Abstract
We assessed the effects of arbuscular mycorrhizal fungi (AMF) Rhizophagus irregularis inoculation on salt stress tolerance in roots of the drought-tolerant plant Elaeagnus angustifolia. We studied a plant growth index, spore density and hyphal length density of AMF, the Na+ contents and ultrastructure of root cells, as well as rhizosphere soil enzyme activities of mycorrhizal and non-mycorrhizal E. angustifolia seedlings under different salt stress. Under salt stress, growth of E. angustifolia with mycorrhizal inoculation was higher than that of non-inoculated treatments. The spore density and hyphal length density decreased significantly under salt stress in rhizosphere soil of mycorrhizal E. angustifolia seedlings (p < 0.05). The root cells of E. angustifolia seedlings inoculated with R. irregularis at 300 mmol L−1 salt had more organelles, greater integrity, and lower root Na+ contents than those of non-inoculated seedlings. In addition, the results showed notably higher activities of catalase, phosphatase, urease and saccharase in rhizosphere soil of the mycorrhizal seedlings in response to salinity compared to those of the non-mycorrhizal seedlings. Therefore, AMF inoculation could enhance salt stress tolerance in roots of E. angustifolia.
Highlights
Salinity is one of the main abiotic factors that deleteriously affect plant development and yield (Elhindi et al 2017; Metwally and Abdelhameed 2018)
The purpose of this study was to explore the effects of salt stress on mycorrhizal E. angustifolia seedlings and whether inoculation with Arbuscular mycorrhizal fungi (AMF) could alleviate the toxicity of salt stress on plants
The growth of E. angustifolia inoculated with R. irregularis increased significantly under salt stress compared with non-mycorrhizal treatments (Table 1)
Summary
Salinity is one of the main abiotic factors that deleteriously affect plant development and yield (Elhindi et al 2017; Metwally and Abdelhameed 2018). Arbuscular mycorrhizal fungi (AMF) can establish mycorrhizal symbioses with most terrestrial plant species (Chang et al 2018; Xu et al 2016), which can lead to changes in the morphological, nutritional and physiological state of plants. These effects of AMF symbioses can enhance. The enhanced growth of AMF-treated tomato plants was associated with mycorrhizal-associated host plant nutrient uptake (Hashem et al 2015). The number of mycelia and vesicles, plus arbuscule formation and colonization were reduced significantly due to salt stress (Hashem et al 2018, 2019)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
