Skip to page content
USDA Forest Service
  
Treesearch

Research & Development Treesearch

 
Treesearch Home
About Treesearch
Contact Us
Research & Development
Forest Products Lab
International Institute of Tropical Forestry
Northern
Pacific Northwest
Pacific Southwest
Rocky Mountain
Southern Research Station
Help
 

Science.gov - We Participate


USA.gov  Government Made Easy


Global Forest Information Service

US Forest Service
P.O. Box 96090
Washington, D.C.
20090-6090

(202) 205-8333

You are here: Home / Search / Publication Information
Bookmark and Share

Publication Information

View PDF (1.1 MB)

Title: A Survey of Mycobionts of Federally Threatened

Author: Sharma, Jyotsna; Zettler, Lawrence W.; Van Sambeek, J. W.;

Date: 2003

Source: Symbiosis 34(1):145-155

Publication Series: Scientific Journal (JRNL)

Description: Terrestrial orchids require mycobionts for critical nutritional support during germination and growth. Despite the importance of such fungi, little is known of their identity and ecological roles. In the United States, the destruction of midwestern prairie ecosystems has resulted in the decline of the native Platanthera praeclara Sheviak and Bowles and its associated mycobionts. Mycobionts of P. praeclara from six populations across Minnesota and Missouri were isolated from protocorms and mature plants and were identified to the genus level. Hyphal morphology, colony appearance, rate of growth, and monilioid cell morphology including septal pore ultrastructure were examined to characterize the isolates. Results indicate that P. praeclara is primarily associated with Ceratorhiza isolates at various growth stages. Few Epulorhiza isolates were recovered from roots and protocorms indicating this genus may be less critical for the orchid. Worldwide, Epulorhiza have been documented as orchid mycobionts more frequently but species of Ceratorhiza seem to be more prevalent in the North American prairie ecosystems. Preservation of prairies with special attention to conserving mycobionts of P. praeclara is needed if viable populations of both organisms are to persist.

Keywords: Terrestrial orchids, Ceratorhiza, Epulorhiza, fungi

Publication Notes:

  • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
  • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
  • This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
  • Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, shobrla@fs.fed.us if you notice any errors which make this publication unusable.

XML: View XML

Citation:


Sharma, Jyotsna; Zettler, Lawrence W.; Van Sambeek, J. W. 2003. A Survey of Mycobionts of Federally Threatened. Symbiosis 34(1):145-155

 


 [ Get Acrobat ]  Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility

USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.