Navigation Links
Ancient genes used to produce salt-tolerant wheat

Two recently discovered genes from an ancient wheat variety have led to a major advance in breeding new salt-tolerant varieties.

In a recent set of papers published in the journal Plant Physiology researchers describe the two genes -- known as Nax1 and Nax2. The genes work by excluding salt from different parts of the plant: one from the roots, the other from the leaves. The discovery of the two genes is the subject of international patents.

"The two genes originally came from a wheat ancestor, Triticum monococcum," says research team leader, CSIRO Plant Industry's Dr Rana Munns. "They were unwittingly crossed into a durum wheat line about 35 years ago and are normally not present in any modern wheat."

The project began when the CSIRO team used a highly accurate selection method -- based on their understanding of how plants tolerate salt -- to identify wheat varieties that could cope with higher salinity. They were particularly interested in the premium-priced durum wheat, which is much more salt-sensitive than bread wheat.

"We screened a hundred durum wheats from the Australian Winter Cereals Collection at Tamworth, which contains tens of thousands of wheat types," Dr Munns says. "Highlighting the fact that the science of plant breeding sometimes relies on an element of good fortune, we were lucky to find the durum variety with the ancient genes straight away, otherwise we might have been looking for years."

The team used their knowledge of the two genes to construct molecular markers, which are now in use in CSIRO's wheat breeding program. A durum wheat variety as salt-tolerant as bread wheat is in advanced field trials and could be commercially available in three years. Even better durum wheats are in development and the program has been expanded to include bread wheat.

"Bread wheat is quite tolerant to salt, but we think it too can be improved. Our aim is to eventually produce wheats able, like barley, to grow in highly saline soils," Dr Munns says.

Over six per cent of the world's arable land is affected by salinity. Salt tolerant crops can provide farmers with income for remediation, as well as helping to stabilise soil from wind and water erosion.

Source:CSIRO Australia

Related biology news :

1. Ancient olfaction protein is shared by many bugs, offering new pest control target
2. Ancient immune defense mechanism is no match for HIV-1
3. Ancient DNA helps clarify the origins of two extinct New World horse species
4. Researchers Discover Ancient Origins Of Tuberculosis-causing Bacteria
5. Ancient DNA confirms single origin of Malagasy primates
6. Ancient anthropoid origins discovered in Africa
7. Ancient trans-Atlantic swarm brought locusts to the New World
8. Ancient humans brought bottle gourds to the Americas from Asia
9. Ancient DNA helps UF researchers unearth potential hemophilia therapy
10. Ancient DNA provides clues to the evolution of social behavior
11. Ancient ants arose 140-168 million years ago

Post Your Comments:

(Date:10/12/2015)... 2015 NXTD ) ("NXT-ID" or the ... commerce market, reports on the recent SNS Future in Review ... --> NXTD ) ("NXT-ID" or the "Company"), a biometric ... on the recent SNS Future in Review Conference in ... Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), a ...
(Date:10/8/2015)... LAKE CITY , 8. Oktober 2015 ... TRCK), ein global tätiges Unternehmen des Bereiches ... einem Vertrag mit der Gefängnisbehörde Virginias (Department ... dessen Rahmen elektronische Überwachungsdienste für alle Strafen ... Derek Cassell , Präsident für den ...
(Date:10/6/2015)... 6, 2015 Track Group, Inc. (OTCQX: TRCK), ... has signed a contract with the Virginia Department of ... range of sentences under the Department,s oversight. ... "This contract with the Virginia DOC will expand our ... advances our position as a trusted leader in offender ...
Breaking Biology News(10 mins):
(Date:10/12/2015)... /PRNewswire/ - Aeterna Zentaris Inc. (NASDAQ:  AEZS) (TSX: AEZ) ... and commercializing novel treatments in oncology, endocrinology and women,s ... , the Company,s former Senior Vice President, Chief Financial ... Quebec City office.  David ... of the Company commented, "After a comprehensive review, the ...
(Date:10/12/2015)... , Belgium , Oct. 12, 2015 /PRNewswire/ ... that full results from a completed clinical study of its ... have been published in the online issue of Clinical ... The peer-reviewed study was conducted in collaboration with ... led by Roland Andersson , MD, PhD, Professor of ...
(Date:10/11/2015)... ... October 11, 2015 , ... Intelligent Implant Systems, LLC is ... multiple surgeries have been completed with this new posterior thoracolumbar spinal fusion system. ... Center of the Carolinas. The Revolution™ Spinal System pioneers a new approach ...
(Date:10/9/2015)... 9, 2015 Governor Tom Wolf ... company focused on developing T-cell receptor cancer immunotherapy treatments, ... a new expansion project. Pennsylvania ... commonwealth as 110 new, high-paying jobs will be created ... "My budget proposal includes sustained funding for the life ...
Breaking Biology Technology: