HOME >> BIOLOGY >> NEWS
Diversity of trees in forests may be caused by soil pathogens, IU biologists find

BLOOMINGTON, Ind. -- Microbes in the soil beneath a parent tree may kill most of the tree's seedlings in that particular area. This would clear the way for unaffected seeds of other species to take root and flourish near that tree, thereby promoting diversity of trees in forests, according to a study published in the March 16 issue of the journal Nature by Indiana University biologists Alissa Packer and Keith Clay.

The study is described in an article on Nature's Web site at http://helix.nature.com/nsu/000316/000316-12.html

"We showed that a soil pathogen causes the patterns of seedling mortality that we observed in a temperate tree, the black cherry -- high mortality close to the parent tree and low mortality farther away," said Clay, professor of biology. "Animal predators and herbivores may be less important than microbial pathogens in the soil in creating the diversity of tree species in temperate forests. Our results provide the most complete evidence that native pathogens influence tree distributions."

This work has both national and international significance because it extends to temperate forests one of the best-known ideas in ecology, the Janzen-Connell hypothesis. According to this hypothesis, the diversity of tropical forests is enhanced by the presence of host-specific natural enemies that kill offspring around parental trees, creating opportunities for other species to become established.

"While this hypothesis has often been tested in tropical forests, with some supporting results, our study demonstrates for the first time that the same process can occur in temperate forests," Clay said.

Black cherry (Prunus serotina) produces large numbers of bird-distributed fruits throughout the forests of eastern North America. Preliminary studies showed that black cherry seedlings experience high mortality in soil collected beneath black cherry adults, but low mortality in s
'"/>

Contact: Hal Kibbey
hkibbey@indiana.edu
812-855-0074
Indiana University
19-Mar-2000


Page: 1 2 3

Related biology news :

1. Fostering Diversity in the Sciences Symposium
2. Diversity: What people, grain sorghum have in common
3. Diversity hot spots at cold seeps?
4. Diversity of species triumphs
5. Undiscovered Biological Diversity: A Symposium On Bioprospecting
6. New Areas Of High Biological Diversity Discovered
7. Little-Explored African Genetic Diversity May Hold Key To Human Origins, Medical Questions
8. "Discovering Biological Diversity" Is AAAS Topic For USGS Manager
9. Study: Emission of smog ingredients from trees is increasing rapidly
10. Plumbing trees plumbing reveals their engineering skill
11. An exotic grass kills trees by hijacking their water

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Diversity trees forests may caused soil pathogens biologists find

(Date:3/20/2015)... --Research and Markets ( http://www.researchandmarkets.com/research/rswjb4/hand_geometry ) has announced ... Business Report" report to their offering. This ... Thousands. The report provides separate comprehensive analytics for the US, ... Europe , Asia-Pacific , ... Annual estimates and forecasts are provided for the ...
(Date:3/20/2015)... Research and Markets ( http://www.researchandmarkets.com/research/vkzvcs/iris_biometrics ) has ... Strategic Business Report" report to their offering. ... US$ Thousands. The report provides separate comprehensive analytics for the ... , Europe , Asia-Pacific ... Latin America . Annual estimates and forecasts ...
(Date:3/18/2015)... , March 18, 2015 As ... businesses, new revolutionary smart wallets and apps continue to be ... currently entrenched in the mobile payment industry in focus today ... Holding Ltd. (NYSE: BABA ), Apple Inc. (NASDAQ: ... ) and Facebook Inc. (NASDAQ: FB ) ...
Breaking Biology News(10 mins):Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 2Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 3Hand Geometry - Global Strategic Business Report 2015: An Essential Security Component for both Government & Enterprise Sector 4Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 2Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 3Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 4Iris Biometrics - Global Strategic Business Report 2015: System & Network Access Control - A Robust Market Opportunity in the Offing 5Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 2Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 3Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 4Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 5Revolutionary Smart Wallet & Mobile Payment Choices Change the Game for Consumers - Company Begins Shipping Newest Digital Wallet to Customers 6
(Date:4/27/2015)... Kan. , April 27, 2015   ... a pet therapeutics company focused on the licensing, ... companion animals, today provided commentary on clinical study ... during a poster session at the American Association ... ADXS31-164 is a novel Lm -LLO ...
(Date:4/27/2015)... DryLet, LLC a biotechnology company ... as animal waste reduction, bioremediation, wastewater treatment, aquaculture ... treatment plants and restaurant kitchen settings, announced today ... Commission on Environmental Quality (TCEQ) Environmental Trade Fair ... The company will highlight three of its key ...
(Date:4/27/2015)... , April 27, 2015  Together with its ... 3rd ESTRO Forum in Barcelona . ... nonprofit organization with the mission to improve cancer care, ... Radiating Hope believes that no patient should be denied ... affordable. Consequently, it cooperates with hospitals and clinics around ...
(Date:4/24/2015)... City, SD and Tempe, AZ (PRWEB) April 24, 2015 ... & Technology and Arizona State University (ASU) have entered ... other joint projects. , A memorandum of agreement signed ... research, long distance learning, student success and other services ... natural resources. , “We have complementary strengths and ...
Breaking Biology Technology:Aratana Therapeutics Comments on ADXS31-164 (AT-014) Study Data Presented During Poster Session at the American Association for Cancer Research (AACR) Annual Meeting 2015 2DryLet to Showcase Multiple Products at Texas Commission on Environmental Quality Trade Fair and Conference May 5-6 in Austin, Texas 2Elekta helps raise $33,000 to bring radiation treatment to developing countries 2Elekta helps raise $33,000 to bring radiation treatment to developing countries 3South Dakota Mines, Arizona State University Pave Way for Cooperative Research 2
Cached News: