Analysis on SSR information in Camellia sinensis transcriptome
A total of 127 094 unigenes derived from deep sequencing of camellia sinensis transcriptome were used for the development of functional SSR molecular markers.Overall,12 242 SSRs distributed in 10 325 unigenes were detected,accounting for 9.63% of all the unigenes.The average length and distribution distance of the transcriptomic SSRs are about 16 bp and 3.68 kb,respectively.There are 181 kinds of repeat motifs existing in the tea plant transcriptome,and the dinucleotide repeats are the main types,accounting for 63.78% of all the SSRs.CT/AG and TC/GA are the most frequent motifs,accounting for 23.84% and 23.58% in all the SSR repeat motifs,respectively.The potential of the transcriptomic SSRs for further usage and research was assessed.