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Stage-dependent concomitant microbial fortification improves soil nutrient status, plant growth, antioxidative defense system and gene expression in rice

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Title Stage-dependent concomitant microbial fortification improves soil nutrient status, plant growth, antioxidative defense system and gene expression in rice
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Creator Singh, D.P., Singh, V., Shukla, R., Sahu P., Prabha, R., Gupta A., Sarma, B.K. and Gupta, V.K.,
 
Subject Microbial inoculants Concomitant inoculation Trichoderma Pseudomonas Plant growth promotion Soil fertility Gene expression Antioxidants
 
Description Not Available
Stage-dependent concomitant fortification of rice (Oryza sativa L.) varieties PB1612 and CO51 with microbial
inoculants Trichoderma asperellum and Pseudomonas fluorescens as seed coating, seedling root inoculation and soil
application enhanced growth, activated antioxidant enzymes and modulated defence-related genes in plants.
Microbial inoculants improved shoot height, tiller numbers, fresh weight and dry biomass. Co-inoculation was
more impactful in enhancing plant growth and development as compared to single inoculation. Single and coinoculation
improved organic carbon (OC) and N, P and K content in the soil substantially. Mean values between
control and co-inoculation varied significantly for OC in PB1612 (p0.001) and CO51 (p0.019) and phosphorus
content in PB1612 (p0.044) and CO51 (p0.021). Microbial inoculation enhanced soil nutrients and increased
their bioavailability for the plants. Total polyphenolics, flavonoids and protein content increased in the leaves
following microbial inoculation. Enhanced non-enzymatic antioxidant parameters (ABTS, DPPH, Fe-ion reducing
power and Fe-ion chelation) was found in microbe inoculated rice reflecting high free radical scavenging activity
in polyphenolics-rich leaf extracts. Increased enzyme activity of superoxide dismutase (SOD), glutathione reductase
(GR), phenylalanine ammonia-lyase (PAL), peroxidase (PO), glutathione peroxidase (GPX), ascorbate
peroxidase (APX) and catalase (CAT) showed improved ROS scavenging in rice plants having co-inoculation.
Over-expression of PAL, cCuZn-SOD and CAT genes in microbial inoculated rice plants was recorded. The study
concludes that plant stage-wise concomitant fortification by microbial inoculants could play multi-pronged
manifestations at physiological, biochemical and molecular level in rice to positively influence growth, development
and defense attributes in plants
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Date 2021-07-28T06:21:37Z
2021-07-28T06:21:37Z
2020-01-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/50524
 
Language English
 
Relation Not Available;
 
Publisher Not Available