Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Scientists ID Genes that Could Lead to Tough, Disease-Resistant Varieties of Rice

02.04.2014

For a new generation of grains for a warmer world

As the Earth’s human population marches toward 9 billion, the need for hardy new varieties of grain crops has never been greater.


Wikimedia Commons photo by BluesyPete

A rice field in Sri Lanka. Michigan Tech scientists have discovered genes in rice that could help solve the world's hunger problem.

It won’t be enough to yield record harvests under perfect conditions. In an era of climate change, pollution and the global spread of pathogens, these new grains must also be able to handle stress. Now, researchers at Michigan Technological University have identified a set of genes that could be key to the development of the next generation of super rice.

A meta-data analysis by biologist Ramakrishna Wusirika and PhD student Rafi Shaik has uncovered more than 1,000 genes in rice that appear to play key roles in managing its response to two different kinds of stress: biotic, generally caused by infectious organisms like bacteria; and abiotic, caused by environmental agents, like nutrient deficiency, flood and salinity.

Traditionally, scientists have believed that different sets of genes regulated plants’ responses to biotic and abiotic stress. However, Wusirika and Shaik discovered that 1,377 of the approximately 3,800 genes involved in rice’s stress response played a role in both types stress. “These are the genes we think are involved in the cross talk between biotic and abiotic stesses,” said Wusirika.

About 70 percent of those “master” genes are co-expressive—they turn on under both kinds of stress. Typically, the others turn on for biotic stress and turn off for abiotic stress.

The scientists looked at the genes’ response to five abiotic stresses—drought, heavy metal contamination, salt, cold and nutrient deprivation—and five biotic stresses—bacteria, fungus, insect predation, weed competition and nematodes. A total of 196 genes showed a wide range of expressions to these stresses.

“The top genes are likely candidates for developing a rice variety with broad stress-range tolerance,” Wusirika said.

Next, they would like to test their findings. “We want to do experimental analysis to see if five or 10 of the genes work as predicted,” he said.

Their study is described in the paper, “Machine Learning Approaches Distinguish Multiple Stress Conditions using Stress-Resposive Genes and Identify Candidate Genes for Broad Resistance in Rice,” published in the January edition of Plant Physiology.

Marcia Goodrich | newswise
Further information:
http://www.mtu.edu

Further reports about: Physiology abiotic crops deficiency genes nematodes nutrient salinity

More articles from Agricultural and Forestry Science:

nachricht Climate change: Trade liberalization could buffer economic losses in agriculture
25.08.2016 | Potsdam-Institut für Klimafolgenforschung

nachricht Fungal intruder ante portas!
19.08.2016 | Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung

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: Streamlining accelerated computing for industry

PyFR code combines high accuracy with flexibility to resolve unsteady turbulence problems

Scientists and engineers striving to create the next machine-age marvel--whether it be a more aerodynamic rocket, a faster race car, or a higher-efficiency jet...

Im Focus: X-ray optics on a chip

Waveguides are widely used for filtering, confining, guiding, coupling or splitting beams of visible light. However, creating waveguides that could do the same for X-rays has posed tremendous challenges in fabrication, so they are still only in an early stage of development.

In the latest issue of Acta Crystallographica Section A: Foundations and Advances , Sarah Hoffmann-Urlaub and Tim Salditt report the fabrication and testing of...

Im Focus: Piggyback battery for microchips: TU Graz researchers develop new battery concept

Electrochemists at TU Graz have managed to use monocrystalline semiconductor silicon as an active storage electrode in lithium batteries. This enables an integrated power supply to be made for microchips with a rechargeable battery.

Small electrical gadgets, such as mobile phones, tablets or notebooks, are indispensable accompaniments of everyday life. Integrated circuits in the interiors...

Im Focus: UCI physicists confirm possible discovery of fifth force of nature

Light particle could be key to understanding dark matter in universe

Recent findings indicating the possible discovery of a previously unknown subatomic particle may be evidence of a fifth fundamental force of nature, according...

Im Focus: Wi-fi from lasers

White light from lasers demonstrates data speeds of up to 2 GB/s

A nanocrystalline material that rapidly makes white light out of blue light has been developed by KAUST researchers.

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

The energy transition is not possible without Geotechnics

25.08.2016 | Event News

New Ideas for the Shipping Industry

24.08.2016 | Event News

A week of excellence: 22 of the world’s best computer scientists and mathematicians in Heidelberg

12.08.2016 | Event News

 
Latest News

Symmetry crucial for building key biomaterial collagen in the lab

26.08.2016 | Health and Medicine

Volcanic eruption masked acceleration in sea level rise

26.08.2016 | Earth Sciences

Moth takes advantage of defensive compounds in Physalis fruits

26.08.2016 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>