A low-gluten strain of wheat that could benefit people with coeliac disease has been created by a team of scientists in Spain.

They hope their work can be applied to producing products like bread that are low in gluten, a group of proteins normally found in wheat.

Coeliac disease results from the immune system reacting to presence of gluten by damaging the small intestine lining. This can result in symptoms such as bloating, diarrhoea and other more severe symptoms such as anaemia.

As a result, those that suffer from it, are unable to eat anything containing wheat.

The condition affects around 1 per cent of the population.

Primarily, a protein called α-gliadin is the component of gluten that causes an adverse immune reaction.

With this in mind, the research team at the Institute for Sustainable Agriculture in the Spanish city of Cordoba edited the α-gliadin genes in wheat using the CRISPR/Cas9 tool, effectively reducing the amount of α-gliadin in their wheat.

In one of their wheat strains, the scientists knocked out 35 of the 45 genes that code for α-gliadin in wild wheat.

Using this method, the scientists reduced the immune reactivity of the wheat by 85 per cent.

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“We show that CRISPR/Cas9 technology can be used to precisely and efficiently reduce the amount of α-gliadins in the seed kernel, providing bread and durum wheat lines with reduced immunoreactivity for gluten intolerant consumers,” the scientists wrote when they published their findings in the Plant Biotechnology journal.

“This is certainly a technique that’s of big interest to people,” said Sarah Sleet, chief executive of Coeliac UK. “The bottom line is I’m sure people with coeliac disease would love to see a product that behaves like wheat without having the problem gluten in it.”

However, she pointed out that the exact protein component that proves toxic for an individual with coeliac disease varies between individuals, and depends on their genetic predisposition to the disease.