How arbuscular mycorrhizal fungi influence the defense system of sunflower during different abiotic stresses.
Identifieur interne : 000D25 ( Main/Exploration ); précédent : 000D24; suivant : 000D26How arbuscular mycorrhizal fungi influence the defense system of sunflower during different abiotic stresses.
Auteurs : Zoltán Mayer [Hongrie] ; Nguyen Hong Duc [Hongrie] ; Zita Sasvári [Hongrie] ; Katalin Posta [Hongrie]Source :
- Acta biologica Hungarica [ 0236-5383 ] ; 2017.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , biosynthesis : Oxidoreductases, Plant Proteins.
- metabolism : Helianthus, Mycorrhizae.
- Gene Expression Regulation, Enzymologic, Gene Expression Regulation, Plant, Stress, Physiological.
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.
DOI: 10.1556/018.68.2017.4.4
PubMed: 29262715
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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<term>Mycorrhizae (metabolism)</term>
<term>Oxidoreductases (biosynthesis)</term>
<term>Plant Proteins (biosynthesis)</term>
<term>Stress, Physiological (MeSH)</term>
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<term>Mycorhizes (métabolisme)</term>
<term>Oxidoreductases (biosynthèse)</term>
<term>Protéines végétales (biosynthèse)</term>
<term>Régulation de l'expression des gènes codant pour des enzymes (MeSH)</term>
<term>Régulation de l'expression des gènes végétaux (MeSH)</term>
<term>Stress physiologique (MeSH)</term>
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<term>Mycorrhizae</term>
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<term>Mycorhizes</term>
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<front><div type="abstract" xml:lang="en">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.</div>
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<Abstract><AbstractText>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.</AbstractText>
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