The research is producing new experimental methods, data acquisition, and theoretical understanding. Recently, scientists from the U.S. Salinity Laboratory, USDA-Agricultural Research Service, assembled a collection of new research in the form of 13 papers that are published as a special section of the August issue of Vadose Zone Journal.
Like most things that exist underground, plant roots are out-of-sight and easily forgotten, but while flowers, leaves, and other aboveground plant parts are more familiar, plant roots are equally deserving of our appreciation. Beneath every towering tree, tasty crop, and dazzling ornamental lies a root system that makes it all possible. Roots provide anchor and support for plants, extract water and nutrients from soil, and reduce soil erosion. Roots also play an important role in soil carbon cycling and the global carbon balance.
A number of current issues related to water availability and climate change are giving impetus to new research aimed at roots and their functioning. The research is producing new experimental methods, data acquisition, and theoretical understanding. Recently, scientists from the U.S. Salinity Laboratory, USDA-Agricultural Research Service, assembled a collection of new research in the form of 13 papers that are published as a special section of the August issue of Vadose Zone Journal. Some of the research in these papers was presented at the 2006 Soil Science Society of America Annual Meeting (Indianapolis, IN) and the 2007 European Geosciences Union General Assembly (Vienna, Austria).
Several of the collected papers take aim at the "out-of-sight" problem, using advanced imaging technologies to observe roots and their functioning at the scale of a single plant or root. Imaging technologies such as Magnetic Resonance Imaging (MRI) are more commonly used in medical and industrial applications, and their use in root research requires new measurement procedures and protocols. In the collected works, researchers were able to successfully obtain images of growing root systems and were able to observe water uptake patterns.
Another current research topic concerns the role of roots in carbon cycling and the implications for global climate change. New research reported in the special section demonstrates that root and carbon dynamics are highly complex, requiring nearly continuous monitoring to understand the biophysical factors that regulate belowground carbon dynamics.
A few of the collected papers are concerned with the development of mathematical models that simulate various root processes, including the uptake of water. These types of models form the basis for various computer simulation tools that are currently used in agricultural and environmental management. For example, one paper in the collection uses such a model to investigate the role of root uptake in regulating the movement of plutonium in soils at the Savannah River nuclear materials processing site.
Roots can also be studied at the level of plant species or biomes. Included in the new collection is research reporting on differences in root zone hydrologic behavior for various species in chaparral ecosystems. The observed differences are minor, but there are detectible differences in how different vegetation affects the water budget. Other research looks at factors affecting rooting depth for different soils, climates, and vegetation. The authors conclude that many ecological factors favor shallow roots over deep roots, and hypothesize that root distributions for particular plant communities tend to be only as deep as necessary to meet specific water requirements.
Todd Skaggs and Peter Shouse, both of the U.S. Salinity Laboratory, Riverside, CA, served as guest editors of the special section, Roots and Root Function, and introduce the papers in a preface to the special section.
The full article is available for no charge for 30 days following the date of this summary. View the abstract at http://vzj.scijournals.org/cgi/content/full/7/3/1008.
Vadose Zone Journal, http://www.vadosezonejournal.org/ is a unique publication outlet for interdisciplinary research and assessment of the biosphere, with a focus on the vadose zone, the mostly unsaturated zone between the soil surface and the permanent groundwater table. VZJ is a peer-reviewed, international, online journal publishing reviews, original research, and special sections across a wide range of disciplines that involve the vadose zone, including those that address broad scientific and societal issues. VZJ is published by Soil Science Society of America, with Geological Society of America as a cooperator.
The Soil Science Society of America (SSSA) is a progressive, international scientific society that fosters the transfer of knowledge and practices to sustain global soils. Based in Madison, WI, and founded in 1936, SSSA is the professional home for 6,000+ members dedicated to advancing the field of soil science. It provides information about soils in relation to crop production, environmental quality, ecosystem sustainability, bioremediation, waste management, recycling, and wise land use.
SSSA supports its members by providing quality research-based publications, educational programs, certifications, and science policy initiatives via a Washington, DC, office. For more information, visit http://www.soils.org.
SSSA is the founding sponsor of an approximately 5,000-square foot exhibition, Dig It! The Secrets of Soil, opening July 19, 2008 at the Smithsonian's National Museum of Natural History in Washington, DC.
Sara Uttech | Newswise Science News
Despite government claims, orangutan populations have not increased. Call for better monitoring
06.11.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
Increasing frequency of ocean storms could alter kelp forest ecosystems
30.10.2018 | University of Virginia
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
Physicists at ETH Zurich demonstrate how errors that occur during the manipulation of quantum system can be monitored and corrected on the fly
The field of quantum computation has seen tremendous progress in recent years. Bit by bit, quantum devices start to challenge conventional computers, at least...
Scientists developed specially coated nanometer-sized vehicles that can be actively moved through dense tissue like the vitreous of the eye. So far, the transport of nano-vehicles has only been demonstrated in model systems or biological fluids, but not in real tissue. The work was published in the journal Science Advances and constitutes one step further towards nanorobots becoming minimally-invasive tools for precisely delivering medicine to where it is needed.
Researchers of the “Micro, Nano and Molecular Systems” Lab at the Max Planck Institute for Intelligent Systems in Stuttgart, together with an international...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
12.11.2018 | Life Sciences
12.11.2018 | Materials Sciences
12.11.2018 | Physics and Astronomy