Analysis of the first and second internal transcribed spacer sequences of the ribosomal DNA in Biomphalaria tenagophila complex (Mollusca: Planorbidae)

AbstractFor the first time, DNA sequence data were obtained for three species of Trichostrongylus from Russia. Internal transcribed spacer (ITS-2) of ribosomal DNA was sequenced for T. axei, T. colubriformis and T. probolurus from sheep from the Moscow region. ITS-2 rDNA length was estimated as 238 nucleotides for T. colubriformis and T. probolurus and 237 nucleotides for T. axei. The G+C content of the ITS-2 sequences of T. colubriformis, T. axei and T. probolurus were 31 %, 32 % and 34 % respectively. The level of interspecific differences in ITS-2 of rDNA of T. axei, T. probolurus and T. colubriformis ranged from 3 to 4 %. The ITS-2 sequences from the Russian specimens were compared with those of T. axei, T. probolurus and T. colubriformis from Australia and Germany. Intraspecific variation ranged from 0 % in T. colubriformis to 3.0 % in T. axei.

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Phylogenetic analyses of Nitella subgenus Tieffallenia (Charales, Charophyceae) using nuclear ribosomal DNA internal transcribed spacer sequences

Phycologia ◽

10.2216/i0031-8884-43-6-672.1 ◽

2004 ◽

Vol 43 (6) ◽

pp. 672-681 ◽

Cited By ~ 14

Author(s):

Hidetoshi Sakayama ◽

Yoshiaki Hara ◽

Shogo Arai ◽

Hiroshi Sato ◽

Hisayoshi Nozaki

Keyword(s):

Ribosomal Dna ◽

Internal Transcribed Spacer ◽

Phylogenetic Analyses ◽

Nuclear Ribosomal Dna ◽

Internal Transcribed Spacer Sequences

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Intraspecific Variation of Second Internal Transcribed Spacer of Nuclear Ribosomal DNA Among Populations of Anopheles (Kerteszia) cruzii (Diptera: Culicidae)

Journal of Medical Entomology ◽

10.1603/0022-2585(2007)44[538:ivosit]2.0.co;2 ◽

2007 ◽

Vol 44 (3) ◽

pp. 538-542 ◽

Cited By ~ 7

Author(s):

Rosely Dos S. Malafronte ◽

Mauro T. Marrelli ◽

Corália C. L. Ramirez ◽

Maíra N. Nassar ◽

Osvaldo Marinotti

Keyword(s):

Intraspecific Variation ◽

Ribosomal Dna ◽

Internal Transcribed Spacer ◽

Nuclear Ribosomal Dna ◽

Second Internal Transcribed Spacer

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A molecular phylogeny of Arceuthobium (Viscaceae) based on nuclear ribosomal DNA internal transcribed spacer sequences

American Journal of Botany ◽

10.1002/j.1537-2197.1994.tb15609.x ◽

1994 ◽

Vol 81 (9) ◽

pp. 1149-1160 ◽

Cited By ~ 39

Author(s):

Daniel L. Nickrent ◽

Kevin P. Schuette ◽

Ellen M. Starr

Keyword(s):

Molecular Phylogeny ◽

Ribosomal Dna ◽

Internal Transcribed Spacer ◽

Nuclear Ribosomal Dna ◽

Internal Transcribed Spacer Sequences

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Acrocordiella omanensis sp. nov. (Requienellaceae, Xylariales) from the Sultanate of Oman

Phytotaxa ◽

10.11646/phytotaxa.338.3.7 ◽

2018 ◽

Vol 338 (3) ◽

pp. 294

Author(s):

SAJEEWA S. N. MAHARACHCHIKUMBURA ◽

KEVIN D. HYDE ◽

REKHANI H. PERERA ◽

ABDULLAH M. AL-SADI

Keyword(s):

Ribosomal Dna ◽

Internal Transcribed Spacer ◽

Large Subunit ◽

Nuclear Ribosomal Dna ◽

Morphological Data ◽

Sultanate Of Oman ◽

Green Mountain ◽

Al Jabal Al Akhdar ◽

Internal Transcribed Spacer Sequences

Acrocordiella omanensis sp. nov. is described and illustrated from specimens on dead stem of Juniper sp. collected in Al Jabal al-Akhdar (Green Mountain), Sultanate of Oman. It strongly resembles Acrocordiella occulta, the type of the genus, in its similar asci and ascospore anatomy. It differs from A. occulta in having bell-shaped to cap-like clypeus around the ostiole and larger asci and ascospores. The combined large subunit nuclear ribosomal DNA and internal transcribed spacer sequences support the conclusions based on the morphological data.

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