حسین ریاحی
دانشکده علوم و فناوری زیستی، دانشگاه شهید بهشتی
[ 1 ] - مطالعه تاکسونومیک نمونه‌های خاکزی سیانوپروکاریوت‌های رشته‌ای فاقد هتروسیست از استان یزد، ایران
به منظور بررسی سیانوپروکاریوت‌های خاکزی استان یزد، تاکسون‌های موجود در خاک هفت ایستگاه از شهرستان‌های تفت، میبد و اردکان مورد مطالعه قرار گرفت. شناسایی نمونه‌ها بر اساس ویژگی‌های مورفولوژیک صورت گرفت. در این تحقیق، در مجموع 18 گونه متعلق به 9 جنس Oscillatoria،Kamptonema ، Phormidium، Lyngbya، Oxynema، Microcoleus، Jaaginema، Pseudanabaena و Leptolyngbya از خانواده‌های Microcoleaceae، Oscillator...
[ 2 ] - مطالعه مورفومتریک و فیلوژنتیک سویه‌های جنس Anabaena در اکوسیستم‌های خشکی ایران
مزارع برنج از جمله اکوسیستم‌های خشکی هستند که از شرایط محیطی مناسبی برای رشد و انتشار سیانوباکتری‌ها برخوردارند. جنس Anabaena Bory ex Bornet et Flahault از جمله مهمترین جلبکهای سبز-آبی رشته‌ای دارای هتروسیست در این اکوسیستم‌های خشکی به‌شمار می‌آید. در مطالعه حاضر، ایزوله‌های مختلف از این جنس، از خاک مزارع برنج 7 استان دارای کشت برنج واقع در مناطق شمالی، جنوبی، شرقی، غربی و مرکزی کشور، از اردیب...
[ 3 ] - Evaluation of ecological status of the Persian Gulf inshore waters (Hormozgan rocky bottoms) using macrophytic communities and a macroalgae biological index, EEI
Abstract: Marine macro-algae are very important biological indicators of the ecological status of the marine environment because they are first to react to the pollution entering the sea including nutrients which determine the trophy of the ambient of the environment. The aim of this paper is to evaluate the present trophic level and the health status of the sampling stations according to the E...
[ 4 ] - Phytoplankton of Aras dam reservoir (Iran): an attempt to assess water quality
The Aras reservoir, located in the north-west of Iran, plays an important role in fisheries, drinking and agricultural water supplies and recreational activities in the region. This study was performed to characterize the seasonal fluctuations of phytoplankton communities and their relationship with environmental factors in the Aras reservoir from August 2013 to May 2014. Sampling was carried o...
[ 5 ] - A taxonomic study of cyanobacteria in wheat fields adjacent to industrial areas in Yazd province (Iran)
Culturing, isolation, purification, and identification of cyanobacteria collected from wheat field soil, in five stations around the industrial areas in Yazd province (Iran) were conducted in this study. Identification of taxa was based on morphology and molecular methods. Cluster analysis and principal component analyses performed using SPSS software and rate of resemblance among the taxa were...
[ 6 ] - Phytoplankton of Aras dam reservoir (Iran): an attempt to assess water quality
The Aras reservoir, located in the north-west of Iran, plays an important role in fisheries, drinking and agricultural water supplies and recreational activities in the region. This study was performed to characterize the seasonal fluctuations of phytoplankton communities and their relationship with environmental factors in the Aras reservoir from August 2013 to May 2014. Sampling was carried o...
[ 7 ] - Cylindrospermum voukii and Wollea saccata, new records for algal flora of Iran
Cyanobacteria represent a small taxonomic group of photosynthetic prokaryotes which some of them are capable of N2 fixation and also possess a tremendous potential for producing a wide range of secondary metabolites. It has been suggested that, some of these microorganisms, especially heterocystous cyanobacteria, assist higher plant growth by supplying growth stimulating substances. During a fl...
[ 8 ] - ریخت شناسی، تشریح و تنوع ریختی گونه Hypnea pannosa در سواحل خلیج فارس و دریای عمان
هیپنه‌آ (Hypnea Lamouroux) از جلبکهای قرمزی است که به دلیل تولید کاراژینان در بسیاری از کشورها کشت می‌شود. گونه‌های مختلف این جنس در مناطق زیر جزرو‌مدی آب‌های گرم حضور دارند و این جنس شامل حدود 53 گونه در سراسر جهان است که در ایران حدود 9 گونه از این جلبک گزارش شده است. گونه‌های مختلف این جنس روی صخره‌ها، سنگ‌ها، صدف‌ها یا به‌صورت اپی‌فیت با سایر جلبک‌ها رشد می‌کنند. در این مطالعه ریخت‌شناسی، ...
[ 9 ] - The Study of the genetic diversity of two laccate species of Ganoderma lucidum and Ganoderma resinaceum using RAPD marker
The genus Ganoderma belongs to Polyporales, well-known for its medicinal properties and as a plant pathogen. The aim of this study was to identify the genetic variation between populations of two Ganoderma lucidum Karst. complex isolates using RAPD. For this purpose, four populations of G. resinaceum Boud. and eight populations of G. lucidum collected and purified during 2011-2012, were studied...
[ 10 ] - Study of morphological, anatomical characteristics and metabolic assay of some Ulva species (sea lettuce) in the coastal waters of the Persian Gulf, Iran
The genus Ulva L. (Sea lettuce), one of the most valuable marine macroalgae, is found in shallow coastal areas and in brackish and fresh water around the world. Ulva species have nutritional and medicinal values in addition to other applications, and contain various compounds such as lipids, proteins and carotenoids. These species have high phenotypic plasticity and varied in response to differ...
نویسندگان همکار