Internal transcribed spacer region evolution in Larix and Pseudotsuga (Pinaceae)

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Internal transcribed spacer region evolution in Larix and Pseudotsuga (Pinaceae).

The nuclear ribosomal DNA (nrDNA) internal transcribed spacer (ITS) region has been characterized in the sister genera Larix and Pseudotsuga (Pinaceae). Complete sequences were obtained for seven species of Larix from North America and Eurasia and five species of Pseudotsuga from western North America and eastern Asia. ITS region lengths ranged from 1759 to 1770 bp in Larix and from 1564 to 157...

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Lettuce is belong to the Cichorium family with leaf consumption, Annual cold weather plants and rich in minerals, vitamins and nutrients. The aim of the present study was to evaluate the genetic diversity of 15 varieties and lettuce populations using the ITS area. Sequence quality was evaluated using Chromas 2.1.1 software, aligned by MegAlign 5 software and then similarity matrix and dendrogra...

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The internal transcribed spacer region of belonolaimus (nemata: belonolaimidae).

Belonolaimus isolates from six U.S. states were compared by restriction endonuclease digestion of amplified first internal transcribed spacer region (ITS1) of the nuclear ribosomal genes. Seven restriction enzymes were selected for evaluation based on restriction sites inferred from the nucleotide sequence of a South Carolina Belonolaimus isolate. Amplified product size from individuals of each...

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STRUCTURE AND EVOLUTION OF THE rDNA INTERNAL TRANSCRIBED SPACER (ITS) REGION 2 IN THE SYMBIOTIC DINOFLAGELLATES (SYMBIODINIUM, DINOPHYTA)

Internal transcribed spacer (ITS) regions of the eukaryotic rDNA operon are integral to the correct processing and maturation of rRNAs. To further understand the evolution of this region, we elucidated the secondary structure of ITS2 from representatives of the eight divergent clades of Symbiodinium Freud., a large genus of dinoflagellate endosymbionts occurring in association with zooxanthella...

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Intra-Genomic Internal Transcribed Spacer Region Sequence Heterogeneity and Molecular Diagnosis in Clinical Microbiology

Internal transcribed spacer region (ITS) sequencing is the most extensively used technology for accurate molecular identification of fungal pathogens in clinical microbiology laboratories. Intra-genomic ITS sequence heterogeneity, which makes fungal identification based on direct sequencing of PCR products difficult, has rarely been reported in pathogenic fungi. During the process of performing...

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ژورنال

عنوان ژورنال: American Journal of Botany

سال: 1999

ISSN: 0002-9122

DOI: 10.2307/2656581