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Arbuscular mycorrhizal fungi-mediated activation of plant defense responses in direct seeded rice (Oryza sativa L.) against root-knot nematode Meloidogyne graminicola

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Title Arbuscular mycorrhizal fungi-mediated activation of plant defense responses in direct seeded rice (Oryza sativa L.) against root-knot nematode Meloidogyne graminicola
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Creator Deepti Malviya1† , Prakash Singh2* † , Udai B. Singh1† , Surinder Paul1 , Pradeep Kumar Bisen3 , Jai P. Rai4 , Ram Lakhan Verma5 , R. Abdul Fiyaz6 , A. Kumar7 , Poonam Kumari8 , Sailabala Dei7 , Mohd. Reyaz Ahmed9 , D. J. Bagyaraj10 and Harsh V. Singh1*
 
Subject AM fungi, root-knot nematode, rice (Oryza sativa L.), Meloidogyne graminicola, Funneliformis mosseae, Rhizophagus fasciculatus, Rhizophagus intraradices, plant defense
 
Description Not Available
Rhizosphere is the battlefield of beneficial and harmful (so called phytopathogens)
microorganisms. Moreover, these microbial communities are struggling for their
existence in the soil and playing key roles in plant growth, mineralization, nutrient
cycling and ecosystem functioning. In the last few decades, some consistent
pattern have been detected so far that link soil community composition and
functions with plant growth and development; however, it has not been studied
in detail. AM fungi are model organisms, besides potential role in nutrient
cycling; they modulate biochemical pathways directly or indirectly which lead
to better plant growth under biotic and abiotic stress conditions. In the present
investigations, we have elucidated the AM fungi-mediated activation of plant
defense responses against Meloidogyne graminicola causing root-knot disease in
direct seeded rice (Oryza sativa L.). The study describes the multifarious effects of
Funneliformis mosseae, Rhizophagus fasciculatus, and Rhizophagus intraradices
inoculated individually or in combination under glasshouse conditions in rice
plants. It was found that F. mosseae, R. fasciculatus and R. intraradices when
applied individually or in combination modulated the biochemical and molecular
mechanisms in the susceptible and resistant inbred lines of rice. AM inoculation
significantly increased various plant growth attributes in plants with simultaneous
decrease in the root-knot intensity. Among these, the combined application
of F. mosseae, R. fasciculatus, and R. intraradices was found to enhance the
accumulation and activities of biomolecules and enzymes related to defense
priming as well as antioxidation in the susceptible and resistant inbred lines of rice pre-challenged with M. graminicola. The application of F. mosseae, R. fasciculatus
and R. intraradices, induced the key genes involved in plant defense and signaling
and it has been demonstrated for the first time. Results of the present investigation
advocated that the application of F. mosseae, R. fasciculatus and R. intraradices,
particularly a combination of all three, not only helped in the control of root knot nematodes but also increased plant growth as well as enhances the gene
expression in rice. Thus, it proved to be an excellent biocontrol as well as plant
growth-promoting agent in rice even when the crop is under biotic stress of the
root-knot nematode, M. graminicola.
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Date 2024-06-24T16:37:21Z
2024-06-24T16:37:21Z
2023-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/83751
 
Language English
 
Relation Not Available;
 
Publisher Not Available