Navigation Links
New method confirms importance of fungi in Arctic nitrogen cycle

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 plants tapping into
'"/>

Source:Marine Biological Laboratory


Page: 1 2

Related biology news :

1. Color-blind method opens new doors in DNA sequencing
2. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
3. Studies reveal methods viruses use to sidestep immune system
4. An entropy-based gene selection method for cancer classification using microarray data
5. New methods of gene delivery using lasers
6. Breakthrough method in nanoparticle synthesis paves the way for new pharmaceutical and biomedical applications
7. Shift of weather patterns necessitates rethinking of reforestation methods
8. Scientists use manufacturing methods to reconstruct mastodon
9. Researchers develop promising new gene network analysis method
10. New method shows it is possible to grow bone for grafts within a patients body
11. Researchers develop new method for facile identification of proteins in bacterial cells
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: New method confirms importance fungi Arctic nitrogen cycle

(Date:7/10/2014)... New York , July 7, 2014 ... by Transparency Market Research "Electronic Access Control Systems Market ... 2014 - 2019," the global Electronic Access Control systems ... and is expected to grow at a CAGR of ... value of USD 31,187.8 million in 2019. ...
(Date:7/10/2014)... 2014  Acuity Market Intelligence today released forecasts from "The ... that the global market for National Electronic ID (eID) programs ... During this time, the number of National eID cards in ... Asia , with its vast population, will dominate ... issued, while Europe trails a distant ...
(Date:7/10/2014)... mainly tropical flowering plant family Melastomataceae (Meadow Beauty Family). Most ... bees for their pollination. Only about 100 are known to ... Axinaea appear in clusters of few to more ... are pink, yellow, orange or red. The stamens (male reproductive ... bulbous appendages. The pollination mechanism of Axinaea had ...
Breaking Biology News(10 mins):Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 2Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 3Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 4Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 5National Electronic ID Programs Generate $54 Billion Between 2013 and 2018 with 3.5 Billion National eID Card Holders Worldwide 2Novel type of bird pollination mechanism discovered in South America 2
... DC - New research suggests that monoclonal antibody therapy of ... it is today, says a researcher at Georgetown University Medical ... of the Lancet . "We believe that antibody ... Louis Weiner, MD, director of the cancer center at GUMC ...
... rigorous environmental cleaning intervention can reduce the transmission ... other multidrug-resistant organisms in hospital intensive care units ... at the annual meeting of the Society for ... that following an enhanced cleaning protocol reduced the ...
... of a new study into plant sex and discovered ... The study takes to a new level understanding of ... Professor David Twell and colleagues in the Department of ... a gene that has a critical role in allowing precursor ...
Cached Biology News:Lombardi research: Monoclonal antibodies primed to become potent immune weapons against cancer 2Lombardi research: Monoclonal antibodies primed to become potent immune weapons against cancer 3Environmental cleaning intervention reduces transmission of multidrug-resistant organisms in ICUs 2Plant biologists discover gene that switches on 'essence of male' 2
(Date:7/10/2014)... Ceres, Inc . (Nasdaq: CERE ), an ... for the three months ended May 31, 2014 and ... reported that the company and its customers have made ... Brazil, which concluded in June, despite dry and hot ... part of the growing season. Yields of several of ...
(Date:7/10/2014)... today in the journal PNAS (Proceedings of the ... of day and sleep deprivation have a significant effect ... looking at the best time of day to test ... for administering medicines effectively. , Researchers from the University ... investigated the links between sleep deprivation, body clock disruption ...
(Date:7/10/2014)... geckos and spiders can sit upside down forever. Nanophysics makes ... this in an article just published in Physical Review ... , Geckos and spiders that seem to be able to ... researchers worldwide for many years. We will soon be able ... as the gecko,s foot. But the fact is, sooner or ...
(Date:1/15/2014)... assembling a club sandwich at the nanoscale, National ... succeeded in crafting a uniform, multi-walled carbon-nanotube-based coating ... used in upholstered furniture and other soft furnishings. ... was reduced 35 percent compared with untreated foam. ...
Breaking Biology Technology:Ceres Announces Fiscal Third Quarter 2014 Financial Results 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 3Ceres Announces Fiscal Third Quarter 2014 Financial Results 4Ceres Announces Fiscal Third Quarter 2014 Financial Results 5Ceres Announces Fiscal Third Quarter 2014 Financial Results 6Ceres Announces Fiscal Third Quarter 2014 Financial Results 7Ceres Announces Fiscal Third Quarter 2014 Financial Results 8Ceres Announces Fiscal Third Quarter 2014 Financial Results 9Time of day crucial to accurately test for diseases, new research finds 2Even geckos can lose their grip 2Layered security: Carbon nanotubes promise improved flame-resistant coating 2
... June 6, 2011 At the White House today, ... the seven U.S. recipients of the 2010 Kavli Prizes ... three fields for which the Prizes are awarded -- ... http://photos.prnewswire.com/prnh/20110606/DC14848 ) Joined by the President,s science ...
... Inc., the recognized leader in microbiology, infectious disease ... transplant and biomedical sciences communities, today announced that ... of Strategic Development following two years with the ... Inc. client base significantly. In Ronholdt,s ...
... Biotech announced the sale of its leading ... probiotic dietary supplements to Schiff Nutrition International, Inc. ... receive royalties on Schiff products containing GanedenBC30 ™. ... Ganeden,s probiotic technology, GanedenBC30™, in the over-the-counter (OTC) and ...
Cached Biology Technology:President Obama Meets U.S. Laureates of 2010 Kavli Prizes 2President Obama Meets U.S. Laureates of 2010 Kavli Prizes 3LABS, Inc. Promotes Chad Ronholdt to VP of Strategic Development 2Ganeden Biotech Completes $40 Million Sale of Sustenex® and Digestive Advantage® Probiotic Brands 2Ganeden Biotech Completes $40 Million Sale of Sustenex® and Digestive Advantage® Probiotic Brands 3