|User’s votes are weighted by their contribution to the site (log10 contribution). In addition, the user who created the observation gets an extra vote.|
|I’d Call It That||3.0||0.00||0|
sum(score * weight) /
(total weight + 1)
In the last week we obtained a small flood of DNA data concerning Limacella from Jozsef Geml and Tatiana Semenova in Leiden. The material of this observation contributed our obtaining a good set of data for L. guttata. I am very grateful for your contribution of the collection associated with this observation.
It is the city of Zürich. Click on “collection location” and you will see the exact place (satellite map) where they grow at the moment. Geo-data: 47º 25’ 15,63’’ N – 8º 32’ 46,49’’ E
even though it is not required.
In your geo-data does Zürich refer to the Canton or both the Canton and the City? (I need that for my herbarium labels.)
One of your images will shortly appear on
Please excuse our low level of detail for the species we are still gathering data.
Of course everyone may use my photos.
Thanks for the Mycologia link!
In my experience, the pH value is a very important parameter.
Calcium is essential for many mushroom species, like Guepinia helvelloides or Lyophyllum
decastes, for example. But because most fungi prefer to grow under acidic conditions, the Calcium must
be bound to a (preferably organic) acid, like tartaric acid or citric acid, in order to keep the pH value of the agar medium low. I have learned that there is a significant difference if I grow a species at pH 4.0 or pH 5.5
I will keep you updated about my cultivation trials via Email.
I know that it is not strictly necessary to ask your permission, but I am old-fashioned. May I use one of the images of unopened specimens?
growth rate or other characteristics (e.g., the ability to fruit). Wolfe achieved fruiting of some free-living amanitas in culture. No one has ever fully succeeded with fruiting of an ectomycorrhizal amanita in culture … to my knowledge…despite the fact that some taxa grow qrow quite luxuriant mats of hyphae in culture as has been known for several decades.
I notice that soil pH is emphasized much more in European literature on macrofungi than it is in North American literature. I wonder if pH is an equally important element in the growth of all macrofungi. Could it be terribly important for a species of Hygrophorus (just as an example), but not critical for a species of Limacella or even a second Hygrophorus?
Again, I wish you good luck. I will be very interested in your results and would be pleased if you would stay in contact with me regarding your work. If you contact me through MO or http://www.amanitaceae.com?Contact+us , I will see your email address and can interact with you outside of the MO comment boxes.
Very interesting informations, thanks for this! That’s all new to me.
Interestingly, in Switzerland Limacella guttata grows only in calcareous soil, sometimes together with Tuber aestivum. I have to consider that when preparing a culture medium.
I will send you dried specimens for the herbarium.
Regarding culture of members of the Amanitaceae I suggest that you take a look at the recent paper by B. Wolfe et al. (appeared in early summer of this year in PLoS ONE) concerning evolution of the ectomycorrhizal life style in Amanita.
In that article Wolfe reports experiments demonstrating that the free-living amanitas (basal to the genus Amanita and probably sharing a common ancestor with all or part of Limacella) could, among other things, live on pure cellulose or sterilized grass clippings from lawns. It would be interesting to see if the genes for breakdown of cellulose in the free-living amanitas are very similar to those in the limacellas. It would be interesting to look at evolution of cellulase genes within the Amanitaceae up to the point of disappearance of several of said cellulases in almost all examined extant ectomycorrhizal Amanita lineages…that is if the possibly quite large impact of extinction on Limacella permits any useful/meaningful data to be assembled.
And, yes, I’d be delighted to have a few dried specimens from your collection.
My mailing address is here:
Some specimens are in my fridge at the moment.
I will start a cultivation trial on agar. No problem to dry some specimens.
Did you happen to dry and retain these specimens?
Created: 2012-10-14 16:42:53 BST (+0100)
Last modified: 2012-10-17 16:51:28 BST (+0100)
Viewed: 414 times, last viewed: 2017-01-14 16:40:44 GMT (+0000)