منابع مشابه
Archaea in a hyper-arid polar desert.
Studying the microbial diversity of a unique biome such as the McMurdo Dry Valleys, Antarctica, is important to understand the sustainability of life under cold-arid conditions where other forms of life (i.e., plants and animals) do not exist. Pointing et al. (1) examined multidomain microbial diversity in the McKelvey valley using culture-independent molecular approaches and interestingly foun...
متن کاملHighly specialized microbial diversity in hyper-arid polar desert.
The McMurdo Dry Valleys in Antarctica are a cold hyperarid polar desert that present extreme challenges to life. Here, we report a culture-independent survey of multidomain microbial biodiversity in McKelvey Valley, a pristine example of the coldest desert on Earth. We demonstrate that life has adapted to form highly-specialized communities in distinct lithic niches occurring concomitantly with...
متن کاملMortality, Recruitment and Change of Desert Tree Populations in a Hyper-Arid Environment
BACKGROUND Long-term vegetation changes in hyper-arid areas have long been neglected. Mortality, recruitment and change in populations of the ecologically and culturally important and drought persistent Acacia tortilis and Balanites aegyptiaca are therefore estimated in the Eastern Desert of Egypt, and are related to the primary agents of change, water conditions and human intervention. METHO...
متن کاملChaxamycins A-D, bioactive ansamycins from a hyper-arid desert Streptomyces sp.
Streptomyces sp. strain C34, isolated from soil collected in the Chilean hyper-arid Atacama Desert, was cultured on different media, resulting in the isolation and identification of four new ansamycin-type polyketides. The organism was selected for chemical investigation on the basis of a genome-mining PCR-based experiment targeting the gene encoding rifamycin-specific 3-amino-5-hydroxybenzoic ...
متن کاملGeophysical Field Investigation of a Potential Hyper-arid Desert Analog to Mars: the Western Desert of Egypt
MARS: THE WESTERN DESERT OF EGYPT. C. L. Dinwiddie, S. K. Sandberg, R. N. McGinnis, and R. E. Grimm, Department of Earth, Material, and Planetary Sciences, Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78238 ([email protected]), 116 Sycamore St. NE, No.6, Albuquerque, NM 87106, Department of Space Studies, Southwest Research Institute, 1050 Walnut St., No.400, Boulder CO 80...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2010
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0912316107