E.O. Grundset Lectures
7:30 pm, Thursday evenings (unless otherwise stated)
Lynnwood Auditorium (unless otherwise stated)
Presented by the Kappa Phi Chapter of the Tri-Beta National Biological Honor Society and the Biology Department
The E.O. Grundset Lecture Series, named in honor of Southern’s beloved biology professor of 35 years, hosts research presentations by biologists and other scholars.
Scheduled Lectures - Fall 2018
"Oral microbial community dynamics and virulence: strategies for survival under oxidative stress." (RS-Research)
Hansel Fletcher, PhD, Dean of Basic Sciences: School of Medicine, Loma Linda University, California
September 6 — 7:30 p.m., Lynn Wood Hall Auditorium
Only a few Gram-negative anaerobic bacteria, among the 700+ microbial species in the human mouth, are associated with periodontal diseases. Porphyromonas gingivalis, a keystone pathogen and a major etiological agent in periodontal disease produces several virulence factors (e.g., capsule, adhesin, membrane vesicles, and hydrolytic enzymes) that can contribute to its pathogenicity. Overcoming oxidative stress is the key element in the survival of P. gingivalis in the inflammatory environment of the periodontal pocket. We will discuss the response and adaptation of P. gingivalis to environmental stress which now appear to utilize a coordinated strategy involving multiple mechanisms.
"The Fascinating and Controversial New Science of CRISPR." (RS-Research)
David Wollert, PhD, Department of Biology, Chatt. State Tech. Comm. College, Chattanooga, Tennessee
September 20 — 7:30 p.m., Lynn Wood Hall Auditorium
Already hailed as the greatest discovery of the century, CRISPR is a powerful biotechnology tool giving scientists unprecedented access to the genetic makeup of all living organisms. It originally evolved as an adaptive immune system in bacteria, but when artificially harnessed in the laboratory, CRISPR allows scientists to accurately and precisely edit genes almost as it using a word processor. The potential applications are exciting and widespread, but they also open an enormous range of bioethical questions regarding how and when the technology should be used. This presentation will explore how CRISPR was discovered and how it is already revolutionizing the field of biology.
"Spiders on the clock: Pushing the limits of circadian biology." (RS - Research)
Thomas Jones, PhD, Department of Biology, East Tennessee State University, Johnson City, Tennessee
Circadian rhythms are endogenous oscillations, which become synchronized with the daily cycle regardless of external temperature. It is believed that these internal rhythms are advantageous, allowing organisms to anticipate regular changes in the environment: transition from day to night. Thus, there is a presumptive advantage to having an internal clock similar to a 24-hour day. However, we have discovered a species of spiders with internal clocks different from 24-hours, including species with the longest and shortest known circadian rhythms. This presentation will review what we know about spider circadian rhythms, and argue for spiders as a model into the fundamentals of chronobiology.
"Becoming a Veterinarian: A Journey of Passion and Perserverance." (CB - Careers in Biology)
October 20 - 8:00 p.m., Lynn Wood Hall Auditorium
In this lecture, Dr. Brian Dickinson will discuss his personal journey from Southern Adventist University (graduated '97) into his career as a small animal veterinarian. He will detail some of his obstacles, hardships, and successes in the pursuit of his dream.