Pollen DNA is being studied by British scientists in a bid to identify which grasses cause severe hay fever
- It is impossible to tell pollen from different plants apart without looking at DNA
- Scientists are hoping to use pollen DNA to find which pollen causes hay fever
- Analysing 40 species of grass, including cocksfoot, Timothy and meadow foxtail
DNA of pollen produced by common varieties of grass is being studied by scientists hoping to alleviate hay fever symptoms.
Around one in five Britons suffer with hay fever, plagued by constant sneezing, sniffling and watering eyes throughout the summer months.
Now, a team of scientists at Bangor University are sampling 40 common species of grass — including cocksfoot, Timothy and meadow foxtail — to find which specific types cause the reaction.
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Around one in five Britons suffers with hay fever, plagued by constant sneezing, sniffing and watering eyes throughout the summer months. Scientists are studying pollen DNA to find which strains cause the seasonal affliction (stock)
The team believes only a few varieties of grass trigger hay fever, which may explain why people suffer severe symptoms on days when the pollen count is low.
However, on these days, although overall pollen levels are low, the relative amount of specific pollens may be high.
Professor Simon Creer, a hay fever sufferer who is leading the research, hopes their work will lead to more precise grass-by-grass pollen counts.
‘It could even extend to making recommendations to turf manufacturers and grass seed producers as to which species of grass are not as strongly associated with hay fever symptoms,’ he said.
‘That could mean that developers could avoid them when building new schools, hospitals or housing estates.
‘We know that hay fever costs hundreds of millions of pounds in days off work and depression and it’s not helpful to students doing exams in June either.’
A team of scientists at Bangor University are sampling 40 common species of grass, including cocksfoot, Timothy and meadow foxtail to see which types of pollen cause the most severe symptoms (stock)
Hay fever is a complex affliction, with some people affected by certain pollens and not others.
Some people are immune to grass pollen, but get itchy eyes and start sneezing due to tree pollen, something Professor Creer says is common in Scandinavia.
The Wales-based researchers partnered with the Met Office and deployed pollen collection traps across the UK in recent years.
This, they hope. will tell them what specific types of pollen are common in the air at specific times.
By comparing this to data from hay fever sufferers attending their GP surgery or even hospital, they can understand what pollen strains affect people the most.
Telling pollen from one plant apart from another is extremely difficult as they are identical to look at, even under a microscope. That is why genetic analysis to read the DNA, is required.
Professor Creer said: ‘We already see weather forecasts at this time of year stating whether pollen levels are low, medium or high but in future we will be able to complement that information by identifying the different kinds of pollen that are around.
‘If we can identify the species of grass that are contributing more to the allergenic load then that informs us that we can try and avoid those species whenever possible.
‘If we see a spike in a particular kind of pollen at the same time that hay fever is increasing you can work out where the hot spots are and which pollen is in that area.’