Effective Factors and Molecular Mechanisms of Heavy Metal Bioremediation Using Cyanobacteria

نویسندگان

  • Borhani, Matia Sadat Assistant Professor of Microbiology, Faculty of Basic Sciences and Engineering, Gonbad Kavous University, Golestan, Iran.
  • Saberi, Yasin Bachelor of Biology, Faculty of Basic Sciences and Engineering, Gonbad Kavous University, Golestan, Iran.
چکیده مقاله:

The sustainability and non-biodegradability of heavy metals, on the one hand, and the increasing environmental pollution caused by industrial wastewater on the other hand have increased the attention to heavy metal remediation. Cyanobacteria are one of the most important agents of heavy metals removal in drought and aquatic environments. Their ability to remove metals is related to various mechanisms such as their high surface-to-volume ratio, the presence of functional groups with high affinity for binding to metals at their cell wall and exopolysaccharides, and efficient metal absorption and storage systems such as metallothioneins, the presence of enzymatic antioxidants (superoxide dismutase, catalase, ascorbate peroxidase, and glutathione reductase) as well as non- enzymatic antioxidants (carotenoids, ascorbic acid, glutathione, and flavonoids). Various factors such as heavy metal concentration, pH, temperature, biomass concentration, and different ions could be effective on heavy metal bioremediation using cyanobacteria. This review article discusses the benefits of using cyanobacteria in heavy metal bioremediation and their molecular mechanisms of resistance to heavy metals.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Basic concepts on heavy metal soil bioremediation

The utilization of organisms, primarily microbes, to clean up contaminated soils, aquifers, sludges, residues, and air, known as “bioremediation”, is a rapidly changing and expanding area of environmental biotechnology, that offers a potentially more effective and economical clean-up technique than conventional physicochemical methods. Although it is certain that up to now the technologies empl...

متن کامل

Molecular mechanisms of heavy metal hyperaccumulation and phytoremediation.

A relatively small group of hyperaccumulator plants is capable of sequestering heavy metals in their shoot tissues at high concentrations. In recent years, major scientific progress has been made in understanding the physiological mechanisms of metal uptake and transport in these plants. However, relatively little is known about the molecular bases of hyperaccumulation. In this paper, current p...

متن کامل

Molecular mechanisms of heavy metal homeostasis in flies and humans

Metal-responsive transcription factor-1 (MTF-1) is an evolutionarily conserved zinc finger protein that activates transcription in response to heavy metals such as Zn(II), Cd(II) and Cu(I). The DNA-binding domain of MTF-1 recognizes a specific DNA sequence termed the metal response element (MRE), located in the promoter/enhancer region of its target genes. Here we show that human MTF-1 forms ho...

متن کامل

Bioremediation Of Heavy Metal Toxicity-With Special Reference To Chromium

All metals are toxic and our bodies require special transport and handling mechanisms to keep them from harming us. The toxicity occurs in humans due to environmental pollution via soil or water contamination or due to occupational exposure. Some of these metals are useful to us in low concentrations but are highly toxic in higher concentrations. These metal toxicity cause serious morbidity and...

متن کامل

synthesis of amido alkylnaphthols using nano-magnetic particles and surfactants

we used dbsa and nano-magnetic for the synthesis of amido alkylnaphtols.

15 صفحه اول

Heavy metal resistance strategies of acidophilic bacteria and their acquisition: importance for biomining and bioremediation.

Microbial solubilizing of metals in acid environments is successfully used in industrial bioleaching of ores or biomining to extract metals such as copper, gold, uranium and others. This is done mainly by acidophilic and other microorganisms that mobilize metals and generate acid mine drainage or AMD, causing serious environmental problems. However, bioremediation or removal of the toxic metals...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


عنوان ژورنال

دوره 12  شماره None

صفحات  1- 24

تاریخ انتشار 2020-03

با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.

کلمات کلیدی

کلمات کلیدی برای این مقاله ارائه نشده است

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023