Seasonal Variation and Crop Sequences Shape the Structure of Bacterial Communities in Cysts of Soybean Cyst Nematode.

ABSTRACT: Soybean cyst nematode (SCN), Heterodera glycines Ichinohe, is the number 1 pathogen of the important economic crop soybean. Bacteria represent potential biocontrol agents of the SCN, but few studies have characterized the dynamics of bacterial communities associated with cysts under different crop rotation sequences. The bacterial communities in SCN cysts in a long-term soybean-corn crop rotation experiment were investigated over 2 years. The crop sequences included long-term soybean monoculture (Ss), years 1-5 of soybean following 5 years corn (S1-S5), years 1 and 2 of corn following 5 years soybean (C1 and C2), and soybean-corn annual rotation (Sa and Ca). The bacterial 16S rRNA V4 region was amplified from DNA isolated from SCN cysts collected in spring at planting, midseason (2

SUBMITTER: Hu W 

PROVIDER: S-EPMC6882411 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature