⎯Admittedly, the Lut Desert of Iran has been remained as an unexplored region from a microbio-logical standpoint. Domain Archaea contains extremophiles that can live in harsh habitats. Extremely halo-philic archaea are exposed to... more
⎯Admittedly, the Lut Desert of Iran has been remained as an unexplored region from a microbio-logical standpoint. Domain Archaea contains extremophiles that can live in harsh habitats. Extremely halo-philic archaea are exposed to different environmental stresses in the hypersaline environments such as high solar irradiance and periodic desiccation. Haloarchaeal diversity in Shoor River, a saline river in the Lut Desert (a salinity of 134.3 g L-1 of dissolved salts), was investigated by a culture-dependent method. A large number of extremely halophilic isolates were obtained and a subset of 59 isolates was considered distinct. Firstly, the isolates were screened for their resistance under desiccation stress in 35 days. Eleven of these strains remained viable during the period in a desiccator containing silica gel. Then, three of them were randomly selected and their resistance against desiccation and ionizing radiation were determined. The isolates MS2, MS17, and MS50 were still recovered after 8 weeks in a desiccator and were moderately resistant to gamma radiation with D 10 value between 2 and 3 kGy. Strains MS2, MS17, and MS50 were affiliated with three species in the family Halobacteriaceae using 16S rRNA gene sequence analysis as well as morphological and biochemical characteristics-Haloterrigena jeotgali A29 T (99.6% similarity), Natrialba aegyptia 40 T (99.4% similarity) and Natrinema pallidum NCIMB 777 T (99.3% similarity), respectively. Although resistance to desiccation did not follow the sigmoid survival curve pattern of Deinococcus radiodurans, apparently haloarchaea can show a more resistance to desiccation in more long-term periods of time. This is the first report on isolation of extremely halophilic archaea belonged to the family Halobacteriaceae and their radioresistance and desiccation tolerance properties isolated from the Shoor River.
Dr. Amir Ghorbani Ph.D. is a Postdoctoral researcher in Tourism Management. His supervisors and advisors in the postdoctoral are Dr. Hadi Teymouri (University of Isfahan) and Dr. Hossein Azadi (University of Gent, Belgium). He graduated... more
Dr. Amir Ghorbani Ph.D. is a Postdoctoral researcher in Tourism Management. His supervisors and advisors in the postdoctoral are Dr. Hadi Teymouri (University of Isfahan) and Dr. Hossein Azadi (University of Gent, Belgium). He graduated with Ph.D. in 2017 and the title of his Ph.D. thesis is "Designing of smart tourism organization (STO) for tourism management". He is an editorial board member in the International Journal of Tourism & Hospitality Reviews. He also a reviewer in tourism journals of Elsevier, Emerald, Routledge &SAGE.
Dr. Amir Ghorbani Ph.D. is a Postdoctoral researcher in Tourism Management. His supervisors and advisors in the postdoctoral are Dr. Hadi Teymouri (University of Isfahan) and Dr. Hossein Azadi (University of Gent, Belgium). He graduated... more
Dr. Amir Ghorbani Ph.D. is a Postdoctoral researcher in Tourism Management. His supervisors and advisors in the postdoctoral are Dr. Hadi Teymouri (University of Isfahan) and Dr. Hossein Azadi (University of Gent, Belgium). He graduated with Ph.D. in 2017 and the title of his Ph.D. thesis is "Designing of smart tourism organization (STO) for tourism management". He is an editorial board member in the International Journal of Tourism & Hospitality Reviews. He also a reviewer in tourism journals of Elsevier, Emerald, Routledge &SAGE.
Evaluating the current situation of ecotourism in Kaji Namakzar Wetland in South Khorasan Province, Iran and offering strategies for its sustainable development are the main objectives of this study. To this end, different decision making... more
Evaluating the current situation of ecotourism in Kaji Namakzar Wetland in South Khorasan Province, Iran and offering strategies for its sustainable development are the main objectives of this study. To this end, different decision making tools were used including questionnaires and interviews with experts, local residents and visitors of the wetland. Strengths, weaknesses, opportunities and threats (SWOT) and quantitative strategic planning matrix (QSPM) analysis techniques were conducted to identify the required management strategies. Results showed that the existing ecotourism activities within the wetland are not in line with the sustainability requirements. Although the result of the present study showed that KNW has an unsustainable situation with regard to its current management strategies, if authorities take its great opportunities and strengths more into consideration , it can have positive effects on developing sustainable strategies to increase ecotourism activities in the region and to reduce the adverse effects on the environment.