文献类型： 外文期刊

作者： Na, Xiaofan ¹ ; Ma, Caixia ¹ ; Ma, Shaolan ¹ ; Ma, Xiaorong ¹ ; Zhu, Xiaomei ² ; Xu, Pengxin ¹ ; Zhu, Haibin ³ ; Cao, Xia ¹ ;

作者机构： 1.Ningxia Univ, Sch Life Sci, Yinchuan 750021, Peoples R China

2.Ningxia Univ, Sch Life Sci, Minist Educ Protect & Utilizat Special Biol Resou, Keb Lab, Yinchuan 750021, Peoples R China

3.Yinchuan Meteorol Bur, Yinchuan 750002, Peoples R China

4.Shanxi Acad Agr Sci, Inst Crop Germplasm Resources, Taiyuan 030031, Shanxi, Peoples R China

关键词： Bacterial community; Fungal community; Lycium barbarum L; Rhizosphere; Stand age

期刊名称：PLANT AND SOIL （ 影响因子：4.192； 五年影响因子：4.712 ）

ISSN： 0032-079X

年卷期： 2019 年 445 卷 1-2 期

页码：

收录情况： SCI

摘要： Aims Despite the high economic benefits of using an intensive agriculture system, the sustainable development of Lycium barbarum L. cultivation in Northwest China is hindered by serious negative plant-soil feedback, which may be paralleled by the variation in the microbial rhizosphere community. Methods Here, we assessed the shift in the bacterial and fungal rhizosphere communities of L. barbarum across a 20-year-old chronosequence of stands at two independent experimental sites in Ningxia, China via real-time PCR and high-throughput sequencing. Results Stand age significantly influenced the alpha-diversity and abundance of the fungal rhizosphere community (p < 0.05) but did not affect the bacterial community. Phytopathogenic fungi, including Alternaria, Fusarium, Gibberella, and Stemphylium, were progressively enriched in the rhizosphere as the plant aged. Structure equation model suggested that soil abiotic properties were the direct drivers for bacterial community, whereas stand age and edaphic factor coexplained the succession of the fungal rhizosphere community. Conclusion Long-term monocropping decoupled plant-bacteria interaction and strengthened the colonization of fungal phytopathogens in L. barbarum rhizosphere. This study presents novel assessments of the links between the shifts in microbial rhizosphere community and the negative plant-soil feedback of L. barbarum.