Dangerous Fungal Spores May Travel the Globe On 'Stratospheric Superhighway'

sciencehabit shares a repot from Science.org: Scientists have captured fungal spores cruising in the inhospitable environment of the stratosphere, much higher than commercial aircraft fly. When brought back to the lab, the researchers found that some of the spores -- including pathogens of plants and people -- had survived intercontinental trips and could be cultured in the lab. Although spores and microbes have been detected in the stratosphere before, the new results come from a cheap, homespun sampling device dangled from weather balloons, the project could help researchers figure out what traits and conditions allow spores to survive a swing through the stratosphere and how they get up there in the first place. The work could also be a first step towards an atmospheric monitoring system that could nip emerging fungal pathogens in the bud, the study's authors reported at a conference of the European Geophysical Union.

After five preliminary flights, the team has already learned a lot. Based on DNA sequencing analysis, they identified spores from 235 genera, including fungi that infect blackberries and carrots in the United States and Japan, and one species, Naganishia albida, that can make immunocompromised people sick. In the lab, they were able to revive and culture spores from 15 different fungal species, among them several plant pathogens. Mostly, the results show that their sampler works. Now, the researchers want to set up regular flights to track airborne fungal biodiversity and seasonal variations. They also want to identify how events such as wildfires or volcanic eruptions inject spores into the stratosphere.

Read more of this story at Slashdot.