Isolation, purification and identification of three diatom species (Bacillariophyceae) from Gomishan wetland (N. Iran) using phylogeny and silica cell wall ultra-structure analysis (original) (raw)
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Nova Biologica Reperta, 2015
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Molecular identification of basidiomycetous yeasts from soils in Iran
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چلا داژنراتخم ني : يوجشناد يرتكد يراميب يهايگ يسانش ، هايگ هورگ يكشزپ ، ربت هاگشناد زيربت ،زي (mokhtarnejad@ut.ac.ir) يدهم ولنزرا : رايشناد چراق و يسانش يراميب يهايگ يسانش ، هايگ هورگ يكشزپ ، ربت هاگشناد زيربت ،زي ادسا هل ب يابا يرها : داتسا يراميب يهايگ يسانش ، هايگ هورگ يكشزپ ، ربت هاگشناد زيربت ،زي اتدنب يتكروت : تسا ،يدربراك يژولويبوركيم هورگ رايدا جورپ هاگشناد ي ايلاتيا ،ا
Three new Fusarium taxa isolated from gramineous plants in Iran
Rostaniha, 2010
In the course of a survey during growing seasons of 2002-04, various fields and pastures in 23 Iranian provinces were sampled. Some 1200 isolates of Fusarium from root, crown, stem and spike of various plants belonging to the family Poaceae were recovered using Nash-Snyder selective medium and purified on potato dextrose agar (PDA). Based on morphological characters, 35 Fusarium species were identified using PDA, SNA, KCl+WA and CLA media. Sporulation was encouraged using near UV light and darkness of 12h at 22-25˚ C. Among the species identified, Fusarium verticillioides and F. nygamai recovered from wheat, maize, rice and sugarcane had higher frequencies of 13.5 and 9%, respectively. Fusarium graminum and F. poae isolated from wheat, barley, rice, aegilops and oat had the lowest frequencies of 0.17 and 0.083%, respectively. F. heterosporum, F. pallidoroseum, F. pseudonygamai and F. sacchari from Poaceae are new taxa to the mycoflora of Iran.
ﺟﻠﺪ 24 ﺷﻤﺎره ، 2 ﺻﻔﺤﻪ ، 403-392) 1396 (وﻳﮋﮔﻲ از ﺑﺮﺧﻲ ﺑﺮرﺳﻲ در اﻧﺪﻣﻴﻚ ﻣﺮﺗﻌﻲ ﮔﻮﻧﻪ ﺳﻪ روﻳﺸﻲ و ﻣﺤﻴﻄﻲ ﻫﺎي آذرﺑﺎﻳﺠﺎن اﺳﺘﺎن ﺷﺮﻗﻲ ﻃﻴﺐ ﻧﺎزﻳﻼ ﻧﮋاد 1 ﻋﺼﺮي ﻳﻮﻧﺲ ، 2 * ﭘﺎﻛﺮوان ﻣﻨﻴﮋه ، 3 ﻧﺠﻴﺐ ﻣﺤﻤﺪرﺿﺎ و زاده 4 ﺟﻠﺪ اﻳﺮان ﺑﻴﺎﺑﺎن و ﻣﺮﺗﻊ ﺗﺤﻘﻴﻘﺎت ﻓﺼﻠﻨﺎﻣﻪ 24 ﺷﻤﺎره 2 393 ﺟﻠﺪ اﻳﺮان ﺑﻴﺎﺑﺎن و ﻣﺮﺗﻊ ﺗﺤﻘﻴﻘﺎت ﻓﺼﻠﻨﺎﻣﻪ 24 ﺷﻤﺎره 2 403 Abstract Acantholimon gilliatii, Astragalus aharicus and A. neo-mobayenii are the endemic species with one population in East Azarbaijan. Previous observations of researchers have shown that survival of these species at risk and their distribution is being limited. In this study, topographic, climatic and soil characteristics were investigated in habitats of these species. Also, coverage, height density and phenology of the study species were determined by using 10 plots in each area with random method during 2013 and 2014. The habitat of A. gilliatii is very limited in the southern slopes of ...
