Exogenous jasmonic acid induces stress tolerance in tobacco (Nicotiana tabacum) exposed to imazapic

Autor: Zeynep Banu Doğanlar, Armagan Kaya
Rok vydání: 2015
Předmět:
0106 biological sciences
Chlorophyll
Antioxidant
Health
Toxicology and Mutagenesis
medicine.medical_treatment
Nicotiana tabacum
Glutathione reductase
Cyclopentanes
010501 environmental sciences
01 natural sciences
chemistry.chemical_compound
Ascorbate Peroxidases
Plant Growth Regulators
Malondialdehyde
Tobacco
medicine
Oxylipins
Abscisic acid
0105 earth and related environmental sciences
Glutathione Transferase
biology
Indoleacetic Acids
Herbicides
Orobanche
Jasmonic acid
Public Health
Environmental and Occupational Health
Imidazoles
Nicotinic Acids
Pesticide Residues
General Medicine
Glutathione
Imazapic
biology.organism_classification
Catalase
Pollution
Adaptation
Physiological
Carotenoids
Plant Leaves
Horticulture
Glutathione Reductase
chemistry
Biochemistry
biology.protein
010606 plant biology & botany
Zdroj: Ecotoxicology and environmental safety. 124
ISSN: 1090-2414
Popis: Jasmonic acid (JA) is one of the important phytohormones, regulating the stress responses as well as plant growth and development. The aim of this study is to determine the effects of exogenous JA application on stress responses of tobacco plant exposed to imazapic. In this study, phytotoxic responses resulting from both imazapic and imazapic combined with JA treatment are investigated comparatively for tobacco plants. For plants treated with imazapic at different concentrations (0.030, 0.060 and 0.120mM), antioxidant enzyme activities (catalase, ascorbate peroxidase, glutathione S-transferase and glutathione reductase), carotenoids, glutathione and malondialdehyte (MDA) contents, jasmonic acid, abscisic acid and indole-3-acetic acid levels as well as herbicide residue amounts on leaves increased in general compared to the control group. In the plants treated with 45µM jasmonic acid, pigment content, antioxidant activity and phytohormone level increased whereas MDA content and the amount of herbicidal residue decreased compared to the non-treated plants. Our findings show that imazapic treatment induces some phytotoxic responses on tobacco leaves and that exogenous jasmonic acid treatment alleviates the negative effects of herbicide treatment by regulating these responses.
Databáze: OpenAIRE
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