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Nano‐silicon dioxide mitigates the adverse effects of salt stress on Cucurbita pepo L

Siddiqui, Manzer H ; Al‐Whaibi, Mohamed H ; Faisal, Mohammad ; Al Sahli, Abdulaziz A

Environmental toxicology and chemistry, 2014-11, Vol.33 (11), p.2429-2437 [Periódico revisado por pares]

Pensacola, FL: Pergamon

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Título:
Nano‐silicon dioxide mitigates the adverse effects of salt stress on Cucurbita pepo L
Autor: Siddiqui, Manzer H ; Al‐Whaibi, Mohamed H ; Faisal, Mohammad ; Al Sahli, Abdulaziz A
Assuntos: adverse effects ; Agronomy. Soil science and plant productions ; Antioxidants ; Antioxidants - metabolism ; ascorbate peroxidase ; Ascorbate Peroxidases - chemistry ; Biological and medical sciences ; carbonate dehydratase ; catalase ; Catalase - metabolism ; Chlorophyll ; Chlorophyll - metabolism ; Chlorophylls ; Cucurbita - drug effects ; Cucurbita - metabolism ; Cucurbita pepo ; defense mechanisms ; Deficiencies. Phytotoxicity of elements. Salinity ; Dioxides ; electrolytes ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Germination ; Germination - drug effects ; glutathione-disulfide reductase ; Hydrogen peroxide ; Hydrogen Peroxide - chemistry ; leaves ; malondialdehyde ; Malondialdehyde - metabolism ; Nanoparticles ; Nanoparticles - chemistry ; Nanostructure ; Nanotechnology ; Oxygen - chemistry ; Peroxidase ; Peroxidases - metabolism ; photosynthesis ; Photosynthesis - drug effects ; Plant Leaves - drug effects ; Plant Roots - drug effects ; Plant toxicology ; proline ; roots ; Salinity ; salt stress ; seed germination ; Seeds ; Seeds - metabolism ; shoots ; Silicon Dioxide - chemistry ; sodium chloride ; Sodium Chloride - pharmacology ; Soil Pollutants - chemistry ; Soil toxicology ; Soil-plant relationships. Soil fertility. Fertilization. Amendments ; squashes ; stomatal conductance ; Stress response ; Stresses ; superoxide dismutase ; Superoxide Dismutase - metabolism ; Toxicity ; vigor ; Water - metabolism ; water use efficiency
É parte de: Environmental toxicology and chemistry, 2014-11, Vol.33 (11), p.2429-2437
Notas: http://dx.doi.org/10.1002/etc.2697
istex:FEAF4A8BD90851A2F46B7FE09610A3F458CC3CCD
Deanship of Scientific Research of King Saud University, Riyadh, Saudi Arabia to Research Group - No. RGPVPP-153
ark:/67375/WNG-7G78X3V2-N
ArticleID:ETC2697
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: Research into nanotechnology, an emerging science, has advanced in almost all fields of technology. The aim of the present study was to evaluate the role of nano‐silicon dioxide (nano‐SiO₂) in plant resistance to salt stress through improvement of the antioxidant system of squash (Cucurbita pepo L. cv. white bush marrow). Seeds treated with NaCl showed reduced germination percentage, vigor, length, and fresh and dry weights of the roots and shoots. However, nano‐SiO₂ improved seed germination and growth characteristics by reducing malondialdehyde and hydrogen peroxide levels as well as electrolyte leakage. In addition, application of nano‐SiO₂ reduced chlorophyll degradation and enhanced the net photosynthetic rate (Pₙ), stomatal conductance (gₛ), transpiration rate, and water use efficiency. The increase in plant germination and growth characteristics through application of nano‐SiO₂ might reflect a reduction in oxidative damage as a result of the expression of antioxidant enzymes, such as catalase, peroxidase, superoxide dismutase, glutathione reductase, and ascorbate peroxidase. These results indicate that nano‐SiO₂ may improve defense mechanisms of plants against salt stress toxicity by augmenting the Pₙ, gₛ, transpiration rate, water use efficiency, total chlorophyll, proline, and carbonic anhydrase activity in the leaves of plants. Environ Toxicol Chem 2014;33:2429–2437. © 2014 SETAC
Editor: Pensacola, FL: Pergamon
Idioma: Inglês

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Nano‐silicon dioxide mitigates the adverse effects of salt stress on Cucurbita pepo L

Siddiqui, Manzer H ; Al‐Whaibi, Mohamed H ; Faisal, Mohammad ; Al Sahli, Abdulaziz A

Pensacola, FL: Pergamon

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