Lectures on squid-vibrio symbiosis
I. Living together: The symbiosis of host-microbial interactions
iBioSeminars — Microbiology
Advances in rRNA sequencing and other techniques have allowed scientists to characterize novel symbiotic partnerships. In her first lecture, Dr. Margaret McFall-Ngai provides an overview of the three main types of symbiosis: mutualism (both partners benefit), commensalism (only one partner benefit), and parasitism (one partner benefits, but the other partner is harmed). McFall-Ngai’s research is currently focused on understanding the establishment and maintenance of symbiotic relationships, and the molecular effects that these relationships have on development, health, and disease.
II. The Hawaiian bobtail squid - Vibrio fischeri association
iBioSeminars — Microbiology
In her second talk, McFall-Ngai tells the story of a symbiosis between the Hawaiian bobtail squid and Vibrio fischeri (V. fischeri), a type of luminescent bacteria that enables the squid to hunt at night. McFall-Ngai and collaborators have identified the molecular mechanism by which nascent Hawaiian bobtail squid select V. fischeri from the thousands of other bacteria in their habitat. V. fischeri induces developmental changes in the squid that drive daily rhythms of gene expression, which are necessary to control bacterial growth, a crucial cycle in this symbiotic partnership.
In the early 1990's, Robert Robbins was a faculty member at Johns Hopkins, where he directed the informatics core of GDB — the human gene-mapping database of the international human genome project. To share papers with colleagues around the world, he set up a small paper-sharing section on his personal web page. This small project evolved into The Electronic Scholarly Publishing Project.
In 1995, Robbins became the VP/IT of the Fred Hutchinson Cancer Research Center in Seattle, WA. Soon after arriving in Seattle, Robbins secured funding, through the ELSI component of the US Human Genome Project, to create the original ESP.ORG web site, with the formal goal of providing free, world-wide access to the literature of classical genetics.
Although the methods of molecular biology can seem almost magical to the uninitiated, the original techniques of classical genetics are readily appreciated by one and all: cross individuals that differ in some inherited trait, collect all of the progeny, score their attributes, and propose mechanisms to explain the patterns of inheritance observed.
In reading the early works of classical genetics, one is drawn, almost inexorably, into ever more complex models, until molecular explanations begin to seem both necessary and natural. At that point, the tools for understanding genome research are at hand. Assisting readers reach this point was the original goal of The Electronic Scholarly Publishing Project.
Usage of the site grew rapidly and has remained high. Faculty began to use the site for their assigned readings. Other on-line publishers, ranging from The New York Times to Nature referenced ESP materials in their own publications. Nobel laureates (e.g., Joshua Lederberg) regularly used the site and even wrote to suggest changes and improvements.
When the site began, no journals were making their early content available in digital format. As a result, ESP was obliged to digitize classic literature before it could be made available. For many important papers — such as Mendel's original paper or the first genetic map — ESP had to produce entirely new typeset versions of the works, if they were to be available in a high-quality format.
Early support from the DOE component of the Human Genome Project was critically important for getting the ESP project on a firm foundation. Since that funding ended (nearly 20 years ago), the project has been operated as a purely volunteer effort. Anyone wishing to assist in these efforts should send an email to Robbins.
With the development of methods for adding typeset side notes to PDF files, the ESP project now plans to add annotated versions of some classical papers to its holdings. We also plan to add new reference and pedagogical material. We have already started providing regularly updated, comprehensive bibliographies to the ESP.ORG site.
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