Microscopy Primer
Light and Color
Microscope Basics
Special Techniques
Digital Imaging
Confocal Microscopy
Live-Cell Imaging
Microscopy Museum
Virtual Microscopy
Web Resources
License Info
Image Use
Custom Photos
Site Info
Contact Us

The Galleries:

Photo Gallery
Silicon Zoo
Chip Shots
DNA Gallery
Amino Acids
Religion Collection
Cocktail Collection
Screen Savers
Win Wallpaper
Mac Wallpaper
Movie Gallery

Phase Contrast Image Gallery

Peach Brown Rot

The photomicrograph below illustrates a stained thin section of peach fruit infected with Peach Brown Rot, a serious disease of fruit trees caused by the fungus Monilinia fructicola. Also affected by this devastating fungus are other stone fruits such as cherries, plums, prunes, nectarines, and apricots.

The fungus forms cankers on the twigs of the fruit trees, but it does the most damage when it rots blossoms and fruit. At harvest, apparently healthy fruit may be contaminated with spores and decay during storage and marketing.

M. fructicola has two spore types. The ascospores, which are produced sexually, are stored over the winter in mummified (rotted and dried) fruits and in twig and branch cankers. They are released in the spring and carried by the wind to unopened blossoms and young shoots. If conditions are warm and wet, the spores will germinate. The summer spores, conidia, are produced vegetatively (self-cloning) and are carried by the wind and insects to other parts of the tree where they can infect the maturing fruit.


Questions or comments? Send us an email.
© 1998-2015 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Friday, Aug 01, 2003 at 11:43 AM
Access Count Since March 21, 2000: 21556
For more information on microscope manufacturers,
use the buttons below to navigate to their websites: