The Plant Pathology Journal

한국식물병리학회 (The Korean Society of Plant Pathology)
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Transcriptomic Insights into Abies koreana Drought Tolerance Conferred by Aureobasidium pullulans AK10

  • Jungwook Park (Department of Integrated Biological Science, Pusan National University) ;
  • Mohamed Mannaa (Department of Integrated Biological Science, Pusan National University) ;
  • Gil Han (Department of Integrated Biological Science, Pusan National University) ;
  • Hyejung Jung (Department of Integrated Biological Science, Pusan National University) ;
  • Hyo Seong Jeon (Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University) ;
  • Jin-Cheol Kim (Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University) ;
  • Ae Ran Park (Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University) ;
  • Young-Su Seo (Department of Integrated Biological Science, Pusan National University)
  • 투고 : 2023.11.22
  • 심사 : 2023.12.03
  • 발행 : 2024.02.01
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초록

The conservation of the endangered Korean fir, Abies koreana, is of critical ecological importance. In our previous study, a yeast-like fungus identified as Aureobasidium pullulans AK10, was isolated and shown to enhance drought tolerance in A. koreana seedlings. In this study, the effectiveness of Au. pullulans AK10 treatment in enhancing drought tolerance in A. koreana was confirmed. Furthermore, using transcriptome analysis, we compared A. koreana seedlings treated with Au. pullulans AK10 to untreated controls under drought conditions to elucidate the molecular responses involved in increased drought tolerance. Our findings revealed a predominance of downregulated genes in the treated seedlings, suggesting a strategic reallocation of resources to enhance stress defense. Further exploration of enriched Kyoto Encyclopedia of Genes and Genomes pathways and protein-protein interaction networks revealed significant alterations in functional systems known to fortify drought tolerance, including the terpenoid backbone biosynthesis, calcium signaling pathway, pyruvate metabolism, brassinosteroid biosynthesis, and, crucially, flavonoid biosynthesis, renowned for enhancing plant drought resistance. These findings deepen our comprehension of how AK10 biostimulation enhances the resilience of A. koreana to drought stress, marking a substantial advancement in the effort to conserve this endangered tree species through environmentally sustainable treatment.

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과제정보

This study was supported by the Research and Development Program for Forest Science Technology (Project No. FTIS 2021334B10-2323-CD02) and was provided by the Korea Forest Service (Korea Forestry Promotion Institute).

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