SU Yan,CHENG Bo,HE Jiang,et al.Cluster Analysis of Ziziphora bungeana from Different Geographical Populations Based on ITS2 and psbA-trnH Sequences[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(16):175-182.
SU Yan,CHENG Bo,HE Jiang,et al.Cluster Analysis of Ziziphora bungeana from Different Geographical Populations Based on ITS2 and psbA-trnH Sequences[J].Chinese Journal of Experimental Traditional Medical Formulae,2020,26(16):175-182. DOI: 10.13422/j.cnki.syfjx.20201614.
Cluster Analysis of Ziziphora bungeana from Different Geographical Populations Based on ITS2 and psbA-trnH Sequences
To analyze the internal transcribed spacer(ITS)2 and
psbA-trnH
sequences of
Ziziphora
bungeana
in 18 different geographic populations
in order to provide reference about evaluation of germplasm resources and analysis of genetic diversity of medicinal plants.
Method
2
Genomic DNAs of the
Z. bungeana
were extracted by kit method. Polymerase chain reaction(PCR)was used to amplify ITS2 and
psbA-trnH
interstitial region sequences,bidirectional sequencing,splicing,and constructing Neighbor-joining(NJ) based on Kimura 2-parameter(K2P) model.
Result
2
All of sequences of ITS2 and
psbA-trnH
of
Z. bungeana
in different geographic populations showed intraspecific variations. The average ITS2 sequence length of
Z. bungeana
was 236 bp,9 haplotypes were detected,and the genetic distance was 0-0.022.
Z. bungeana
of different geographical groups gathered into two branches,10 geographic populations
including XTH3,XTH6 and XTH9
were considered as one branch,while 8 geographic populations
including XTH4,XTH5 and XTH10
were the other branch. In addition to XTH6 that lacked 6 in bp
psbA-trnH
sequence,all of the other geographic populations had a 355 bp sequence of
psbA-trnH
,4 haplotypes were detected,and the genetic distance was 0-0.023. 12 geographic populations
such as XTH1,XTH3,XTH4
gathered into one branch,while XTH14,XTH17 and XTH18 gathered into the other branch. NJ tree based on ITS2+
psbA-trnH
combination sequence showed that
Z. bungeana
of different geographical populations could be divided into two branches,with 12 geographical populations
like XTH11,XTH12,XTH16 as one branch
and XTH14,XTH17 and XTH18 as the other branch.
Conclusion
2
Near or similar geographical locations of different geographical populations implies relatively short genetic distance and relatively close genetic relationship,which indicates that genetic relationship and genetic diversity of
Z. bungeana
in different geographical populations are related to geographical locations.
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Related Author
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Related Institution
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