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Table 4 Properties of the seven barcoding regions of Gentiana and P. hexandrum

From: Evaluation of seven DNA barcodes for differentiating closely related medicinal Gentiana species and their adulterants

Property

Species

rbcL

matK

trnH-psbA

trnL-F

rpl36-rps8

ITS

5S rRNA

Average length (bp)

G. manshurica

553.0

716.0

482.5

760.5

319.0

693.0

455.3

G. scabra

553.0

716.0

482.5

759.0

319.0

693.0

455.6

G. triflora

553.0

716.0

482.0

762.5

319.0

693.0

456.7

G. rigescens

553.0

716.0

399.0

820.0

317.0

694.0

260.5

G. rhodantha

553.0

716.0

411.0

820.0

304.0

691.0

240.3

P. hexandrum

553.0

716.0

646.0

940.0

524.0

703.5

267.3

GC content (%)

G. manshurica

43.8

33.4

24.0

38.7

32.0

58.4

45.7

G. scabra

43.8

33.5

24.0

38.6

32.0

58.6

45.0

G. triflora

43.8

33.3

24.0

38.5

32.0

58.7

46.6

G. rigescens

43.5

33.5

27.5

36.7

30.0

58.4

49.7

G. rhodantha

43.4

33.2

26.5

34.4

32.0

57.6

53.7

P. hexandrum

42.9

34.4

26.0

34.4

37.0

51.0

41.5

Selected polymorphic site*

 

12233

1125

144

12599

1124

244

12234

 

05689

660128

56101

315966

551248

378418

3954472

 

666487

137062

840187

895856

066664

560905

9578946

G. manshurica

TCATAA

GTGGAC

TGAATT

ACGCAC

CCCCAG

GTAGCT

CCATGGG

TCATAA

GTGGAC

TGAATT

ACGCAC

CCCCAG

GTAGCT

CCATGGG

G. scabra

TCATAA

GTGGAC

TGAATT

ACGCGA

CCCCAG

GTAGCT

CCATGGG

TCATAA

GTGGAC

TGAATT

ACGCGA

CCCCAG

GTAGCT

CCATGGG

G. triflora

TCATAA

GTGGAC

TGAATT

ACGCAC

CCCCAG

GTAGCT

CCGAATC

TCATAA

GTGGAC

TGAATT

ACGCAC

CCCCAG

GTAGCT

CCGAATC

G. rigescens

TTAAAG

ACGGGG

TGGCAT

ACAGGA

CATTTG

GTGACG

C-G--CT

TTAAAG

ACGGGG

TGGCAT

ACAGGA

CATTTG

GTGACG

C-G--CT

G. rhodantha

TTGAGA

GTAGGC

TAGAAG

ATATGA

TCCTTC

GCTGTC

CTT--T-

TTGAGA

GTAGGC

TAGAAG

N/A

TCCTTC

GCTGTC

CTT--T-

P. hexandrum

CTCAGT

TTAAAT

CCGATT

GGAGGA

ACCTAA

ACTGCA

TTA--TT

CTCAGT

TTAAAT

CCGATT

GGAGGA

ACCTAA

ACTGCA

TTA--TT

  1. *The polymorphic site positions are shown in a vertical manner. For example, the first polymorphic site of rbcL is 6, and the second one is 106.
  2. The numbers above the polymorphic sites are their positions in the multiple sequence alignment. ‘–’ in the alignment represents a gap in the DNA sequence.