Organic management practices shape the structure and associations of soil bacterial communities in tea plantations
Organic management practices shape the structure and associations of soil bacterial communities in tea plantations
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DOI：
10.1016/j.apsoil.2021.103975
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发表时间：
2021-04-27
影响因子：
4.8
通讯作者：
Han, Wenyan
中科院分区：
文献类型：
--
作者：
Gui, Heng;Fan, Lichao;Han, Wenyan
作物管理实践可以强烈影响土壤微生物群落及其生态系统服务，但目前尚不清楚这些影响如何扩展到不同的农业生态系统环境，例如茶园。对中国东部的配对茶园（有机管理与传统管理）进行比较，以研究农业管理如何影响土壤理化参数、土壤细菌群落的组成、多样性和组装。与常规管理相比，武夷茶园和象上茶园的土壤微生物碳平均增加了164.4%，土壤微生物氮增加了482.9%。 16S rRNA焦磷酸测序分析结果显示，两种管理下细菌群落的多样性和丰富度相似，但茶园管理类型（R2 = 0.410，p < 0.01）和地理起源（R2 = 0.268，p < 0.01）显着重塑了土壤细菌群落结构。共现网络分析发现，有机管理削弱了茶园土壤细菌类群之间的连通性，表明传统管理实践下微生物关联更加稳定。这些结果强调了管理和地质起源在重塑茶园土壤细菌结构中的重要性。
Crop management practices can strongly affect soil microbial communities and their ecosystem services, but it remains unclear how these effects extend to different agroecosystem contexts, such as in tea plantations. A comparison of paired tea plantations (organic vs. conventional managements) in Eastern China was conducted to investigate the ways in which agricultural management can affect soil physicochemical parameters, composition, diversity and assembly of soil bacterial communities. Compared with conventional management, organically managed tea plantations on average increased soil microbial C by 164.4% and soil microbial N by 482.9%, respectively in Wuyi and Xiangshang sites. The results of 16S rRNA pyrosequencing analyses revealed that the diversity and richness of bacterial communities was similar under both managements, but the structure of soil bacterial communities was significantly reshaped by the management type (R2 = 0.410, p < 0.01) used in the tea plantation as well as geographical origin (R2 = 0.268, p < 0.01). Co-occurrence network analysis uncovered that organic management weakened the connectivity among soil bacteria taxa in tea plantations, indicating more stable microbial associations under conventional management practices. These results emphasized the importance of management and geological origins in reshaping soil bacterial structures in tea plantations.