Effects of hybrid, kernel maturity, and storage period on the bacterial community in high-moisture and rehydrated corn grain silages.

•This is the first microbiome study of natural corn grain silage via IlluminaMiSeq.•There is a specific bacterial microbiome for silages linked with quality indicators.•Acetobacter and Lactobacillus were the dominant bacteria after ensiling.•Enterococcus and Clostridium were the dominant bacteria in rehydrated corn.•Plant maturity and storage affected the bacterial community of corn grain silages.