نتایج جستجو برای: fischerella sp sha
تعداد نتایج: 122273 فیلتر نتایج به سال:
The ntcA gene from Synechococcus sp. strain PCC 7942 encodes a regulatory protein which is required for the expression of all of the genes known to be subject to repression by ammonium in that cyanobacterium. Homologs to ntcA have now been cloned by hybridization from the cyanobacteria Synechocystis sp. strain PCC 6803 and Anabaena sp. strain PCC 7120. Sequence analysis has shown that these ntc...
In the present research the growth and metabolism of cyanobacterium Fischerella sp. FS18, isolated from rice fields of Gillan Province (Iran), were evaluated in different nitrogen sources. This strain is a good candidate as biological fertilizer due to high efficiency to N2 fixation. In this way, cells in logarithmic phase of stock were treated with different nitrogen sources (N-free, 1 & 2 mM ...
مقدمه: در بین ریزموجودات فتوسنتزکننده، سیانوباکتریومsp. Fischerella منبع نویدبخشی برای جستجوی پلی‌ساکاریدهای با ساختمان جدید است. اگزوپلی‌ساکاریدها مانند مرزی در برابر عوامل ضدمیکروبی عمل می‌کنند؛ به همین علت، امروزه در صنعت به سیانوباکتری‌ها با عنوان عوامل غلیظ‌کننده یا شناورکننده، جاذب فلزات سنگین یا در زمینۀ پلی‌ساکاریدهای سولفاته به‌شکل مواد بیواکتیو بسیار توجه شده است که خود مزیتی در مق...
The purpose of this study was to investigate the growth and potential of crude oil biodegradation by Fischerella and Nostoc. In this study, the growth rate of cyanobacterial species such as Fischerella sp. ISC107 and Nostoc sp. ISC101 were determined using chlorophyll-a content measurement at 663nm under different treatments of crude oil (control, 0.1, 0.2, 0.4, 0.8 and 1.6%). The crude oil con...
Cyanobacteria are photosynthetic prokaryotes found in a range of environments. They are infamous for the production of toxins, as well as bioactive compounds, which exhibit anticancer, antimicrobial and protease inhibition activities. Cyanobacteria produce a broad range of antifungals belonging to structural classes, such as peptides, polyketides and alkaloids. Here, we tested cyanobacteria fro...
La inmovilización de microorganismos y su aprovechamiento en la agricultura como biofertilizantes o para biocontrol, es un tópico desarrollo, también aspecto importante a considerar concentración el inóculo bioencapsularlos sin afectar crecimiento producción sus metabolitos. Las células Fischerella sp. fueron encapsuladas con alginato calcio empleando diferentes porcentajes (1, 5, 10 20%), dete...
Cyanobacterial mats were characterized from pools of 45-60 degrees C in near-neutral pH, low-sulphide geothermal springs in the Philippines. Mat structure did not vary with temperature. All mats possessed highly ordered layers of airspaces at both the macroscopic and microscopic level, and these appear to be an adaptation to a free-floating growth habit. Upper mat layers supported biomass with ...
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