Glomus mosseae symbiosis affects expression of stress-responsive genes in rice under water deficit conditions

Document Type : Research Paper


1 Genetics and Agricultural Biotechnology Institute of Tabarestan, Sari Agricultural Sciences and Natural Resources University

2 Genetics and Agricultural biotechnology Institute of Tabarestan (GABIT), Sari Agricultural Sciences and Natural Resources University (SANRU), Sari, Iran

3 Department of Soil Science, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

4 Department of plant protection, Sari University of agricultural sciences and natural resources, Sari, Iran


Arbuscular mycorrhizal fungi (AMF) symbiosis could mitigate the adverse effects of abiotic stresses in various plants. The aim of this study was to investigate the effect of AMF-inoculation on expression of several stress-responsive genes in two rice cultivars under different water conditions. The seedlings of Tarom-Hashemi and Nemat rice cultivars were transplanted in soil with or without G. mosseae spores. At the tilling stage, the AMF-inoculated (+AMF) and AMF-uninoculated (−AMF) plants were subjected to flooded and water deficit conditions (70% field capacity (FC) and 50%FC). The genes expression was evaluated by qRT-PCR and reported relative to control (flooded, -AMF) plants. The results showed lower expression of osDREB2A in +AMF plants in comparison with –AMF plants under water deficient conditions. The expression of OsPIP1;2 was significantly increased in roots of +AMF to –AMF plants. But, the expression of this gene was decreased in shoots of +AMF and –AMF plants in comparison with control plants. The stress-responsive gene transcripts, OsPIP2;3, OsGH3-8, OsLTP, OsAOS2 and OsADC1 in +AMF rice cultivars was higher than -AMF plants at both water deficit conditions. Expression of OsP5CS in +AMF and –AMF plants was increased in comparison with control plants, though, their differences was not significant. In 70%FC, OsEXP15 gene expression of +AMF and –AMF root plants was increased in comparison with control plants. However, under 50%FC the gene expression was decreased and not changed in -AMF and +AMF plants, respectively. It seems AMF induced changes in rice genes expression may enhance tolerance to water deficit conditions.


Main Subjects

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