菌物学报2026，Vol.45Issue(2)：46-61,16.DOI:10.13346/j.mycosystema.250121
中国北方春坤山野韭Allium ramosum根际土和根系AM真菌的多样性及其影响因素
AM fungal community diversity and its relationships with environmental factors in the rhizosphere soil and roots of Allium ramosum in North China
摘要
Abstract
Arbuscular mycorrhiza(AM)plays crucial roles in terrestrial ecosystems.This study employed high-throughput sequencing to analyze the structure and diversity,ecological distribution patterns,and relationships with soil factors of AM fungal communities in the rhizosphere soil and roots of Allium ramosum at different elevations on Chunkun Mountain in North China.In total,1 431 amplicon sequence variants(ASVs)belonging to 95 AM fungal virtual taxa(VTs)encompassing 7 families and 8 genera were obtained from rhizosphere soil and root samples.Among these,the genus Ambispora was exclusively detected in the rhizosphere soil.The genus with the highest relative abundance was Glomus,and Claroideoglomus was the next.Altitude significantly influenced the diversity of AM fungal communities in the rhizosphere soil and roots of A.ramosum.The Chao1 indices for both roots and rhizosphere soil,together with the root Shannon index,peaked in the middle altitude range,whereas the Shannon index of rhizosphere soil reached its highest value in the high-altitude range.The AM fungal alpha diversity index in the rhizosphere soil was significantly higher than that in the roots(P<0.05),suggesting that roots exhibit selectivity towards symbiotic AM fungi.The results of the redundancy analysis(RDA)and the Monte Carlo permutation test indicated that soil organic carbon is a key driving factor for the arbuscular mycorrhizal(AM)fungal communities in the rhizosphere soil and roots of A.ramosum(P<0.001).Total phosphorus also had highly significant influence on the AM fungal community in rhizosphere soil(P<0.001).This study provides reference for the further development and utilization of A.ramosum.关键词
丛枝菌根真菌/群落结构/海拔/土壤/野韭Key words
arbuscular mycorrhizal fungi/community structure/altitude/soil/Allium ramosum引用本文复制引用
王一鸣,王启,刘广达..中国北方春坤山野韭Allium ramosum根际土和根系AM真菌的多样性及其影响因素[J].菌物学报,2026,45(2):46-61,16.基金项目
内蒙古自治区自然科学基金(2025MS08129) （2025MS08129）
内蒙古自治区高等学校科学技术研究项目(NJZY22086) （NJZY22086）
包头医学院科学研究发展基金(BYJJ-GCJH202504) This work was supported by the Natural Science Foundation of Inner Mongolia Autonomous Region of China(2025MS08129),the Research Program of Science and Technology at Universities of Inner Mongolia Autonomous Region(NJZY22086),and the Research and Development Funds of Baotou Medical College(BYJJ-GCJH202504). （BYJJ-GCJH202504）
