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The undead may influence biodiversity, greenhouse gas emissions
Date:1/26/2011

Notre Dame, theorize that dormancy and the presence of such large reservoirs of microbial "seed banks" have important implications for biodiversity and the stability and functioning of ecosystem services.

"The idea of a microbial seed bank is a rather novel concept, but from our research we found that dormancy and seed banks are prevalent in most ecosystems." Lennon said. "What's fascinating is that there's only a small fraction that are active, which means there's a large reservoir that could potentially be activated at any given time."

Dormancy and the seed bank effect make microbes more resilient and could play key roles in microbial biodiversity as species migrate or simply remain mostly dormant over extended periods, he added. Dormancy could also help explain the sudden outbreak of diseases, he said, perhaps sparked by some change in the environment.

"One-third of world's population carries dormant tuberculosis microbes," he said. "Obviously, you can live a long time with the dormant cell in your body, but it's important to understand what can trigger its reanimation or what maintains its dormancy."

As Lennon continues his research, he is particularly interested in identifying the triggers of dormancy and activation cycles as well as how climate change affects these processes.


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Contact: Layne Cameron
layne.cameron@ur.msu.edu
517-353-8819
Michigan State University
Source:Eurekalert

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