نتایج جستجو برای: its1 58s its2
تعداد نتایج: 2517 فیلتر نتایج به سال:
The aim of the study was the molecular analysis of ITS1/5.8S rRNA/ITS2 region of Trichomonas gallinae isolates from racing pigeon lofts in Upper Silesia, Poland. The analysed region is very useful for the taxonomy of the Trichomonadidae family and indicates the possible existence of different genotypes or species within the T. gallinae. A comparison of the complete ITS1-5.8S-ITS2 region of obta...
The specific identification of Lymnaeid snails is based on a comparison of morphological characters of the shell, radula, renal and reproductive organs. However, the identification is complicated by dissection process, intra and interspecific similarity and variability of morphological characters. In the present study, polymerase chain reaction and restriction fragment length polymorphism (PCR-...
BACKGROUND Multilocus PCR coupled with electrospray ionization mass spectrometry (PCR/ESI-MS) is a new strategy for pathogen identification, but information about its application in fungal identification remains sparse. METHODS One-hundred and twelve strains and isolates of clinically important fungi and Prototheca species were subjected to both rRNA gene sequencing and PCR/ESI-MS. Three regi...
We introduce an open source software utility to extract the highly variable ITS1 and ITS2 subregions from fungal nuclear ITS sequences, the region of choice for environmental sampling and molecular identification of fungi. Inclusion of parts of the neighbouring, very conserved, ribosomal genes in the sequence identification process regularly leads to distorted results. The utility is available ...
Despite many publications about Chlorella-like algae, their reliable and accurate identification is still difficult due to simplicity high phenotypic plasticity. The molecular approach has revolutionized our understanding of the diversity ’small green balls’, a natural classification this group currently being developed. This work aimed at providing detailed study phylogenetic position, morphol...
background: accurate identification of sheep nematodes is a critical point in epidemiological studies and monitoring of drug resistance in flocks. however, due to a close morphological similarity between the eggs and larval stages of many of these nematodes,such identification is not a trivial task. there are a number of studies showing that molecular targets in ribosomal dna (internal transcri...
The eukaryotic ribosomal DNA cluster consists of multiple copies of three genes, 18S, 5. 8S and 28S rRNAs, separated by multiple copies of two internal transcribed spacers, ITS1 and ITS2. It is an important, frequently used marker in both molecular cytogenetic and molecular phylogenetic studies. Despite this, little is known about intragenomic variations within the copies of eukaryotic ribosoma...
زیره سیاه گیاه علفی و چندساله از خانواده چتریان است و رویشگاه طبیعی آن به ایران و تعداد کمی از کشورهای همسایه محدود میشود. با هدف ارزیابی تنوع ژنتیکی زیره سیاه ایران، نه اکوتیپ این گیاه از مناطق مختلف کشور جمعآوری شد و ناحیه ITS2 و همچنین ناحیه ITS1-5.8s rRNA- ITS2 روی آنها تکثیر و تعیین توالی شد. توالیها به روش ClustalW توسط نرمافزار MegAlign همردیفسازی شده و دندروگرام روابط فیلوژنیک و...
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