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Soil bacterial and fungal community dynamics in relation to Panax notoginseng death rate in a continuous cropping system.


ABSTRACT: Notoginseng (Panax notoginseng), a valuable herbal medicine, has high death rates in continuous cropping systems. Variation in the soil microbial community is considered the primary cause of notoginseng mortality, although the taxa responsible for crop failure remains unidentified. This study used high-throughput sequencing methods to characterize changes in the microbial community and screen microbial taxa related to the death rate. Fungal diversity significantly decreased in soils cropped with notoginseng for three years. The death rate and the fungal diversity were significantly negatively correlated, suggesting that fungal diversity might be a potential bioindicator of soil health. Positive correlation coefficients revealed that Burkholderiales, Syntrophobacteraceae, Myrmecridium, Phaeosphaeria, Fusarium, and Phoma were better adapted to colonization of diseased plants. The relative abundance of Fusarium oxysporum (R?=?0.841, P?

SUBMITTER: Dong L 

PROVIDER: S-EPMC4994099 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Soil bacterial and fungal community dynamics in relation to Panax notoginseng death rate in a continuous cropping system.

Dong Linlin L   Xu Jiang J   Feng Guangquan G   Li Xiwen X   Chen Shilin S  

Scientific reports 20160823


Notoginseng (Panax notoginseng), a valuable herbal medicine, has high death rates in continuous cropping systems. Variation in the soil microbial community is considered the primary cause of notoginseng mortality, although the taxa responsible for crop failure remains unidentified. This study used high-throughput sequencing methods to characterize changes in the microbial community and screen microbial taxa related to the death rate. Fungal diversity significantly decreased in soils cropped with  ...[more]

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