Dictyophora indusiata fo. lutea

Daniel-Renato

Re: Dictyophora indusiata fo. lutea

Messaggio da Daniel-Renato » 22 dic 2010, 03:43

Grazie a voi Giuliano!

Il piccolo fungo rosso è Podostroma

http://en.wikipedia.org/wiki/Podostroma_cornu-damae

Podostroma cornu-damae (Japanese: カエンタケ) is a species of fungus in the Hypocreaceae family.
The fruit bodies of the fungus are highly toxic, and have been responsible for several fatalities in Japan. The fungus contains several trichothecene mycotoxins.

Taxonomy

The species was originally described as Hypocrea cornu-damae by Narcisse Théophile Patouillard in 1895,
and later transferred to the genus Podocrea in 1905 by Pier Andrea Saccardo.
In 1994 Japanese mycologists Tsuguo Hongo placed the species in the genus Podostroma.

Description

The conidiophores (specialized fungal hyphae that produce conidia) are up to 400 μm high and about 2–4 μm wide in the main axial hyphae.
The phialides are arranged in tufts with narrow angles at the top, similar to the branching hyphae found in Trichoderma species.
The conidia are roughly spherical with a truncate base in each spore, pale green in color, and measure 2.5–3.5 μm in diameter.
Their surfaces are almost smooth, but sometimes appearing very faintly roughened with light microscopy.

Toxicity

Several poisonings have been reported in Japan resulting from consumption of the fungus.
In 1999, one of a group of five people from Niigata prefecture died two days after consuming about 1 gram (0.035 oz) of fruit body that had been soaked in sake.
In 2000, an individual from Gunma prefecture died after eating the fried mushroom.
Symptoms associated with consumption in these cases included stomach pains, changes in perception, decrease in the number of leukocytes and thrombocytes,
peeling skin on the face, hair loss, and shrinking of the cerebellum, resulting in speech impediment and problems with voluntary movement.

In another instance, an autopsy revealed multiple organ failure, including acute kidney failure, liver necrosis and disseminated intravascular coagulation.
In one case of poisoning, the patient suffered from hemophagocytosis, in addition to severe leukocytopenia and thrombocytopenia seven days after ingesting the fungus.
Plasmapheresis and administration of granulocyte colony-stimulating factor were used to treat the blood disorders.

The authors suggested that these treatments, in addition to the large volume of administered intravenous fluid—9 litres (2.0 imp gal; 2.4 US gal) over a 12-hour period—were responsible for his successful recovery.

The poisoning symptoms are similar to these observed previously with animals that have consumed trichothecene mycotoxins.
Japanese researchers detected the presence of the macrocyclic trichothecenes satratoxin H, satratoxin H 12′,13′-diacetate, satratoxin H 12′-acetate, and satratoxin H 13′-acetate.
When grown in liquid culture the fungus additionally produces roridin E, verrucarin J, and satratoxin H.
With the exception of verrucarin J, a 0.5 grams (0.018 oz) dose of all of these compounds, when injected into the abdomen of mice, will result in their death the following day.
Non hai i permessi necessari per visualizzare i file allegati in questo messaggio.

Leo
Membro FeM
Messaggi: 6194
Iscritto il: 17 apr 2007, 07:03
Nome: Alberto
Comune: Piacenza
regione: Emilia Romagna
nazione: Italia
fotocamera: Nikon Coolpix L5 e P100

Re: Dictyophora indusiata fo. lutea

Messaggio da Leo » 22 dic 2010, 08:11

Immagini spettacolari Daniel -6116 -6116

-nat201- -party- RICAMBIO GLI AUGURI A TE E FAMIGLIA -party- -natale-



-5327 -5327 Leo

Sergio54
Esperto
Messaggi: 9324
Iscritto il: 26 mar 2010, 01:11
Nome: sergio
Comune: Stregna
regione: FVG
nazione: Italia
fotocamera: Samsung a71
Località: Stregna

Re: Dictyophora indusiata fo. lutea

Messaggio da Sergio54 » 23 dic 2010, 02:10

Bellissima specie, molto fotogenica e spettacolare. Augurs di bon nadale di bon principi. Mandi

Rispondi