Table 3 Variability in length and GC-content. Comparison of selected functional elements and domains within the rDNA repeat unit between the analyzed species. GC – content of GC pairs in an analyzed nucleotide sequence. In the case of species where more than one putative TIS was found, the variant with the shortest 5′ETS was considered.

From: Phylogenetic implications of nuclear rRNA IGS variation in Stipa L. (Poaceae)

Species

rDNA

ITS1

ITS2

IGS

3′ETS + NTS

5′ETS

GC, %

Length, bp

GC, %

Length, bp

GC, %

Length, bp

GC, %

Length, bp

GC, %

Length, bp

GC, %

Length, bp

Stipa caucasica

58.5

7991

73.3

221

76.2

206

61.2

2193

59.5

1513

65.0

680

S. lipskyi

58.7

8451

73.8

221

75.7

206

61.1

2653

59.4

1969

65.9

684

S. magnifica

58.8

8897

72.9

221

 

207

61.2

3098

60.0

2414

65.6

684

S. narynica

58.7

8844

74.9

221

73.8

207

60.9

3045

59.5

2361

65.7

684

S. orientalis

58.4

8038

71.5

221

75.2

206

61.0

2239

59.5

1558

64.8

681

S. pennata

58.6

8031

71.0

221

75.1

205

61.7

2233

60.5

1556

64.4

677

Brachypodium distachyon

58.3

8078

63.5

222

69.0

216

62.9

2271

64.0

1392

61.1

879

Oryza sativa

55.0

7923

72.2

198

70.1

2357

69.6

1254

70.5

1103

Setaria italica

56.1

7779

57.4

209

61.5

213

57.3

1991

53.9

1212

62.6

779

Sorghum bicolor

54.3

8689

56.1

212

68.1

116

53.6

2952

53.5

2307

54.2

645

Zea mays

59.7

8795

69.9

219

74.1

216

62.5

3421

60.4

2591

69.2

830