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Poster

Session: Session 2 Presenting Authors at Posters (Evens)

P-410 - Exploring the Relationship Between Beneficial Microbes and Root Redox Homeostasis in Arabidopsis-Microbe-Stress Interactions

Thursday, July 17, 2025
13:30 - 15:15  
Location: Confex Hall 3
Plant Regulation of biotic and abiotic stress – trade-offs

    Author(s)

  • CH

    Chia-Cheng Hsieh

    Program in Plant Health Care, Academy of Circular Economy, National Chung Hsing University
    Nantou, Nantou, Taiwan (Republic of China)

  • HC

    Han-Wei Chen

    Associate Researcher
    Crop Genetic Resources and Biotechnology Division, Taiwan Agricultural Research Institute, Ministry of Agriculture, Taichung, Taiwan
    Taichung, Taichung, Taiwan (Republic of China)

  • JH

    Jenn-Wen Huang, PhD

    Professor
    Program in Plant Health Care, Academy of Circular Economy, National Chung Hsing University, Nantou 540216, Taiwan; Department of Plant Pathology, National Chung Hsing University, Taichung City 402202, Taiwan
    Taichung City, Taichung, Taiwan (Republic of China)

  • PC

    Pi-Fang Linda Chang

    Professor
    Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan; Program in Plant Health Care, Academy of Circular Economy, National Chung Hsing University, Nantou, Taiwan; Master Program in Plant Medicine and Good Agricultural Practice, National Chung Hsing University, Taichung, Taiwan
    Taichung, Taichung, Taiwan (Republic of China)

    • Presenting Author(s)

  • TC

    Tao-Ho Chang, PhD

    Assistant Professor
    Program in Plant Health Care, Academy of Circular Economy, National Chung Hsing University
    Nantou City, Nantou, Taiwan (Republic of China)

Plants frequently encounter abiotic stress challenges due to global climate change. Our study examines how beneficial microbes influence Arabidopsis root tissues under stress conditions. Our research examined the beneficial traits of diverse microbes including Bacillus spp., Streptomyces spp., Trichoderma spp. and Rhodopseudomonas spp. Using Arabidopsis expressing redox-sensitive GFP (roGFP2), the results demonstrated that different microbes affect root redox states variably across root regions. Bacillus mycoides BM103 reduced oxidation in root tissues under normal conditions. Heat stress generally decreased oxidation in microbe-treated tissues, whereas drought stress induced microbe-specific patterns. Analysis of the "Arabidopsis-BM103-stress" transcriptome identified 19 genes potentially responding to BM103 treatment under stress conditions. The spatial distribution of redox changes in root tissues suggests that beneficial microbes may employ different strategies when interacting with plants under stress. Additionally, phenotypic assessments showed that certain microbes enhanced root development under stressed conditions and improved leaf area and fresh weight in mature plants. These observations suggest beneficial microbes influence plant responses to stress through various physiological and molecular pathways, which could contribute to our understanding of plant-microbe interactions and inform the development of microbial approaches for sustainable agriculture.