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10 - Metal stress and the single yeast cell: Berkeley Award Lecture

from IV - Fungal bioremediation

Published online by Cambridge University Press:  05 October 2013

By
S. V. Avery
Edited by
G. D. Robson ,
Pieter van West  and
Geoffrey Gadd
S. V. Avery
Affiliation:
School of Biology University of Nottingham University Park Nottingham NG7 2RD UK
G. D. Robson
Affiliation:
University of Manchester
Pieter van West
Affiliation:
University of Aberdeen
Geoffrey Gadd
Affiliation:
University of Dundee
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Summary

Introduction

Overview

This paper explores the mechanisms of metal toxicity towards cells, specifically some advances being made in this area through work with the unicellular fungus, Saccharomyces cerevisiae. The two principal questions addressed here are:

  1. Is oxidative damage the cause of cellular metal toxicity?

  2. Why do individual cells exhibit widely differing metal resistances?

Several powerful experimental tools are unique to S. cerevisiae among eukaryotes, and are being exploited to help elucidate the mechanism(s) of metal toxicity. Furthermore, in conjunction with its unicellular morphology, S. cerevisiae provides an ideal system with which to explore the topical problem of cell individuality, applied here to metal toxicity. This chapter provides an overview of these fields, illustrated with key findings from the author's laboratory.

Metals in the environment and relevance to fungi

A wide range of industrial activities give rise to metal pollutants, which continue to be released into the environment at potentially harmful levels. Localized concentration of certain metals may also arise naturally. For example, toxic levels of the biologically essential metal copper are often associated with certain mineral ores as well as industrial or agricultural discharges. Cadmium is used widely in electroplating and galvanizing industries, as a colour pigment in paints and in batteries, and as a by-product of zinc and lead mining and smelting. Zinc, lead and other metals also may be released from similar types of sources.

Type
Chapter
Information
Exploitation of Fungi , pp. 161 - 186
Publisher: Cambridge University Press
Print publication year: 2007

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To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

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Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

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