Horizontal array study and plant cover zonation of Choghakhor wetland (W Iran)
2011
For studying vegetation cover in Choghakhor wetland located in Chaharmahal-o-Bakhtiari province (W Iran), some zones of vegetation life forms were determined and also digitized in order to produce the primary map of plant cover by using LISS-IV sensor of IRS satellite with the spatial resolution of 5.8 m. As aquatic plants in Choghakhor wetland were fully grown, homogeneity or heterogeneity of vegetation units and their zones were measured based on quantitative characteristics of plants communities. Vegetation sites were evaluated from shore to water body by linear transects and sampled quantitative characteristics in 1 × 1 m quadrates at 10 and 20 m intervals. Frequency Presence Diagram was used in order to recognizing of zoning and horizontal array of wetland plants. Summing of species array based on water depth and dominated planttypes were shown that wetland vegetation cover is distinguished to two main zones and one transitional zone.
Distribution survey and some biological aspects of Water Hyacinth in Anzali Wetland, Guilan province
Zīst/shināsī-i Giyāhī-i Īrān, 2019
Water Hyacinth, Eichhornia crassipes is one of the world's worst weeds. It originates from Amazonia and be invader to other areas in the worldwide. It has recently been detected in several natural areas of northern part of Iran such as Anzali Wetland. Here, distribution of Water Hyacinth was studied in Anzali Wetland during 2015-2018. Also some biological characteristic including; evapotranspirative water losses, surveillance against salinity gradients and nutrient effect on biomass production of root and green parts were investigated. Water Hyacinth infestation was observed from 7 to 84 points of Anzali Wetland with 100 to 1000 m2 in different years. The distribution of Water Hyacinth was limited in summer of 2017 because of a prolonged temperatures below freezing winter. The seed was germinated in study area after two years. The water losses were estimated up to 2.5 times more from Water Hyacinth compared to open water. While the mortality of Water Hyacinth was observed in sal...
مجله دانشگاه علوم پزشکی گرگان, 2016
Background and Objective: Iran remains a major stronghold for glanders in the Middle East. In Iran, the non-indigenous Burkholderia mallei Razi 325 strain is used in manufacturing of the mallein, required for malleination of animals. Multi Locus Variable number tandem repeat analysis is currently the standard globally accepted genotyping system for Burkholderia mallei. This study was done to survey the genomic structure of Burkholderia mallei Razi 325, the strain used for industrial production of Mallein. Methods: In this descriptive study, a MLVA genotyping system with 4 previously-characterized loci VNTR140, VNTR1367, VNTR2065, VNTR2971 along with two new loci of VNTR24, VNTR41 was used. Results: Optimization of PCRs resulted in a single protocol that enabled simultaneous amplification of all the six loci. Sequencing of PCR products revealed there were 2, 3, 12, 6, 1 and 2 copies of the unit repeat hold in the genome of the Burkholderia mallei Razi 325 strain. This observation was...
بررسی برخی ویژگیهای اکولوژیکی گونه دارویی Zataria multiflora Boiss در استان هرمزگان
2005
آویشن شیرازی از زمانهای قدیم به صورت سنتی در درمان ناراحتیهایی چون اسهال شدید، سرماخوردگی، نفخ، سردرد، زخم، تب، حساسیتهای پوستی، چربی و قند خون مصرف می‌شود. به منظور شناخت برخی ویژگیهای اکولوژیکی گونه دارویی آویشن شیرازی (Zataria multiflora) جهت معرفی به منظور کشت انبوه آن در اراضی زراعی و استفاده در صنایع دارویی و همچنین جلوگیری از تخریب رویشگاههای طبیعی گونه، این بررسی از سال 1379 به مدت دو سال در استان هرمزگان انجام شد. مشخصات اقلیمی، زمین‌شناختی، ژئو مورفولوژیکی، تیپ‌های اراضی، گیاهان همراه، تیپ رویشگاه و نقشه پراکنش برای تمام مناطق پراکنش و اندازه گیری مؤلفه‌های مؤلفه‌های رویشی، تجزیه فیزیکی و شیمیایی خاک و مطالعه فنولوژی در سه منطقه احمدی، بادافشان و تنگ زاغ انجام گرفت. این گونه از شمالی ترین نقطه استان تا نزدیکترین منطقه به خلیج فارس (آبگرم گنو) و از غربی ترین نقطه در کوه چاه شنبه گاوبندی تا منطقه بشاگرد (کوه شنگ خمینی شهر) در شرق استان، از ارتفاع 250 تا 1850 متر پراکنش دارد. اقلیم محل پراکنش گونه گرم و نیمه خشک و گرم و نیمه خشک بیابانی است. 57.6 درصد از رویشگاههای گونه دارا...