Arbuscular mycorrhizal fungi enhances salinity tolerance of Panicum turgidum Forssk by altering photosynthetic and antioxidant pathways

Journal of plant interactions

article

Abeer Hashem¹  Elsayed Fathi Abd_Allah³  Abdulaziz A. Alqarawi³  Abdullah Aldubise³  Dilfuza Egamberdieva⁴ 

[1] Mycology and Plant Disease Survey Department, Plant Pathology Research Institute, Agriculture Research Center;Botany and Microbiology Department, Faculty of Science, King Saud University;Department of Plant Production, College of Food & Agricultural Sciences, King Saud University;Institute for Landscape Biogeochemistry, Leibniz Centre for Agricultural Landscape Research (ZALF)

关键词: Panicum turgidum;    AM fungi;    salinity tolerance;    antioxidants;    enzymes;   

DOI  :  10.1080/17429145.2015.1052025

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

Present experiments were conducted to assess the response of Panicum turgidum to salinity and possible role of arbuscular mycorrhizal fungi (AMF) in enhancing the salt tolerance. The activities of antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione reductase (GR) and compatible solutes were increased by salt stress and were further enhanced by AMF inoculation. Hydrogen peroxide and malonaldehyde content increased in salt-stressed plants while a reduction was observed due to AMF inoculation. Salt-stressed plants showed higher activities of pyruvate orthophosphate dikinase (PPDK), phosphoenolpyruvate carboxylase (PEPC) and malate dehydrogenase as compared to control and AMF-inoculated plants. Salt stress caused significant decrease in phosphorous, potassium and calcium uptake but an increase in sodium uptake was observed. AMF alleviate salinity-induced negative impact on the plant growth and nutrient uptake by reducing the oxidative damage through strengthening of the antioxidant system.

【 授权许可】

CC BY|CC BY-NC