Scientists discover plant 'nourishing gene'

"Scientists discover plant 'nourishing gene': good news for global food production


A team of EU-funded British and French researchers has identified the 'nourishing gene' in charge of transferring nutrients from plants to seeds. This new discovery, presented in the journal Current Biology, could help increase global food production while it also has implications for food security. 


For the first time the researchers were able to identify the gene, named Meg1, which regulates the optimum amount of nutrients flowing from mother to offspring in maize plants. -----------


Meg1, unlike the majority of genes that are expressed from both maternal and paternal chromosomes, is expressed only from the maternal chromosomes. This unusual form of uniparental gene expression, called imprinting, is not restricted to plants; it also occurs in some human genes known to regulate the development of the placenta to control the supply of maternal nutrients during foetal growth. 


Although scientists have known for a while of the existence of such imprinted genes in humans and other mammals, this is the first time a parallel gene to regulate nutrient provisioning during seed development has been identified in the plant world. 


The results from this new study mean that scientists can now focus on using the gene and understanding the mechanism by which it is expressed to increase seed size and productivity in major crop plants. 


One of the study authors, Dr Jose Gutierrez-Marcos from the University of Warwick, said: 'These findings have significant implications for global agriculture and food security, as scientists now have the molecular know-how to manipulate this gene by traditional plant breeding or through other methods to improve seed traits, such as increased seed biomass yield. This understanding of how maize seeds and other cereal grains develop - for example in rice and wheat - is vital as the global population relies on these staple products for sustenance. To meet the demands of the world's growing population in years to come, scientists and breeders must work together to safeguard and increase agricultural production.' -------------


For more information, please visit: 
University of Warwick:  http://www2.warwick.ac.uk/ "


http://cordis.europa.eu/fetch?CALLER=EN_NEWS&ACTION=D&SESSION=&RCN=34232


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