How arbuscular mycorrhizal fungi influence the defense system of sunflower during different abiotic stresses.
Acta Biol Hung
; 68(4): 376-387, 2017 Dec.
Article
em En
| MEDLINE
| ID: mdl-29262715
ABSTRACT
The association between terrestrial plants and arbuscular mycorrhizal (AM) fungi is one of the most common and widespread mutualistic plant-fungi interaction. AM fungi are of beneficial effects on the water and nutrient uptake of plants and increase plant defense mechanisms to alleviate different stresses. The aim of this study was to determine the level of polyphenol oxidase (PPO), guaiacol peroxidase (POX) and glutathione S-transferase (GST) enzyme activities and to track the expression of glutathione S-transferase (GST) gene in plant-arbuscular mycorrhizal system under temperature- and mechanical stress conditions. Our results suggest that induced tolerance of mycorrhizal sunflower to high temperature may be attributed to the induction of GST, POX and PPO enzyme activities as well as to the elevated expression of GST. However, the degree of tolerance of the plant is significantly influenced by the age which is probably justified by the energy considerations.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Oxirredutases
/
Proteínas de Plantas
/
Estresse Fisiológico
/
Regulação Enzimológica da Expressão Gênica
/
Regulação da Expressão Gênica de Plantas
/
Micorrizas
/
Helianthus
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article