Kim Jea Hyeoung, Bae Eun-Kyung, Hue Yoeguang, Choi Byungheon, Kang Min-Jeong, Park Eung-Jun, Kim Ki-Tae
Department of Plant Medicine, Sunchon National University, Suncheon 57922, Republic of Korea.
Forest Microbiology and Application Division, Forest Bioresources Department, National Institute of Forest Science, Suwon 16631, Republic of Korea.
J Fungi (Basel). 2024 Oct 29;10(11):746. doi: 10.3390/jof10110746.
, a highly valued ectomycorrhizal fungus, requires a symbiotic relationship with pine trees for growth, complicating its cultivation. This study presents a comprehensive comparative genomic analysis of species, with a focus on . Genomic data from 19 assemblies representing 13 species were analyzed to identify genus-, species-, and strain-specific genes, revealing significant evolutionary adaptations. Notably, exhibits a higher proportion of repetitive elements compared to other species, with retrotransposons like LTR Gypsy dominating its genome. Phylogenomic analyses showed that forms a monophyletic group closely related to . Gene family expansion and contraction analyses highlighted the unique evolutionary pressures on , particularly the loss of tryptophan-related metabolic pathways and the gain of genes related to iron ion homeostasis, which may be crucial for its adaptation to nutrient-limited environments. Additionally, the reduction in secreted proteins and carbohydrate-active enzymes reflects the host-dependent lifestyle of and related species. These findings enhance our understanding of the genetic and evolutionary mechanisms underlying the complex symbiotic relationships of , offering potential avenues for optimizing its cultivation and commercial value.
一种备受重视的外生菌根真菌，生长需要与松树建立共生关系，这使其栽培变得复杂。本研究对该物种进行了全面的比较基因组分析，重点关注[具体内容缺失]。分析了代表13个物种的19个基因组组装的基因组数据，以鉴定属、种和菌株特异性基因，揭示了显著的进化适应性。值得注意的是，与其他物种相比，[具体物种缺失]表现出更高比例的重复元件，长末端重复序列反转录转座子如LTR Gypsy在其基因组中占主导地位。系统发育基因组分析表明，[具体物种缺失]形成了一个与[具体物种缺失]密切相关的单系群。基因家族扩张和收缩分析突出了[具体物种缺失]所面临的独特进化压力，特别是色氨酸相关代谢途径的丧失以及与铁离子稳态相关基因的获得，这可能对其适应营养有限的环境至关重要。此外，分泌蛋白和碳水化合物活性酶的减少反映了[具体物种缺失]及相关物种依赖宿主的生活方式。这些发现增进了我们对[具体物种缺失]复杂共生关系背后的遗传和进化机制的理解，为优化其栽培和商业价值提供了潜在途径。
