South Perth, Western Australia
November 22, 2011
Western Australian scientists have cracked the lupin genetic code, providing the world’s most comprehensive and informative genetic map which will help fast track the development of new varieties.
The highly detailed genetic lupin map developed by the Department of Agriculture and Food’s national lupin breeding team, shows how certain genes can be inherited to help breeders locate and select commercially important genes for future lupin varieties.
It is significantly more detailed than any wheat or barley genetic map available globally and will ensure the Australian lupin industry remains internationally competitive.
Department of Agriculture and Food researchers Chengdao Li, Bevan Buirchell and Hua’an Yang study part of the newly mapped lupin genetic code
Department Grains Industry Executive Director Peter Metcalfe said the new map would fast track the development of lupin varieties with disease resistance, better yields and greater tolerance to drought stress by opening the door for improved selection of key genes in lupin breeding.
“There have been many advances in DNA analytical techniques and knowledge of key lupin genes since the department pioneered lupin genetic mapping during the past decade,” Mr Metcalfe said.
The new genetic map uses DNA sequence analysis to show the position of known genes and genetic markers relative to each other with far greater detail than previously possible.
“About 9000 locations on the lupin genome have been tagged, increasing the marker density by up to 20 times,” Mr Metcalfe said.
“A high density map, such as this one, enhances the reliability, precision and ability to select genes directly based on the plant’s DNA.
“We have already identified a gene which shows more resistance to anthracnose from the Tanjil lupin. This means future lupin varieties could consistently meet the same resistance levels and become an industry benchmark.
“The research breakthrough highlights the value of progress in supporting sciences to create opportunities for Australia’s agricultural industries.”
Murdoch University played a key role in the map through developing rapid technologies for applied breeding.
The department’s Genetic and Product Innovation Director Robert Loughman said the breakthrough opened up tremendous possibilities for identifying and combining key genes not previously possible in lupin breeding.
“With very detailed information on each of the 9000 tagged locations, this is a major achievement and will assist significantly in advancing the lupin industry,” Dr Loughman said.
“To maximise the opportunity there is a need to significantly increase research to link these markers with more traits in lupin germplasm so commercial value to growers will continue to increase.
“This involves growing and testing key lupin breeding populations for their response to yield, disease resistance, environmental adaptation and marketable features.
“Testing is critical to identify genes and quantify their commercial value, giving breeders the confidence to select them with molecular markers.”
The Grains Research and Development Corporation is a funding partner in the National Lupin Breeding Program, through Pulse Breeding Australia.
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