Navigation Links
Bugs expose underground carbon traffic system 10 times more important than fossil fuel burning

The flow of carbon through soil is ten times greater than the amount of carbon moved around by the burning of fossil fuel but until now how this happens was at best poorly understood. Soil was almost literally a black box to scientists interested in carbon. Now researchers at the University of Warwick have been able to shed light in that black box by getting a particular class of insects to expose the key underground carbon traffic system - by eating it.

The University of Warwick team worked with researchers from Aberdeen, Lancaster and Sheffield, to try and establish if plant associated fungi - arbulscar mycorrhizal (AM) fungi - found on the roots of 80% of all land plants had any role in the movement of atmospheric carbon to soil (fixed by plants in the form of CO2). AM fungi produce filaments that spread widely throughout the soil (sometimes referred to as the mycorrhizosphere) and they are known to be important for effective uptake by plants of water and phosphates but they were not known to play any role in the movement of carbon through the soil.

The researchers developed novel soil cores that were engineered with openings covered by nylon mesh with tiny pores just big enough to allow AM mycelia to grow into them but too small for any insects or other micro-fauna (including Collembola, soil mites) to get into the cores. The cores were then filled with soil which was frozen -80oC to kill any other insects/microfauna and inserted into experimental grassland to enable colonization by AM fungi from the surrounding plants. Twenty mites from the order Collembola, which would view the AM mycelia as food stuff, were introduced to half of the cores. After another four weeks the grassland was exposed to a particular form of carbon dioxide (a stable isotope of carbon, 13C) for 7 hours, a technique called pulse labelling. Concentration of 13C in cores was then analysed. The soil cores which were exposed to the mites were found to have 32% less 13C than the control cores. This showed that Collembola's consumption of the arbulscar mycorrhizal mycelia had disrupted a key pathway transporting carbon from plants to soil.

As a final check the researchers examined both the cores with and without Collembola for a particular phospholipid fatty acid (PLFA) that is characteristic for AM mycelia. They found that this particular PLFA contained significant amounts of 13C in cores not exposed to Collembola. However those soil cores that were exposed to collembola which fed on the mycorrhizal mycelia did not have 13C enriched PFLAs..

This research establishes that arbuscular mycorrhizal mycelia provide a major highway in terms of transporting carbon from plants to soil. This new understanding of how both mycorrhizal mycelia and the insect population of soil impact on the transport of carbon will assist researchers trying to understand what preserves a healthy soil and provides recycled carbon for supporting below ground biodiversity. It will also open up a new understanding of the food-webs and nutrient flow in soil which is fundamental to sustainable agriculture.


'"/>

Source:The University of Warwick


Related biology news :

1. Penguin chicks exposed to human visitors experience spike in stress hormone
2. Embryos exposed in 3-D
3. Hair samples show babies can be exposed to crystal meth while in the womb
4. Lead-scrubbing drug may also improve muscle function in lead-exposed children
5. Deep sea algae connect ancient climate, carbon dioxide and vegetation
6. Microbe has huge role in ocean life, carbon cycle
7. Marine bacterium suspected to play role in global carbon and nitrogen cycles
8. High carbon dioxide levels spur Southern pines to grow more needles
9. Field tested: Grasslands wont help buffer climate change as carbon dioxide levels rise
10. Modifications render carbon nanotubes nontoxic
11. Climate change will affect carbon sequestration in oceans, model shows
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/10/2016)... India , March 10, 2016 ... a new market research report "Identity and Access Management ... & Audit, Compliance, and Governance), by Organization Size, by ... to 2020", published by MarketsandMarkets, The market is estimated ... USD 12.78 Billion by 2020, at a Compound Annual ...
(Date:3/9/2016)... YORK , March 9, 2016 This ... and future states of the RNA Sequencing (RNA Seq) ... segments such as instruments, tools and reagents, data analysis, ... Analyze various segments of the RNA-Sequencing market such as ... services Identify the main factors affecting each segment and ...
(Date:3/9/2016)... 9, 2016  Crossmatch ® , a leading ... today announced the addition of smart features to ... multi-factor authentication platform. New contextual and application-specific authentication ... security where it,s needed most — while minimizing ... . --> Washington, DC ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... ... April 29, 2016 , ... During a two day program ... viable company, CereScan’s CEO, John Kelley, joined other Denver business leaders in providing ... in the Denver area business community, shared his top fundamental learnings in building ...
(Date:4/29/2016)... ... April 29, 2016 , ... Intelligent Implant Systems announced today that ... 510(k) for sale in the United States. These components expand the capabilities of ... With one-level sales beginning in October of 2015, the company has seen significant sales ...
(Date:4/28/2016)... 2016 The report "Cryocooler Market ... Service (Technical Support, Product Repairs & Refurbishment, Preventive Maintenance, ... to 2022", published by MarketsandMarkets, the global market is ... at a CAGR of 7.29% between 2016 and 2022. ... 94 Figures spread through 159 Pages and in-depth TOC ...
(Date:4/28/2016)... Conn. (PRWEB) , ... April 28, 2016 , ... ... financing and ongoing support for Connecticut's innovative, growing companies, today announced the launch ... health and financial technology (fintech) companies. , “VentureClash looks to attract ...
Breaking Biology Technology: