Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
土壤类型对紫花苜蓿根系形态及根际真菌群落的 影响及其环境驱动机制. |
| Alternate Title: |
Effects of Soil Types on Root Morphology and Rhizosphere Fungal Communities of Alfalfa (Medicago sativa L. ) and Their Environmental Driving Mechanisms. |
| Συγγραφείς: |
魏天娇1 tianjiao25@126.com, 滕星1, 解娇1, 王秀飞1, 王彦靖1, 赵新颖1, 祝延立1, 崔彦如1, 梁正伟2, 李忠和1 lzhlizh@163.com |
| Πηγή: |
Science Technology & Engineering. 2026, Vol. 26 Issue 25, p10745-10750. 6p. |
| Θεματικοί όροι: |
*Soil classification, *Rhizosphere microbiology, *Nitrogen, *Organic compound content of soils, *Sandy soils, *Alfalfa growing, *Soil acidity, *Soil salinity |
| Abstract (English): |
To investigate the effects of different soil types on the rhizosphere fungal community structure of alfalfa (Medicago sativa L.) and their driving mechanisms, a pot experiment was employed to systematically compare the response differences in root morphology, soil chemical properties, and rhizosphere fungal community structure of alfalfa seedlings grown in aeolian sandy soil and saline-alkaline soil from western Jilin Province. The results indicate that, compared to aeolian sandy soil, saline-alkaline soil significantly inhibits alfalfa root growth. The reductions in root parameters follow the order: root volume, root surface area, root length, and root tip number, with root volume showing the most substantial decrease. Although the soil pH under saline-alkaline conditions is significantly lower, the contents of available nitrogen, available phosphorus, available potassium, total nitrogen, and total phosphorus are all significantly higher than those in the aeolian sandy soil. At the phylum level, the rhizosphere fungal communities in both soil types are primarily dominated by Ascomycota, Basidiomycota, and Mortierellomycota. The fungal diversity index significantly increases in the soda saline soil, while the community coverage index decreases. Correlation analysis reveals that the relative abundance of Ascomycota shows a significantly positive correlation with soil available nitrogen. In contrast, the relative abundance of Basidiomycota is negatively correlated with soil pH and available nitrogen but positively correlated with soil organic carbon. The relative abundance of Mortierellomycota exhibits a significantly positive correlation with soil organic carbon. In conclusion, the composition and diversity of the rhizosphere fungal community recruited by alfalfa differ significantly under different soil conditions. This variation is primarily regulated by key soil environmental factors, including pH, available nitrogen, and organic carbon. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
为探究不同土壤类型对紫花苜蓿根际真菌群落结构的影响及驱动机制, 采用盆栽试验, 系统比较了吉林省西部风沙 土与苏打盐碱土中紫花苜蓿幼苗的根系形态, 土壤化学性质及根际真菌群落结构的响应差异。 结果表明, 与风沙土相比, 苏 打盐碱土显著抑制了紫花苜蓿根系生长, 根体积, 根表面积, 根长和根尖数均呈下降趋势, 其中根体积降幅最为明显。 同时, 虽然该土壤 pH 较低, 但速效氮, 速效磷, 速效钾, 总氮和总磷含量均显著高于风沙土。 根际真菌群落以子囊菌门, 担子菌门和 被孢霉门为主, 在苏打盐碱土中真菌多样性指数显著增加, 而群落覆盖度指数降低。 相关性分析发现, 子囊菌门相对丰度与 土壤速效氮呈极显著正相关; 担子菌门与土壤 pH 呈极显著负相关, 与速效氮呈显著负相关, 而与土壤有机碳呈显著正相关; 被孢霉门则与土壤有机碳呈极显著正相关。 综上, 紫花苜蓿在不同土壤中招募的根际真菌群落结构与多样性存在显著差异, 主要受土壤 pH, 速效氮和有机碳的协同调控. [ABSTRACT FROM AUTHOR] |
| Βάση Δεδομένων: |
Academic Search Index |