1. Changes in microRNAs expression of flax ( Linum usitatissimum L.) planted in a cadmium-contaminated soil following the inoculation with root symbiotic fungi.
- Author
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Jamili S, Zalaghi R, and Mehdi Khanlou K
- Subjects
- Basidiomycota physiology, Mycorrhizae physiology, Cadmium metabolism, Flax metabolism, Flax microbiology, Flax genetics, Soil Pollutants metabolism, MicroRNAs metabolism, MicroRNAs genetics, Biodegradation, Environmental, Symbiosis, Plant Roots microbiology, Plant Roots metabolism
- Abstract
Cadmium is one of the most harmful heavy metals that harm agricultural products. Evaluating microRNAs expression is a new and accurate method to study plant response in various environmental conditions. So this study aimed to evaluate the contribution of two symbiotic fungi in improving flax tolerance in a Cd-polluted soil using microRNAs and their target gene expression. A factorial pot experiment in a completely randomized design was conducted with different levels of Cd (0, 20, and 40 mg kg
-1 ) on non-inoculated and inoculated flax with Claroideoglomus etunicatum and Serendipita indica . The results presented that increasing Cd levels caused a constant decline of alkaline phosphatase of soil (from 243 to 210 and 153 μg PNP g-1 h-1 ), respectively, from control (Cd0) to 20 and 40 mg Cd kg-1 . However, the inoculation of flax with fungi significantly enhanced these properties. A negative correlation was observed between the expression level of microRNA 167 and microRNA 398 with their corresponding target genes, auxin response factor 8 and superoxide dismutase zinc/copper 1, respectively. The expression level of both microRNAs and their targets indicated that the inoculation with symbiont fungi could diminish Cd stress and enhance the growth of flax.- Published
- 2024
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