Assessment of the effect of silicon on antioxidant enzymes in cotton plants by multivariate analysis

Autor: Carlos Alberto Moldes, Siu Mui Tsai, María Lía Molas, Soraya Gabriela Kiriachek, José Manuel Camiña, Oscar Fontão de Lima Filho
Rok vydání: 2013
Předmět:
Silicon
Antioxidant
medicine.medical_treatment
Cotton
medicine.disease_cause
Plant Roots
Antioxidants
purl.org/becyt/ford/1 [https]
Lipid peroxidation
chemistry.chemical_compound
Ascorbate Peroxidases
Hydroponics
Stress
Physiological
Botany
purl.org/becyt/ford/1.4 [https]
medicine
Food science
Antioxidant Enzimes
Peroxidase
chemistry.chemical_classification
Gossypium
biology
Abiotic stress
Ciencias Químicas
food and beverages
General Chemistry
APX
Catalase
Enzymes
Otras Agricultura
Silvicultura y Pesca
Plant Leaves
Oxidative Stress
Enzyme
chemistry
CIENCIAS AGRÍCOLAS
purl.org/becyt/ford/4.1 [https]
Multivariate Analysis
biology.protein
Química Analítica
Lipid Peroxidation
Agricultura
Silvicultura y Pesca
General Agricultural and Biological Sciences
CIENCIAS NATURALES Y EXACTAS
purl.org/becyt/ford/4 [https]
Oxidative stress
Zdroj: CONICET Digital (CONICET)
Consejo Nacional de Investigaciones Científicas y Técnicas
instacron:CONICET
ISSN: 1520-5118
Popis: Silicon has been extensively researched in relation to the response of plants to biotic and abiotic stress, as an element triggering defense mechanisms which activate the antioxidant system. Furthermore, in some species, adding silicon to unstressed plants modifies the activity of certain antioxidant enzymes participating in detoxifying processes. Thus, in this study, we analyzed the activity of antioxidant enzymes in leaves and roots of unstressed cotton plants fertilized with silicon (Si). Cotton plants were grown in hydroponic culture and added with increasing doses of potassium silicate; then, the enzymatic activity of catalase (CAT), guaiacol peroxidase (GPOX), ascorbate peroxidase (APX), and lipid peroxidation were determined. Using multivariate analysis, we found that silicon altered the activity of GPOX, APX, and CAT in roots and leaves of unstressed cotton plants, whereas lipid peroxidation was not affected. The analysis of these four variables in concert showed a clear differentiation among Si treatments. We observed that enzymatic activities in leaves and roots changed as silicon concentration increased, to stabilize at 100 and 200 mg Si L–1 treatments in leaves and roots, respectively. Those alterations would allow a new biochemical status that could be partially responsible for the beneficial effects of silicon. This study might contribute to adjust the silicon application doses for optimal fertilization, preventing potential toxic effects and unnecessary cost. Fil: Moldes, Carlos Alberto. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Lima Filho, Oscar Fontão de. Embrapa Agroindustrial Tropical - CNPAT; Brasil Fil: Camiña, José Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; Argentina. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Kiriachek, Soraya Gabriela. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Molas, María Lía. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Tsai, Siu Mui. Universidade de Sao Paulo; Brasil
Databáze: OpenAIRE
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