Diversity and spatiotemporal dynamics of fungal communities in the rhizosphere soil of Lycium barbarum L.: a new insight into the mechanism of geoherb formation

Abstract

Lycium barbarum L. is a well-known traditional geoherb in Ningxia, China. The fruits of L. barbarum contain several dietary constituents, and thus, they exert many beneficial effects on human health. However, a few studies have been conducted on the geoherb L. barbarum and its rhizosphere soil fungal community. In this study, we determined the physicochemical properties and fungal community structure of rhizosphere soil of L. barbarum from three regions of China, namely Ningxia (NX), Qinghai (QH), and Xinjiang (XJ), during three development stages of L. barbarum. Soil pH varied between 7.56 and 8.60 across the three regions, indicating that alkaline soil is conducive to the growth of L. barbarum. The majority of soil properties in NX, an authentic geoherb-producing area, were substantially inferior to those in XJ and QH during all three developmental stages. Total sugar, polysaccharide (LBP), and flavonoid contents were the highest in wolfberry fruits from NX. High-throughput sequencing showed that the abundance of the soil fungal population in NX was higher than that in QH and XJ during the flowering and fruiting stage and summer dormant stage. Moreover, the soil fungal diversity increased with the development of wolfberry. Ascomycota and Mortierellomycota were the predominant phyla in the rhizosphere fungal communities in all samples. Redundancy analysis showed a significant correlation of the soil-available phosphorus and LBP of wolfberry fruits with the fungal community composition. The characteristics of rhizosphere fungal communities determined in the present study provide insights into the mechanism of geoherb formation in NX wolfberry.

Research on the Influence of DNN-Based Cross-Media Data Analysis on College Students’ New Media Literacy

“…However, without effective abstraction techniques, it is difficult for users to digest the hot topics and key information they care about. Integrating cross-media information [ 10 ] into topics provides users with an easy way to understand real events that have occurred and enhance user experience. Cross-media topic detection is a technique for summarizing unstructured cross-media data.…”

Differentially enriched fungal communities in root rot resistant and susceptible varieties of tobacco (Nicotiana tabacum L.) under continuous monoculture cropping

“…Previous studies reported that the decrease in Ascomycota abundance was associated with a decreased incidence of Fusarium wilt ( Yao and Wu, 2010 ; Shen et al, 2015 ). Some Mortierella species have been reported to be hostile for plant diseases such as root rot or potato scab and exhibited disease suppression characteristics ( Li et al, 2022 ). So, the higher abundance of Ascomycota and lower abundance of Mortierellomycota might have played a role in the increased disease incidence rate and disease index observed in susceptible variety under continuous mono-cropping.…”

Effects of nitrogen input on soil bacterial community structure and soil nitrogen cycling in the rhizosphere soil of Lycium barbarum L.

“…Long-term application of chemical fertilizers may be one of the main factors that change fungal community structure and the interaction between replanted Chinese wolfberry roots and fungi in fields under continuous cropping ( Ma et al, 2019 ). To solve the problem of the continuous cropping barrier of wolfberry, research on microorganisms of the rhizosphere of wolfberry was conducted by screening the growth-promoting bacteria and AMF (arbuscular mycorrhizal fungi; Chen et al, 2022 ; He et al, 2022 ; Li et al, 2022a ).…”