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Park J, Mannaa M, Han G, Jung H, Jeon HS, Kim JC, Park AR, Seo YS. Transcriptomic Insights into Abies koreana Drought Tolerance Conferred by Aureobasidium pullulans AK10. THE PLANT PATHOLOGY JOURNAL 2024; 40:30-39. [PMID: 38326956 PMCID: PMC10850533 DOI: 10.5423/ppj.ft.11.2023.0161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 11/30/2023] [Accepted: 12/03/2023] [Indexed: 02/09/2024]
Abstract
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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Affiliation(s)
- Jungwook Park
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Korea
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Mohamed Mannaa
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Korea
- Department of Plant Pathology, Cairo University, Faculty of Agriculture, Giza 12613, Egypt
| | - Gil Han
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Korea
| | - Hyejung Jung
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Korea
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Hyo Seong Jeon
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Korea
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Korea
| | - Ae Ran Park
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Science, Chonnam National University, Gwangju 61186, Korea
| | - Young-Su Seo
- Department of Integrated Biological Science, Pusan National University, Busan 46241, Korea
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