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:6/22/2016)... WASHINGTON , June 22, 2016 On ... highly-anticipated call to industry to share solutions for the ... by U.S. Customs and Border Protection (CBP), explains that ... nationals are departing the United States ... criminals, and to defeat imposters. Logo - ...
(Date:6/9/2016)... control systems is proud to announce the introduction of fingerprint attendance control software, allowing ... are actually signing in, and to even control the opening of doors. ... ... ... Photo - http://photos.prnewswire.com/prnh/20160609/377487 ...
(Date:6/2/2016)... , June 2, 2016   The Weather Company ... announcing Watson Ads, an industry-first capability in which consumers will ... being able to ask questions via voice or text and ... Marketers have long sought an ... consumer, that can be personal, relevant and valuable; and can ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... June 27, 2016 , ... Newly created 4Sight Medical ... to the healthcare market. The company's primary focus is on new product introductions, ... strategies that are necessary to help companies efficiently bring their products to market. ...
(Date:6/24/2016)... 2016 Epic Sciences unveiled a liquid ... to PARP inhibitors by targeting homologous recombination deficiency ... new test has already been incorporated into numerous ... types. Over 230 clinical trials are ... including PARP, ATM, ATR, DNA-PK and WEE-1. Drugs ...
(Date:6/23/2016)...   Boston Biomedical , an industry leader ... target cancer stemness pathways, announced that its lead ... Designation from the U.S. Food and Drug Administration ... gastroesophageal junction (GEJ) cancer. Napabucasin is an orally ... stemness pathways by targeting STAT3, and is currently ...
(Date:6/23/2016)... SANTA MONICA, Calif. , June 23, 2016  The Prostate Cancer ... to pioneer increasingly precise treatments and faster cures for prostate cancer. Members of ... 77 institutions across 15 countries. Read More About the ... ... ...
Breaking Biology Technology:
Cached News: