HOME >> BIOLOGY >> NEWS
Pollen productionand allergiesmay rise significantly over next 50 years

Boston, MARising carbon dioxide levels associated with global warming could lead to an increase in the incidence of allergies to ragweed and other plants by mid-century, according to a report appearing in the March Annals of Allergy, Asthma, and Immunology by Harvard University researchers. The study found that ragweed grown in an atmosphere with double the current carbon dioxide levels produced 61 percent more pollen than normal. Such a doubling of atmospheric carbon dioxide is expected to occur between 2050 and 2100.

"The side effects of carbon dioxide, as well as its impact on heat budget and the water cycle, have to be taken very seriously," said Paul Epstein, MD, Harvard Medical School instructor in medicine and associate director of the Center for Health and the Global Environment at HMS. "I believe this study can help us understand the true costs of burning fossil fuels."

Ragweed, which flourishes along roadsides and in disturbed habitats throughout North America, produces one of the most common allergens. The researchers grew ragweed plants from seeds in two different enclosed environments. One was maintained at 350 parts carbon dioxide to a million parts air, which is roughly the current level. The other module was maintained at 700 parts carbon dioxide to a million parts air.

The indoor ragweed pollen results61 percent more in the second moduleecho the findings of a recent study conducted outdoors in North Carolina, said Epstein. In that study, excess carbon dioxide was pumped into a pine forest, tripling the number of pine cones and seeds. "It is a very important study because it shows how carbon dioxide affects different plant parts," he said. Taken together, the studies suggest that under carbon dioxide-enriched conditions, plants may boost production of their propagative elements to enhance their reproductive success.

In addition to producing more allergensand possibly more allergy suffererssuch a trend could alter compe
'"/>

Contact: John Lacey
public_affairs@hms.harvard.edu
617-432-0442
Harvard Medical School
20-Mar-2002


Page: 1 2

Related biology news :

1. Pollen record from Chilean lakes indicates global "togetherness" during last ice age
2. Allergy And Asthma-Exaceberating Mites, Molds And Pollens On The Rise Due To El Niño . . . La Niña
3. Rare mutations can significantly increase risk factor for heart disease
4. Cancer health risk significantly underestimated by EPAs ambient model estimates
5. Double mastectomies significantly lower risk of breast cancer in women who are genetically at risk
6. HAART therapy significantly prolongs survival in AIDS patients with central nervous system lymphoma
7. ENBREL rapidly, significantly improved back pain, mobility, function in ankylosing spondylitis
8. Once weekly ENBREL significantly reduced rheumatoid arthritis pain, inflammation & improved function
9. Cognitive abilities increase significantly with time in most prematurely born children
10. Combining key ingredients of vegetarian diet cuts cholesterol significantly, says study
11. Actonel significantly reduced moderate and severe vertebral fractures

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


(Date:2/2/2016)... 2016 This BCC Research report provides ... reviewing the recent advances in high throughput ‘omic ... field forward. Includes forecast through 2019. ... and opportunities that exist in the bioinformatic market. ... as well as IT and bioinformatics service providers. ...
(Date:2/1/2016)... , February 1, 2016 Rising ... to drive global touchfree intuitive gesture control market ... Rising sales of consumer electronics coupled with new ... market size through 2020   ... coupled with new technological advancements to drive global touchfree ...
(Date:1/25/2016)... Jan. 25, 2016   Unisys Corporation (NYSE: UIS ... F. Kennedy (JFK) International Airport, New York City ... identify imposters attempting to enter the United States ... them. pilot testing of the system at Dulles ... terminals at JFK during January 2016. --> pilot testing ...
Breaking Biology News(10 mins):
(Date:2/9/2016)... , Feb. 9, 2016  Regenicin, Inc. (OTC ... specializing in the development and commercialization of regenerative ... tissues and organs, recently reported the Company,s operating ... quarter of 2016. Lonza America , ... 2015 fiscal year in the process of consummating ...
(Date:2/9/2016)... ... February 09, 2016 , ... The American Academy of Thermology ... offering its 2016 AAT Member Certification Qualification Course for Technicians via a two part ... which will include a detailed review of hardware, software, and camera setup/operations, aligns with ...
(Date:2/9/2016)... and LONDON , February 9, 2016 /PRNewswire/ ... tech replace paper and protect IP   ... laboratory notebook (ELN) will be rolled out in ... and development (R&D) and protect valuable IP. Users will be ... a specific researcher or experiment as part of the application, ...
(Date:2/8/2016)... , Feb. 8, 2016 Should antibiotic bone ... cement products to prevent infection after standard total hip ... experts at ECRI Institute have been fielding a lot ... Fighting Your Bottom Line?" --> ... Line?" --> While there isn,t ...
Breaking Biology Technology:
Cached News: