid cascade and induced systemic responses against Bipolaris sorokiniana (Sacc.)
Shoemaker causing spot blotch disease in wheat (Triticum aestivum L.) is demonstrated and the details
are being shared through this paper. Twelve rhizospheric microbial strains were tested against Bipolaris
sorokiniana under in vitro condition on dual plate. Bacillus amyloliquefaciens B-16 and Trichoderma
harzianum UBSTH-501 showed maximum inhibition of mycelial growth of B. sorokiniana and was used in
further in planta assay. These selected antagonists were tested alone and in combination for induction of
phenylpropanoid cascade in wheat infected with B. sorokiniana. Results showed that plants co-inoculated
with B. amyloliquefaciens B-16 and T. harzianum UBSTH-501 up-regulated the phenylpropanoid cascade
and manifold increase was recorded in phenylalanine ammonia lyase (PAL), peroxidase, chitinase and
other enzymes related to induced systemic resistance. Results also showed that significantly higher
amounts of phenolic acids viz. gallic acid, ferulic acid were accumulated in the plant leaves co-inoculated
with B. amyloliquefaciens B-16 and T. harzianum UBSTH-501 as compared to individually inoculated and
uninoculated control plants. Histopathological studies showed significantly higher cell wall lignification
in plant leaves co-inoculated with B. amyloliquefaciens B-16 and T. harzianum UBSTH-501 than the plants
under control. These results illustrate that microbe-mediated up-regulation of phenylpropanoid
biosynthesis pathway is of critical importance for host defence against spot blotch pathogen invasion in
wheat
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Date 2024-06-24T16:15:49Z
2024-06-24T16:15:49Z
2016-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/83743
 
Language English
 
Relation Not Available;
 
Publisher Not Available