Three distinct clades of cultured heterocystous cyanobacteria constitute the dominant N-2-fixing members of biological soil crusts of the Colorado Plateau, USA
The identity of the numerically dominant N-2-fixing bacteria in biological soil crusts of the Colorado Plateau region and two outlying areas was determined using multiple approaches, to link the environmental diversity of nifH gene sequences to cultured bacterial isolates from the regions. Of the nifH sequence-types detected in soil crusts of the Colorado Plateau, 89%… [Read More]