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Re: Re Mycorrhizal Fungi and Mycorrhiza

Ericacea most assuredly do form a mycorrhizal association, called the ericoid type which is an endomycorrhiza (with hyphae actually entering cells) but different from the vesicular-arbuscular type of endomycorrhiza or, of course, ectomycorrhiza (where hyphae stay outside of cells). The fungi causing ericoid mycorrhizae have been isolated, but not cultured in the absence of host plants. For my doctoral dissertation, I studied, among other things, the effect of ericoid mycorrhizae on blueberry. The effect was nonsignificant and plants became readily infected without deliberate inoculation. In Australia, however, researchers found dramatic benefit from inoculations with ericoid fungi, probably because no blueberries are native there.

Lee Reich, PhD

Lon J. Rombough wrote:
0.1600021644.1237596767-1463792126-1017791524@topica.com"> 
The entire Ericaceae family either doesn't have, or has different forms of
mycorrhizal fungi that haven't been isolated and cultivated yet. That's
blueberries, rhododendrons, azaleas, heather, etc.
-Lon Rombough
Grapes, writing, consulting, more, plus word on my grape book at
http://www.bunchgrapes.com

----------
From: JEFF LOWENFELS J*@GARDENER.COM
To: G*@topica.com
Subject: [GWL]: Re Mycorrhizal Fungi and Mycorrhiza
Date: Tue, Apr 2, 2002, 11:16 AM


By the way, Mycorrhiza does not  benefit ALL plants and especially some our
readers care a lot about: Plants that don't "do" mycorrhizal fungi or at
leasat Mycorrhizae are not formed are Cruciferae (Broccoli et al) and
Chenopediaciae (spinach, beets. Are there others anyone knows about?

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