Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:


X-ray analysis could boost legumes, thus reducing fertilizer pollution

The overuse of nitrogen fertilizers in agriculture can wreak havoc on waterways, health and the environment.
An international team of scientists aims to lessen the reliance on these fertilizers by helping beans and similar plants boost their nitrogen production, even in areas with traditionally poor soil quality.

Researchers from the Center of Plant Genomics and Biotechnology at the Technical University of Madrid (UPM) and the Advanced Photon Source (APS) at the U.S. Department of Energy’s Argonne National Laboratory report as an advance article April 5 for the Metallomics journal of The Royal Society of Chemistry on how to use X-ray analysis to map a path to increasing the amount of nitrogen that legumes deposit into the soil.

Cultivation of legumes, the plant family that includes peas, beans, alfalfa, soybeans, and peanuts, is one of the main ways farmers add natural nitrogen to agricultural fields. Rotating bean and corn crops to take advantage of the nitrogen beans deposit in the soil has long been a global farming tradition. Legumes use iron in the soil to carry out a complex chemical process called nitrogen fixation, which collects atmospheric nitrogen and converts it into organic forms that help the plant grow. When the plant dies, the excess nitrogen is released back into to the soil to help the next crop.

But often legumes are grown in areas with iron-depleted soil, which limits their nitrogen fixation. That’s where research can lend a hand. The Argonne-UPM team has created the world’s first model for how iron is transported in the plant’s root nodule to trigger nitrogen fixation. This is the first step in modifying the plants to maximize iron use.

“The long-term goal is to help sustainable agriculture practices and further diminish the environmental damage from overuse of nitrogen fertilizers,” said Manuel Gonzalez-Guerrero, lead author of the paper from UPM. “This can be done by maximizing the delivery of essential metal oligonutrients to nitrogen-fixing rhizobia.”

The research team, which included Lydia Finney and Stefan Vogt from the APS, used high-energy X-rays from the 8-BM and 2-ID-E beamlines of the APS to track the distribution of minute iron amounts in the different developmental regions of rhizobia-containing roots. This is the first high-energy X-ray analysis of plant-microbe interactions.

X-rays, such as those from the APS, provided a high sensitivity to elements and a high spatial resolution not attainable by other means. Full details can be found in the paper Iron distribution through the developmental stages of Medicago truncatula nodules.

In future studies at the APS, Gonzalez-Guerrero hopes to identify and characterize the key biological proteins responsible for iron transportation. That would give researchers targets to manipulate and screen for new legume varieties with increased nitrogen-fixation capabilities and higher nutritional value.

The Centre for Plant Biotechnology and Genomics (CBGP) is a joint Technical University of Madrid (UPM) and Instituto de Investigación y Tecnología Agraria y Alimentaria (INIA) research centre. It was created in 2005 with a double goal: to carry out the most advanced research aimed at understanding plant function, and to contribute to fulfil the needs of the economic agents within the agriculture, forestry and environment productive sectors that are potential users of this research. CBGP also has an educational role and is a reference centre for training of both scientists and technicians in the fields of plant biotechnology and genomics. Fully operative from 2008 with the opening of the new headquarters, more than 150 researchers and technicians organized into 24 research groups work there. It’s located in UPM Montegancedo Campus which recently won recognition of International Campus of Excellence.

The Advanced Photon Source at Argonne National Laboratory is one of five national synchrotron radiation light sources supported by the U.S. Department of Energy’s Office of Science to carry out applied and basic research to understand, predict, and ultimately control matter and energy at the electronic, atomic, and molecular levels, provide the foundations for new energy technologies, and support DOE missions in energy, environment, and national security. To learn more about the Office of Science X-ray user facilities, visit the user facilities directory.

Argonne National Laboratory seeks solutions to pressing national problems in science and technology. The nation's first national laboratory, Argonne conducts leading-edge basic and applied scientific research in virtually every scientific discipline. Argonne researchers work closely with researchers from hundreds of companies, universities, and federal, state and municipal agencies to help them solve their specific problems, advance America's scientific leadership and prepare the nation for a better future. With employees from more than 60 nations, Argonne is managed by UChicago Argonne, LLC for the U.S. Department of Energy's Office of Science.

Tona Kunz | EurekAlert!
Further information:

More articles from Agricultural and Forestry Science:

nachricht Earlier flowering of modern winter wheat cultivars
20.03.2018 | Georg-August-Universität Göttingen

nachricht Algorithm could streamline harvesting of hand-picked crops
13.03.2018 | University of Illinois College of Engineering

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Mars' oceans formed early, possibly aided by massive volcanic eruptions

Oceans formed before Tharsis and evolved together, shaping climate history of Mars

A new scenario seeking to explain how Mars' putative oceans came and went over the last 4 billion years implies that the oceans formed several hundred million...

Im Focus: Tiny implants for cells are functional in vivo

For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of live zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.

In the cells of higher organisms, organelles such as the nucleus or mitochondria perform a range of complex functions necessary for life. In the networks of...

Im Focus: Locomotion control with photopigments

Researchers from Göttingen University discover additional function of opsins

Animal photoreceptors capture light with photopigments. Researchers from the University of Göttingen have now discovered that these photopigments fulfill an...

Im Focus: Surveying the Arctic: Tracking down carbon particles

Researchers embark on aerial campaign over Northeast Greenland

On 15 March, the AWI research aeroplane Polar 5 will depart for Greenland. Concentrating on the furthest northeast region of the island, an international team...

Im Focus: Unique Insights into the Antarctic Ice Shelf System

Data collected on ocean-ice interactions in the little-researched regions of the far south

The world’s second-largest ice shelf was the destination for a Polarstern expedition that ended in Punta Arenas, Chile on 14th March 2018. Oceanographers from...

All Focus news of the innovation-report >>>



Industry & Economy
Event News

Virtual reality conference comes to Reutlingen

19.03.2018 | Event News

Ultrafast Wireless and Chip Design at the DATE Conference in Dresden

16.03.2018 | Event News

International Tinnitus Conference of the Tinnitus Research Initiative in Regensburg

13.03.2018 | Event News

Latest News

Physicists made crystal lattice from polaritons

20.03.2018 | Physics and Astronomy

Mars' oceans formed early, possibly aided by massive volcanic eruptions

20.03.2018 | Physics and Astronomy

Thawing permafrost produces more methane than expected

20.03.2018 | Earth Sciences

Science & Research
Overview of more VideoLinks >>>