نتایج جستجو برای: like retrotransposons 1451bp length in rye

تعداد نتایج: 17074294  

2017
Felix Horns Elsa Petit Michael E. Hood

Transposable elements (TEs) are selfish, autonomously replicating DNA sequences that constitute a major component of eukaryotic genomes and contribute to genome evolution through their movement and amplification. Many fungal genomes, including the anther-smut fungi in the basidiomycete genus Microbotryum, have genome defense mechanisms, such as repeat-induced point mutation (RIP), which hypermu...

Journal: :Plant physiology 2001
C M Vicient M J Jääskeläinen R Kalendar A H Schulman

A large fraction of the genomes of grasses, members of the family Graminae, is composed of retrotransposons. These elements resemble animal retroviruses in their structure and possess a life cycle similar to theirs that includes transcription, translation, and integration of daughter copies. We have investigated if retrotransposons are generally transcribed in the grasses and other plants, and ...

2016
Piotr Gawroński Magdalena Pawełkowicz Katarzyna Tofil Grzegorz Uszyński Saida Sharifova Shivaksh Ahluwalia Mirosław Tyrka Maria Wędzony Andrzej Kilian Hanna Bolibok-Brągoszewska

Large genome size and complexity hamper considerably the genomics research in relevant species. Rye (Secale cereale L.) has one of the largest genomes among cereal crops and repetitive sequences account for over 90% of its length. Diversity Arrays Technology is a high-throughput genotyping method, in which a preferential sampling of gene-rich regions is achieved through the use of methylation s...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده پزشکی 1391

هدف: کشت سلول های اسپرماتوگونی و تولید سلول های پر توان embryonic stem cells (es like cells) که دارای قابلیت بازسازی و تولید هرسه نوع لایه زایای جنینی می باشند، این سلول ها را به عنوان منبع کافی و جدیدی برای سلول درمانی و ترمیم در بیماریها از جمله بیماریهای نورودژنراتیو پیشنهاد می دهد. در تحقیق حاضر تمایز سلول های اسپرماتوگونی موش به سلول های شبه الیگودندروسیت و نقش آنها درمیلین سازی پس از پیون...

Journal: :Journal of virology 2004
Ricardo DeMarco Andre T Kowaltowski Abimael A Machado M Bento Soares Cybele Gargioni Toshie Kawano Vanderlei Rodrigues Alda M B N Madeira R Alan Wilson Carlos F M Menck João C Setubal Emmanuel Dias-Neto Luciana C C Leite Sergio Verjovski-Almeida

Using the data set of 180,000 expressed sequence tags (ESTs) of the blood fluke Schistosoma mansoni generated recently by our group, we identified three novel long-terminal-repeat (LTR)- and one novel non-LTR-expressed retrotransposon, named Saci-1, -2, and -3 and Perere, respectively. Full-length sequences were reconstructed from ESTs and have deduced open reading frames (ORFs) with several un...

Journal: :PLoS genetics 2016
Xiang Guo Handong Su Qinghua Shi Shulan Fu Jing Wang Xiangqi Zhang Zanmin Hu Fangpu Han

Centromeres typically contain tandem repeat sequences, but centromere function does not necessarily depend on these sequences. We identified functional centromeres with significant quantitative changes in the centromeric retrotransposons of wheat (CRW) contents in wheat aneuploids (Triticum aestivum) and the offspring of wheat wide hybrids. The CRW signals were strongly reduced or essentially l...

2016
Zhenglin Zhu Shengjun Tan Yaqiong Zhang Yong E. Zhang

RNA-based duplicated genes or functional retrocopies (retrogenes) are known to drive phenotypic evolution. Retrogenes emerge via retroposition, which is mainly mediated by long interspersed nuclear element 1 (LINE-1 or L1) retrotransposons in mammals. By contrast, long terminal repeat (LTR) retrotransposons appear to be the major player in plants, although an L1-like mechanism has also been hyp...

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