Impact of Aspect on Arbuscular Mycorrhizal Fungal Diversity and Community Composition in a Natural Toona ciliata var. pubescens Forest in Subtropical China

The aspect can affect plant communities and soil physical chemical properties through different microclimates. However, little is known about the effect of on arbuscular mycorrhizal (AM) fungal diversity community composition, although AM fungi are beneficial for nutrient absorption natural restoration. In this study, distribution patterns in rhizosphere roots seven widespread plants a Toona ciliata var. pubescens (Tc) forest north-facing (NF) south-facing (SF) were investigated using Illumina PE250 high-throughput sequencing Guanshan National Nature Reserve, Jiangxi Province, China. Our results exhibited that did not but significantly affected structure composition. Glomeraceae was most common abundant family Tc forest. Glomeromycota sequence proportion root larger NF than SF (p < 0.05). relative abundance Acaulosporaceae differed with aspect, being greater addition, number sequences NF, while OTUs unclassified showed opposite trend (organic matter, nitrogen, potassium, phosphorus, pH) correlated these changes. These findings indicate habitat low insolation, high moisture, content might promote functional realization fungi; be proliferation preservation groups. This study provides important information ecological processes construction microbiological mechanisms forests.