2018 Meeting Date: Saturday April 21, 2018
University of Nevada, Las Vegas
4505 S. Maryland Pkwy.
Las Vegas, NV 89154
Keynote speaker: Beronda L. Montgomery, Ph.D. from the DOE Plant Research Laboratory at Michigan State University. Dr. Montgomery will present a lecture entitled: First Insight into Second Messengers: Roles of Cyclic Dinucleotides in Environmental Responses in Cyanobacteria.
The meeting is open to all persons; every author (talks or posters) must submit an abstract by the posted deadline. We solicit your help in calling this meeting to the attention of colleagues and students who are not members but are interested in attending and presenting their research.
This is a joint meeting between the Arizona / Southern Nevada Chapter of the American Society for Microbiology (ASM) and the Arizona-Nevada Academy of Science (ANAS).
Choose one of the two registration portals below based on your organizational affiliation. Your choice will determine which luncheon/business meeting you will attend. Both links will also include information regarding joining or renewing membership.
The deadline for registration is April 9th, 2018
Most events will take place in the Bigelow Physics building (BPB) on the campus of the University of Nevada, Las Vegas. Free parking near BPB for the event will be in Lots O and J. Campus map.
A detailed schedule of the day's events will be posted here closer to the meeting date. Check back later.
A title and abstract must be submitted for each talk or poster to be presented at the meeting. Abstracts will be published in the Proceedings issue of the Journal of the Arizona-Nevada of Science exactly in the form and condition submitted by the author. Please read the following instructions carefully before preparing your abstracts. Refer to the Sample Abstract for the proper format.
*CULTURING BACTERIA FROM EXTREME ENVIRONMENTS IN THE DESERT DEEP SUBSURFACE AND HYPERSALINE PLAYAS
Laura Stewart1,2,3, Scott D. Hamilton-Brehm3, Austin J. McKenna1,3 and Duane P. Moser3,1
1University of Nevada Las Vegas, NV. 2Madison College, Madison, WI. 3Desert Research Institute, Las Vegas, NV
The U.S. Desert Southwest hosts a variety of unusual and little-characterized microbial habitats. Among these are Death Valley - officially the hottest place on Earth - and the Nevada National Security Site (NNSS), where 828 underground tests of cold war nuclear devices were conducted. Above and below ground, with or without oxygen, high salinity or freshwater, with limited carbon resources and extreme heat these environments support a diverse array of microbes. In most cases extensive explorations of microbial diversity have not been performed, particularly among desert subsurface microorganisms. If we consider only 0.1% of ecological microbes are amenable to laboratory cultivation, a substantial majority of microbial life remains potentially available for even the most basic of characterizations. In this study, we enriched and isolated microbes from several desert subsurface habitats and from a hypersaline playa. Subsurface water samples were collected from wells drilled as part of the Underground Test Area (UGTA) program. These wells penetrate distinct lithological units including high elevation volcanics (ER 20-4, ER 20-8, ER EC-13), valley fill alluvium (ER 5-5), and the regional carbonate aquifer (U-3cn PS#2/”Bilby” at the NNSS) and (BLM-1 and Nevares Deep Well #2 in or near Death Valley). Well depths range from 309-610m. Water samples were used to inoculate enrichment media supporting anaerobic sulfate/sulfur reduction, anaerobic peptide/sugar fermentation, simple short chain fatty acid fermentation, iron/manganese reduction, or anaerobic methanotrophy. The decision to try these metabolic conditions was supported by geochemical data. Enrichments resulted in growth in two-thirds of conditions tried on the Nevares DW#2 sample, and a quarter of conditions on the UE-3cn “Bilby” sample. The reduction of Mn(IV) oxides was tested on all wells, and only resulted in growth from Nevares DW#2. Although several conditions resulted in dense growth, only three bacterial isolates were obtained in pure culture to date. On anaerobic manganese reduction medium, the Nevares DW#2 well generated an isolate belonging to the genus Desulfotomaculum. The U-3cm PS#2 Bilby well produced two isolates: one on anaerobic proteolytic conditions, belonging to the family Peptococcacae, and another on anaerobic methane medium, belonging to the genus Desulforudis. The U-3cn PS#2/Bilby microbe isolated from the methane medium preparation is of special interest. To date, the Desulforudis genus has only been detected in limited terrestrial and marine deep subsurface habitats and has yet to produce a cultivated representative. The D. audaxviator from African deep mines is currently the only microorganism known with the capacity to exist as a single-species ecosystem, to grow completely isolated from the photosphere (e.g. utilizing radiochemically-produced H2 and SO42-), and is arguably Earth’s deepest known life form.
Each room is equipped with an internet connected computer (equipped with USB port for flash drive connection) with projection system. Speakers will be allowed 15 minutes to present their talks. Further information can be provided by the session chairs listed below.
Session chair: hedlund_email (702-895-0809)
Session chair: rivadeneira_email (928-919-2611)
Geology and Geography
Session chair: McCord_email (480-644-4098)
Session chair: Poff_email (702 515-5154)
Session chair: borromeo_email
Posters - All disciplines (Biology, Geology, Hydrology, etc.)
Session chair: Yoon_email (702 651-4140)
A good poster is uncluttered and clear in design. It has legible text and logical organization. The main tenet of a good poster design is simplification. Use a crisp, clean design and a strong title. Do not tell the entire research history; present only enough data to support your conclusions and show the originality of the work.
The text material should be reduced to convey your points quickly and clearly. The most successful posters display a succinct statement of major conclusions at the beginning, followed by supporting text in later segments, and a brief summary at the end.
Students are encouraged to apply for awards in presentation of posters or presentations. Both ANAS and the Arizona / Southern Nevada Chapter of ASM will be providing awards.
Undergraduate or gradate students wishing to participate in the Best Student Presentation competition must follow all the directions above for "Instructions to Authors" as well as meet the requirements below: