College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
Jiangsu Coastal Area Institute of Agricultural Sciences, Yancheng, 224002, Jiangsu, China.
Braz J Microbiol. 2021 Jun;52(2):801-809. doi: 10.1007/s42770-021-00486-3. Epub 2021 Apr 4.
Ectomycorrhizas play a fundamental role in the function of forest ecosystems, being essential for plant nutrition absorption and soil quality. Many afforestation and reforestation programmes have begun to recover and maintain coastal forests in China, using pine species including Pinus thunbergii. We investigated the ectomycorrhizal colonization status of P. thunbergii in coastal pine forests of the Yellow Sea of China. We identified a total of 53 ectomycorrhizal fungal species in 74 soil samples collected from three sites and found that Thelephoraceae (10 spp.) and Russulaceae (8 spp.) were the most species-rich ectomycorrhizal fungal lineages. Russula sp. 1 was the most abundant species, accounting for 15.3% of the total ectomycorrhizal tips identified. Most of the remaining species were rare. At this small scale, host identity had no significant effect on the ectomycorrhizal fungal community composition (A = 0.036, P = 0.258), but sampling sites did (A = 0.135, P = 0.041). In addition, Na and K content and soil pH had significant effects on the ectomycorrhizal fungal community. The ectomycorrhizal fungal community associated with different host plants will become an important new direction for research, as ectomycorrhiza may have the potential to improve host capacity to establish in salt-stressed environments. This will provide a theoretical basis and technical support for saline soil reforestation and rehabilitation using pine species with compatible, native ectomycorrhizal fungi in Yellow Sea coastal areas.
外生菌根在森林生态系统的功能中起着基础性作用，对植物营养吸收和土壤质量至关重要。许多造林和再造林计划已经开始在中国恢复和维护沿海森林，使用包括黑松（Pinus thunbergii）在内的松树物种。我们调查了中国黄海沿海松林黑松的外生菌根定殖状况。我们从三个地点共采集了 74 个土壤样本，共鉴定出 53 种外生菌根真菌，发现栓菌科（10 种）和红菇科（8 种）是外生菌根真菌最丰富的类群。红菇属 1 号种是最丰富的物种，占鉴定出的总外生菌根尖端的 15.3%。其余大部分物种都很稀有。在这种小尺度上，宿主身份对外生菌根真菌群落组成没有显著影响（A = 0.036，P = 0.258），但采样地点有影响（A = 0.135，P = 0.041）。此外，Na 和 K 含量以及土壤 pH 值对外生菌根真菌群落有显著影响。与不同宿主植物相关的外生菌根真菌群落将成为一个重要的新研究方向，因为外生菌根可能有潜力提高宿主在盐胁迫环境中的定植能力。这将为黄海沿海地区使用与黑松具有相容性的本地外生菌根真菌进行盐渍土造林和修复提供理论依据和技术支持。
