Diversity and Community Composition of Basidiomycete Ectomycorrhizal Fungi Associated with Quercus spp. Along an Elevation Gradient in Mt. Jiri
- 주제(키워드) Ectomycorrhizal fungi , Diversity , metabarcoding , Mt. Jiri
- 주제(DDC) 570
- 발행기관 아주대학교 일반대학원
- 지도교수 Sangkyu Park
- 발행년도 2025
- 학위수여년월 2025. 2
- 학위명 석사
- 학과 및 전공 일반대학원 생명과학과
- 실제URI http://www.dcollection.net/handler/ajou/000000034596
- 본문언어 영어
- 저작권 아주대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
Ectomycorrhizal (ECM) fungi play a key role in forming symbiotic relationships with tree roots, facilitating nutrient uptake and contributing to ecosystem stability, particularly in nutrient-limited environments. This study investigates the diversity and community composition of Basidiomycete ECM fungi associated with Quercus mongolica and Quercus serrata along an elevation gradient (1200–300 m) in Mt. Jiri, South Korea. A total of 34 genera of ECM fungi were identified from soil samples collected across three elevation classes (high, medium, low), with dominant genera including Russula, Inocybe, Clavulina, and Amanita. Alpha diversity analyses revealed significant differences in ECM fungal diversity between higher and lower elevations for Q. serrata, while diversity associated with Q. mongolica did not exhibit significant changes across elevations, despite notable shifts in community composition. Permutational multivariate analysis of variance (PERMANOVA) and nonmetric multidimensional scaling (NMDS) analyses demonstrated that environmental factors, particularly soil pH and organic matter content, significantly influenced fungal community composition and diversity. Host specificity also played a critical role, as Q. mongolica supported a more stable diversity, while Q. serrata exhibited greater sensitivity to environmental changes. This study suggests the importance of host- specific interactions and environmental gradients in shaping ECM fungal communities, providing insights into their ecological adaptations and responses to environmental change. These findings contribute to understanding the complex interactions among host plants, ECM fungi, and environmental variables, offering valuable implications for biodiversity conservation and forest ecosystem management.
more목차
1. Introduction 1
2. Materials and methods 4
2.1. Study site and sample collection 4
2.2. Environmental factors and soil chemical analyses 6
2.3. DNA extraction and PCR amplification 8
2.4. Bioinformatic analysis 9
2.5. Statistical analyses 9
3. Results 10
3.1. Composition of ECM fungal communities: basidiomycete dominance across elevation 10
3.2 Growth range of common genera of ECM fungi 16
3.3 Community composition by elevation and the influence of biotic and abiotic factors 19
3.4 ECM fungal alpha diversity: differences between Q. mongolica and Q. serrata 24
3.5 Correlation between ECM fungi and environmental variables 26
4. Discussion 28
References 33
Appendix 39
국문요약 43
