Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


Breakthrough in hybrid species science

Friday, March 7, 2014
Breakthrough in hybrid species science

Massey University scientists have discovered a universal law that explains how hybrid species survive and thrive.

Computational biologist Professor Murray Cox and molecular biologist Dr Austen Ganley led the research that analysed what happens when a new species is formed. Their findings were published today in the Public Library of Science online journal, Genetics.

“When two very different species suddenly merge together, a new species is created instantaneously that contains two different sets of machinery, or RNA (Ribonucleic acid) as it’s known,” Professor Cox says. “Some parts of this machinery won’t work together, so we asked the question, how does this hybrid survive?”

Professor Cox says hybrids are surprisingly common and can be seen in the cotton used to make bed-sheets, the wheat in bread and in New Zealand alpine plants.

His team used advanced computational biology methods to sequence and analyse hundreds of millions of RNA copies of a fungus found in grass. “This particularly fungus [epichloe endophyte] is one of the good guys," he says. "The plant gives the fungus a place to live, and the fungus produces chemicals that kill insects that try to eat the grass. This hidden relationship is a key reason for the success of New Zealand’s multibillion dollar dairy industry.”

Professor Cox was amazed to find that the RNA levels in the grass fungus were almost identical to the patterns found in cotton – the only other hybrid species that has undergone similar analysis.

“These species are radically different, for starters, one is a plant, the other is a fungus,” he says. “Therefore we realised we had identified universal rules that dictate how gene expression has to behave in order for hybrid species to control their two sets of machinery [RNA], regardless of what exact species those hybrids are."

These genetic rules revealed that the hybrid’s genes mimic one parent or the other. “The RNA levels showed one copy effectively gets turned off. It’s not simply an average of what its parents have. This pattern occurs in both fungi and plants — in other words, there are universal rules that control gene expression levels in hybrids across the tree of life.”

It is this final point that has generated the greatest interest in the scientific community and earned Professor Cox’s research a place in the PLOS Genetics publication.

ENDS

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

Economic Update: RBNZ Says Rate Cut Seems Likely

The Reserve Bank will likely cut interest rates further as a persistently strong kiwi dollar makes it difficult for the bank to meet its inflation target, it said. The local currency fell. More>>

ALSO:

House Price Action Plan: RBNZ Signals National Lending Restrictions

The central bank wants to cap bank lending to property investors with a deposit of less than 40 percent at 5 percent and restore the 10 percent limit for owner-occupiers wanting to take out a mortgage with a deposit of less than 20 percent, according to a consultation paper released today. More>>

ALSO:

Sparks Fly: Gordon Campbell On China Steel Dumping Allegations

No doubt, officials on the China desk at MFAT have prided themselves on fashioning a niche position for New Zealand right in between the US and China – and leveraging off both of them! Well, as the Aussies would say, of MFAT: tell ‘em they’re dreaming. More>>

ALSO:

Loan Sharks: Finance Companies Found Guilty Of Breaching Fair Trading Act

Finance companies Budget Loans and Evolution Finance, run by former 1980s corporate high-flyer Allan Hawkins, have been found guilty of 106 charges of breaching the Fair Trading Act for misleading 21 borrowers while enforcing loan contracts. More>>

ALSO:

Post Panama Papers: Govt To Adopt Shewan's Foreign Trust Recommendations

The government will adopt all of the recommendations from former PwC chairman John Shewan to increase disclosure and introduce a register for foreign trusts with new legislation to be introduced next month. More>>

ALSO:

The Price Of Cheese: Cheddar At Eight-Year Low

Food prices decreased 0.5 percent in the year to June 2016, influenced by lower grocery food prices (down 2.3 percent), Statistics New Zealand said today. Compared with June 2015, cheese prices were down 9.5 percent, fresh milk was down 3.9 percent, and yoghurt was down 9.2 percent. More>>

ALSO:

Financial Advisers: New 'Customer-First' Obligations

Goldsmith plans to do away with the current adviser designations which he says have been "unsatisfactory" in that some advisers are obliged to disclose potential conflicts of interest and act in their customers' best interests, but others are not. More>>

ALSO:

Get More From Scoop

 
 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news