HOME >> BIOLOGY >> NEWS
US trees affected by growing number of health concerns

St. Paul, Minn. (November 30, 2004) - A number of emerging forest health issues are affecting the overall vitality of North American forests, say plant pathologists with The American Phytopathological Society (APS).

At a recent APS Northeastern Division meeting, plant pathologists highlighted several types of diseases that are of growing concern, including:

BUTTERNUT CANKER

First reported in Wisconsin in 1967, butternut canker is a fast moving, virulent disease that is killing butternut trees at a rapid rate throughout their range in North America. Butternut canker is caused by a fungus that infects the trees through wounds or natural openings in the bark. Infections kill the inner bark and create dark-colored, elongate cankers (dead patches) on woody tissues of exposed roots, stems, and branches. Infected trees are eventually killed due to multiple cankering that girdles the tree. In 2004, a survey of 1,384 permanently marked butternut trees in Vermont found that about 82 percent were diseased and that 41 percent had been killed. This level of mortality is about a 30 percent increase since the initial survey was completed in 1996. Forest pathologists at the University of Vermont have found that insects are involved in the dissemination of spores of the fungus. They are also using a Geographic Information System (GIS) to investigate geospatial patterns of disease development and tree mortality on the landscape.

SUDDEN OAK DEATH AND RELATED DISEASES

Since it was discovered in 1995, Sudden Oak Death (SOD) has killed tens of thousands of oaks in forests of California and Oregon. The fungus-like organism that causes SOD, Phytophthora ramorum, appears to be an exotic species that is not native to North America. The pathogen infects a large number of plant species, but mortality in forests is primarily restricted to oaks and tanoaks. While many of the non-oak plants do not die as a result of their expos
'"/>

Contact: Amy Steigman
asteigman@scisoc.org
651-994-3802
American Phytopathological Society
30-Nov-2004


Page: 1 2

Related biology news :

1. Plastic that grows on trees
2. Human ancestors learned to walk upright in the trees, say experts
3. Lessons from the orangutans: Upright walking may have begun in the trees
4. Seeing the trees for the forest: WHRC scientists creating national biomass and carbon dataset
5. Mystery of fossilized trees is solved
6. How trees manage water in arid environments
7. Squirrels winning at outwitting trees survival strategy
8. Software, evolution and micro-inversions -- improving the building of phylogenetic trees
9. Frankincense trees overexploited for Christmas scent
10. A chilling solution: Measuring below-ground carbon without destroying trees
11. Mode of seed dispersal greatly shapes placement of rainforest trees

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/15/2016)... 15, 2016 --> ... Transparency Market Research "Digital Door Lock Systems Market - Global ... 2023," the global digital door lock systems market in terms ... and is forecast to grow at a CAGR of 31.8% ... and medium enterprises (MSMEs) across the world and high industrial ...
(Date:3/14/2016)... 2016 http://www.apimages.com ) - ... - Renvoi : image disponible via AP Images ... --> DERMALOG, le leader de ... lecteurs d,empreintes digitales pour l,enregistrement des réfugiés en ... pour produire des cartes d,identité aux réfugiés. DERMALOG ...
(Date:3/10/2016)... , March 10, 2016 ... market research report "Identity and Access Management Market by ... Compliance, and Governance), by Organization Size, by Deployment, by ... published by MarketsandMarkets, The market is estimated to grow ... Billion by 2020, at a Compound Annual Growth Rate ...
Breaking Biology News(10 mins):
(Date:5/6/2016)... York , May 6, 2016 ... Research " Molecular Diagnostic Market for Group A Streptococcus (GAS) ... Size, Share, Growth, Trends, and Forecast, 2015 - 2023 ", ... group A streptococcus (GAS) nucleic acid (NA) test products market ... projected to expand at a CAGR of 11.6% from 2015 ...
(Date:5/5/2016)... ... 05, 2016 , ... American Process, Inc. (API) announced that ... Nos. 9,322,133 and 9,322,134, to API and its affiliated companies for BioPlus® nanocellulose ... nanocellulose compositions. In addition to these patents and U.S. Patent No. 9,187,865 ...
(Date:5/4/2016)... (PRWEB) , ... May 04, 2016 , ... Proove ... to announce a strategic partnership with McGill University . The partnership is designed ... the market in order to help patients in pain. With the new agreement, researchers ...
(Date:5/4/2016)... , ... May 04, 2016 , ... ... innovations in biotechnology to help treat hormonal and stress related hair loss. With ... captured the hearts of key opinion leaders in the medical and salon channels ...
Breaking Biology Technology:
Cached News: