Ecological Interactions and Biological Control

By David A. Andow; David W. Ragsdale et al. | Go to book overview

14
Biological Control of Plant Disease
Using Antagonistic Streptomyces

Daqun Liu, Linda L. Kinkel, Eric C. Eckwall,
Neil A. Anderson, and Janet L. Schottel


Introduction

Streptomyces spp. are common soil-borne microorganisms that are noted for their abilities to produce antibiotics and other secondary metabolites. About two-thirds of the naturally occurring antibiotics are produced by Streptomyces spp. and other actinomycetes ( Chater and Hopwood 1989). Streptomycetes are mainly saprophytic and utilize insoluble organic debris by producing extracellular hydrolytic enzymes such as cellulases, hemicellulases, proteases, amylases, and nucleases. They also adapt to their environments by forming hyphae that penetrate substrates and allow enzymes to be secreted with a relatively high local concentration ( Chater and Hopwood 1989).

Because of their competence in colonizing the soil and their proficiency in producing antimicrobial compounds, Streptomyces strains are attractive as potential biocontrol agents. Recently, members of this genus have been investigated for their potential to control a wide range of plant pests in a number of different systems. In our work at the University of Minnesota, Streptomyces strains have been extensively investigated in field, greenhouse, and laboratory studies for their ability to control Streptomyces scabies (causal agent of potato scab) and other plant pathogens. In addition to practical studies on biocontrol, we have focused research on the ecology, biochemistry, taxonomy, and physiology of the naturally occurring pathogen-suppressive Streptomyces strains in efforts to enhance biological control. In this chapter we will briefly survey systems in which streptomycetes have been investigated for their ability to act as biocontrol agents. Our primary focus will be to summarize the information obtained in our programs on the use of Streptomyces spp. for the biological control of potato scab.

-224-

Notes for this page

Add a new note
If you are trying to select text to create highlights or citations, remember that you must now click or tap on the first word, and then click or tap on the last word.
One moment ...
Default project is now your active project.
Project items

Items saved from this book

This book has been saved
Highlights (0)
Some of your highlights are legacy items.

Highlights saved before July 30, 2012 will not be displayed on their respective source pages.

You can easily re-create the highlights by opening the book page or article, selecting the text, and clicking “Highlight.”

Citations (0)
Some of your citations are legacy items.

Any citation created before July 30, 2012 will labeled as a “Cited page.” New citations will be saved as cited passages, pages or articles.

We also added the ability to view new citations from your projects or the book or article where you created them.

Notes (0)
Bookmarks (0)

You have no saved items from this book

Project items include:
  • Saved book/article
  • Highlights
  • Quotes/citations
  • Notes
  • Bookmarks
Notes
Cite this page

Cited page

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

(Einhorn, 1992, p. 25)

(Einhorn 25)

1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited page

Bookmark this page
Ecological Interactions and Biological Control
Table of contents

Table of contents

Settings

Settings

Typeface
Text size Smaller Larger Reset View mode
Search within

Search within this book

Look up

Look up a word

  • Dictionary
  • Thesaurus
Please submit a word or phrase above.
Print this page

Print this page

Why can't I print more than one page at a time?

Full screen
/ 340

matching results for page

Cited passage

Style
Citations are available only to our active members.
Sign up now to cite pages or passages in MLA, APA and Chicago citation styles.

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn, 1992, p. 25).

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences." (Einhorn 25)

"Portraying himself as an honest, ordinary person helped Lincoln identify with his audiences."1

1. Lois J. Einhorn, Abraham Lincoln, the Orator: Penetrating the Lincoln Legend (Westport, CT: Greenwood Press, 1992), 25, http://www.questia.com/read/27419298.

Cited passage

Welcome to the new Questia Reader

The Questia Reader has been updated to provide you with an even better online reading experience.  It is now 100% Responsive, which means you can read our books and articles on any sized device you wish.  All of your favorite tools like notes, highlights, and citations are still here, but the way you select text has been updated to be easier to use, especially on touchscreen devices.  Here's how:

1. Click or tap the first word you want to select.
2. Click or tap the last word you want to select.

OK, got it!

Thanks for trying Questia!

Please continue trying out our research tools, but please note, full functionality is available only to our active members.

Your work will be lost once you leave this Web page.

For full access in an ad-free environment, sign up now for a FREE, 1-day trial.

Already a member? Log in now.