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Full-Text Articles in Life Sciences
Water As A Trophic Currency In Dryland Food Webs, Daniel C. Allen, Kevin E. Mccluney, Stephen R. Elser, John L. Sabo
Water As A Trophic Currency In Dryland Food Webs, Daniel C. Allen, Kevin E. Mccluney, Stephen R. Elser, John L. Sabo
Biological Sciences Faculty Publications
Water is essential for life on Earth, yet little is known about how water acts as a trophic currency, a unit of value in determining species interactions in terrestrial food webs. We tested the relative importance of groundwater and surface water in riparian food webs by manipulating their availability in dryland floodplains. Primary consumers (crickets) increased in abundance in response to added surface water and groundwater (contained in moist leaves), and predators (spiders and lizards) increased in abundance in response to added surface water, in spite of the presence of a river, an abundant water source. Moreover, the relative magnitude …
Subglacial Lake Vostok (Antarctica) Accretion Ice Contains A Diverse Set Of Sequences From Aquatic, Marine And Sediment-Inhabiting Bacteria And Eukarya, Scott O. Rogers, Yury M. Shtarkman, Zeynep A. Koçer, Robyn Edgar, Ram S. Veerapneni, Tom D'Elia, Paul F. Morris
Subglacial Lake Vostok (Antarctica) Accretion Ice Contains A Diverse Set Of Sequences From Aquatic, Marine And Sediment-Inhabiting Bacteria And Eukarya, Scott O. Rogers, Yury M. Shtarkman, Zeynep A. Koçer, Robyn Edgar, Ram S. Veerapneni, Tom D'Elia, Paul F. Morris
Biological Sciences Faculty Publications
Lake Vostok, the 7th largest (by volume) and 4th deepest lake on Earth, is covered by more than 3,700 m of ice, making it the largest subglacial lake known. The combination of cold, heat (from possible hydrothermal activity), pressure (from the overriding glacier), limited nutrients and complete darkness presents extreme challenges to life. Here, we report metagenomic/metatranscriptomic sequence analyses from four accretion ice sections from the Vostok 5G ice core. Two sections accreted in the vicinity of an embayment on the southwestern end of the lake, and the other two represented part of the southern main basin. We obtained 3,507 …
A New Method For Identifying Stem-Like Cells In Esophageal Cancer Cell Lines, Michael Eric Geusz, Taghreed N. Almanaa, Roudabeh J. Jamasbi
A New Method For Identifying Stem-Like Cells In Esophageal Cancer Cell Lines, Michael Eric Geusz, Taghreed N. Almanaa, Roudabeh J. Jamasbi
Biological Sciences Faculty Publications
Cancer stem cells (CSCs) appear to resist chemo-radiotherapy and initiate tumor recurrence in patients. Isolation and further characterization of this subpopulation is important for targeting CSCs. Flow cytometry using Aldefluor, a fluorescent substrate of aldehyde dehydrogenase, has been used to isolate CSCs from various cancer cell lines. However, newtechniques are needed to locate and identify CSCs in culture for live-cell analyses such as fluorescence microscopy without introducing artifacts during cell sorting and to observe CSC and non-CSC interactions. Previously, we characterized a distinct CSC subpopulation within human esophageal cancer cell lines (ESCC). In this study we introduce the attached-cell Aldefluor …