نتایج جستجو برای: mutants

تعداد نتایج: 75981  

Journal: :iranian journal of basic medical sciences 0
naghmeh ahmadiankia shahroud university of medical sciences, shahroud, iran vajiheh neshati stem cell and regenerative medicine research department, iranian academic center for education, culture and research (acecr), mashhad branch, mashhad, iran zeinab neshati department of cardiology, leiden university medical center, leiden, the netherlands jim swildens department of cardiology, leiden university medical center, leiden, the netherlands antoine af de vries department of cardiology, leiden university medical center, leiden, the netherlands

objective(s): adeno-associated virus type 2 (aav2) vectors are widely used for both experimental and clinical gene therapy. a recent research has shown that the performance of these vectors can be greatly improved by substitution of specific surface-exposed tyrosine residues with phenylalanines. in this study, a fast and simple method is presented to generate aav2 vector helper plasmids encodin...

Journal: :دانش گیاه پزشکی ایران 0
پرستو مطلبی دانشجوی سابق کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج محمد جوان نیکخواه دانشیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج سید محمود اخوت استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج و عضو هیأت علمی دانشگاه آزاد اسلامی، واحد اسلامشهر خلیل بردی فتوحی فر استادیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

thirty five monoconidial isolates of the fungal culture collection pyricularia grisea were examined, to identify the vegetative compatibility groups and characterize the genetic diversity of isolates as through rep-pcr genomic fingerprinting. the isolates were collected from ricefields during 1997-1999. genetic diversity of p. grisea isolates was studied as based on dna fingerprinting through r...

Journal: :دامپزشکی 0
داود زارع عضو هیئت علمی پژوهشکده بیوتکنولوژی مهرداد آذین عضو هیئت علمی پژوهشکده بیوتکنولوژی حسین راثی عضو هیئت علمی پژوهشکده بیوتکنولوژی سیدسعید میردامادی عضو هیئت علمی پژوهشکده بیوتکنولوژی

in order to increase tylosin production by streptomyces fradiae, two mutagens, i. e. uv and ems (ethylmethanesulfonate) were used. death curves were plotted for these mutagens. optimum condition for obtaining mutants by uv radiation was determined by using a uv source lamp at a distance of 20 cm for 40-60 seconds. when ems was used at 4% (w/v) concentration, the best mutants were isolated after...

Journal: :کنترل بیولوژیک آفات و بیماری های گیاهی 0
حمیده افشارمنش استادیار، پژوهشکدۀ کشاورزی هسته ای، پژوهشگاه علوم و فنون هسته ای، صندوق پستی 498-3148، کرج مسعود احمدزاده استاد، گروه گیاه پزشکی، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، صندوق پستی 77871-31587، کرج

members of the genus bacillus are among the most promising candidates for biological control of plant pathogenic bacteria. in this study, cell free supernatants of three strains b. subtilis utb96, b. subtilis utb1 and b. subtilis utb70 against aspergillus flavus r5 were investigated using dual culture assay. strain b. subtilis utb96 showed the highest inhibition effect. thin lyer chromatography...

Journal: :Horticulturae 2023

The absorption and utilization of NH4+ NO3− by plant roots is closely related to soil moisture. In this study, we investigated the effect short-time drought rewatering on uptake assimilation in 1-year-old Malus hupehensis plants, as well transcription changes ammonium transporters (AMTs) nitrate (NRTs). roots, content reductase activity decreased under some extent was restored after rewatering....

Journal: :International journal of economic plants 2023

The present study was conducted at department of Genetics, Osmania University, Hyderabad, Telangana, India, during September to November, 2021 with the blackgram accession- IC-436524 obtained from NBPGR regional centre, India and check T9 collected ICAR-CRIDA Hyderabad. aimed estimate mutagenic sensitivity black gram Ethyl methane sulfonate. Accordingly, this checked whether activity has been i...

Journal: :PLOS Biology 2021

Vertebrate behavior is strongly influenced by light. Light receptors, encoded functional opsin proteins, are present inside the vertebrate brain and peripheral tissues. This expression feature from fishes to human appears be particularly prominent in diurnal vertebrates. Despite their conserved widespread occurrence, nonvisual functions of opsins still largely enigmatic. even more apparent when...

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