HOME >> BIOLOGY >> NEWS
New method confirms importance of fungi in Arctic nitrogen cycle

WOODS HOLE, MA--A new method to calculate the transfer of nitrogen from Arctic mushrooms to plants is shedding light on how fungi living symbiotically on plant roots transfer vital nutrients to their hosts. The analytical technique, developed by John E. Hobbie, MBL Distinguished Scientist and co-director of the laboratory's Ecosystems Center and his son, Erik A. Hobbie of the University of New Hampshire, may be applied to nearly all conifers, oaks, beeches, birch and shrubs such as blueberry and cranberry--all nitrogen-poor ecosystems--and will be an important tool for future studies of plant nitrogen supply.

It has long been known when soil nitrogen is in short supply, mycorrhizal fungi (those living symbiotically on the roots of plants) transfer nutrients to their host plants in exchange for plant sugars derived from photosynthesis, but the rates of transfer have never been quantified in the field. John and Erik Hobbie's study, published in the April 2006 issue of the journal Ecology, quantifies the role of mycorrhizal fungi in nitrogen cycling for the first time through measurements of the natural abundance of nitrogen isotopes in soils, mushrooms and plants. The researchers tested their technique using data from the Arctic LTER (Long Term Ecological Research) site near Toolik Lake, Alaska, in the northern foothills of the Brooks Range.

Previous research has found that when mycorrhizal fungi in the soil take up nitrogen from the soil and transfer it to small trees and shrubs, the heavy nitrogen isotope, nitrogen-15, is reduced in abundance in the plants and enriched in the fungi. Using a mass balance approach, an accounting of material entering and leaving a system, the researchers quantified the transfer of nitrogen and found that 61-86% of the nitrogen in plants at the site entered through fungal symbionts,

"Previous studies at this Arctic site have found a large range of nitrogen isotope content in plants and attributed the range to pla
'"/>

Contact: Gina Hebert
ghebert@mbl.edu
508-289-7725
Marine Biological Laboratory
9-May-2006


Page: 1 2

Related biology news :

1. Cost-effective method for gene silencing is featured in Cold Spring Harbor Protocols
2. A new method of adult stem cell growth efficacious in treatment of disorders of the cornea
3. Purdue-IU researchers explore new method for early disease diagnosis
4. Sequencing method yields fuller picture
5. New imaging method clarifies nutrient cycle
6. Researchers discover method for identifying how cancer evades the immune system
7. Bioinformatics-related methods are featured in Cold Spring Harbor Protocols
8. New method for reading DNA sheds light on basis of cell identity
9. Nanoparticles hitchhike on red blood cells: a potential new method for drug delivery
10. Rutgers, Penn researchers capture research dollars to improve prostate cancer diagnostic methods
11. Developer of new method for treating bone defects wins WPI Entrepreneurship Award

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


(Date:4/24/2017)... 24, 2017 Janice Kephart , ... Identity Strategy Partners, LLP (IdSP) , today issues ... President Trump,s March 6, 2017 Executive Order: ... vetting can be instilled with greater confidence, enabling ... all refugee applications are suspended by until at ...
(Date:4/18/2017)... -- Socionext Inc., a global expert in SoC-based imaging and computing solutions, ... which features the company,s hybrid codec technology. A demonstration utilizing TeraFaces ... will be showcased during the upcoming Medtec Japan at Tokyo Big ... Las Vegas Convention Center April 24-27. ... Click here for an image of ...
(Date:4/13/2017)... 2017 UBM,s Advanced Design and Manufacturing event ... emerging and evolving technology through its 3D Printing and ... alongside the expo portion of the event and feature ... focused on trending topics within 3D printing and smart ... event will take place June 13-15, 2017 at the Jacob ...
Breaking Biology News(10 mins):
(Date:6/22/2017)... ... June 22, 2017 , ... Ovation ... infertility as a disease, bringing new hope for prospective parents who are challenged ... meeting to back the World Health Organization’s designation in hopes of changing the ...
(Date:6/22/2017)... , ... June 22, 2017 , ... ... announced the release of Limfinity® version 6.5, a content-packed update to the Limfinity® ... to gain a larger and more diverse base of customers among labs and ...
(Date:6/20/2017)... Iowa (PRWEB) , ... June 20, 2017 , ... ... chance to immediately determine the adulterants which pose the most likely threat to ... - 28 of this year. , IFT's annual food expo attracts over ...
(Date:6/20/2017)... ... June 20, 2017 , ... ... therapeutics from millions-diverse immune repertoires, announces launch of its new Surge(TM) Discovery ... Johnson, PhD, CEO of GigaGen, will present on Surge at the conference. , ...
Breaking Biology Technology:
Cached News: