Arbuscular mycorrhizal influence on growth, photosynthetic pigments, osmotic adjustment and oxidative stress in tomato plants subjected to low temperature stress

2010 ◽  
Vol 33 (4) ◽  
pp. 1217-1225 ◽  
Author(s):  
Arafat Abdel Hamed Abdel Latef ◽  
He Chaoxing
Keyword(s):  
Oxidative Stress ◽  
Low Temperature ◽  
Temperature Stress ◽  
Photosynthetic Pigments ◽  
Osmotic Adjustment ◽  
Arbuscular Mycorrhizal ◽  
Low Temperature Stress ◽  
Tomato Plants ◽  
And Oxidative Stress

Effects of arbuscular mycorrhizal inoculation on osmoregulation and antioxidant responses of blueberry plants

2019 ◽  
Vol 48 (3) ◽  
pp. 641-647 ◽  
Author(s):  
Jia-Le Tu ◽  
Xiao-Min Liu ◽  
Jia-Xin Xiao
Keyword(s):  
Low Temperature ◽  
Temperature Stress ◽  
Soluble Sugar ◽  
Arbuscular Mycorrhizal ◽  
Am Fungi ◽  
Low Temperature Stress ◽  
Vaccinium Ashei ◽  
Antioxidant Responses ◽  
Antioxidant Content ◽  
Mycorrhizal Inoculation

Effects of the arbuscular mycorrhizal (AM) fungi, Glomus mosseae, G. intraradices, and G. etunicatum, on plant growth, antioxidant content, osmoregulation, and nutrition were investigated in ‘Premier’ blueberry (Vaccinium ashei) plants exposed to low-temperature stress. Low temperature decreased mycorrhizal colonization, growth, levels of leaf soluble sugar, ascorbic acid (ASA) and root viability. However, at low temperatures, levels of leaf superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) were found to increase, accompanied by increases in levels of ASA, malondialdehyde (MDA), and proline. G. mosseae especially, significantly increased levels of SOD, POD, CAT and ASA, but decreased levels of MDA in plants. AM-inoculated plants had higher contents of proline, soluble sugar, phosphorus, potassium, calcium and magnesium than non-AM-inoculated plants, especially in the G. mosseae-inoculated plants. These results indicate that G. mosseae has the potential to enhance resistance of ‘Premier’ blueberry plants against low-temperature stress through improving antioxidant content, osmotic adjustment and mineral nutrition.

Arbuscular mycorrhizal fungi alleviate low-temperature stress and increase freezing resistance as a substitute for acclimation treatment in barley

2019 ◽  
Vol 70 (3) ◽  
pp. 218 ◽  
Author(s):  
Roghieh Hajiboland ◽  
Arshad Joudmand ◽  
Nasser Aliasgharzad ◽  
Roser Tolrá ◽  
Charlotte Poschenrieder
Keyword(s):  
Survival Rate ◽  
Low Temperature ◽  
Arbuscular Mycorrhizal Fungi ◽  
Temperature Stress ◽  
Mycorrhizal Fungi ◽  
Membrane Integrity ◽  
Arbuscular Mycorrhizal ◽  
Climatic Conditions ◽  
Low Temperature Stress ◽  
Acclimation Treatment

Barley (Hordeum vulgare L.) is cultivated globally under a wide range of climatic conditions and is subjected to chilling and freezing stresses under temperate and cold climatic conditions. As a mycorrhizal crop, barley may benefit from this association for increasing cold resistance. In order to investigate the effects of inoculation with arbuscular mycorrhizal fungi (AMF) on cold-stress resistance in barley plants, one winter and one spring cultivar were grown under control (25°C day, 17°C night) and low, non-freezing (LT: 5°C day, 3°C night) temperatures for 3 weeks in the absence (−AMF) or presence (+AMF) of two species of AMF, Glomus versiforme and Rhizophagus irregularis. In addition, the influence of LT (as an acclimation treatment) was studied on plant survival after a 2-day exposure to freezing temperature (FT: −5°C in dark). Biomass production, membrane integrity and survival rate of plants indicated that the winter cultivar was more tolerant than the spring cultivar. Inoculation with AMF resulted in improved growth, photosynthesis, osmotic and water homeostasis, and potassium uptake under both control and LT conditions, whereas the effect on membrane integrity, antioxidative defence and phenolics metabolism was mainly observed in LT plants. AMF inoculation substituted partially or completely for acclimation treatment and increased the survival rate of FT plants, with the highest survival achieved in a combination of AMF and LT. Mycorrhizal responsiveness was higher in LT plants. Despite the lower AMF colonisation, G. versiforme was often more effective than R. irregularis for the alleviation of low temperature stress in both cultivars, whereas R. irregularis was more effective in increasing the survival rate. Our data suggest that the right combination of fungus species and host-plant cultivar is important for successful utilisation of AMF under cold conditions.

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