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:11/9/2015)... ) ... "Global Law Enforcement Biometrics Market 2015-2019" ... ) has announced the addition of ... 2015-2019" report to their offering. ... ) has announced the addition of the ...
(Date:11/4/2015)... November 4, 2015 --> ... report published by Transparency Market Research "Home Security Solutions Market ... Forecast 2015 - 2022", the global home security solutions market is ... by 2022. The market is estimated to expand at ... 2015 to 2022. Rising security needs among customers at ...
(Date:10/29/2015)... Oct. 29, 2015   MedNet Solutions , an ... spectrum of clinical research, is pleased to announce that ... Association (MHTA) as one of only three finalists for ... – Small and Growing" category. The Tekne Awards honor ... shown superior technology innovation and leadership. ...
Breaking Biology News(10 mins):
(Date:11/24/2015)... ... November 24, 2015 , ... In harsh ... Insertion points for in-line sensors can represent a weak spot where leaking process ... series of retractable sensor housings , which are designed to tolerate extreme process ...
(Date:11/24/2015)... , Nov. 24, 2015 HemoShear Therapeutics, ... discovering drugs for metabolic disorders, announced today the ... its Board of Directors (BOD). Mr. Watkins is ... Human Genome Sciences (HGS), and also served as ... Jim Powers , Chairman and CEO of ...
(Date:11/23/2015)... CHICAGO , Nov. 24, 2015 Women with ... screening CT exams face a higher risk of lung cancer ... being presented next week at the annual meeting of the ... --> --> Lung ... are classified as solid or subsolid based on their appearance ...
(Date:11/23/2015)... The royalty-free a greement ... develop daclatasvir for 112 low- and m ... --> --> The Medicines Patent Pool (MPP) ... signing an agreement with Bristol-Myers Squibb for daclatasvir, a novel ... of the HCV virus.  The royalty-free licence will enable generic ...
Breaking Biology Technology: