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Improving growth and photosynthetic performance of drought stressed tomato by application of nano-organic fertilizer involves up-regulation of nitrogen, antioxidant and osmolyte metabolism
- Source :
- Ecotoxicology and Environmental Safety, Vol 216, Iss, Pp 112195-(2021)
- Publication Year :
- 2020
-
Abstract
- Organic fertilizer usage is been introduced into agricultural practices for preventing the damaging effects of chemical fertilizers. Present study investigated the beneficial role of organic fertilizer (nano-vermicompost) on the growth, oxidative stress parameters, antioxidant and nitrogen metabolism, osmolyte accumulation and mineral elements in tomato under drought stress. Drought stress resulted in reduced growth and biomass accumulation by triggering oxidative stress due to excess accumulation of reactive oxygen species (ROS) and reduced mineral uptake. Application of nano-vermicompost proved significantly beneficial in improving growth and mitigating the drought induced growth decline. Nano-vermicompost increased growth and dry matter content and ameliorated the decline in chlorophyll contents, photosynthesis and PSII activity more significantly at higher concentration (100 mg kg−1 soil). ROS accumulation was significantly reduced by nano-vermicompost application thereby enhancing the membrane stability under normal as well as drought conditions. Furthermore, lipid peroxidation and activities of protease and lypoxygenase were significantly reduced. Drought up-regulated antioxidant system and application of nano-vermicompost further enhanced the activities of antioxidant enzymes and the contents of non-enzymatic antioxidant components. Accumulation of osmolytes including proline, glycine betaine and sugars increased significantly due to nano-vermicompost application. Besides, decline in the activity of nitrate reductase and content of essential mineral elements like nitrogen, potassium and phosphorous was also ameliorated by nano-vermicompost application.
- Subjects :
- Antioxidant
Health, Toxicology and Mutagenesis
medicine.medical_treatment
0211 other engineering and technologies
02 engineering and technology
010501 environmental sciences
Photosynthesis
Nitrate reductase
01 natural sciences
Tomato
Environmental pollution
Lipid peroxidation
chemistry.chemical_compound
Nano-vermicompost
medicine
GE1-350
Food science
Nitrogen cycle
Antioxidant system
0105 earth and related environmental sciences
021110 strategic, defence & security studies
Drought
Public Health, Environmental and Occupational Health
General Medicine
Pollution
Environmental sciences
Osmolytes
chemistry
TD172-193.5
Osmolyte
Chlorophyll
Organic fertilizer
Subjects
Details
- ISSN :
- 10902414
- Volume :
- 216
- Database :
- OpenAIRE
- Journal :
- Ecotoxicology and environmental safety
- Accession number :
- edsair.doi.dedup.....34db42a76f18e0659050737270711344