Dormancy: Illuminating How a Microbial Sleeping Beauty Awakens
نویسنده
چکیده
Nitrogen limitation induces dormancy in the cyanobacterium Synechocystis. During dormancy, the bacterium neither photosynthesizes nor divides, yet it maintains low-level metabolic activity. A new study shows how provision of a nitrogen source initiates a regimented genetic program that initially kick-starts metabolism and ultimately photosynthesis.
منابع مشابه
Horgan on Sleeping Beauty
With the notable exception of David Lewis, most of those writing on the Sleeping Beauty problem have argued that 1/3 is the correct answer. Terence Horgan has provided the clearest account of why, contrary to Lewis, Beauty has evidence against the proposition that the coin comes up heads when she awakens on Monday. In this paper, I argue that Horgan’s proposal fails because it neglects importan...
متن کاملThe Online Freeze-Tag Problem
We consider the following problem from swarm robotics: given one or more “awake” robots in some metric space M , wake up a set of “asleep” robots. A robot awakens a sleeping robot by moving to the sleeping robot’s position. When a robot awakens, it is available to assist in awakening other slumbering robots. We investigate offline and online versions of this problem and give a 2-competitive str...
متن کاملAwakening Sleeping Beauty: Promises of Eternal Youth Packaged through Scientific Innovation
Title of Document: AWAKENING SLEEPING BEAUTY: PROMISES OF ETERNAL YOUTH PACKAGED THROUGH SCIENTIFIC INNOVATION Michelle H. Smirnova, M.A., 2008 Directed By: Professor Laura Mamo, Department of Sociology The definition of what constitutes “healthy” aging has recently experienced a shift in emphasis from internal to external components—especially for the white, affluent, heterosexual woman. The e...
متن کاملSleeping Beauty’s Credences
The Sleeping Beauty problem has spawned a long debate between Thirders and Halfers which centers on their conflicting answers to the question “What is Sleeping Beauty’s credence in the event that the coin lands Heads?” In this paper, we show that the conflicting answers that Thirders and Halfers provide are the results of conflicting assumptions that each group makes. We lay out those assumptio...
متن کاملNew Concepts in Breast Cancer Emerge from Analyzing Clinical Data Using Numerical Algorithms
A small international group has recently challenged fundamental concepts in breast cancer. As a guiding principle in therapy, it has long been assumed that breast cancer growth is continuous. However, this group suggests tumor growth commonly includes extended periods of quasi-stable dormancy. Furthermore, surgery to remove the primary tumor often awakens distant dormant micrometastases. Accord...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Current Biology
دوره 26 شماره
صفحات -
تاریخ انتشار 2016