Subscribe free to our newsletters via your
  Energy News  




Subscribe free to our newsletters via your




















FARM NEWS
New rice fights off drought
by Staff Writers
Tokyo, Japan (SPX) Apr 10, 2017


Ubi: AtGolS2 improved Curinga grain yield in the target environment. Field performance of unmodified Curinga rice (left) and promising transgenic strain 2580 (right). Photographs were taken during stress at the grain filling stage. Image courtesy RIKEN and CIAT.

Scientists at the RIKEN Center for Sustainable Resource Science (CSRS) have developed strains of rice that are resistant to drought in real-world situations. Published in Plant Biotechnology Journal, the study reports that transgenic rice modified with a gene from the Arabidopsis plant yield more rice than unmodified rice when subjected to stress brought by natural drought. The study was carried out in collaboration with researchers from the International Center for Tropical Agriculture (CIAT) in Colombia and the Japanese International Research Center for Agricultural Sciences (JIRCAS) in Japan.

As the amount of rice needed to help feed the global population increases, the consequences of drought-related crop reduction are becoming more severe. RIKEN scientists and their collaborators tackled this issue by developing transgenic strains of rice that are more resistant to drought.

Normally, plants adapt to drought-related stress by producing osmoprotectants - molecules like soluble sugars that help prevent water from leaving cells. Galactinol synthase (GolS) is an enzyme needed to produce one these important sugars called galactinol. In previous work, RIKEN scientists showed that Arabidopsis plants express the AtGolS2 gene in response to drought and salinity stress.

"The Arabidopsis GolS2 gene was first identified with basic research at RIKEN," explains RIKEN scientist Fuminori Takahashi. "Using it, we were able to improve resistance to drought-related stress, and increased the grain yield of rice in dry field conditions. This is one of the best model cases in which basic research knowledge has been successfully applied toward researching a resolution to a food-related problem."

For this study, they created several lines of transgenic Brazilian and African rice that overexpress this gene, and with their CIAT and JIRCAS collaborators, tested how well the rice grew in different conditions in different years.

The results were very promising. First, they grew the different rice lines in greenhouse conditions and showed that the modified Brazilian and African rice did indeed show higher levels of galactinol than the unmodified control rice. Next, they tested tolerance to drought during the seedling growth period because this period often overlaps with seasonal drought.

In order to precisely control this part of the experiment, it was conducted in a rainout shelter that allowed them to artificially create drought-like conditions. After three weeks, the modified strains had grown taller and showed less leaf-rolling, a common response to drought stress.

Drought tolerance was next confirmed at the reproductive stage in three rainout field trials in Colombia. These trials were during different seasons and different locations. Nevertheless, transgenic lines in both species of rice showed higher yield, greater biomass, lower leaf-rolling, and greater fertility than the unmodified rice. Closer examination showed that five of the most promising strains had greater relative water content during drought conditions, and also used more light for photosynthesis, and contained more chlorophyll.

Finally, they tested the transgenic rice over a three-year period in different natural environments. Again, several of the transgenic strains showed higher grain yield under mild and severe natural drought.

When might we see this useful rice on the market? According to Takahashi, the greatest barrier to commercial availability is that they used genetically modified (GM) technology to generate the GolS2 transgenic rice. "Now, we have begun our next collaborative project, in which we will generate useful rice without GM technology. It might take 5-10 years to reach our goal, but we must keep pressing forward because droughts and climate change might get worse in the future."

Selvaraj M, Ishizaki T, Valencia MO, Ogawa S, Dedicova B, Ogata T, Yoshikawa K, Maruyama K, Kusano M, Saito K, Takahashi F, Shinozaki K, Nakashima K, Ishitani M. Overexpression of an Arabidopsis thaliana galactinol synthase gene improves drought tolerance in transgenic rice and increased grain yield in the field. Plant Biotechnology Journal. doi: 10.1111/pbi.12731.

FARM NEWS
New museum reveals power of poo in Italy
Castelbosco, Italy (AFP) April 7, 2017
It may pong, but Italy's "Shit Museum" has the whiff of success about it: here in Castelbosco, farmers are transforming sloppy cowpats into plates you can eat off. Once upon a time there was a large farm about a hundred kilometres (62 miles) south of Milan. The farmer had not only hundreds of cows, but veritable mountains of excrement - stinking slops he thought he could do something with. ... read more

Related Links
RIKEN
Farming Today - Suppliers and Technology

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

FARM NEWS
Scientists link California droughts and floods to distinctive atmospheric waves

As CO2 levels increase, airplane rides get bumpier

Monitoring pollen using an aircraft

How Britain became an island

FARM NEWS
China's BeiDou system to expand cooperation to SE Asia

ISRO Beams in Private Firm to Make Two Satellites for Navigation

Satnavs 'switch off' parts of the brain

Technology can reduce GPS outages from Northern Lights, researchers say

FARM NEWS
Stanford study explores risk of deforestation as agriculture expands in Africa

A new parameterization of canopy radiative transfer for land surface radiation models

First world survey finds 9,600 tree species risk extinction

Emissions from the edge of the forest

FARM NEWS
Scientists engineer sugarcane to produce biodiesel, more sugar for ethanol

Gripen fighter completes test flights using 100 percent biofuel

Ridding the oceans of plastics by turning the waste into valuable fuel

Shell unveils giant new high-tech research lab in India

FARM NEWS
Electronic control to ensure photovoltaic systems always work at maximum power

Report shines light on installed costs and deployment barriers for residential solar PV

Concept, SolarTech team up next-gen solar panels

IEA: India needs diverse investments in renewables

FARM NEWS
Canada sees emerging role for wind energy

U.N. says low-carbon economy not a "pipe dream"

Mega-wind farm offshore Denmark clears hurdle

Japan scientist eyes energy burst from 'typhoon turbine'

FARM NEWS
US environmental groups file suit to block new coal mining on public lands

Adani to begin work on Australia mine by August: report

Czech energy group bucks green trend with bet on coal

World Bank indirectly backs harmful SE Asian projects: report

FARM NEWS
Hong Kong protester jailed over anti-China clashes

Billionaire Warren Buffet becomes face of Coke in China

US authorities bust visa fraud scheme for wealthy Chinese

Warhol Mao portrait fetches $12.7m in Hong Kong auction




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement