Transcriptome analysis reveals the mechanisms for mycorrhiza-enhanced salt tolerance in rice

• DOI: 10.3389/fpls.2022.1072171
• Publication Date: 2022-12-19T12:54:52Z
• Authors: Chen Hsieh; Yun-Hsin Chen; Kai-Chieh Chang; Shu-Yi Yang
• Keywords: Pi homeostasis; 0301 basic medicine; 2. Zero hunger; Plant culture; Plant Science; Arbuscular mycorrhizal symbiosis; 15. Life on land; salinity; SB1-1110; 03 medical and health sciences; cell wall; Oryza sativa L.; transcriptome

More than half of the global population relies on rice as a staple food, but salinization soil presents great threat to cultivation. Although previous studies have addressed possible benefits arbuscular mycorrhizal (AM) symbiosis for under salinity stress, underlying molecular mechanisms are still unclear. In this study, we found that had better shoot and reproductive growth significantly higher K+/Na+ ratio in shoot. The reactive oxygen species (ROS) scavenging capacity shoots was also improved by AM symbiosis. To elucidate required AM-improved salt tolerance, transcriptome analysis revealing differentially expressed genes (DEGs) based response symbiosis, or specific tissue performed. Thirteen percent DEGs showed tissue-preferred responses both stress might be key contributing AM-enhanced tolerance. Gene Ontology (GO) enrichment identified GO terms specifically appearing category, including cell wall, oxidoreductase activity, reproduction ester-related terms. Interestingly, related phosphate (Pi) homeostasis were found, suggesting role Pi-related signaling pathway involved Intriguingly, nonsaline conditions, influenced expression these similar way salinity, especially shoots. Overall, our results indicate may possibly use multipronged approach influence gene modification could help plants prepared stress.