کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5113733 | 1377948 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cyanobacterial diversity and toxicity of biocrusts from the Caspian Lowland loess deposits, North Iran
ترجمه فارسی عنوان
تنوع سیانوباکتریایی و سمیت پوسیدگیهای زیستی از ذخایر لوزیا در خلیج خزر، شمال ایران
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
چکیده انگلیسی
Biocrusts and adjacent sediments were collected from the so-called loess plateau of Northern Iran and the loess deposits on the foothills of Alborz Mountains. The mineralogical and granulometric analyses characterized sediments as quartz-rich clayey or sandy silts. Cyanobacterial diversity, colony morphology and grain stabilization were studied by light and scanning electron microscopy, which showed glue-like layers of cyanobacterial EPS and dense networks of filamentous cyanobacteria immobilizing finer and bigger grains, respectively. Amorphous, tuft and globular cyanobacterial colony structures were also detected. 15 cyanobacterial genera were identified in the biocrust samples including Microcoleus vaginatus as the common species in all samples, Aphanocapsa, Aphanothece, Calothrix, Chroococcus, Chroococcidiopsis, Cyanosarcina, Hassallia, Homeothrix, Nostoc, Oculatella, Schizothrix, Scytonema, Tolypothrix and Trichocoleus. Two biocrust samples showed traces of toxicity in a protein phosphatase inhibition assay targeting microcystins and similarly acting compounds. The Artemia salina assay revealed an elevated toxic response in one sample.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Quaternary International - Volume 429, Part B, 30 January 2017, Pages 74-85
Journal: Quaternary International - Volume 429, Part B, 30 January 2017, Pages 74-85
نویسندگان
Tamara DuliÄ, Jussi Meriluoto, Tamara PalanaÄki MaleÅ¡eviÄ, Violeta GajiÄ, Tamara VažiÄ, Nada Tokodi, Igor Obreht, Bojan KostiÄ, Petar Kosijer, Farhad Khormali, Zorica SvirÄev,