Bacterial communities as indicators of soil health under a continuous cropping system

作者：Guiying Shi, Hongqiang Sun, Alejandro Calderón‐Urrea, Li Mouqiang, Hongyu Yang, Wenzhu Wang, Guoli Su · 发表于：Land Degradation and Development · 年份：2021 · DOI：10.1002/ldr.3919 · 被引用次数：39 · 研究领域：Plant-Microbe Interactions and Immunity、Mycorrhizal Fungi and Plant Interactions、Legume Nitrogen Fixing Symbiosis

Abstract With growing global interest in the improvement of soil quality and the adoption of sustainable land management systems, there is an urgent need to find early indicators to monitor and manage sustainable soil health. Meta‐analyses provide useful information on microbial communities and community‐level molecular characteristics, which can be exploited as ‘biomarker’ indicators of ecosystem processes for soil health evaluation. Lanzhou lily ( Lilium davidii var. unicolor ) is the only type of sweet edible lily in China, as well as an endemic species with a narrow distribution. Due to its uses as food and in gardening, this lily has an economic value in the Country, particularly in Gansu Province located in the Loess Plateau. This lily is usually cultivated in long‐term continuous monoculture (replanting), resulting in the so‐called consecutive replanting problem (CRP), which is associated with severe soil degradation and significant yield and quality losses. This study was conducted to investigate the bacterial community structure and specific bacterial members related to the lily's CRPs and soil health degradation indicators via next‐generation sequence (NGS) analysis. The bacterial diversity of rhizosphere soil was analyzed by high‐throughput DNA sequencing (Miseq) of samples collected in fields at 0, 3, 6, and 9 replanting years (L0, L3, L6, and L9, respectively). Results showed that long‐term replanting significantly increased soil bacterial abundance and insignifi...