SRX305001 GSM1161949 GSM1161949: control; Zea mays; RNA-Seq SRP025991 GSE47886 SRS444325 GSM1161949 RNA-Seq TRANSCRIPTOMIC size fractionation Total RNA was isolated from whole plants using Trizol (Invitrogen, CA, USA) as described by the manufacturer. TruSeq Small RNA Sample Prep Kit Illumina Genome Analyzer IIx http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSM1161949 gds 301161949 GEO Accession GSM1161949 SRX305002 GSM1161950 GSM1161950: inoculated with diazothrophic bacteria; Zea mays; RNA-Seq SRP025991 GSE47886 SRS444326 GSM1161950 RNA-Seq TRANSCRIPTOMIC size fractionation Total RNA was isolated from whole plants using Trizol (Invitrogen, CA, USA) as described by the manufacturer. TruSeq Small RNA Sample Prep Kit Illumina Genome Analyzer IIx http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSM1161950 gds 301161950 GEO Accession GSM1161950 SRX495759 GSM1350854 GSM1350854: control_rep2; Zea mays; RNA-Seq SRP025991 GSE47886 SRS577929 GSM1350854 RNA-Seq TRANSCRIPTOMIC size fractionation Total RNA was isolated from whole plants using Trizol (Invitrogen, CA, USA) as described by the manufacturer. TruSeq Small RNA Sample Prep Kit Illumina Genome Analyzer IIx http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSM1350854 gds 301350854 GEO Accession GSM1350854 SRX495760 GSM1350855 GSM1350855: inoculated with diazothrophic bacteria_rep2; Zea mays; RNA-Seq SRP025991 GSE47886 SRS577930 GSM1350855 RNA-Seq TRANSCRIPTOMIC size fractionation Total RNA was isolated from whole plants using Trizol (Invitrogen, CA, USA) as described by the manufacturer. TruSeq Small RNA Sample Prep Kit Illumina Genome Analyzer IIx http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSM1350855 gds 301350855 GEO Accession GSM1350855