Microbial diversity in desert ecosystems.

摘要

Deserts are apparently lifeless. Yet there appear a number of microhabitats that are inhabited by microorganisms. Since stress allows only the tolerant forms to grow, the microorganisms not only dominate such habitat but also grow sufficiently to impart special visible features to the habitat. We discuss the diversity and microbiology of specialized habitats of deserts, which include patina (desert varnish), cryptobiotic crusts (biological crusts on soils), saline playas, rhizosphere and rhizosheath..