Diversity of Archaeal Communities in the Rhizosphere Soil of Desert Relict Plant Ammopiptanthus mongolicus
The relict Ammopiptanthus mongolicus is the only evergreen broad-leaf and strong xero-phytic shrub in the desert of Western Ordos.Archaea constitute an essential component of the soil micro-bial system and play a crucial role in soil biogeochemistry cycles,influencing plant growth,productivity,adaptability,diversity,and health.Studying the archaeal community in the soil coexisting with Ammopip-tanthus mongolicus roots for tens of millions of years is particularly significant for the scientific preservation of Ammopiptanthus mongolicus in maintaining the stability of the fragile desert ecosystem in West Ordo.This study aimed to investigate the dynamics of archaeal communities in different rhizosphere soil compart-ments of Ammopiptanthus mongolicus by analyzing the diversity and composition of archaeal communities in bare soil,bulk soil,and rhizosphere soil using high-throughput sequencing technology.The results showed that the nutrient element content in the rhizosphere soil of Ammopiptanthus mongolicus compared to that in bare soil and bulk soil,the diversity and richness of archaeal communities in the bulk soil were higher than those in bare soil and rhizosphere soil.The Nitrososphaeraceae family of the order Nitrosos-phaeria and phylum Thaumarchaeota were the dominant groups of archaeal communities in the rhizosphere soil of Ammopiptanthus mongolicus.However,the relative abundance of unclassified_f__Nitrososphaeraceae was higher,and the relative abundances of norank_f__Nitrososphaeraceae and Candidatus_Nitrososphaera were lower in locations close to the rhizosphere.The archaea in the rhizosphere soil originated from the bulk soil,but only 48.8%of the archaea in the bulk soil came from bare soil,whereas the rest came from a non-soil environment.Therefore,the archaeal communities in the rhizosphere soil of Ammopiptanthus mongolicus mainly participated in nitrosation during ammonia oxidation in the soil nitrogen cycle.Ammopip-tanthus mongolicus significantly affected the archaeal communities in the rhizosphere soil compartments.
Ammopiptanthus mongolicusArchaeal communitiesDiversityDesert of Western Ordos
万方数据
维普
