[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[SANET-MG] Eucalyptus EA by APHIS mised the boat on crytococcus
The article and abstract below deals with a startling finding about
Crytococcus in Eucalyptus that was overlooked or ignored in the APHIS
EA. Cryptococcus has been observed and flagged as a growing problem in
the Pacific Northwest, Washington and Oregon and in Vancouver Island,
the fungus is spread in pigeon poop.. The Eucalyptus-Cryptococcus
connection has also been widely recognized for some years. Such
findings raise questions about what APHIS is doing, is it just public
relations for friendly corporations?
GE eucalyptus tree investigation urged
Several U.S. environmental groups are upset concerning a possible link
between a pathogenic fungus and genetically engineered eucalyptus trees.
The organizations want the departments of Health & Human Services,
Agriculture, Interior, and the Environmental Protection Agency to
determine if the pathogenic fungal organism Cryptococcus gattii is
present in genetically engineered eucalyptus trees being grown by
ArborGen LLC in Alabama.
The request was made by the Sierra Club, the Global Justice Ecology
Project, The Center for Food Safety, the Dogwood Alliance, and the
Southern Forest Network.
"We know the Cryptococcus gattii pathogen is associated with eucalyptus
trees in other countries and a federal investigation is urgently needed
to fully assess ArborGen's proposed Alabama outdoor field trials of
genetically engineered eucalyptus," said Neil Carman of the Sierra Club.
Rachel Smolker, a research biologist with the Global Justice Ecology
Project, said "Cryptococcus gattii is considered by the Centers for
Disease Control as an 'emerging infectious disease.' Inhalation of
spores causes respiratory and central nervous system infection leading
to fatal fungal meningitis."
Med Mycol. 2005 Sep;43(6):565-9.Links
Isolation of Cryptococcus gattii and Cryptococcus neoformans var.
grubii from the flowers and bark of Eucalyptus trees in India.
Gugnani HC, Mitchell TG, Litvintseva AP, Lengeler KB, Heitman J,
Kumar A, Basu S, Paliwal-Joshi A.
Department of Medical Mycology, Vallabhbhai Patel Chest Institute,
University of Delhi, India.
The association of Cryptococcus gattii with Eucalyptus trees has
been well established. Here we report the isolation of both C. gattii
and Cryptococcus neoformans var. grubii from the flowers and bark of
Eucalyptus trees in India. We investigated a total of 233 samples of
Eucalyptus trees: 120 flowers, 81 fragments of bark, and 32 leaves. C.
gattii was isolated from two samples of flowers of Eucalyptus
terreticornis. C. neoformans var. grubii was recovered twice from the
bark of Eucalyptus camaldulensis, initially from one of three samples,
and again 2 months later, from one of four samples collected beneath the
canopy of the tree. The primary isolation medium was Nigerseed agar, and
brown colonies were presumptively identified as C. gattii or C.
neoformans. The species identification was confirmed by morphological
and biochemical characteristics. Using the Crypto-Check kit (Iatron,
Tokyo, Japan), the first two isolates were identified as serotype B (C.
gattii) and the other two were serotype A (C. neoformans var. grubii).
PCR analysis of the isolates of C. neoformans var. grubii revealed that
they possessed the MATalpha mating type allele. Molecular typing by
amplified fragment length polymorphism markers indicated that both
isolates of C. neoformans var. grubii possessed the same genotype. This
study demonstrates that C. neoformans var. grubii, as well as C. gattii,
may be associated with Eucalyptus trees.
To unsubscribe from SANET-MG:
1- Visit http://lists.sare.org/archives/sanet-mg.html to unsubscribe or;
2- Send a message to <firstname.lastname@example.org> from the address subscribed to the list. Type "unsubscribe sanet-mg" in the body of the message.
Visit the SANET-MG archives at: http://lists.sare.org/archives/sanet-mg.html.
Questions? Visit http://www.sare.org/about/sanetFAQ.htm.
For more information on grants and other resources available through the SARE program, please visit http://www.sare.org.