Abstract：
:In this study, ITS, ITS2, matK, rbcL and psbA-trnH in Rehmannia were successfully amplified and sequenced, but some ITS sequences need to be proofread according to ITS2 sequences. Compared with rbcL, matK and psbA-trnH, ITS and ITS2 had higher mutation rate and more information sites, and ITS2 had higher interspecific diversity and lower intraspecific variation in Rehmannia, but the interspecific genetic variation of rbcL and matK was lower. Furthermore, the obvious barcoding gap was found in psbA-trnH or ITS2 + psbA-trnH, and the overlap between interspecific and intraspecific variation of ITS, ITS2 or matK was less. In addition, the phylogenetic tree based on ITS or ITS2 indicated that R. glutinosa, R. chingii or R. henryi with obvious monophyly could be successfully identified, but R. piasezkii and R. elata were clustered into one branch, R. solanifolia could not be distinguished from R. glutinosa, and R. chingii was closer to R. henryi. In phylogenetic tree based on psbA-trnH or ITS2 + psbA-trnH, cultivars and wild varieties of R. glutinosa could be distinguished, were clearly separated from other Rehmannia species, and cultivars or wild varieties of R. glutinosa could be also distinguished by matK. Taken together, ITS2 has great potential in systematic study and species identification of Rehmannia, the combination of ITS2 and psbA-trnH might be the most suitable DNA barcode for Rehmannia species.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Duan H,Wang W,Zeng Y,Guo M,Zhou Ydoi
10.1038/s41598-019-53752-8subject
Has Abstractpub_date
2019-11-21 00:00:00pages
17295issue
1issn
2045-2322pii
10.1038/s41598-019-53752-8journal_volume
9pub_type
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